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7 months agobcachefs: Fix remove_dirent()
Kent Overstreet [Mon, 1 Apr 2024 04:00:32 +0000 (00:00 -0400)]
bcachefs: Fix remove_dirent()

We were missing an iter_traverse().

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Logged op errors should be ignored
Kent Overstreet [Mon, 1 Apr 2024 02:34:45 +0000 (22:34 -0400)]
bcachefs: Logged op errors should be ignored

If something is wrong with a logged op, we just want to delete it -
there's nothing to repair.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Improve -o norecovery; opts.recovery_pass_limit
Kent Overstreet [Fri, 29 Mar 2024 01:34:14 +0000 (21:34 -0400)]
bcachefs: Improve -o norecovery; opts.recovery_pass_limit

This adds opts.recovery_pass_limit, and redoes -o norecovery to make use
of it; this fixes some issues with -o norecovery so it can be safely
used for data recovery.

Norecovery means "don't do journal replay"; it's an important data
recovery tool when we're getting stuck in journal replay.

When using it this way we need to make sure we don't free journal keys
after startup, so we continue to overlay them: thus it needs to imply
retain_recovery_info, as well as nochanges.

recovery_pass_limit is an explicit option for telling recovery to exit
after a specific recovery pass; this is a much cleaner way of
implementing -o norecovery, as well as being a useful debug feature in
its own right.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: bch2_run_explicit_recovery_pass_persistent()
Kent Overstreet [Sat, 30 Mar 2024 00:43:39 +0000 (20:43 -0400)]
bcachefs: bch2_run_explicit_recovery_pass_persistent()

Flag that we need to run a recovery pass and run it - persistenly, so if
we crash it'll still get run.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Ensure bch_sb_field_ext always exists
Kent Overstreet [Sat, 30 Mar 2024 22:57:53 +0000 (18:57 -0400)]
bcachefs: Ensure bch_sb_field_ext always exists

This makes bch_sb_field_ext more consistent with the rest of -o
nochanges - we don't want to be varying other codepaths based on -o
nochanges, since it's used for testing in dry run mode; also fixes some
potential null ptr derefs.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Flush journal immediately after replay if we did early repair
Kent Overstreet [Thu, 28 Mar 2024 06:36:10 +0000 (02:36 -0400)]
bcachefs: Flush journal immediately after replay if we did early repair

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Resume logged ops after fsck
Kent Overstreet [Sat, 23 Mar 2024 23:31:15 +0000 (19:31 -0400)]
bcachefs: Resume logged ops after fsck

Finishing logged ops requires the filesystem to be in a reasonably
consistent state - and other fsck passes don't require it to have
completed, so just run it last.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Add error messages to logged ops fns
Kent Overstreet [Sat, 23 Mar 2024 23:30:58 +0000 (19:30 -0400)]
bcachefs: Add error messages to logged ops fns

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Split out recovery_passes.c
Kent Overstreet [Sun, 24 Mar 2024 00:07:46 +0000 (20:07 -0400)]
bcachefs: Split out recovery_passes.c

We've grown a fair amount of code for managing recovery passes; tracking
which ones we're running, which ones need to be run, and flagging in the
superblock which ones need to be run on the next recovery.

So it's worth splitting out into its own file, this code is pretty
different from the code in recovery.c.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: fix backpointer for missing alloc key msg
Kent Overstreet [Thu, 28 Mar 2024 05:41:03 +0000 (01:41 -0400)]
bcachefs: fix backpointer for missing alloc key msg

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Fix bch2_btree_increase_depth()
Kent Overstreet [Thu, 14 Mar 2024 23:39:26 +0000 (19:39 -0400)]
bcachefs: Fix bch2_btree_increase_depth()

When we haven't yet allocated any btree nodes for a given btree, we
first need to call the regular split path to allocate one.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Kill bch2_bkey_ptr_data_type()
Kent Overstreet [Mon, 25 Mar 2024 23:26:05 +0000 (19:26 -0400)]
bcachefs: Kill bch2_bkey_ptr_data_type()

Remove some duplication, and inconsistency between check_fix_ptrs and
the main ptr marking paths

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Fix use after free in check_root_trans()
Kent Overstreet [Tue, 26 Mar 2024 22:46:38 +0000 (18:46 -0400)]
bcachefs: Fix use after free in check_root_trans()

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Fix repair path for missing indirect extents
Kent Overstreet [Tue, 26 Mar 2024 22:46:20 +0000 (18:46 -0400)]
bcachefs: Fix repair path for missing indirect extents

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Fix use after free in bch2_check_fix_ptrs()
Kent Overstreet [Tue, 26 Mar 2024 21:38:22 +0000 (17:38 -0400)]
bcachefs: Fix use after free in bch2_check_fix_ptrs()

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Fix btree node keys accounting in topology repair path
Kent Overstreet [Tue, 26 Mar 2024 20:39:54 +0000 (16:39 -0400)]
bcachefs: Fix btree node keys accounting in topology repair path

When dropping keys now outside a now because we're changing the node
min/max, we need to redo the node's accounting as well.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Check btree ptr min_key in .invalid
Kent Overstreet [Tue, 26 Mar 2024 01:58:07 +0000 (21:58 -0400)]
bcachefs: Check btree ptr min_key in .invalid

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: add REQ_SYNC and REQ_IDLE in write dio
zhuxiaohui [Tue, 26 Mar 2024 12:03:45 +0000 (20:03 +0800)]
bcachefs: add REQ_SYNC and REQ_IDLE in write dio

when writing file with direct_IO on bcachefs, then performance is
much lower than other fs due to write back throttle in block layer:

        wbt_wait+1
        __rq_qos_throttle+32
        blk_mq_submit_bio+394
        submit_bio_noacct_nocheck+649
        bch2_submit_wbio_replicas+538
        __bch2_write+2539
        bch2_direct_write+1663
        bch2_write_iter+318
        aio_write+355
        io_submit_one+1224
        __x64_sys_io_submit+169
        do_syscall_64+134
        entry_SYSCALL_64_after_hwframe+110

add set REQ_SYNC and REQ_IDLE in bio->bi_opf as standard dirct-io

Signed-off-by: zhuxiaohui <zhuxiaohui.400@bytedance.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Improved topology repair checks
Kent Overstreet [Sat, 23 Mar 2024 23:29:19 +0000 (19:29 -0400)]
bcachefs: Improved topology repair checks

Consolidate bch2_gc_check_topology() and btree_node_interior_verify(),
and replace them with an improved version,
bch2_btree_node_check_topology().

This checks that children of an interior node correctly span the full
range of the parent node with no overlaps.

Also, ensure that topology repairs at runtime are always a fatal error;
in particular, this adds a check in btree_iter_down() - if we don't find
a key while walking down the btree that's indicative of a topology error
and should be flagged as such, not a null ptr deref.

Some checks in btree_update_interior.c remaining BUG_ONS(), because we
already checked the node for topology errors when starting the update,
and the assertions indicate that we _just_ corrupted the btree node -
i.e. the problem can't be that existing on disk corruption, they
indicate an actual algorithmic bug.

In the future, we'll be annotating the fsck errors list with which
recovery pass corrects them; the open coded "run explicit recovery pass
or fatal error" in bch2_btree_node_check_topology() will in the future
be done for every fsck_err() call.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Be careful about btree node splits during journal replay
Kent Overstreet [Tue, 26 Mar 2024 21:14:43 +0000 (17:14 -0400)]
bcachefs: Be careful about btree node splits during journal replay

Don't pick a pivot that's going to be deleted.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: btree_and_journal_iter now respects trans->journal_replay_not_finished
Kent Overstreet [Mon, 25 Mar 2024 17:51:29 +0000 (13:51 -0400)]
bcachefs: btree_and_journal_iter now respects trans->journal_replay_not_finished

btree_and_journal_iter is now safe to use at runtime, not just during
recovery before journal keys have been freed.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: fix trans->mem realloc in __bch2_trans_kmalloc
Hongbo Li [Mon, 25 Mar 2024 02:50:48 +0000 (10:50 +0800)]
bcachefs: fix trans->mem realloc in __bch2_trans_kmalloc

The old code doesn't consider the mem alloced from mempool when call
krealloc on trans->mem. Also in bch2_trans_put, using mempool_free to
free trans->mem by condition "trans->mem_bytes == BTREE_TRANS_MEM_MAX"
is inaccurate when trans->mem was allocated by krealloc function.
Instead, we use used_mempool stuff to record the situation, and realloc
or free the trans->mem in elegant way.

Also, after krealloc failed in __bch2_trans_kmalloc, the old data
should be copied to the new buffer when alloc from mempool_alloc.

Fixes: 31403dca5bb1 ("bcachefs: optimize __bch2_trans_get(), kill DEBUG_TRANSACTIONS")
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Don't do extent merging before journal replay is finished
Kent Overstreet [Sat, 23 Mar 2024 23:29:55 +0000 (19:29 -0400)]
bcachefs: Don't do extent merging before journal replay is finished

We don't normally do extent updates this early in recovery, but some of
the repair paths have to and when we do, we don't want to do anything
that requires the snapshots table.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Add checks for invalid snapshot IDs
Kent Overstreet [Fri, 22 Mar 2024 20:29:23 +0000 (16:29 -0400)]
bcachefs: Add checks for invalid snapshot IDs

Previously, we assumed that keys were consistent with the snapshots
btree - but that's not correct as fsck may not have been run or may not
be complete.

This adds checks and error handling when using the in-memory snapshots
table (that mirrors the snapshots btree).

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Move snapshot table size to struct snapshot_table
Kent Overstreet [Fri, 22 Mar 2024 00:16:23 +0000 (20:16 -0400)]
bcachefs: Move snapshot table size to struct snapshot_table

We need to add bounds checking for snapshot table accesses - it turns
out there are cases where we do need to use the snapshots table before
fsck checks have completed (and indeed, fsck may not have been run).

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Add an assertion for trying to evict btree root
Kent Overstreet [Sun, 24 Mar 2024 23:52:03 +0000 (19:52 -0400)]
bcachefs: Add an assertion for trying to evict btree root

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: fix mount error path
Kent Overstreet [Thu, 28 Mar 2024 05:20:36 +0000 (01:20 -0400)]
bcachefs: fix mount error path

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: fix misplaced newline in __bch2_inode_unpacked_to_text()
Thomas Bertschinger [Thu, 21 Mar 2024 03:42:42 +0000 (21:42 -0600)]
bcachefs: fix misplaced newline in __bch2_inode_unpacked_to_text()

before:

u64s 18 type inode_v3 0:1879048192:U32_MAX len 0 ver 0:   mode=40700
  flags= (15300000)
  journal_seq=4
  bi_size=0
  bi_sectors=0

  bi_version=0bi_atime=227064388944
  ...

after:

u64s 18 type inode_v3 0:1879048192:U32_MAX len 0 ver 0:   mode=40700
  flags= (15300000)
  journal_seq=4
  bi_size=0
  bi_sectors=0
  bi_version=0
  bi_atime=227064388944
  ...

Signed-off-by: Thomas Bertschinger <tahbertschinger@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Fix journal pins in btree write buffer
Kent Overstreet [Fri, 22 Mar 2024 08:01:27 +0000 (04:01 -0400)]
bcachefs: Fix journal pins in btree write buffer

btree write buffer flush has two phases
 - in natural key order, which is more efficient but may fail
 - then in journal order

The journal order flush was assuming that keys were still correctly
ordered by journal sequence number - but due to coalescing by the
previous phase, we need an additional sort.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agobcachefs: Fix assert in bch2_backpointer_invalid()
Kent Overstreet [Fri, 22 Mar 2024 04:15:41 +0000 (00:15 -0400)]
bcachefs: Fix assert in bch2_backpointer_invalid()

Backpointers that point to invalid devices are caught by fsck, not
.key_invalid; so .key_invalid needs to check for them instead of hitting
asserts.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
7 months agoLinux 6.9-rc2
Linus Torvalds [Sun, 31 Mar 2024 21:32:39 +0000 (14:32 -0700)]
Linux 6.9-rc2

7 months agoMerge tag 'kbuild-fixes-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahi...
Linus Torvalds [Sun, 31 Mar 2024 18:23:51 +0000 (11:23 -0700)]
Merge tag 'kbuild-fixes-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Deduplicate Kconfig entries for CONFIG_CXL_PMU

 - Fix unselectable choice entry in MIPS Kconfig, and forbid this
   structure

 - Remove unused include/asm-generic/export.h

 - Fix a NULL pointer dereference bug in modpost

 - Enable -Woverride-init warning consistently with W=1

 - Drop KCSAN flags from *.mod.c files

* tag 'kbuild-fixes-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kconfig: Fix typo HEIGTH to HEIGHT
  Documentation/llvm: Note s390 LLVM=1 support with LLVM 18.1.0 and newer
  kbuild: Disable KCSAN for autogenerated *.mod.c intermediaries
  kbuild: make -Woverride-init warnings more consistent
  modpost: do not make find_tosym() return NULL
  export.h: remove include/asm-generic/export.h
  kconfig: do not reparent the menu inside a choice block
  MIPS: move unselectable FIT_IMAGE_FDT_EPM5 out of the "System type" choice
  cxl: remove CONFIG_CXL_PMU entry in drivers/cxl/Kconfig

7 months agoMerge tag 'edac_urgent_for_v6.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 31 Mar 2024 18:15:32 +0000 (11:15 -0700)]
Merge tag 'edac_urgent_for_v6.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras

Pull EDAC fixes from Borislav Petkov:

 - Fix more issues in the AMD FMPM driver

* tag 'edac_urgent_for_v6.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
  RAS: Avoid build errors when CONFIG_DEBUG_FS=n
  RAS/AMD/FMPM: Safely handle saved records of various sizes
  RAS/AMD/FMPM: Avoid NULL ptr deref in get_saved_records()

7 months agoMerge tag 'irq_urgent_for_v6.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 31 Mar 2024 18:04:51 +0000 (11:04 -0700)]
Merge tag 'irq_urgent_for_v6.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq fixes from Borislav Petkov:

 - Fix an unused function warning on irqchip/irq-armada-370-xp

 - Fix the IRQ sharing with pinctrl-amd and ACPI OSL

* tag 'irq_urgent_for_v6.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/armada-370-xp: Suppress unused-function warning
  genirq: Introduce IRQF_COND_ONESHOT and use it in pinctrl-amd

7 months agoMerge tag 'perf_urgent_for_v6.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 31 Mar 2024 17:43:11 +0000 (10:43 -0700)]
Merge tag 'perf_urgent_for_v6.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 perf fixes from Borislav Petkov:

 - Define the correct set of default hw events on AMD Zen4

 - Use the correct stalled cycles PMCs on AMD Zen2 and newer

 - Fix detection of the LBR freeze feature on AMD

* tag 'perf_urgent_for_v6.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/amd/core: Define a proper ref-cycles event for Zen 4 and later
  perf/x86/amd/core: Update and fix stalled-cycles-* events for Zen 2 and later
  perf/x86/amd/lbr: Use freeze based on availability
  x86/cpufeatures: Add new word for scattered features

7 months agoMerge tag 'timers_urgent_for_v6.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 31 Mar 2024 17:34:49 +0000 (10:34 -0700)]
Merge tag 'timers_urgent_for_v6.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timers update from Borislav Petkov:

 - Volunteer in Anna-Maria and Frederic as timers co-maintainers so that
   tglx can relax more :-P

* tag 'timers_urgent_for_v6.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  MAINTAINERS: Add co-maintainers for time[rs]

7 months agoMerge tag 'objtool_urgent_for_v6.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 31 Mar 2024 17:30:06 +0000 (10:30 -0700)]
Merge tag 'objtool_urgent_for_v6.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool fix from Borislav Petkov:

 - Fix a format specifier build error in objtool during an x32 build

* tag 'objtool_urgent_for_v6.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Fix compile failure when using the x32 compiler

7 months agoMerge tag 'x86_urgent_for_v6.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 31 Mar 2024 17:16:34 +0000 (10:16 -0700)]
Merge tag 'x86_urgent_for_v6.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:

 - Make sure single object builds in arch/x86/virt/ ala
      make ... arch/x86/virt/vmx/tdx/seamcall.o
   work again

 - Do not do ROM range scans and memory validation when the kernel is
   running as a SEV-SNP guest as those can get problematic and, before
   that, are not really needed in such a guest

 - Exclude the build-time generated vdso-image-x32.o object from objtool
   validation and in particular the return sites in there due to a
   warning which fires when an unpatched return thunk is being used

 - Improve the NMI CPUs stall message to show additional information
   about the state of each CPU wrt the NMI handler

 - Enable gcc named address spaces support only on !KCSAN configs due to
   compiler options incompatibility

 - Revert a change which was trying to use GB pages for mapping regions
   only when the regions would be large enough but that change lead to
   kexec failing

 - A documentation fixlet

* tag 'x86_urgent_for_v6.9_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/build: Use obj-y to descend into arch/x86/virt/
  x86/sev: Skip ROM range scans and validation for SEV-SNP guests
  x86/vdso: Fix rethunk patching for vdso-image-x32.o too
  x86/nmi: Upgrade NMI backtrace stall checks & messages
  x86/percpu: Disable named address spaces for KCSAN
  Revert "x86/mm/ident_map: Use gbpages only where full GB page should be mapped."
  Documentation/x86: Fix title underline length

7 months agokconfig: Fix typo HEIGTH to HEIGHT
Isak Ellmer [Sat, 30 Mar 2024 15:19:45 +0000 (16:19 +0100)]
kconfig: Fix typo HEIGTH to HEIGHT

Fixed a typo in some variables where height was misspelled as heigth.

Signed-off-by: Isak Ellmer <isak01@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
7 months agoDocumentation/llvm: Note s390 LLVM=1 support with LLVM 18.1.0 and newer
Nathan Chancellor [Wed, 27 Mar 2024 17:20:36 +0000 (10:20 -0700)]
Documentation/llvm: Note s390 LLVM=1 support with LLVM 18.1.0 and newer

As of the first s390 pull request during the 6.9 merge window,
commit 691632f0e869 ("Merge tag 's390-6.9-1' of
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux"), s390 can be
built with LLVM=1 when using LLVM 18.1.0, which is the first version
that has SystemZ support implemented in ld.lld and llvm-objcopy.

Update the supported architectures table in the Kbuild LLVM
documentation to note this explicitly to make it more discoverable by
users and other developers. Additionally, this brings s390 in line with
the rest of the architectures in the table, which all support LLVM=1.

Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
7 months agokbuild: Disable KCSAN for autogenerated *.mod.c intermediaries
Borislav Petkov (AMD) [Tue, 26 Mar 2024 20:25:48 +0000 (21:25 +0100)]
kbuild: Disable KCSAN for autogenerated *.mod.c intermediaries

When KCSAN and CONSTRUCTORS are enabled, one can trigger the

  "Unpatched return thunk in use. This should not happen!"

catch-all warning.

Usually, when objtool runs on the .o objects, it does generate a section
.return_sites which contains all offsets in the objects to the return
thunks of the functions present there. Those return thunks then get
patched at runtime by the alternatives.

KCSAN and CONSTRUCTORS add this to the object file's .text.startup
section:

  -------------------
  Disassembly of section .text.startup:

  ...

  0000000000000010 <_sub_I_00099_0>:
    10:   f3 0f 1e fa             endbr64
    14:   e8 00 00 00 00          call   19 <_sub_I_00099_0+0x9>
                          15: R_X86_64_PLT32      __tsan_init-0x4
    19:   e9 00 00 00 00          jmp    1e <__UNIQUE_ID___addressable_cryptd_alloc_aead349+0x6>
                          1a: R_X86_64_PLT32      __x86_return_thunk-0x4
  -------------------

which, if it is built as a module goes through the intermediary stage of
creating a <module>.mod.c file which, when translated, receives a second
constructor:

  -------------------
  Disassembly of section .text.startup:

  0000000000000010 <_sub_I_00099_0>:
    10:   f3 0f 1e fa             endbr64
    14:   e8 00 00 00 00          call   19 <_sub_I_00099_0+0x9>
                          15: R_X86_64_PLT32      __tsan_init-0x4
    19:   e9 00 00 00 00          jmp    1e <_sub_I_00099_0+0xe>
                          1a: R_X86_64_PLT32      __x86_return_thunk-0x4

  ...

  0000000000000030 <_sub_I_00099_0>:
    30:   f3 0f 1e fa             endbr64
    34:   e8 00 00 00 00          call   39 <_sub_I_00099_0+0x9>
                          35: R_X86_64_PLT32      __tsan_init-0x4
    39:   e9 00 00 00 00          jmp    3e <__ksymtab_cryptd_alloc_ahash+0x2>
                          3a: R_X86_64_PLT32      __x86_return_thunk-0x4
  -------------------

in the .ko file.

Objtool has run already so that second constructor's return thunk cannot
be added to the .return_sites section and thus the return thunk remains
unpatched and the warning rightfully fires.

Drop KCSAN flags from the mod.c generation stage as those constructors
do not contain data races one would be interested about.

Debugged together with David Kaplan <David.Kaplan@amd.com> and Nikolay
Borisov <nik.borisov@suse.com>.

Reported-by: Paul Menzel <pmenzel@molgen.mpg.de>
Closes: https://lore.kernel.org/r/0851a207-7143-417e-be31-8bf2b3afb57d@molgen.mpg.de
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Paul Menzel <pmenzel@molgen.mpg.de> # Dell XPS 13
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
Reviewed-by: Marco Elver <elver@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
7 months agokbuild: make -Woverride-init warnings more consistent
Arnd Bergmann [Tue, 26 Mar 2024 14:47:16 +0000 (15:47 +0100)]
kbuild: make -Woverride-init warnings more consistent

The -Woverride-init warn about code that may be intentional or not,
but the inintentional ones tend to be real bugs, so there is a bit of
disagreement on whether this warning option should be enabled by default
and we have multiple settings in scripts/Makefile.extrawarn as well as
individual subsystems.

Older versions of clang only supported -Wno-initializer-overrides with
the same meaning as gcc's -Woverride-init, though all supported versions
now work with both. Because of this difference, an earlier cleanup of
mine accidentally turned the clang warning off for W=1 builds and only
left it on for W=2, while it's still enabled for gcc with W=1.

There is also one driver that only turns the warning off for newer
versions of gcc but not other compilers, and some but not all the
Makefiles still use a cc-disable-warning conditional that is no
longer needed with supported compilers here.

Address all of the above by removing the special cases for clang
and always turning the warning off unconditionally where it got
in the way, using the syntax that is supported by both compilers.

Fixes: 2cd3271b7a31 ("kbuild: avoid duplicate warning options")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Andrew Jeffery <andrew@codeconstruct.com.au>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
7 months agoobjtool: Fix compile failure when using the x32 compiler
Mikulas Patocka [Sat, 30 Mar 2024 19:23:08 +0000 (20:23 +0100)]
objtool: Fix compile failure when using the x32 compiler

When compiling the v6.9-rc1 kernel with the x32 compiler, the following
errors are reported. The reason is that we take an "unsigned long"
variable and print it using "PRIx64" format string.

In file included from check.c:16:
check.c: In function ‘add_dead_ends’:
/usr/src/git/linux-2.6/tools/objtool/include/objtool/warn.h:46:17: error: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 5 has type ‘long unsigned int’ [-Werror=format=]
   46 |                 "%s: warning: objtool: " format "\n",   \
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~
check.c:613:33: note: in expansion of macro ‘WARN’
  613 |                                 WARN("can't find unreachable insn at %s+0x%" PRIx64,
      |                                 ^~~~
...

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: linux-kernel@vger.kernel.org
7 months agoMerge tag 'xfs-6.9-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Linus Torvalds [Sat, 30 Mar 2024 20:51:58 +0000 (13:51 -0700)]
Merge tag 'xfs-6.9-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull xfs fixes from Chandan Babu:

 - Allow stripe unit/width value passed via mount option to be written
   over existing values in the super block

 - Do not set current->journal_info to avoid its value from being miused
   by another filesystem context

* tag 'xfs-6.9-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: don't use current->journal_info
  xfs: allow sunit mount option to repair bad primary sb stripe values

7 months agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sat, 30 Mar 2024 20:44:52 +0000 (13:44 -0700)]
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes and updates from James Bottomley:
 "Fully half this pull is updates to lpfc and qla2xxx which got
  committed just as the merge window opened. A sizeable fraction of the
  driver updates are simple bug fixes (and lock reworks for bug fixes in
  the case of lpfc), so rather than splitting the few actual
  enhancements out, we're just adding the drivers to the -rc1 pull.

  The enhancements for lpfc are log message removals, copyright updates
  and three patches redefining types. For qla2xxx it's just removing a
  debug message on module removal and the manufacturer detail update.

  The two major fixes are the sg teardown race and a core error leg
  problem with the procfs directory not being removed if we destroy a
  created host that never got to the running state. The rest are minor
  fixes and constifications"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (41 commits)
  scsi: bnx2fc: Remove spin_lock_bh while releasing resources after upload
  scsi: core: Fix unremoved procfs host directory regression
  scsi: mpi3mr: Avoid memcpy field-spanning write WARNING
  scsi: sd: Fix TCG OPAL unlock on system resume
  scsi: sg: Avoid sg device teardown race
  scsi: lpfc: Copyright updates for 14.4.0.1 patches
  scsi: lpfc: Update lpfc version to 14.4.0.1
  scsi: lpfc: Define types in a union for generic void *context3 ptr
  scsi: lpfc: Define lpfc_dmabuf type for ctx_buf ptr
  scsi: lpfc: Define lpfc_nodelist type for ctx_ndlp ptr
  scsi: lpfc: Use a dedicated lock for ras_fwlog state
  scsi: lpfc: Release hbalock before calling lpfc_worker_wake_up()
  scsi: lpfc: Replace hbalock with ndlp lock in lpfc_nvme_unregister_port()
  scsi: lpfc: Update lpfc_ramp_down_queue_handler() logic
  scsi: lpfc: Remove IRQF_ONESHOT flag from threaded IRQ handling
  scsi: lpfc: Move NPIV's transport unregistration to after resource clean up
  scsi: lpfc: Remove unnecessary log message in queuecommand path
  scsi: qla2xxx: Update version to 10.02.09.200-k
  scsi: qla2xxx: Delay I/O Abort on PCI error
  scsi: qla2xxx: Change debug message during driver unload
  ...

7 months agoMerge tag 'i2c-for-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sat, 30 Mar 2024 20:16:21 +0000 (13:16 -0700)]
Merge tag 'i2c-for-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Pull i2c fix from Wolfram Sang:
 "A fix from Andi for I2C host drivers"

* tag 'i2c-for-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: i801: Fix a refactoring that broke a touchpad on Lenovo P1

7 months agoMerge tag 'usb-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sat, 30 Mar 2024 20:11:42 +0000 (13:11 -0700)]
Merge tag 'usb-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are a bunch of small USB fixes for reported problems and
  regressions for 6.9-rc2. Included in here are:

   - deadlock fixes for long-suffering issues

   - USB phy driver revert for reported problem

   - typec fixes for reported problems

   - duplicate id in dwc3 dropped

   - dwc2 driver fixes

   - udc driver warning fix

   - cdc-wdm race bugfix

   - other tiny USB bugfixes

  All of these have been in linux-next this past week with no reported
  issues"

* tag 'usb-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (26 commits)
  USB: core: Fix deadlock in port "disable" sysfs attribute
  USB: core: Add hub_get() and hub_put() routines
  usb: typec: ucsi: Check capabilities before cable and identity discovery
  usb: typec: ucsi: Clear UCSI_CCI_RESET_COMPLETE before reset
  usb: typec: ucsi_acpi: Refactor and fix DELL quirk
  usb: typec: ucsi: Ack unsupported commands
  usb: typec: ucsi: Check for notifications after init
  usb: typec: ucsi: Clear EVENT_PENDING under PPM lock
  usb: typec: Return size of buffer if pd_set operation succeeds
  usb: udc: remove warning when queue disabled ep
  usb: dwc3: pci: Drop duplicate ID
  usb: dwc3: Properly set system wakeup
  Revert "usb: phy: generic: Get the vbus supply"
  usb: cdc-wdm: close race between read and workqueue
  usb: dwc2: gadget: LPM flow fix
  usb: dwc2: gadget: Fix exiting from clock gating
  usb: dwc2: host: Fix ISOC flow in DDMA mode
  usb: dwc2: host: Fix remote wakeup from hibernation
  usb: dwc2: host: Fix hibernation flow
  USB: core: Fix deadlock in usb_deauthorize_interface()
  ...

7 months agoMerge tag 'staging-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Sat, 30 Mar 2024 19:59:00 +0000 (12:59 -0700)]
Merge tag 'staging-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging driver fixes from Greg KH:
 "Here are two small staging driver fixes for the vc04_services driver
  that resolve reported problems:

   - strncpy fix for information leak

   - another information leak discovered by the previous strncpy fix

  Both of these have been in linux-next all this past week with no
  reported issues"

* tag 'staging-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: vc04_services: fix information leak in create_component()
  staging: vc04_services: changen strncpy() to strscpy_pad()

7 months agoMerge tag 'i2c-host-fixes-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Wolfram Sang [Sat, 30 Mar 2024 14:37:54 +0000 (15:37 +0100)]
Merge tag 'i2c-host-fixes-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux into i2c/for-current

One fix in the i801 driver where a bug caused touchpad
malfunctions on some Lenovo P1 models by incorrectly overwriting
a status variable during successful SMBUS transactions.

7 months agox86/build: Use obj-y to descend into arch/x86/virt/
Masahiro Yamada [Sat, 30 Mar 2024 06:05:54 +0000 (15:05 +0900)]
x86/build: Use obj-y to descend into arch/x86/virt/

Commit c33621b4c5ad ("x86/virt/tdx: Wire up basic SEAMCALL functions")
introduced a new instance of core-y instead of the standardized obj-y
syntax.

X86 Makefiles descend into subdirectories of arch/x86/virt inconsistently;
into arch/x86/virt/ via core-y defined in arch/x86/Makefile, but into
arch/x86/virt/svm/ via obj-y defined in arch/x86/Kbuild.

This is problematic when you build a single object in parallel because
multiple threads attempt to build the same file.

  $ make -j$(nproc) arch/x86/virt/vmx/tdx/seamcall.o
    [ snip ]
    AS      arch/x86/virt/vmx/tdx/seamcall.o
    AS      arch/x86/virt/vmx/tdx/seamcall.o
  fixdep: error opening file: arch/x86/virt/vmx/tdx/.seamcall.o.d: No such file or directory
  make[4]: *** [scripts/Makefile.build:362: arch/x86/virt/vmx/tdx/seamcall.o] Error 2

Use the obj-y syntax, as it works correctly.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20240330060554.18524-1-masahiroy@kernel.org
7 months agoMerge tag 'drm-fixes-2024-03-30' of https://gitlab.freedesktop.org/drm/kernel
Linus Torvalds [Fri, 29 Mar 2024 22:51:15 +0000 (15:51 -0700)]
Merge tag 'drm-fixes-2024-03-30' of https://gitlab.freedesktop.org/drm/kernel

Pull drm fixes from Dave Airlie:
 "Regular fixes for rc2, quite a few i915/amdgpu as usual, some xe, and
  then mostly scattered around. rc3 might be quieter with the holidays
  but we shall see.

  bridge:
   - select DRM_KMS_HELPER

  dma-buf:
   - fix NULL-pointer deref

  dp:
   - fix div-by-zero in DP MST unplug code

  fbdev:
   - select FB_IOMEM_FOPS for SBus

  sched:
   - fix NULL-pointer deref

  xe:
   - Fix build on mips
   - Fix wrong bound checks
   - Fix use of msec rather than jiffies
   - Remove dead code

  amdgpu:
   - SMU 14.0.1 updates
   - DCN 3.5.x updates
   - VPE fix
   - eDP panel flickering fix
   - Suspend fix
   - PSR fix
   - DCN 3.0+ fix
   - VCN 4.0.6 updates
   - debugfs fix

  amdkfd:
   - DMA-Buf fix
   - GFX 9.4.2 TLB flush fix
   - CP interrupt fix

  i915:
   - Fix for BUG_ON/BUILD_BUG_ON IN I915_memcpy.c
   - Update a MTL workaround
   - Fix locking inversion in hwmon's sysfs
   - Remove a bogus error message around PXP
   - Fix UAF on VMA
   - Reset queue_priority_hint on parking
   - Display Fixes:
   - Remove duplicated audio enable/disable on SDVO and DP
   - Disable AuxCCS for Xe driver
   - Revert init order of MIPI DSI
   - DRRS debugfs fix with an extra refactor patch
   - VRR related fixes
   - Fix a JSL eDP corruption
   - Fix the cursor physical dma address
   - BIOS VBT related fix

  nouveau:
   - dmem: handle kcalloc() allocation failures

  qxl:
   - remove unused variables

  rockchip:
   - vop2: remove support for AR30 and AB30 formats

  vmwgfx:
   - debugfs: create ttm_resource_manager entry only if needed"

* tag 'drm-fixes-2024-03-30' of https://gitlab.freedesktop.org/drm/kernel: (55 commits)
  drm/i915/bios: Tolerate devdata==NULL in intel_bios_encoder_supports_dp_dual_mode()
  drm/i915: Pre-populate the cursor physical dma address
  drm/i915/gt: Reset queue_priority_hint on parking
  drm/i915/vma: Fix UAF on destroy against retire race
  drm/i915: Do not print 'pxp init failed with 0' when it succeed
  drm/i915: Do not match JSL in ehl_combo_pll_div_frac_wa_needed()
  drm/i915/hwmon: Fix locking inversion in sysfs getter
  drm/i915/dsb: Fix DSB vblank waits when using VRR
  drm/i915/vrr: Generate VRR "safe window" for DSB
  drm/i915/display/debugfs: Fix duplicate checks in i915_drrs_status
  drm/i915/drrs: Refactor CPU transcoder DRRS check
  drm/i915/mtl: Update workaround 14018575942
  drm/i915/dsi: Go back to the previous INIT_OTP/DISPLAY_ON order, mostly
  drm/i915/display: Disable AuxCCS framebuffers if built for Xe
  drm/i915: Stop doing double audio enable/disable on SDVO and g4x+ DP
  drm/i915: Add includes for BUG_ON/BUILD_BUG_ON in i915_memcpy.c
  drm/qxl: remove unused variable from `qxl_process_single_command()`
  drm/qxl: remove unused `count` variable from `qxl_surface_id_alloc()`
  drm/i915: add bug.h include to i915_memcpy.c
  drm/vmwgfx: Create debugfs ttm_resource_manager entry only if needed
  ...

7 months agoMerge tag 'linux_kselftest-fixes-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kerne...
Linus Torvalds [Fri, 29 Mar 2024 22:38:29 +0000 (15:38 -0700)]
Merge tag 'linux_kselftest-fixes-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest fixes from Shuah Khan:
 "Fixes to seccomp and ftrace tests and a change to add config file for
  dmabuf-heap test to increase coverage"

* tag 'linux_kselftest-fixes-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: dmabuf-heap: add config file for the test
  selftests/seccomp: Try to fit runtime of benchmark into timeout
  selftests/ftrace: Fix event filter target_func selection

7 months agoMerge tag 'linux_kselftest-kunit-fixes-6.9-rc2' of git://git.kernel.org/pub/scm/linux...
Linus Torvalds [Fri, 29 Mar 2024 22:35:12 +0000 (15:35 -0700)]
Merge tag 'linux_kselftest-kunit-fixes-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull KUnit fixes from Shuah Khan:
 "One urgent fix for --alltests build failure related to renaming of
  CONFIG_DAMON_DBGFS to DAMON_DBGFS_DEPRECATED to the missing config
  option"

* tag 'linux_kselftest-kunit-fixes-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  kunit: configs: Enable CONFIG_DAMON_DBGFS_DEPRECATED for --alltests

7 months agoselftests: dmabuf-heap: add config file for the test
Muhammad Usama Anjum [Tue, 5 Mar 2024 06:08:47 +0000 (11:08 +0500)]
selftests: dmabuf-heap: add config file for the test

The config fragment enlists all the config options needed for the test.
This config is merged into the kernel's config on which this test is
run.

Fixed whitespace errors during commit:
Shuah Khan <skhan@linuxfoundation.org>

Reviewed-by: T.J. Mercier <tjmercier@google.com>
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
7 months agoselftests/seccomp: Try to fit runtime of benchmark into timeout
Mark Brown [Mon, 25 Mar 2024 16:57:59 +0000 (16:57 +0000)]
selftests/seccomp: Try to fit runtime of benchmark into timeout

The seccomp benchmark runs five scenarios, one calibration run with no
seccomp filters enabled then four further runs each adding a filter. The
calibration run times itself for 15s and then each additional run executes
for the same number of times.

Currently the seccomp tests, including the benchmark, run with an extended
120s timeout but this is not sufficient to robustly run the tests on a lot
of platforms. Sample timings from some recent runs:

   Platform          Run 1  Run 2  Run 3  Run 4
   ---------         -----  -----  -----  -----
   PowerEdge R200    16.6s  16.6s  31.6s  37.4s
   BBB (arm)         20.4s  20.4s  54.5s
   Synquacer (arm64) 20.7s  23.7s  40.3s

The x86 runs from the PowerEdge are quite marginal and routinely fail, for
the successful run reported here the timed portions of the run are at
117.2s leaving less than 3s of margin which is frequently breached. The
added overhead of adding filters on the other platforms is such that there
is no prospect of their runs fitting into the 120s timeout, especially
on 32 bit arm where there is no BPF JIT.

While we could lower the time we calibrate for I'm also already seeing the
currently completing runs reporting issues with the per filter overheads
not matching expectations:

Let's instead raise the timeout to 180s which is only a 50% increase on the
current timeout which is itself not *too* large given that there's only two
tests in this suite.

Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
7 months agoselftests/ftrace: Fix event filter target_func selection
Mark Rutland [Wed, 20 Mar 2024 14:18:44 +0000 (14:18 +0000)]
selftests/ftrace: Fix event filter target_func selection

The event filter function test has been failing in our internal test
farm:

| # not ok 33 event filter function - test event filtering on functions

Running the test in verbose mode indicates that this is because the test
erroneously determines that kmem_cache_free() is the most common caller
of kmem_cache_free():

  # # + cut -d: -f3 trace
  # # + sed s/call_site=([^+]*)+0x.*/1/
  # # + sort
  # # + uniq -c
  # # + sort
  # # + tail -n 1
  # # + sed s/^[ 0-9]*//
  # # + target_func=kmem_cache_free

... and as kmem_cache_free() doesn't call itself, setting this as the
filter function for kmem_cache_free() results in no hits, and
consequently the test fails:

  # # + grep kmem_cache_free trace
  # # + grep kmem_cache_free
  # # + wc -l
  # # + hitcnt=0
  # # + grep kmem_cache_free trace
  # # + grep -v kmem_cache_free
  # # + wc -l
  # # + misscnt=0
  # # + [ 0 -eq 0 ]
  # # + exit_fail

This seems to be because the system in question has tasks with ':' in
their name (which a number of kernel worker threads have). These show up
in the trace, e.g.

  test:.sh-1299    [004] .....  2886.040608: kmem_cache_free: call_site=putname+0xa4/0xc8 ptr=000000000f4d22f4 name=names_cache

... and so when we try to extact the call_site with:

  cut -d: -f3 trace | sed 's/call_site=\([^+]*\)+0x.*/\1/'

... the 'cut' command will extrace the column containing
'kmem_cache_free' rather than the column containing 'call_site=...', and
the 'sed' command will leave this unchanged. Consequently, the test will
decide to use 'kmem_cache_free' as the filter function, resulting in the
failure seen above.

Fix this by matching the 'call_site=<func>' part specifically to extract
the function name.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reported-by: Aishwarya TCV <aishwarya.tcv@arm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-kselftest@vger.kernel.org
Cc: linux-trace-kernel@vger.kernel.org
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
7 months agoMerge tag 'drm-intel-fixes-2024-03-28' of https://anongit.freedesktop.org/git/drm...
Dave Airlie [Fri, 29 Mar 2024 19:33:22 +0000 (05:33 +1000)]
Merge tag 'drm-intel-fixes-2024-03-28' of https://anongit.freedesktop.org/git/drm/drm-intel into drm-fixes

Core/GT Fixes:
- Fix for BUG_ON/BUILD_BUG_ON IN I915_memcpy.c (Joonas)
- Update a MTL workaround (Tejas)
- Fix locking inversion in hwmon's sysfs (Janusz)
- Remove a bogus error message around PXP (Jose)
- Fix UAF on VMA (Janusz)
- Reset queue_priority_hint on parking (Chris)

Display Fixes:
- Remove duplicated audio enable/disable on SDVO and DP (Ville)
- Disable AuxCCS for Xe driver (Juha-Pekka)
- Revert init order of MIPI DSI (Ville)
- DRRS debugfs fix with an extra refactor patch (Bhanuprakash)
- VRR related fixes (Ville)
- Fix a JSL eDP corruption (Jonathon)
- Fix the cursor physical dma address (Ville)
- BIOS VBT related fix (Ville)

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ZgYaIVgjIs30mIvS@intel.com
7 months agox86/bugs: Fix the SRSO mitigation on Zen3/4
Borislav Petkov (AMD) [Thu, 28 Mar 2024 12:59:05 +0000 (13:59 +0100)]
x86/bugs: Fix the SRSO mitigation on Zen3/4

The original version of the mitigation would patch in the calls to the
untraining routines directly.  That is, the alternative() in UNTRAIN_RET
will patch in the CALL to srso_alias_untrain_ret() directly.

However, even if commit e7c25c441e9e ("x86/cpu: Cleanup the untrain
mess") meant well in trying to clean up the situation, due to micro-
architectural reasons, the untraining routine srso_alias_untrain_ret()
must be the target of a CALL instruction and not of a JMP instruction as
it is done now.

Reshuffle the alternative macros to accomplish that.

Fixes: e7c25c441e9e ("x86/cpu: Cleanup the untrain mess")
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 months agoMerge tag '6.9-rc1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Fri, 29 Mar 2024 19:06:09 +0000 (12:06 -0700)]
Merge tag '6.9-rc1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull smb client fixes from Steve French:

 - Add missing trace point (noticed when debugging the recent mknod LSM
   regression)

 - fscache fix

* tag '6.9-rc1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: Fix duplicate fscache cookie warnings
  smb3: add trace event for mknod

7 months agoMerge tag 'thermal-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Fri, 29 Mar 2024 18:50:38 +0000 (11:50 -0700)]
Merge tag 'thermal-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull thermal control fixes from Rafael Wysocki:
 "These revert a problematic optimization commit and address a devfreq
  cooling device issue.

  Specifics:

   - Revert thermal core optimization that introduced a functional issue
     causing a critical trip point to be crossed in some cases (Daniel
     Lezcano)

   - Add missing conversion between different state ranges to the
     devfreq cooling device driver (Ye Zhang)"

* tag 'thermal-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  thermal: devfreq_cooling: Fix perf state when calculate dfc res_util
  Revert "thermal: core: Don't update trip points inside the hysteresis range"

7 months agoMerge tag 'acpi-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Fri, 29 Mar 2024 18:37:12 +0000 (11:37 -0700)]
Merge tag 'acpi-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
 "These fix two issues that may lead to attempts to use memory that has
  been freed already.

  Specifics:

   - Drop __exit annotation from einj_remove() in the ACPI APEI code
     because this function can be called during runtime (Arnd Bergmann)

   - Make acpi_db_walk_for_fields() check acpi_evaluate_object() return
     value to avoid accessing memory that has been freed (Nikita
     Kiryushin)"

* tag 'acpi-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPICA: debugger: check status of acpi_evaluate_object() in acpi_db_walk_for_fields()
  ACPI: APEI: EINJ: mark remove callback as non-__exit

7 months agomm: clean up populate_vma_page_range() FOLL_* flag handling
Linus Torvalds [Fri, 29 Mar 2024 18:06:13 +0000 (11:06 -0700)]
mm: clean up populate_vma_page_range() FOLL_* flag handling

The code wasn't exactly wrong, but it was very odd, and it used
FOLL_FORCE together with FOLL_WRITE when it really didn't need to (it
only set FOLL_WRITE for writable mappings, so then the FOLL_FORCE was
pointless).

It also pointlessly called __get_user_pages() even when it knew it
wouldn't populate anything because the vma wasn't accessible and it
explicitly tested for and did *not* set FOLL_FORCE for inaccessible
vma's.

This code does need to use FOLL_FORCE, because we want to do fault in
writable shared mappings, but then the mapping may not actually be
readable.  And we don't want to use FOLL_WRITE (which would match the
permission of the vma), because that would also dirty the pages, which
we don't want to do.

For very similar reasons, FOLL_FORCE populates a executable-only mapping
with no read permissions. We don't have a FOLL_EXEC flag.

Yes, it would probably be cleaner to split FOLL_WRITE into two bits (for
separate permission and dirty bit handling), and add a FOLL_EXEC flag
for the "GUP executable page" case.  That would allow us to avoid
FOLL_FORCE entirely here.

But that's not how our FOLL_xyz bits have traditionally worked, and that
would be a much bigger patch.

So this at least avoids the FOLL_FORCE | FOLL_WRITE combination that
made one of my experimental validation patches trigger a warning.  That
warning was a false positive (and my experimental patch was incomplete
anyway), but it all made me look at this and decide to clean at least
this small case up.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 months agoMerge branch 'acpica'
Rafael J. Wysocki [Fri, 29 Mar 2024 18:00:09 +0000 (19:00 +0100)]
Merge branch 'acpica'

* acpica:
  ACPICA: debugger: check status of acpi_evaluate_object() in acpi_db_walk_for_fields()

7 months agoMerge tag 'efi-fixes-for-v6.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 29 Mar 2024 16:51:04 +0000 (09:51 -0700)]
Merge tag 'efi-fixes-for-v6.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi

Pull EFI fixes from Ard Biesheuvel:
 "These address all the outstanding EFI/x86 boot related regressions:

   - Revert to the old initrd memory allocation soft limit of INT_MAX,
     which was dropped inadvertently

   - Ensure that startup_32() is entered with a valid boot_params
     pointer when using the new EFI mixed mode protocol

   - Fix a compiler warning introduced by a fix from the previous pull"

* tag 'efi-fixes-for-v6.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  x86/efistub: Reinstate soft limit for initrd loading
  efi/libstub: Cast away type warning in use of max()
  x86/efistub: Add missing boot_params for mixed mode compat entry

7 months agoMerge tag 'block-6.9-20240329' of git://git.kernel.dk/linux
Linus Torvalds [Fri, 29 Mar 2024 16:40:22 +0000 (09:40 -0700)]
Merge tag 'block-6.9-20240329' of git://git.kernel.dk/linux

Pull block fixes from Jens Axboe:
 "Small round of minor fixes or cleanups for the 6.9-rc2 kernel, one
  fixing an issue introduced in 6.8"

* tag 'block-6.9-20240329' of git://git.kernel.dk/linux:
  block: Do not force full zone append completion in req_bio_endio()
  block: don't reject too large max_user_sectors in blk_validate_limits
  block: Make blk_rq_set_mixed_merge() static

7 months agoMerge tag 'for-6.9/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/devic...
Linus Torvalds [Fri, 29 Mar 2024 16:33:05 +0000 (09:33 -0700)]
Merge tag 'for-6.9/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:

 - Fix MAINTAINERS to not include M: dm-devel for DM entries.

 - Fix DM vdo's murmurhash to use proper byteswapping methods.

 - Fix DM integrity clang warning about comparison out-of-range.

* tag 'for-6.9/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm integrity: fix out-of-range warning
  dm vdo murmurhash3: use kernel byteswapping routines instead of GCC ones
  MAINTAINERS: Remove incorrect M: tag for dm-devel@lists.linux.dev

7 months agoMerge tag 'gpio-fixes-for-v6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 29 Mar 2024 16:26:34 +0000 (09:26 -0700)]
Merge tag 'gpio-fixes-for-v6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio fixes from Bartosz Golaszewski:

 - fix a procfs failure when requesting an interrupt with a label
   containing the '/' character

 - add missing stubs for GPIO lookup functions for !GPIOLIB

 - fix debug messages that would print "(null)" for NULL strings

* tag 'gpio-fixes-for-v6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpiolib: Fix debug messaging in gpiod_find_and_request()
  gpiolib: Add stubs for GPIO lookup functions
  gpio: cdev: sanitize the label before requesting the interrupt

7 months agodm integrity: fix out-of-range warning
Arnd Bergmann [Thu, 28 Mar 2024 14:30:39 +0000 (15:30 +0100)]
dm integrity: fix out-of-range warning

Depending on the value of CONFIG_HZ, clang complains about a pointless
comparison:

drivers/md/dm-integrity.c:4085:12: error: result of comparison of
                        constant 42949672950 with expression of type
                        'unsigned int' is always false
                        [-Werror,-Wtautological-constant-out-of-range-compare]
                        if (val >= (uint64_t)UINT_MAX * 1000 / HZ) {

As the check remains useful for other configurations, shut up the
warning by adding a second type cast to uint64_t.

Fixes: 468dfca38b1a ("dm integrity: add a bitmap mode")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Mikulas Patocka <mpatocka@redhat.com>
Reviewed-by: Justin Stitt <justinstitt@google.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
7 months agodm vdo murmurhash3: use kernel byteswapping routines instead of GCC ones
Ken Raeburn [Mon, 25 Mar 2024 19:22:45 +0000 (15:22 -0400)]
dm vdo murmurhash3: use kernel byteswapping routines instead of GCC ones

Also open-code the calls.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Ken Raeburn <raeburn@redhat.com>
Signed-off-by: Matthew Sakai <msakai@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
7 months agoMAINTAINERS: Remove incorrect M: tag for dm-devel@lists.linux.dev
Kuan-Wei Chiu [Tue, 19 Mar 2024 18:18:42 +0000 (02:18 +0800)]
MAINTAINERS: Remove incorrect M: tag for dm-devel@lists.linux.dev

The dm-devel@lists.linux.dev mailing list should only be listed under
the L: (List) tag in the MAINTAINERS file. However, it was incorrectly
listed under both L: and M: (Maintainers) tags, which is not accurate.
Remove the M: tag for dm-devel@lists.linux.dev in the MAINTAINERS file
to reflect the correct categorization.

Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
7 months agoMerge tag 'mmc-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Linus Torvalds [Fri, 29 Mar 2024 00:15:33 +0000 (17:15 -0700)]
Merge tag 'mmc-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:
 "MMC core:
   - Fix regression for the mmc ioctl

  MMC host:
   - sdhci-of-dwcmshc: Fixup PM support in ->remove_new()
   - sdhci-omap: Re-tune when device became runtime suspended"

* tag 'mmc-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  sdhci-of-dwcmshc: disable PM runtime in dwcmshc_remove()
  mmc: sdhci-omap: re-tuning is needed after a pm transition to support emmc HS200 mode
  mmc: core: Avoid negative index with array access
  mmc: core: Initialize mmc_blk_ioc_data

7 months agoblock: Do not force full zone append completion in req_bio_endio()
Damien Le Moal [Thu, 28 Mar 2024 00:43:40 +0000 (09:43 +0900)]
block: Do not force full zone append completion in req_bio_endio()

This reverts commit 748dc0b65ec2b4b7b3dbd7befcc4a54fdcac7988.

Partial zone append completions cannot be supported as there is no
guarantees that the fragmented data will be written sequentially in the
same manner as with a full command. Commit 748dc0b65ec2 ("block: fix
partial zone append completion handling in req_bio_endio()") changed
req_bio_endio() to always advance a partially failed BIO by its full
length, but this can lead to incorrect accounting. So revert this
change and let low level device drivers handle this case by always
failing completely zone append operations. With this revert, users will
still see an IO error for a partially completed zone append BIO.

Fixes: 748dc0b65ec2 ("block: fix partial zone append completion handling in req_bio_endio()")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240328004409.594888-2-dlemoal@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
7 months agoMerge tag 'sound-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Thu, 28 Mar 2024 21:54:49 +0000 (14:54 -0700)]
Merge tag 'sound-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A collection of device-specific small fixes: a series of fixes for
  TAS2781 HD-audio codec, ASoC SOF, Cirrus CS35L56 and a couple of
  legacy drivers"

* tag 'sound-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/tas2781: remove useless dev_dbg from playback_hook
  ALSA: hda/tas2781: add debug statements to kcontrols
  ALSA: hda/tas2781: add locks to kcontrols
  ALSA: hda/tas2781: remove digital gain kcontrol
  ALSA: aoa: avoid false-positive format truncation warning
  ALSA: sh: aica: reorder cleanup operations to avoid UAF bugs
  ALSA: hda: cs35l56: Set the init_done flag before component_add()
  ALSA: hda: cs35l56: Raise device name message log level
  ASoC: SOF: ipc4-topology: support NHLT device type
  ALSA: hda: intel-nhlt: add intel_nhlt_ssp_device_type() function

7 months agoMerge tag 'iommu-fixes-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 28 Mar 2024 21:40:46 +0000 (14:40 -0700)]
Merge tag 'iommu-fixes-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull iommu fixes from Joerg Roedel:
 "ARM SMMU fixes:

   - Fix swabbing of the STE fields in the unlikely event of running on
     a big-endian machine

   - Fix setting of STE.SHCFG on hardware that doesn't implement support
     for attribute overrides

  IOMMU core:

   - PASID validation fix in device attach path"

* tag 'iommu-fixes-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu: Validate the PASID in iommu_attach_device_pasid()
  iommu/arm-smmu-v3: Fix access for STE.SHCFG
  iommu/arm-smmu-v3: Add cpu_to_le64() around STRTAB_STE_0_V

7 months agoMerge tag 'nfsd-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux
Linus Torvalds [Thu, 28 Mar 2024 21:35:32 +0000 (14:35 -0700)]
Merge tag 'nfsd-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd fixes from Chuck Lever:

 - Address three recently introduced regressions

* tag 'nfsd-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
  NFSD: CREATE_SESSION must never cache NFS4ERR_DELAY replies
  SUNRPC: Revert 561141dd494382217bace4d1a51d08168420eace
  nfsd: Fix error cleanup path in nfsd_rename()

7 months agoMerge tag 'net-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Linus Torvalds [Thu, 28 Mar 2024 20:09:37 +0000 (13:09 -0700)]
Merge tag 'net-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from bpf, WiFi and netfilter.

  Current release - regressions:

   - ipv6: fix address dump when IPv6 is disabled on an interface

  Current release - new code bugs:

   - bpf: temporarily disable atomic operations in BPF arena

   - nexthop: fix uninitialized variable in nla_put_nh_group_stats()

  Previous releases - regressions:

   - bpf: protect against int overflow for stack access size

   - hsr: fix the promiscuous mode in offload mode

   - wifi: don't always use FW dump trig

   - tls: adjust recv return with async crypto and failed copy to
     userspace

   - tcp: properly terminate timers for kernel sockets

   - ice: fix memory corruption bug with suspend and rebuild

   - at803x: fix kernel panic with at8031_probe

   - qeth: handle deferred cc1

  Previous releases - always broken:

   - bpf: fix bug in BPF_LDX_MEMSX

   - netfilter: reject table flag and netdev basechain updates

   - inet_defrag: prevent sk release while still in use

   - wifi: pick the version of SESSION_PROTECTION_NOTIF

   - wwan: t7xx: split 64bit accesses to fix alignment issues

   - mlxbf_gige: call request_irq() after NAPI initialized

   - hns3: fix kernel crash when devlink reload during pf
     initialization"

* tag 'net-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (81 commits)
  inet: inet_defrag: prevent sk release while still in use
  Octeontx2-af: fix pause frame configuration in GMP mode
  net: lan743x: Add set RFE read fifo threshold for PCI1x1x chips
  net: bcmasp: Remove phy_{suspend/resume}
  net: bcmasp: Bring up unimac after PHY link up
  net: phy: qcom: at803x: fix kernel panic with at8031_probe
  netfilter: arptables: Select NETFILTER_FAMILY_ARP when building arp_tables.c
  netfilter: nf_tables: skip netdev hook unregistration if table is dormant
  netfilter: nf_tables: reject table flag and netdev basechain updates
  netfilter: nf_tables: reject destroy command to remove basechain hooks
  bpf: update BPF LSM designated reviewer list
  bpf: Protect against int overflow for stack access size
  bpf: Check bloom filter map value size
  bpf: fix warning for crash_kexec
  selftests: netdevsim: set test timeout to 10 minutes
  net: wan: framer: Add missing static inline qualifiers
  mlxbf_gige: call request_irq() after NAPI initialized
  tls: get psock ref after taking rxlock to avoid leak
  selftests: tls: add test with a partially invalid iov
  tls: adjust recv return with async crypto and failed copy to userspace
  ...

7 months agoMerge tag 'drm-misc-fixes-2024-03-28' of https://gitlab.freedesktop.org/drm/misc...
Dave Airlie [Thu, 28 Mar 2024 19:00:13 +0000 (05:00 +1000)]
Merge tag 'drm-misc-fixes-2024-03-28' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes

Short summary of fixes pull:

bridge:
- select DRM_KMS_HELPER

dma-buf:
- fix NULL-pointer deref

dp:
- fix div-by-zero in DP MST unplug code

fbdev:
- select FB_IOMEM_FOPS for SBus

nouveau:
- dmem: handle kcalloc() allocation failures

qxl:
- remove unused variables

rockchip:
- vop2: remove support for AR30 and AB30 formats

sched:
- fix NULL-pointer deref

vmwgfx:
- debugfs: create ttm_resource_manager entry only if needed

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20240328134417.GA8673@localhost.localdomain
7 months agokunit: configs: Enable CONFIG_DAMON_DBGFS_DEPRECATED for --alltests
David Gow [Tue, 26 Mar 2024 10:07:38 +0000 (18:07 +0800)]
kunit: configs: Enable CONFIG_DAMON_DBGFS_DEPRECATED for --alltests

This is required, as CONFIG_DAMON_DEBUGFS is enabled, and --alltests UML
builds will fail due to the missing config option otherwise.

Fixes: f4cba4bf6777 ("mm/damon: rename CONFIG_DAMON_DBGFS to DAMON_DBGFS_DEPRECATED")
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Rae Moar <rmoar@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
7 months agodrm/i915/bios: Tolerate devdata==NULL in intel_bios_encoder_supports_dp_dual_mode()
Ville Syrjälä [Tue, 19 Mar 2024 09:24:42 +0000 (11:24 +0200)]
drm/i915/bios: Tolerate devdata==NULL in intel_bios_encoder_supports_dp_dual_mode()

If we have no VBT, or the VBT didn't declare the encoder
in question, we won't have the 'devdata' for the encoder.
Instead of oopsing just bail early.

We won't be able to tell whether the port is DP++ or not,
but so be it.

Cc: stable@vger.kernel.org
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/10464
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240319092443.15769-1-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 26410896206342c8a80d2b027923e9ee7d33b733)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
7 months agodrm/i915: Pre-populate the cursor physical dma address
Ville Syrjälä [Mon, 25 Mar 2024 17:57:38 +0000 (19:57 +0200)]
drm/i915: Pre-populate the cursor physical dma address

Calling i915_gem_object_get_dma_address() from the vblank
evade critical section triggers might_sleep().

While we know that we've already pinned the framebuffer
and thus i915_gem_object_get_dma_address() will in fact
not sleep in this case, it seems reasonable to keep the
unconditional might_sleep() for maximum coverage.

So let's instead pre-populate the dma address during
fb pinning, which all happens before we enter the
vblank evade critical section.

We can use u32 for the dma address as this class of
hardware doesn't support >32bit addresses.

Cc: stable@vger.kernel.org
Fixes: 0225a90981c8 ("drm/i915: Make cursor plane registers unlocked")
Reported-by: Borislav Petkov <bp@alien8.de>
Closes: https://lore.kernel.org/intel-gfx/20240227100342.GAZd2zfmYcPS_SndtO@fat_crate.local/
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240325175738.3440-1-ville.syrjala@linux.intel.com
Tested-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
(cherry picked from commit c1289a5c3594cf04caa94ebf0edeb50c62009f1f)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
7 months agodrm/i915/gt: Reset queue_priority_hint on parking
Chris Wilson [Mon, 18 Mar 2024 13:58:47 +0000 (14:58 +0100)]
drm/i915/gt: Reset queue_priority_hint on parking

Originally, with strict in order execution, we could complete execution
only when the queue was empty. Preempt-to-busy allows replacement of an
active request that may complete before the preemption is processed by
HW. If that happens, the request is retired from the queue, but the
queue_priority_hint remains set, preventing direct submission until
after the next CS interrupt is processed.

This preempt-to-busy race can be triggered by the heartbeat, which will
also act as the power-management barrier and upon completion allow us to
idle the HW. We may process the completion of the heartbeat, and begin
parking the engine before the CS event that restores the
queue_priority_hint, causing us to fail the assertion that it is MIN.

<3>[  166.210729] __engine_park:283 GEM_BUG_ON(engine->sched_engine->queue_priority_hint != (-((int)(~0U >> 1)) - 1))
<0>[  166.210781] Dumping ftrace buffer:
<0>[  166.210795] ---------------------------------
...
<0>[  167.302811] drm_fdin-1097      2..s1. 165741070us : trace_ports: 0000:00:02.0 rcs0: promote { ccid:20 1217:2 prio 0 }
<0>[  167.302861] drm_fdin-1097      2d.s2. 165741072us : execlists_submission_tasklet: 0000:00:02.0 rcs0: preempting last=1217:2, prio=0, hint=2147483646
<0>[  167.302928] drm_fdin-1097      2d.s2. 165741072us : __i915_request_unsubmit: 0000:00:02.0 rcs0: fence 1217:2, current 0
<0>[  167.302992] drm_fdin-1097      2d.s2. 165741073us : __i915_request_submit: 0000:00:02.0 rcs0: fence 3:4660, current 4659
<0>[  167.303044] drm_fdin-1097      2d.s1. 165741076us : execlists_submission_tasklet: 0000:00:02.0 rcs0: context:3 schedule-in, ccid:40
<0>[  167.303095] drm_fdin-1097      2d.s1. 165741077us : trace_ports: 0000:00:02.0 rcs0: submit { ccid:40 3:4660* prio 2147483646 }
<0>[  167.303159] kworker/-89       11..... 165741139us : i915_request_retire.part.0: 0000:00:02.0 rcs0: fence c90:2, current 2
<0>[  167.303208] kworker/-89       11..... 165741148us : __intel_context_do_unpin: 0000:00:02.0 rcs0: context:c90 unpin
<0>[  167.303272] kworker/-89       11..... 165741159us : i915_request_retire.part.0: 0000:00:02.0 rcs0: fence 1217:2, current 2
<0>[  167.303321] kworker/-89       11..... 165741166us : __intel_context_do_unpin: 0000:00:02.0 rcs0: context:1217 unpin
<0>[  167.303384] kworker/-89       11..... 165741170us : i915_request_retire.part.0: 0000:00:02.0 rcs0: fence 3:4660, current 4660
<0>[  167.303434] kworker/-89       11d..1. 165741172us : __intel_context_retire: 0000:00:02.0 rcs0: context:1216 retire runtime: { total:56028ns, avg:56028ns }
<0>[  167.303484] kworker/-89       11..... 165741198us : __engine_park: 0000:00:02.0 rcs0: parked
<0>[  167.303534]   <idle>-0         5d.H3. 165741207us : execlists_irq_handler: 0000:00:02.0 rcs0: semaphore yield: 00000040
<0>[  167.303583] kworker/-89       11..... 165741397us : __intel_context_retire: 0000:00:02.0 rcs0: context:1217 retire runtime: { total:325575ns, avg:0ns }
<0>[  167.303756] kworker/-89       11..... 165741777us : __intel_context_retire: 0000:00:02.0 rcs0: context:c90 retire runtime: { total:0ns, avg:0ns }
<0>[  167.303806] kworker/-89       11..... 165742017us : __engine_park: __engine_park:283 GEM_BUG_ON(engine->sched_engine->queue_priority_hint != (-((int)(~0U >> 1)) - 1))
<0>[  167.303811] ---------------------------------
<4>[  167.304722] ------------[ cut here ]------------
<2>[  167.304725] kernel BUG at drivers/gpu/drm/i915/gt/intel_engine_pm.c:283!
<4>[  167.304731] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
<4>[  167.304734] CPU: 11 PID: 89 Comm: kworker/11:1 Tainted: G        W          6.8.0-rc2-CI_DRM_14193-gc655e0fd2804+ #1
<4>[  167.304736] Hardware name: Intel Corporation Rocket Lake Client Platform/RocketLake S UDIMM 6L RVP, BIOS RKLSFWI1.R00.3173.A03.2204210138 04/21/2022
<4>[  167.304738] Workqueue: i915-unordered retire_work_handler [i915]
<4>[  167.304839] RIP: 0010:__engine_park+0x3fd/0x680 [i915]
<4>[  167.304937] Code: 00 48 c7 c2 b0 e5 86 a0 48 8d 3d 00 00 00 00 e8 79 48 d4 e0 bf 01 00 00 00 e8 ef 0a d4 e0 31 f6 bf 09 00 00 00 e8 03 49 c0 e0 <0f> 0b 0f 0b be 01 00 00 00 e8 f5 61 fd ff 31 c0 e9 34 fd ff ff 48
<4>[  167.304940] RSP: 0018:ffffc9000059fce0 EFLAGS: 00010246
<4>[  167.304942] RAX: 0000000000000200 RBX: 0000000000000000 RCX: 0000000000000006
<4>[  167.304944] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000009
<4>[  167.304946] RBP: ffff8881330ca1b0 R08: 0000000000000001 R09: 0000000000000001
<4>[  167.304947] R10: 0000000000000001 R11: 0000000000000001 R12: ffff8881330ca000
<4>[  167.304948] R13: ffff888110f02aa0 R14: ffff88812d1d0205 R15: ffff88811277d4f0
<4>[  167.304950] FS:  0000000000000000(0000) GS:ffff88844f780000(0000) knlGS:0000000000000000
<4>[  167.304952] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[  167.304953] CR2: 00007fc362200c40 CR3: 000000013306e003 CR4: 0000000000770ef0
<4>[  167.304955] PKRU: 55555554
<4>[  167.304957] Call Trace:
<4>[  167.304958]  <TASK>
<4>[  167.305573]  ____intel_wakeref_put_last+0x1d/0x80 [i915]
<4>[  167.305685]  i915_request_retire.part.0+0x34f/0x600 [i915]
<4>[  167.305800]  retire_requests+0x51/0x80 [i915]
<4>[  167.305892]  intel_gt_retire_requests_timeout+0x27f/0x700 [i915]
<4>[  167.305985]  process_scheduled_works+0x2db/0x530
<4>[  167.305990]  worker_thread+0x18c/0x350
<4>[  167.305993]  kthread+0xfe/0x130
<4>[  167.305997]  ret_from_fork+0x2c/0x50
<4>[  167.306001]  ret_from_fork_asm+0x1b/0x30
<4>[  167.306004]  </TASK>

It is necessary for the queue_priority_hint to be lower than the next
request submission upon waking up, as we rely on the hint to decide when
to kick the tasklet to submit that first request.

Fixes: 22b7a426bbe1 ("drm/i915/execlists: Preempt-to-busy")
Closes: https://gitlab.freedesktop.org/drm/intel/issues/10154
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: <stable@vger.kernel.org> # v5.4+
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240318135906.716055-2-janusz.krzysztofik@linux.intel.com
(cherry picked from commit 98850e96cf811dc2d0a7d0af491caff9f5d49c1e)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
7 months agodrm/i915/vma: Fix UAF on destroy against retire race
Janusz Krzysztofik [Tue, 5 Mar 2024 14:35:06 +0000 (15:35 +0100)]
drm/i915/vma: Fix UAF on destroy against retire race

Object debugging tools were sporadically reporting illegal attempts to
free a still active i915 VMA object when parking a GT believed to be idle.

[161.359441] ODEBUG: free active (active state 0) object: ffff88811643b958 object type: i915_active hint: __i915_vma_active+0x0/0x50 [i915]
[161.360082] WARNING: CPU: 5 PID: 276 at lib/debugobjects.c:514 debug_print_object+0x80/0xb0
...
[161.360304] CPU: 5 PID: 276 Comm: kworker/5:2 Not tainted 6.5.0-rc1-CI_DRM_13375-g003f860e5577+ #1
[161.360314] Hardware name: Intel Corporation Rocket Lake Client Platform/RocketLake S UDIMM 6L RVP, BIOS RKLSFWI1.R00.3173.A03.2204210138 04/21/2022
[161.360322] Workqueue: i915-unordered __intel_wakeref_put_work [i915]
[161.360592] RIP: 0010:debug_print_object+0x80/0xb0
...
[161.361347] debug_object_free+0xeb/0x110
[161.361362] i915_active_fini+0x14/0x130 [i915]
[161.361866] release_references+0xfe/0x1f0 [i915]
[161.362543] i915_vma_parked+0x1db/0x380 [i915]
[161.363129] __gt_park+0x121/0x230 [i915]
[161.363515] ____intel_wakeref_put_last+0x1f/0x70 [i915]

That has been tracked down to be happening when another thread is
deactivating the VMA inside __active_retire() helper, after the VMA's
active counter has been already decremented to 0, but before deactivation
of the VMA's object is reported to the object debugging tool.

We could prevent from that race by serializing i915_active_fini() with
__active_retire() via ref->tree_lock, but that wouldn't stop the VMA from
being used, e.g. from __i915_vma_retire() called at the end of
__active_retire(), after that VMA has been already freed by a concurrent
i915_vma_destroy() on return from the i915_active_fini().  Then, we should
rather fix the issue at the VMA level, not in i915_active.

Since __i915_vma_parked() is called from __gt_park() on last put of the
GT's wakeref, the issue could be addressed by holding the GT wakeref long
enough for __active_retire() to complete before that wakeref is released
and the GT parked.

I believe the issue was introduced by commit d93939730347 ("drm/i915:
Remove the vma refcount") which moved a call to i915_active_fini() from
a dropped i915_vma_release(), called on last put of the removed VMA kref,
to i915_vma_parked() processing path called on last put of a GT wakeref.
However, its visibility to the object debugging tool was suppressed by a
bug in i915_active that was fixed two weeks later with commit e92eb246feb9
("drm/i915/active: Fix missing debug object activation").

A VMA associated with a request doesn't acquire a GT wakeref by itself.
Instead, it depends on a wakeref held directly by the request's active
intel_context for a GT associated with its VM, and indirectly on that
intel_context's engine wakeref if the engine belongs to the same GT as the
VMA's VM.  Those wakerefs are released asynchronously to VMA deactivation.

Fix the issue by getting a wakeref for the VMA's GT when activating it,
and putting that wakeref only after the VMA is deactivated.  However,
exclude global GTT from that processing path, otherwise the GPU never goes
idle.  Since __i915_vma_retire() may be called from atomic contexts, use
async variant of wakeref put.  Also, to avoid circular locking dependency,
take care of acquiring the wakeref before VM mutex when both are needed.

v7: Add inline comments with justifications for:
    - using untracked variants of intel_gt_pm_get/put() (Nirmoy),
    - using async variant of _put(),
    - not getting the wakeref in case of a global GTT,
    - always getting the first wakeref outside vm->mutex.
v6: Since __i915_vma_active/retire() callbacks are not serialized, storing
    a wakeref tracking handle inside struct i915_vma is not safe, and
    there is no other good place for that.  Use untracked variants of
    intel_gt_pm_get/put_async().
v5: Replace "tile" with "GT" across commit description (Rodrigo),
  - avoid mentioning multi-GT case in commit description (Rodrigo),
  - explain why we need to take a temporary wakeref unconditionally inside
    i915_vma_pin_ww() (Rodrigo).
v4: Refresh on top of commit 5e4e06e4087e ("drm/i915: Track gt pm
    wakerefs") (Andi),
  - for more easy backporting, split out removal of former insufficient
    workarounds and move them to separate patches (Nirmoy).
  - clean up commit message and description a bit.
v3: Identify root cause more precisely, and a commit to blame,
  - identify and drop former workarounds,
  - update commit message and description.
v2: Get the wakeref before VM mutex to avoid circular locking dependency,
  - drop questionable Fixes: tag.

Fixes: d93939730347 ("drm/i915: Remove the vma refcount")
Closes: https://gitlab.freedesktop.org/drm/intel/issues/8875
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Nirmoy Das <nirmoy.das@intel.com>
Cc: Andi Shyti <andi.shyti@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: stable@vger.kernel.org # v5.19+
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240305143747.335367-6-janusz.krzysztofik@linux.intel.com
(cherry picked from commit f3c71b2ded5c4367144a810ef25f998fd1d6c381)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
7 months agodrm/i915: Do not print 'pxp init failed with 0' when it succeed
José Roberto de Souza [Wed, 20 Mar 2024 21:05:47 +0000 (14:05 -0700)]
drm/i915: Do not print 'pxp init failed with 0' when it succeed

It is misleading, if the intention was to also print something
in case it succeed it should have a different string.

Cc: Alan Previn <alan.previn.teres.alexis@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Fixes: 698e19da2914 ("drm/i915: Skip pxp init if gt is wedged")
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240320210547.71937-1-jose.souza@intel.com
(cherry picked from commit d437099ab21cd4c6ce5d578b765df642d759c929)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
7 months agodrm/i915: Do not match JSL in ehl_combo_pll_div_frac_wa_needed()
Jonathon Hall [Wed, 13 Mar 2024 13:54:25 +0000 (09:54 -0400)]
drm/i915: Do not match JSL in ehl_combo_pll_div_frac_wa_needed()

Since commit 0c65dc062611 ("drm/i915/jsl: s/JSL/JASPERLAKE for
platform/subplatform defines"), boot freezes on a Jasper Lake tablet
(Librem 11), usually with graphical corruption on the eDP display,
but sometimes just a black screen.  This commit was included in 6.6 and
later.

That commit was intended to refactor EHL and JSL macros, but the change
to ehl_combo_pll_div_frac_wa_needed() started matching JSL incorrectly
when it was only intended to match EHL.

It replaced:
return ((IS_PLATFORM(i915, INTEL_ELKHARTLAKE) &&
 IS_JSL_EHL_DISPLAY_STEP(i915, STEP_B0, STEP_FOREVER)) ||
with:
return (((IS_ELKHARTLAKE(i915) || IS_JASPERLAKE(i915)) &&
 IS_DISPLAY_STEP(i915, STEP_B0, STEP_FOREVER)) ||

Remove IS_JASPERLAKE() to fix the regression.

Signed-off-by: Jonathon Hall <jonathon.hall@puri.sm>
Cc: stable@vger.kernel.org
Fixes: 0c65dc062611 ("drm/i915/jsl: s/JSL/JASPERLAKE for platform/subplatform defines")
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240313135424.3731410-1-jonathon.hall@puri.sm
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 1ef48859317b2a77672dea8682df133abf9c44ed)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
7 months agodrm/i915/hwmon: Fix locking inversion in sysfs getter
Janusz Krzysztofik [Mon, 11 Mar 2024 20:34:58 +0000 (21:34 +0100)]
drm/i915/hwmon: Fix locking inversion in sysfs getter

In i915 hwmon sysfs getter path we now take a hwmon_lock, then acquire an
rpm wakeref.  That results in lock inversion:

<4> [197.079335] ======================================================
<4> [197.085473] WARNING: possible circular locking dependency detected
<4> [197.091611] 6.8.0-rc7-Patchwork_129026v7-gc4dc92fb1152+ #1 Not tainted
<4> [197.098096] ------------------------------------------------------
<4> [197.104231] prometheus-node/839 is trying to acquire lock:
<4> [197.109680] ffffffff82764d80 (fs_reclaim){+.+.}-{0:0}, at: __kmalloc+0x9a/0x350
<4> [197.116939]
but task is already holding lock:
<4> [197.122730] ffff88811b772a40 (&hwmon->hwmon_lock){+.+.}-{3:3}, at: hwm_energy+0x4b/0x100 [i915]
<4> [197.131543]
which lock already depends on the new lock.
...
<4> [197.507922] Chain exists of:
  fs_reclaim --> &gt->reset.mutex --> &hwmon->hwmon_lock
<4> [197.518528]  Possible unsafe locking scenario:
<4> [197.524411]        CPU0                    CPU1
<4> [197.528916]        ----                    ----
<4> [197.533418]   lock(&hwmon->hwmon_lock);
<4> [197.537237]                                lock(&gt->reset.mutex);
<4> [197.543376]                                lock(&hwmon->hwmon_lock);
<4> [197.549682]   lock(fs_reclaim);
...
<4> [197.632548] Call Trace:
<4> [197.634990]  <TASK>
<4> [197.637088]  dump_stack_lvl+0x64/0xb0
<4> [197.640738]  check_noncircular+0x15e/0x180
<4> [197.652968]  check_prev_add+0xe9/0xce0
<4> [197.656705]  __lock_acquire+0x179f/0x2300
<4> [197.660694]  lock_acquire+0xd8/0x2d0
<4> [197.673009]  fs_reclaim_acquire+0xa1/0xd0
<4> [197.680478]  __kmalloc+0x9a/0x350
<4> [197.689063]  acpi_ns_internalize_name.part.0+0x4a/0xb0
<4> [197.694170]  acpi_ns_get_node_unlocked+0x60/0xf0
<4> [197.720608]  acpi_ns_get_node+0x3b/0x60
<4> [197.724428]  acpi_get_handle+0x57/0xb0
<4> [197.728164]  acpi_has_method+0x20/0x50
<4> [197.731896]  acpi_pci_set_power_state+0x43/0x120
<4> [197.736485]  pci_power_up+0x24/0x1c0
<4> [197.740047]  pci_pm_default_resume_early+0x9/0x30
<4> [197.744725]  pci_pm_runtime_resume+0x2d/0x90
<4> [197.753911]  __rpm_callback+0x3c/0x110
<4> [197.762586]  rpm_callback+0x58/0x70
<4> [197.766064]  rpm_resume+0x51e/0x730
<4> [197.769542]  rpm_resume+0x267/0x730
<4> [197.773020]  rpm_resume+0x267/0x730
<4> [197.776498]  rpm_resume+0x267/0x730
<4> [197.779974]  __pm_runtime_resume+0x49/0x90
<4> [197.784055]  __intel_runtime_pm_get+0x19/0xa0 [i915]
<4> [197.789070]  hwm_energy+0x55/0x100 [i915]
<4> [197.793183]  hwm_read+0x9a/0x310 [i915]
<4> [197.797124]  hwmon_attr_show+0x36/0x120
<4> [197.800946]  dev_attr_show+0x15/0x60
<4> [197.804509]  sysfs_kf_seq_show+0xb5/0x100

Acquire the wakeref before the lock and hold it as long as the lock is
also held.  Follow that pattern across the whole source file where similar
lock inversion can happen.

v2: Keep hardware read under the lock so the whole operation of updating
    energy from hardware is still atomic (Guenter),
  - instead, acquire the rpm wakeref before the lock and hold it as long
    as the lock is held,
  - use the same aproach for other similar places across the i915_hwmon.c
    source file (Rodrigo).

Fixes: 1b44019a93e2 ("drm/i915/guc: Disable PL1 power limit when loading GuC firmware")
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: <stable@vger.kernel.org> # v6.5+
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240311203500.518675-2-janusz.krzysztofik@linux.intel.com
(cherry picked from commit 71b218771426ea84c0e0148a2b7ac52c1f76e792)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
7 months agodrm/i915/dsb: Fix DSB vblank waits when using VRR
Ville Syrjälä [Wed, 6 Mar 2024 04:08:05 +0000 (06:08 +0200)]
drm/i915/dsb: Fix DSB vblank waits when using VRR

Looks like the undelayed vblank gets signalled exactly when
the active period ends. That is a problem for DSB+VRR when
we are already in vblank and expect DSB to start executing
as soon as we send the push. Instead of starting, the DSB
just keeps on waiting for the undelayed vblank which won't
signal until the end of the next frame's active period,
which is far too late.

The end result is that DSB won't have even started
executing by the time the flips/etc. have completed.
We then wait for an extra 1ms, after which we terminate
the DSB and report a timeout:
[drm] *ERROR* [CRTC:80:pipe A] DSB 0 timed out waiting for idle (current head=0xfedf4000, head=0x0, tail=0x1080)

To fix this let's configure DSB to use the so called VRR
"safe window" instead of the undelayed vblank to trigger
the DSB vblank logic, when VRR is enabled.

Cc: stable@vger.kernel.org
Fixes: 34d8311f4a1c ("drm/i915/dsb: Re-instate DSB for LUT updates")
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/9927
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240306040806.21697-3-ville.syrjala@linux.intel.com
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
(cherry picked from commit 41429d9b68367596eb3d6d5961e6295c284622a7)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
7 months agodrm/i915/vrr: Generate VRR "safe window" for DSB
Ville Syrjälä [Wed, 6 Mar 2024 04:08:04 +0000 (06:08 +0200)]
drm/i915/vrr: Generate VRR "safe window" for DSB

Looks like TRANS_CHICKEN bit 31 means something totally different
depending on the platform:
TGL: generate VRR "safe window" for DSB
ADL/DG2: make TRANS_SET_CONTEXT_LATENCY effective with VRR

So far we've only set this on ADL/DG2, but when using DSB+VRR
we also need to set it on TGL.

And a quick test on MTL says it doesn't need this bit for either
of those purposes, even though it's still documented as valid
in bspec.

Cc: stable@vger.kernel.org
Fixes: 34d8311f4a1c ("drm/i915/dsb: Re-instate DSB for LUT updates")
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/9927
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240306040806.21697-2-ville.syrjala@linux.intel.com
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
(cherry picked from commit 810e4519a1b34b5a0ff0eab32e5b184f533c5ee9)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
7 months agodrm/i915/display/debugfs: Fix duplicate checks in i915_drrs_status
Bhanuprakash Modem [Tue, 27 Feb 2024 12:38:33 +0000 (18:08 +0530)]
drm/i915/display/debugfs: Fix duplicate checks in i915_drrs_status

Remove duplicate checks for debugfs entry "DRRS capable:".

Fixes: 20af10845864 ("drm/i915/display/debugfs: New entry "DRRS capable" to i915_drrs_status")
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Cc: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240227123833.2799647-2-bhanuprakash.modem@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 3d81fceb60f20fe2ceed2198636ee6dc9ef46775)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
7 months agodrm/i915/drrs: Refactor CPU transcoder DRRS check
Bhanuprakash Modem [Wed, 28 Feb 2024 05:55:02 +0000 (11:25 +0530)]
drm/i915/drrs: Refactor CPU transcoder DRRS check

Rename cpu_transcoder_has_drrs() to intel_cpu_transcoder_has_drrs() and
move it to intel_drrs.[ch].

V2:
 - Move helpers to intel_drrs.[ch] (Jani)
 - Fix commit message (Jani)

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Cc: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240228055502.2857819-1-bhanuprakash.modem@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 2d04f8158548103c082190c8dbf6a19097e2423e)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
7 months agodrm/i915/mtl: Update workaround 14018575942
Tejas Upadhyay [Wed, 28 Feb 2024 10:37:38 +0000 (16:07 +0530)]
drm/i915/mtl: Update workaround 14018575942

Applying WA 14018575942 only on Compute engine has impact on
some apps like chrome. Updating this WA to apply on Render
engine as well as it is helping with performance on Chrome.

Note: There is no concern from media team thus not applying
WA on media engines. We will revisit if any issues reported
from media team.

V2(Matt):
 - Use correct WA number

Fixes: 668f37e1ee11 ("drm/i915/mtl: Update workaround 14018778641")
Signed-off-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240228103738.2018458-1-tejas.upadhyay@intel.com
(cherry picked from commit 71271280175aa0ed6673e40cce7c01296bcd05f6)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
7 months agodrm/i915/dsi: Go back to the previous INIT_OTP/DISPLAY_ON order, mostly
Ville Syrjälä [Tue, 5 Mar 2024 08:36:59 +0000 (10:36 +0200)]
drm/i915/dsi: Go back to the previous INIT_OTP/DISPLAY_ON order, mostly

Reinstate commit 88b065943cb5 ("drm/i915/dsi: Do display on
sequence later on icl+"), for the most part. Turns out some
machines (eg. Chuwi Minibook X) really do need that updated order.
It is also the order the Windows driver uses.

However we can't just undo the revert since that would again
break Lenovo 82TQ. After staring at the VBT sequences for both
machines I've concluded that the Lenovo 82TQ sequences look
somewhat broken:
 - INIT_OTP is not present at all
 - what should be in INIT_OTP is found in DISPLAY_ON
 - what should be in DISPLAY_ON is found in BACKLIGHT_ON
   (along with the actual backlight stuff)

The Chuwi Minibook X on the other hand has a full complement
of sequences in its VBT.

So let's try to deal with the broken sequences in the
Lenovo 82TQ VBT by simply swapping the (non-existent)
INIT_OTP sequence with the DISPLAY_ON sequence. Thus we
execute DISPLAY_ON when intending to execute INIT_OTP,
and execute nothing at all when intending to execute
DISPLAY_ON. That should be 100% equivalent to the
revert, for such broken VBTs.

Cc: stable@vger.kernel.org
Fixes: 6992eb815d08 ("Revert "drm/i915/dsi: Do display on sequence later on icl+"")
References: https://gitlab.freedesktop.org/drm/intel/-/issues/10071
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/10334
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240305083659.8396-1-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 94ae4612ea336bfc3c12b3fc68467c6711a4f39b)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
7 months agodrm/i915/display: Disable AuxCCS framebuffers if built for Xe
Juha-Pekka Heikkila [Wed, 28 Feb 2024 14:02:25 +0000 (16:02 +0200)]
drm/i915/display: Disable AuxCCS framebuffers if built for Xe

AuxCCS framebuffers don't work on Xe driver hence disable them
from plane capabilities until they are fixed. FlatCCS framebuffers
work and they are left enabled. CCS is left untouched for i915
driver.

Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/933
Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Tested-by: José Roberto de Souza <jose.souza@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Fixes: 44e694958b95 ("drm/xe/display: Implement display support")
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240228140225.858145-1-juhapekka.heikkila@gmail.com
(cherry picked from commit b7232a730fbf043f54fb46fbf4a6e92936770e79)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
7 months agodrm/i915: Stop doing double audio enable/disable on SDVO and g4x+ DP
Ville Syrjälä [Mon, 26 Feb 2024 19:32:50 +0000 (21:32 +0200)]
drm/i915: Stop doing double audio enable/disable on SDVO and g4x+ DP

Looks like I misplaced a few hunks when I moved the audio
enable/disable out from the encoder enable/disable hooks.
So we are now doing a double audio enable/disable on SDVO
and g4x+ DP. Probably harmless as doing it twice shouldn't
really change anything, but let's do it just once, as intended.

Fixes: cff742cc6851 ("drm/i915: Hoist the encoder->audio_{enable,disable}() calls higher up")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240226193251.29619-1-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 315bd0a0825776d6c66d474bf572db64fa019ad8)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
7 months agox86/efistub: Reinstate soft limit for initrd loading
Ard Biesheuvel [Thu, 28 Mar 2024 14:49:48 +0000 (15:49 +0100)]
x86/efistub: Reinstate soft limit for initrd loading

Commit

  8117961d98fb2 ("x86/efi: Disregard setup header of loaded image")

dropped the memcopy of the image's setup header into the boot_params
struct provided to the core kernel, on the basis that EFI boot does not
need it and should rely only on a single protocol to interface with the
boot chain. It is also a prerequisite for being able to increase the
section alignment to 4k, which is needed to enable memory protections
when running in the boot services.

So only the setup_header fields that matter to the core kernel are
populated explicitly, and everything else is ignored. One thing was
overlooked, though: the initrd_addr_max field in the setup_header is not
used by the core kernel, but it is used by the EFI stub itself when it
loads the initrd, where its default value of INT_MAX is used as the soft
limit for memory allocation.

This means that, in the old situation, the initrd was virtually always
loaded in the lower 2G of memory, but now, due to initrd_addr_max being
0x0, the initrd may end up anywhere in memory. This should not be an
issue principle, as most systems can deal with this fine. However, it
does appear to tickle some problems in older UEFI implementations, where
the memory ends up being corrupted, resulting in errors when unpacking
the initramfs.

So set the initrd_addr_max field to INT_MAX like it was before.

Fixes: 8117961d98fb2 ("x86/efi: Disregard setup header of loaded image")
Reported-by: Radek Podgorny <radek@podgorny.cz>
Closes: https://lore.kernel.org/all/a99a831a-8ad5-4cb0-bff9-be637311f771@podgorny.cz
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
7 months agoefi/libstub: Cast away type warning in use of max()
Ard Biesheuvel [Tue, 26 Mar 2024 10:15:25 +0000 (11:15 +0100)]
efi/libstub: Cast away type warning in use of max()

Avoid a type mismatch warning in max() by switching to max_t() and
providing the type explicitly.

Fixes: 3cb4a4827596abc82e ("efi/libstub: fix efi_random_alloc() ...")
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
7 months agodrm/i915: Add includes for BUG_ON/BUILD_BUG_ON in i915_memcpy.c
Joonas Lahtinen [Fri, 8 Mar 2024 14:46:43 +0000 (16:46 +0200)]
drm/i915: Add includes for BUG_ON/BUILD_BUG_ON in i915_memcpy.c

Add standalone includes for BUG_ON and BUILD_BUG_ON to avoid build failure
after linux-next include refactoring.

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Chris Wilson <chris.p.wilson@linux.intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Tvrtko Ursulin <tursulin@ursulin.net>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240308144643.137831-1-joonas.lahtinen@linux.intel.com
(cherry picked from commit 4df6ac223cad36e7384ed00fe6efc114279f0df6)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
7 months agoinet: inet_defrag: prevent sk release while still in use
Florian Westphal [Tue, 26 Mar 2024 10:18:41 +0000 (11:18 +0100)]
inet: inet_defrag: prevent sk release while still in use

ip_local_out() and other functions can pass skb->sk as function argument.

If the skb is a fragment and reassembly happens before such function call
returns, the sk must not be released.

This affects skb fragments reassembled via netfilter or similar
modules, e.g. openvswitch or ct_act.c, when run as part of tx pipeline.

Eric Dumazet made an initial analysis of this bug.  Quoting Eric:
  Calling ip_defrag() in output path is also implying skb_orphan(),
  which is buggy because output path relies on sk not disappearing.

  A relevant old patch about the issue was :
  8282f27449bf ("inet: frag: Always orphan skbs inside ip_defrag()")

  [..]

  net/ipv4/ip_output.c depends on skb->sk being set, and probably to an
  inet socket, not an arbitrary one.

  If we orphan the packet in ipvlan, then downstream things like FQ
  packet scheduler will not work properly.

  We need to change ip_defrag() to only use skb_orphan() when really
  needed, ie whenever frag_list is going to be used.

Eric suggested to stash sk in fragment queue and made an initial patch.
However there is a problem with this:

If skb is refragmented again right after, ip_do_fragment() will copy
head->sk to the new fragments, and sets up destructor to sock_wfree.
IOW, we have no choice but to fix up sk_wmem accouting to reflect the
fully reassembled skb, else wmem will underflow.

This change moves the orphan down into the core, to last possible moment.
As ip_defrag_offset is aliased with sk_buff->sk member, we must move the
offset into the FRAG_CB, else skb->sk gets clobbered.

This allows to delay the orphaning long enough to learn if the skb has
to be queued or if the skb is completing the reasm queue.

In the former case, things work as before, skb is orphaned.  This is
safe because skb gets queued/stolen and won't continue past reasm engine.

In the latter case, we will steal the skb->sk reference, reattach it to
the head skb, and fix up wmem accouting when inet_frag inflates truesize.

Fixes: 7026b1ddb6b8 ("netfilter: Pass socket pointer down through okfn().")
Diagnosed-by: Eric Dumazet <edumazet@google.com>
Reported-by: xingwei lee <xrivendell7@gmail.com>
Reported-by: yue sun <samsun1006219@gmail.com>
Reported-by: syzbot+e5167d7144a62715044c@syzkaller.appspotmail.com
Signed-off-by: Florian Westphal <fw@strlen.de>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20240326101845.30836-1-fw@strlen.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
7 months agoOcteontx2-af: fix pause frame configuration in GMP mode
Hariprasad Kelam [Tue, 26 Mar 2024 05:27:20 +0000 (10:57 +0530)]
Octeontx2-af: fix pause frame configuration in GMP mode

The Octeontx2 MAC block (CGX) has separate data paths (SMU and GMP) for
different speeds, allowing for efficient data transfer.

The previous patch which added pause frame configuration has a bug due
to which pause frame feature is not working in GMP mode.

This patch fixes the issue by configurating appropriate registers.

Fixes: f7e086e754fe ("octeontx2-af: Pause frame configuration at cgx")
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240326052720.4441-1-hkelam@marvell.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
7 months agonet: lan743x: Add set RFE read fifo threshold for PCI1x1x chips
Raju Lakkaraju [Tue, 26 Mar 2024 06:58:05 +0000 (12:28 +0530)]
net: lan743x: Add set RFE read fifo threshold for PCI1x1x chips

PCI11x1x Rev B0 devices might drop packets when receiving back to back frames
at 2.5G link speed. Change the B0 Rev device's Receive filtering Engine FIFO
threshold parameter from its hardware default of 4 to 3 dwords to prevent the
problem. Rev C0 and later hardware already defaults to 3 dwords.

Fixes: bb4f6bffe33c ("net: lan743x: Add PCI11010 / PCI11414 device IDs")
Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microchip.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240326065805.686128-1-Raju.Lakkaraju@microchip.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
7 months agodrm/qxl: remove unused variable from `qxl_process_single_command()`
Miguel Ojeda [Wed, 27 Mar 2024 17:55:56 +0000 (18:55 +0100)]
drm/qxl: remove unused variable from `qxl_process_single_command()`

Clang 14 in an (essentially) defconfig loongarch64 build for next-20240327
reports [1]:

     drivers/gpu/drm/qxl/qxl_ioctl.c:148:14: error: variable 'num_relocs'
     set but not used [-Werror,-Wunused-but-set-variable]

The variable was originally used in the `out_free_bos` label, but commit
74d9a6335dce ("drm/qxl: Simplify cleaning qxl processing command")
removed the use that happened in that label.

Thus remove the unused variable.

Fixes: 74d9a6335dce ("drm/qxl: Simplify cleaning qxl processing command")
Closes: https://lore.kernel.org/lkml/CANiq72kqqQfUxLkHJYqeBAhpc6YcX7bfR96gmmbF=j8hEOykqw@mail.gmail.com/ [1]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://lore.kernel.org/r/20240327175556.233126-2-ojeda@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>