Chao Yu [Fri, 14 Feb 2020 09:44:13 +0000 (17:44 +0800)]
f2fs: clean up bggc mount option
There are three status for background gc: on, off and sync, it's
a little bit confused to use test_opt(BG_GC) and test_opt(FORCE_FG_GC)
combinations to indicate status of background gc.
So let's remove F2FS_MOUNT_BG_GC and F2FS_MOUNT_FORCE_FG_GC mount
options, and add F2FS_OPTION().bggc_mode with below three status
to clean up codes and enhance bggc mode's scalability.
enum {
BGGC_MODE_ON, /* background gc is on */
BGGC_MODE_OFF, /* background gc is off */
BGGC_MODE_SYNC, /*
* background gc is on, migrating blocks
* like foreground gc
*/
};
Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Fri, 14 Feb 2020 09:44:12 +0000 (17:44 +0800)]
f2fs: clean up lfs/adaptive mount option
This patch removes F2FS_MOUNT_ADAPTIVE and F2FS_MOUNT_LFS mount options,
and add F2FS_OPTION.fs_mode with below two status to indicate filesystem
mode.
enum {
FS_MODE_ADAPTIVE, /* use both lfs/ssr allocation */
FS_MODE_LFS, /* use lfs allocation only */
};
It can enhance code readability and fs mode's scalability.
Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Takashi Iwai [Wed, 11 Mar 2020 09:33:53 +0000 (10:33 +0100)]
f2fs: Use scnprintf() for avoiding potential buffer overflow
Since snprintf() returns the would-be-output size instead of the
actual output size, the succeeding calls may go beyond the given
buffer limit. Fix it by replacing with scnprintf().
Chao Yu [Tue, 10 Mar 2020 12:50:08 +0000 (20:50 +0800)]
f2fs: fix to check dirty pages during compressed inode conversion
Compressed cluster can be generated during dirty data writeback,
if there is dirty pages on compressed inode, it needs to disable
converting compressed inode to non-compressed one.
Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Tue, 10 Mar 2020 12:50:07 +0000 (20:50 +0800)]
f2fs: fix to account compressed inode correctly
stat_inc_compr_inode() needs to check FI_COMPRESSED_FILE flag, so
in f2fs_disable_compressed_file(), we should call stat_dec_compr_inode()
before clearing FI_COMPRESSED_FILE flag.
Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Mon, 2 Mar 2020 09:34:27 +0000 (17:34 +0800)]
f2fs: fix to avoid using uninitialized variable
In f2fs_vm_page_mkwrite(), if inode is compress one, and current mmapped
page locates in compressed cluster, we have to call f2fs_get_dnode_of_data()
to get its physical block address before f2fs_wait_on_block_writeback().
Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Thu, 27 Feb 2020 11:30:04 +0000 (19:30 +0800)]
f2fs: remove i_sem lock coverage in f2fs_setxattr()
f2fs_inode.xattr_ver field was gone after commit d260081ccf37
("f2fs: change recovery policy of xattr node block"), remove i_sem
lock coverage in f2fs_setxattr()
Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Thu, 27 Feb 2020 11:30:03 +0000 (19:30 +0800)]
f2fs: cover last_disk_size update with spinlock
This change solves below hangtask issue:
INFO: task kworker/u16:1:58 blocked for more than 122 seconds.
Not tainted 5.6.0-rc2-00590-g9983bdae4974e #11
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u16:1 D 0 58 2 0x00000000
Workqueue: writeback wb_workfn (flush-179:0)
Backtrace:
(__schedule) from [<c0913234>] (schedule+0x78/0xf4)
(schedule) from [<c017ec74>] (rwsem_down_write_slowpath+0x24c/0x4c0)
(rwsem_down_write_slowpath) from [<c0915f2c>] (down_write+0x6c/0x70)
(down_write) from [<c0435b80>] (f2fs_write_single_data_page+0x608/0x7ac)
(f2fs_write_single_data_page) from [<c0435fd8>] (f2fs_write_cache_pages+0x2b4/0x7c4)
(f2fs_write_cache_pages) from [<c043682c>] (f2fs_write_data_pages+0x344/0x35c)
(f2fs_write_data_pages) from [<c0267ee8>] (do_writepages+0x3c/0xd4)
(do_writepages) from [<c0310cbc>] (__writeback_single_inode+0x44/0x454)
(__writeback_single_inode) from [<c03112d0>] (writeback_sb_inodes+0x204/0x4b0)
(writeback_sb_inodes) from [<c03115cc>] (__writeback_inodes_wb+0x50/0xe4)
(__writeback_inodes_wb) from [<c03118f4>] (wb_writeback+0x294/0x338)
(wb_writeback) from [<c0312dac>] (wb_workfn+0x35c/0x54c)
(wb_workfn) from [<c014f2b8>] (process_one_work+0x214/0x544)
(process_one_work) from [<c014f634>] (worker_thread+0x4c/0x574)
(worker_thread) from [<c01564fc>] (kthread+0x144/0x170)
(kthread) from [<c01010e8>] (ret_from_fork+0x14/0x2c)
Chao Yu [Mon, 24 Feb 2020 11:20:17 +0000 (19:20 +0800)]
f2fs: fix to avoid NULL pointer dereference
Unable to handle kernel NULL pointer dereference at virtual address 00000000
PC is at f2fs_free_dic+0x60/0x2c8
LR is at f2fs_decompress_pages+0x3c4/0x3e8
f2fs_free_dic+0x60/0x2c8
f2fs_decompress_pages+0x3c4/0x3e8
__read_end_io+0x78/0x19c
f2fs_post_read_work+0x6c/0x94
process_one_work+0x210/0x48c
worker_thread+0x2e8/0x44c
kthread+0x110/0x120
ret_from_fork+0x10/0x18
In f2fs_free_dic(), we can not use f2fs_put_page(,1) to release dic->tpages[i],
as the page's mapping is NULL.
Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Eric Biggers [Fri, 21 Feb 2020 04:50:37 +0000 (20:50 -0800)]
f2fs: fix leaking uninitialized memory in compressed clusters
When the compressed data of a cluster doesn't end on a page boundary,
the remainder of the last page must be zeroed in order to avoid leaking
uninitialized memory to disk.
Fixes: 4c8ff7095bef ("f2fs: support data compression") Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Sahitya Tummala [Tue, 18 Feb 2020 03:49:07 +0000 (09:19 +0530)]
f2fs: fix the panic in do_checkpoint()
There could be a scenario where f2fs_sync_meta_pages() will not
ensure that all F2FS_DIRTY_META pages are submitted for IO. Thus,
resulting in the below panic in do_checkpoint() -
This can happen in a low-memory condition, where shrinker could
also be doing the writepage operation (stack shown below)
at the same time when checkpoint is running on another core.
schedule
down_write
f2fs_submit_page_write -> by this time, this page in page cache is tagged
as PAGECACHE_TAG_WRITEBACK and PAGECACHE_TAG_DIRTY
is cleared, due to which f2fs_sync_meta_pages()
cannot sync this page in do_checkpoint() path.
f2fs_do_write_meta_page
__f2fs_write_meta_page
f2fs_write_meta_page
shrink_page_list
shrink_inactive_list
shrink_node_memcg
shrink_node
kswapd
Chao Yu [Fri, 14 Feb 2020 09:45:12 +0000 (17:45 +0800)]
f2fs: fix to wait all node page writeback
There is a race condition that we may miss to wait for all node pages
writeback, fix it.
- fsync() - shrink
- f2fs_do_sync_file
- __write_node_page
- set_page_writeback(page#0)
: remove DIRTY/TOWRITE flag
- f2fs_fsync_node_pages
: won't find page #0 as TOWRITE flag was removeD
- f2fs_wait_on_node_pages_writeback
: wont' wait page #0 writeback as it was not in fsync_node_list list.
- f2fs_add_fsync_node_entry
Fixes: 50fa53eccf9f ("f2fs: fix to avoid broken of dnode block list") Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Linus Torvalds [Thu, 13 Feb 2020 22:36:57 +0000 (14:36 -0800)]
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"Summary below, but it's all reasonably straightforward. There are some
more fixes on the horizon, but nothing disastrous yet.
Summary:
- Fix build when KASLR is enabled but CONFIG_ARCH_RANDOM is not set
- Fix context-switching of SSBS state on systems that implement it
- Fix spinlock compiler warning introduced during the merge window
- Use SYSCTL_{ZERO,ONE} instead of rolling our own static variables
- Don't scream if optional SMMUv3 PMU irq is missing
- Remove some unused function prototypes"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: time: Replace <linux/clk-provider.h> by <linux/of_clk.h>
arm64: Fix CONFIG_ARCH_RANDOM=n build
perf/smmuv3: Use platform_get_irq_optional() for wired interrupt
arm64/spinlock: fix a -Wunused-function warning
arm64: ssbs: Fix context-switch when SSBS is present on all CPUs
arm64: use shared sysctl constants
arm64: Drop do_el0_ia_bp_hardening() & do_sp_pc_abort() declarations
Linus Torvalds [Thu, 13 Feb 2020 22:34:58 +0000 (14:34 -0800)]
Merge tag 'gpio-v5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
- Revert two patches to gpio_do_set_config() and implement the proper
solution that works, also drop an unecessary call in set_config()
- Fix up the lockdep class for hierarchical IRQ domains.
- Remove some bridge code for line directions.
- Fix a register access bug in the Xilinx driver.
* tag 'gpio-v5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: sifive: fix static checker warning
spmi: pmic-arb: Set lockdep class for hierarchical irq domains
gpio: xilinx: Fix bug where the wrong GPIO register is written to
gpiolib: remove unnecessary argument from set_config call
gpio: bd71828: Remove unneeded defines for GPIO_LINE_DIRECTION_IN/OUT
MAINTAINERS: Sort entries in database for GPIO
gpiolib: fix gpio_do_set_config()
Revert "gpiolib: remove set but not used variable 'config'"
Revert "gpiolib: Remove duplicated function gpio_do_set_config()"
Randy Dunlap [Mon, 10 Feb 2020 03:36:14 +0000 (19:36 -0800)]
linux/pipe_fs_i.h: fix kernel-doc warnings after @wait was split
Fix kernel-doc warnings in struct pipe_inode_info after @wait was
split into @rd_wait and @wr_wait.
include/linux/pipe_fs_i.h:66: warning: Function parameter or member 'rd_wait' not described in 'pipe_inode_info'
include/linux/pipe_fs_i.h:66: warning: Function parameter or member 'wr_wait' not described in 'pipe_inode_info'
Fixes: 0ddad21d3e99 ("pipe: use exclusive waits when reading or writing") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Wed, 12 Feb 2020 18:28:42 +0000 (10:28 -0800)]
Merge tag 'kbuild-fixes-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- fix memory corruption in scripts/kallsyms
- fix the vmlinux link stage to correctly update compile.h
* tag 'kbuild-fixes-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: fix mismatch between .version and include/generated/compile.h
scripts/kallsyms: fix memory corruption caused by write over-run
Linus Torvalds [Wed, 12 Feb 2020 00:52:08 +0000 (16:52 -0800)]
Merge tag 'dax-fixes-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull dax fixes from Dan Williams:
"A fix for an xfstest failure and some and an update that removes an
fsdax dependency on block devices.
Summary:
- Fix RWF_NOWAIT writes to properly return -EAGAIN
- Clean up an unused helper
- Update dax_writeback_mapping_range to not need a block_device
argument"
* tag 'dax-fixes-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
dax: pass NOWAIT flag to iomap_apply
dax: Get rid of fs_dax_get_by_host() helper
dax: Pass dax_dev instead of bdev to dax_writeback_mapping_range()
Robin Murphy [Mon, 10 Feb 2020 19:21:01 +0000 (19:21 +0000)]
arm64: Fix CONFIG_ARCH_RANDOM=n build
The entire asm/archrandom.h header is generically included via
linux/archrandom.h only when CONFIG_ARCH_RANDOM is already set, so the
stub definitions of __arm64_rndr() and __early_cpu_has_rndr() are only
visible to KASLR if it explicitly includes the arch-internal header.
Acked-by: Mark Brown <broonie@kernel.org> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Will Deacon <will@kernel.org>
Tom Zanussi [Mon, 10 Feb 2020 23:06:50 +0000 (17:06 -0600)]
tracing: Consolidate trace() functions
Move the checking, buffer reserve and buffer commit code in
synth_event_trace_start/end() into inline functions
__synth_event_trace_start/end() so they can also be used by
synth_event_trace() and synth_event_trace_array(), and then have all
those functions use them.
Also, change synth_event_trace_state.enabled to disabled so it only
needs to be set if the event is disabled, which is not normally the
case.
Tom Zanussi [Mon, 10 Feb 2020 23:06:49 +0000 (17:06 -0600)]
tracing: Don't return -EINVAL when tracing soft disabled synth events
There's no reason to return -EINVAL when tracing a synthetic event if
it's soft disabled - treat it the same as if it were hard disabled and
return normally.
Have synth_event_trace() and synth_event_trace_array() just return
normally, and have synth_event_trace_start set the trace state to
disabled and return.
Tom Zanussi [Mon, 10 Feb 2020 23:06:48 +0000 (17:06 -0600)]
tracing: Add missing nest end to synth_event_trace_start() error case
If the ring_buffer reserve in synth_event_trace_start() fails, the
matching ring_buffer_nest_end() should be called in the error code,
since nothing else will ever call it in this case.
Linus Torvalds [Tue, 11 Feb 2020 01:07:05 +0000 (17:07 -0800)]
Merge branch 'for-5.6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup fix from Tejun Heo:
"I made a mistake while removing cgroup task list lazy init
optimization making the root cgroup.procs show entries for the
init_tasks. The zero entries doesn't cause critical failures but does
make systemd print out warning messages during boot.
Fix it by omitting init_tasks as they should be"
* 'for-5.6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup: init_tasks shouldn't be linked to the root cgroup
Linus Torvalds [Tue, 11 Feb 2020 00:51:35 +0000 (16:51 -0800)]
Merge tag 'selinux-pr-20200210' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull SELinux fixes from Paul Moore:
"Two small fixes: one fixes a locking problem in the recently merged
label translation code, the other fixes an embarrassing 'binderfs' /
'binder' filesystem name check"
* tag 'selinux-pr-20200210' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: fix sidtab string cache locking
selinux: fix typo in filesystem name
Suppress non-error messages when applying new bootconfig
to initrd image. To enable it, replace printf for error
message with pr_err() macro.
This also adds a testcase for this fix.
Masahiro Yamada [Mon, 10 Feb 2020 20:06:34 +0000 (05:06 +0900)]
kbuild: fix mismatch between .version and include/generated/compile.h
Since commit 56d589361572 ("kbuild: do not create orphan built-in.a or
obj-y objects"), scripts/link-vmlinux.sh does nothing when descending
into init/.
Once the version number becomes out of sync between .version and
include/generated/compile.h, it is not self-healing.
[How to reproduce]
$ echo 100 > .version
$ make
You will see the number in the .version is always bigger than that in
compile.h by one. After this, every time you run 'make', the vmlinux is
re-linked even when none of source files is updated.
Fixes: 56d589361572 ("kbuild: do not create orphan built-in.a or obj-y objects") Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
John Garry [Mon, 10 Feb 2020 16:50:17 +0000 (00:50 +0800)]
perf/smmuv3: Use platform_get_irq_optional() for wired interrupt
Even though a SMMUv3 PMCG implementation may use an MSI as the form of
interrupt source, the kernel would still complain that it does not find
the wired (GSIV) interrupt in this case:
root@(none)$ dmesg | grep arm-smmu-v3-pmcg | grep "not found"
[ 59.237219] arm-smmu-v3-pmcg arm-smmu-v3-pmcg.8.auto: IRQ index 0 not found
[ 59.322841] arm-smmu-v3-pmcg arm-smmu-v3-pmcg.9.auto: IRQ index 0 not found
[ 59.422155] arm-smmu-v3-pmcg arm-smmu-v3-pmcg.10.auto: IRQ index 0 not found
[ 59.539014] arm-smmu-v3-pmcg arm-smmu-v3-pmcg.11.auto: IRQ index 0 not found
[ 59.640329] arm-smmu-v3-pmcg arm-smmu-v3-pmcg.12.auto: IRQ index 0 not found
[ 59.743112] arm-smmu-v3-pmcg arm-smmu-v3-pmcg.13.auto: IRQ index 0 not found
[ 59.880577] arm-smmu-v3-pmcg arm-smmu-v3-pmcg.14.auto: IRQ index 0 not found
[ 60.017528] arm-smmu-v3-pmcg arm-smmu-v3-pmcg.15.auto: IRQ index 0 not found
Use platform_get_irq_optional() to silence the warning.
If neither interrupt source is found, then the driver will still warn that
IRQ setup errored and the probe will fail.
Reviewed-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Will Deacon <will@kernel.org>
bootconfig: Use parse_args() to find bootconfig and '--'
The current implementation does a naive search of "bootconfig" on the kernel
command line. But this could find "bootconfig" that is part of another
option in quotes (although highly unlikely). But it also needs to find '--'
on the kernel command line to know if it should append a '--' or not when a
bootconfig in the initrd file has an "init" section. The check uses the
naive strstr() to find to see if it exists. But this can return a false
positive if it exists in an option and then the "init" section in the initrd
will not be appended properly.
Using parse_args() to find both of these will solve both of these problems.
Link: https://lore.kernel.org/r/202002070954.C18E7F58B@keescook Fixes: 7495e0926fdf3 ("bootconfig: Only load bootconfig if "bootconfig" is on the kernel cmdline") Fixes: 1319916209ce8 ("bootconfig: init: Allow admin to use bootconfig for init command line") Reported-by: Kees Cook <keescook@chromium.org> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Since there is no user except CONFIG_BOOT_CONFIG and no plan
to use it from other functions, CONFIG_LIBXBC can be removed
and we can use CONFIG_BOOT_CONFIG directly.
Since printk() wrapper macro uses __VA_ARGS__ without "##" prefix, it causes
a build error if there is no variable arguments (e.g. only fmt is
specified.) To fix this error, use ##__VA_ARGS__ instead of __VAR_ARGS__.
Link: http://lkml.kernel.org/r/158108370130.2758.10893830923800978011.stgit@devnote2 Fixes: 950313ebf79c ("tools: bootconfig: Add bootconfig command") Reported-by: Michael Ellerman <mpe@ellerman.id.au> Tested-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Stephen Boyd [Tue, 21 Jan 2020 18:37:48 +0000 (10:37 -0800)]
spmi: pmic-arb: Set lockdep class for hierarchical irq domains
I see the following lockdep splat in the qcom pinctrl driver when
attempting to suspend the device.
WARNING: possible recursive locking detected
5.4.11 #3 Tainted: G W
--------------------------------------------
cat/3074 is trying to acquire lock: ffffff81f49804c0 (&irq_desc_lock_class){-.-.}, at: __irq_get_desc_lock+0x64/0x94
but task is already holding lock: ffffff81f1cc10c0 (&irq_desc_lock_class){-.-.}, at: __irq_get_desc_lock+0x64/0x94
other info that might help us debug this:
Possible unsafe locking scenario:
Paul Thomas [Sat, 25 Jan 2020 22:14:10 +0000 (17:14 -0500)]
gpio: xilinx: Fix bug where the wrong GPIO register is written to
Care is taken with "index", however with the current version
the actual xgpio_writereg is using index for data but
xgpio_regoffset(chip, i) for the offset. And since i is already
incremented it is incorrect. This patch fixes it so that index
is used for the offset too.
Linus Walleij [Mon, 10 Feb 2020 11:47:26 +0000 (12:47 +0100)]
Merge tag 'gpio-fixes-for-v5.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into fixes
gpio fixes for v5.6-rc2
- fix a regression introduced by gpio_do_set_config()
- sort GPIO entries in MAINTAINERS
- remove leftover defines in gpio-bd71828
- remove an redundant switch case in gpio_set_config()
Qian Cai [Thu, 23 Jan 2020 20:20:51 +0000 (15:20 -0500)]
arm64/spinlock: fix a -Wunused-function warning
The commit f5bfdc8e3947 ("locking/osq: Use optimized spinning loop for
arm64") introduced a warning from Clang because vcpu_is_preempted() is
compiled away,
kernel/locking/osq_lock.c:25:19: warning: unused function 'node_cpu'
[-Wunused-function]
static inline int node_cpu(struct optimistic_spin_node *node)
^
1 warning generated.
Fix it by converting vcpu_is_preempted() to a static inline function.
Fixes: f5bfdc8e3947 ("locking/osq: Use optimized spinning loop for arm64") Acked-by: Waiman Long <longman@redhat.com> Signed-off-by: Qian Cai <cai@lca.pw> Signed-off-by: Will Deacon <will@kernel.org>
Will Deacon [Thu, 6 Feb 2020 10:42:58 +0000 (10:42 +0000)]
arm64: ssbs: Fix context-switch when SSBS is present on all CPUs
When all CPUs in the system implement the SSBS extension, the SSBS field
in PSTATE is the definitive indication of the mitigation state. Further,
when the CPUs implement the SSBS manipulation instructions (advertised
to userspace via an HWCAP), EL0 can toggle the SSBS field directly and
so we cannot rely on any shadow state such as TIF_SSBD at all.
Avoid forcing the SSBS field in context-switch on such a system, and
simply rely on the PSTATE register instead.
Cc: <stable@vger.kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Srinivas Ramana <sramana@codeaurora.org> Fixes: cbdf8a189a66 ("arm64: Force SSBS on context switch") Reviewed-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Will Deacon <will@kernel.org>
Matteo Croce [Fri, 24 Jan 2020 15:51:27 +0000 (16:51 +0100)]
arm64: use shared sysctl constants
Use shared sysctl variables for zero and one constants, as in
commit eec4844fae7c ("proc/sysctl: add shared variables for range check")
Fixes: 63f0c6037965 ("arm64: Introduce prctl() options to control the tagged user addresses ABI") Signed-off-by: Matteo Croce <mcroce@redhat.com> Signed-off-by: Will Deacon <will@kernel.org>
arm64: Drop do_el0_ia_bp_hardening() & do_sp_pc_abort() declarations
There is a redundant do_sp_pc_abort() declaration in exceptions.h which can
be removed. Also do_el0_ia_bp_hardening() as been already been dropped with
the commit bfe298745afc ("arm64: entry-common: don't touch daif before
bp-hardening") and hence does not need a declaration any more. This should
not introduce any functional change.
Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: James Morse <james.morse@arm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: Will Deacon <will@kernel.org>
Kent Gibson [Mon, 20 Jan 2020 10:46:26 +0000 (18:46 +0800)]
gpiolib: remove unnecessary argument from set_config call
Remove unnecessary argument when setting PIN_CONFIG_BIAS_DISABLE. No
argument is expected by pinctrl, so removing it should be harmless.
Fixes: 2148ad7790ea ("gpiolib: add support for disabling line bias") Signed-off-by: Kent Gibson <warthog618@gmail.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Commit d90f36851d65 ("gpiolib: have a single place of calling
set_config()") introduced a regression where we don't pass the right
variable as argument to the set_config() callback of gpio driver from
gpio_set_config(). After reverting two additional patches that came
on top of it - this addresses the issue by changing the type of the last
argument of gpio_do_set_config() to unsigned long and making sure the
packed config variable is actually used in gpio_set_config().
Fixes: d90f36851d65 ("gpiolib: have a single place of calling set_config()") Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Tested-by: Guenter Roeck <linux@roeck-us.net>
Linus Torvalds [Mon, 10 Feb 2020 00:05:50 +0000 (16:05 -0800)]
Merge tag 'kbuild-v5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull more Kbuild updates from Masahiro Yamada:
- fix randconfig to generate a sane .config
- rename hostprogs-y / always to hostprogs / always-y, which are more
natual syntax.
- optimize scripts/kallsyms
- fix yes2modconfig and mod2yesconfig
- make multiple directory targets ('make foo/ bar/') work
* tag 'kbuild-v5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: make multiple directory targets work
kconfig: Invalidate all symbols after changing to y or m.
kallsyms: fix type of kallsyms_token_table[]
scripts/kallsyms: change table to store (strcut sym_entry *)
scripts/kallsyms: rename local variables in read_symbol()
kbuild: rename hostprogs-y/always to hostprogs/always-y
kbuild: fix the document to use extra-y for vmlinux.lds
kconfig: fix broken dependency in randconfig-generated .config
Linus Torvalds [Sun, 9 Feb 2020 23:51:46 +0000 (15:51 -0800)]
Merge tag 'zonefs-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs
Pull new zonefs file system from Damien Le Moal:
"Zonefs is a very simple file system exposing each zone of a zoned
block device as a file.
Unlike a regular file system with native zoned block device support
(e.g. f2fs or the on-going btrfs effort), zonefs does not hide the
sequential write constraint of zoned block devices to the user. As a
result, zonefs is not a POSIX compliant file system. Its goal is to
simplify the implementation of zoned block devices support in
applications by replacing raw block device file accesses with a richer
file based API, avoiding relying on direct block device file ioctls
which may be more obscure to developers.
One example of this approach is the implementation of LSM
(log-structured merge) tree structures (such as used in RocksDB and
LevelDB) on zoned block devices by allowing SSTables to be stored in a
zone file similarly to a regular file system rather than as a range of
sectors of a zoned device. The introduction of the higher level
construct "one file is one zone" can help reducing the amount of
changes needed in the application while at the same time allowing the
use of zoned block devices with various programming languages other
than C.
Zonefs IO management implementation uses the new iomap generic code.
Zonefs has been successfully tested using a functional test suite
(available with zonefs userland format tool on github) and a prototype
implementation of LevelDB on top of zonefs"
* tag 'zonefs-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs:
zonefs: Add documentation
fs: New zonefs file system
Linus Torvalds [Sun, 9 Feb 2020 21:27:17 +0000 (13:27 -0800)]
Merge tag '5.6-rc-smb3-plugfest-patches' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"13 cifs/smb3 patches, most from testing at the SMB3 plugfest this week:
- Important fix for multichannel and for modefromsid mounts.
- Two reconnect fixes
- Addition of SMB3 change notify support
- Backup tools fix
- A few additional minor debug improvements (tracepoints and
additional logging found useful during testing this week)"
* tag '5.6-rc-smb3-plugfest-patches' of git://git.samba.org/sfrench/cifs-2.6:
smb3: Add defines for new information level, FileIdInformation
smb3: print warning once if posix context returned on open
smb3: add one more dynamic tracepoint missing from strict fsync path
cifs: fix mode bits from dir listing when mounted with modefromsid
cifs: fix channel signing
cifs: add SMB3 change notification support
cifs: make multichannel warning more visible
cifs: fix soft mounts hanging in the reconnect code
cifs: Add tracepoints for errors on flush or fsync
cifs: log warning message (once) if out of disk space
cifs: fail i/o on soft mounts if sessionsetup errors out
smb3: fix problem with null cifs super block with previous patch
SMB3: Backup intent flag missing from some more ops
Linus Torvalds [Sun, 9 Feb 2020 20:41:00 +0000 (12:41 -0800)]
Merge branch 'work.vboxsf' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vboxfs from Al Viro:
"This is the VirtualBox guest shared folder support by Hans de Goede,
with fixups for fs_parse folded in to avoid bisection hazards from
those API changes..."
* 'work.vboxsf' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fs: Add VirtualBox guest shared folder (vboxsf) support
Linus Torvalds [Sun, 9 Feb 2020 20:11:12 +0000 (12:11 -0800)]
Merge tag 'x86-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A set of fixes for X86:
- Ensure that the PIT is set up when the local APIC is disable or
configured in legacy mode. This is caused by an ordering issue
introduced in the recent changes which skip PIT initialization when
the TSC and APIC frequencies are already known.
- Handle malformed SRAT tables during early ACPI parsing which caused
an infinite loop anda boot hang.
- Fix a long standing race in the affinity setting code which affects
PCI devices with non-maskable MSI interrupts. The problem is caused
by the non-atomic writes of the MSI address (destination APIC id)
and data (vector) fields which the device uses to construct the MSI
message. The non-atomic writes are mandated by PCI.
If both fields change and the device raises an interrupt after
writing address and before writing data, then the MSI block
constructs a inconsistent message which causes interrupts to be
lost and subsequent malfunction of the device.
The fix is to redirect the interrupt to the new vector on the
current CPU first and then switch it over to the new target CPU.
This allows to observe an eventually raised interrupt in the
transitional stage (old CPU, new vector) to be observed in the APIC
IRR and retriggered on the new target CPU and the new vector.
The potential spurious interrupts caused by this are harmless and
can in the worst case expose a buggy driver (all handlers have to
be able to deal with spurious interrupts as they can and do happen
for various reasons).
- Add the missing suspend/resume mechanism for the HYPERV hypercall
page which prevents resume hibernation on HYPERV guests. This
change got lost before the merge window.
- Mask the IOAPIC before disabling the local APIC to prevent
potentially stale IOAPIC remote IRR bits which cause stale
interrupt lines after resume"
* tag 'x86-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/apic: Mask IOAPIC entries when disabling the local APIC
x86/hyperv: Suspend/resume the hypercall page for hibernation
x86/apic/msi: Plug non-maskable MSI affinity race
x86/boot: Handle malformed SRAT tables during early ACPI parsing
x86/timer: Don't skip PIT setup when APIC is disabled or in legacy mode
Linus Torvalds [Sun, 9 Feb 2020 20:09:43 +0000 (12:09 -0800)]
Merge tag 'smp-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull SMP fixes from Thomas Gleixner:
"Two fixes for the SMP related functionality:
- Make the UP version of smp_call_function_single() match SMP
semantics when called for a not available CPU. Instead of emitting
a warning and assuming that the function call target is CPU0,
return a proper error code like the SMP version does.
- Remove a superfluous check in smp_call_function_many_cond()"
* tag 'smp-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
smp/up: Make smp_call_function_single() match SMP semantics
smp: Remove superfluous cond_func check in smp_call_function_many_cond()
Linus Torvalds [Sun, 9 Feb 2020 20:04:09 +0000 (12:04 -0800)]
Merge tag 'perf-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Thomas Gleixner:
"A set of fixes and improvements for the perf subsystem:
Kernel fixes:
- Install cgroup events to the correct CPU context to prevent a
potential list double add
- Prevent an integer underflow in the perf mlock accounting
- Add a missing prototype for arch_perf_update_userpage()
Tooling:
- Add a missing unlock in the error path of maps__insert() in perf
maps.
- Fix the build with the latest libbfd
- Fix the perf parser so it does not delete parse event terms, which
caused a regression for using perf with the ARM CoreSight as the
sink configuration was missing due to the deletion.
- Fix the double free in the perf CPU map merging test case
- Add the missing ustring support for the perf probe command"
* tag 'perf-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf maps: Add missing unlock to maps__insert() error case
perf probe: Add ustring support for perf probe command
perf: Make perf able to build with latest libbfd
perf test: Fix test case Merge cpu map
perf parse: Copy string to perf_evsel_config_term
perf parse: Refactor 'struct perf_evsel_config_term'
kernel/events: Add a missing prototype for arch_perf_update_userpage()
perf/cgroups: Install cgroup events to correct cpuctx
perf/core: Fix mlock accounting in perf_mmap()
Linus Torvalds [Sun, 9 Feb 2020 20:00:12 +0000 (12:00 -0800)]
Merge tag 'timers-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
"Two small fixes for the time(r) subsystem:
- Handle a subtle race between the clocksource watchdog and a
concurrent clocksource watchdog stop/start sequence correctly to
prevent a timer double add bug.
- Fix the file path for the core time namespace file"
* tag 'timers-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource: Prevent double add_timer_on() for watchdog_timer
MAINTAINERS: Correct path to time namespace source file
Linus Torvalds [Sun, 9 Feb 2020 19:56:41 +0000 (11:56 -0800)]
Merge tag 'irq-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull interrupt fixes from Thomas Gleixner:
"A set of fixes for the interrupt subsystem:
- Provision only ACPI enabled redistributors on GICv3
- Use the proper command colums when building the INVALL command for
the GICv3-ITS
- Ensure the allocation of the L2 vPE table for GICv4.1
- Correct the GICv4.1 VPROBASER programming so it uses the proper
size
- A set of small GICv4.1 tidy up patches
- Configuration cleanup for C-SKY interrupt chip
- Clarify the function documentation for irq_set_wake() to document
that the wakeup functionality is orthogonal to the irq
disable/enable mechanism"
* tag 'irq-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gic-v3-its: Rename VPENDBASER/VPROPBASER accessors
irqchip/gic-v3-its: Remove superfluous WARN_ON
irqchip/gic-v4.1: Drop 'tmp' in inherit_vpe_l1_table_from_rd()
irqchip/gic-v4.1: Ensure L2 vPE table is allocated at RD level
irqchip/gic-v4.1: Set vpe_l1_base for all redistributors
irqchip/gic-v4.1: Fix programming of GICR_VPROPBASER_4_1_SIZE
genirq: Clarify that irq wake state is orthogonal to enable/disable
irqchip/gic-v3-its: Reference to its_invall_cmd descriptor when building INVALL
irqchip: Some Kconfig cleanup for C-SKY
irqchip/gic-v3: Only provision redistributors that are enabled in ACPI
Linus Torvalds [Sun, 9 Feb 2020 19:54:50 +0000 (11:54 -0800)]
Merge tag 'efi-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fix from Thomas Gleixner:
"A single fix for a EFI boot regression on X86 which was caused by the
recent rework of the EFI memory map parsing. On systems with invalid
memmap entries the cleanup function uses an value which cannot be
relied on in this stage. Use the actual EFI memmap entry instead"
* tag 'efi-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi/x86: Fix boot regression on systems with invalid memmap entries
1) Unbalanced locking in mwifiex_process_country_ie, from Brian Norris.
2) Fix thermal zone registration in iwlwifi, from Andrei
Otcheretianski.
3) Fix double free_irq in sgi ioc3 eth, from Thomas Bogendoerfer.
4) Use after free in mptcp, from Florian Westphal.
5) Use after free in wireguard's root_remove_peer_lists, from Eric
Dumazet.
6) Properly access packets heads in bonding alb code, from Eric
Dumazet.
7) Fix data race in skb_queue_len(), from Qian Cai.
8) Fix regression in r8169 on some chips, from Heiner Kallweit.
9) Fix XDP program ref counting in hv_netvsc, from Haiyang Zhang.
10) Certain kinds of set link netlink operations can cause a NULL deref
in the ipv6 addrconf code. Fix from Eric Dumazet.
11) Don't cancel uninitialized work queue in drop monitor, from Ido
Schimmel.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (84 commits)
net: thunderx: use proper interface type for RGMII
mt76: mt7615: fix max_nss in mt7615_eeprom_parse_hw_cap
bpf: Improve bucket_log calculation logic
selftests/bpf: Test freeing sockmap/sockhash with a socket in it
bpf, sockhash: Synchronize_rcu before free'ing map
bpf, sockmap: Don't sleep while holding RCU lock on tear-down
bpftool: Don't crash on missing xlated program instructions
bpf, sockmap: Check update requirements after locking
drop_monitor: Do not cancel uninitialized work item
mlxsw: spectrum_dpipe: Add missing error path
mlxsw: core: Add validation of hardware device types for MGPIR register
mlxsw: spectrum_router: Clear offload indication from IPv6 nexthops on abort
selftests: mlxsw: Add test cases for local table route replacement
mlxsw: spectrum_router: Prevent incorrect replacement of local table routes
net: dsa: microchip: enable module autoprobe
ipv6/addrconf: fix potential NULL deref in inet6_set_link_af()
dpaa_eth: support all modes with rate adapting PHYs
net: stmmac: update pci platform data to use phy_interface
net: stmmac: xgmac: fix missing IFF_MULTICAST checki in dwxgmac2_set_filter
net: stmmac: fix missing IFF_MULTICAST check in dwmac4_set_filter
...
Hans de Goede [Thu, 12 Dec 2019 14:09:14 +0000 (15:09 +0100)]
fs: Add VirtualBox guest shared folder (vboxsf) support
VirtualBox hosts can share folders with guests, this commit adds a
VFS driver implementing the Linux-guest side of this, allowing folders
exported by the host to be mounted under Linux.
This driver depends on the guest <-> host IPC functions exported by
the vboxguest driver.
Acked-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Linus Torvalds [Sat, 8 Feb 2020 22:28:26 +0000 (14:28 -0800)]
Merge tag 'powerpc-5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Fix an existing bug in our user access handling, exposed by one of
the bug fixes we merged this cycle.
- A fix for a boot hang on 32-bit with CONFIG_TRACE_IRQFLAGS and the
recently added CONFIG_VMAP_STACK.
Thanks to: Christophe Leroy, Guenter Roeck.
* tag 'powerpc-5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc: Fix CONFIG_TRACE_IRQFLAGS with CONFIG_VMAP_STACK
powerpc/futex: Fix incorrect user access blocking
Linus Torvalds [Sat, 8 Feb 2020 22:19:39 +0000 (14:19 -0800)]
Fix up remaining devm_ioremap_nocache() in SGI IOC3 8250 UART driver
This is a merge error on my part - the driver was merged into mainline
by commit c5951e7c8ee5 ("Merge tag 'mips_5.6' of git://../mips/linux")
over a week ago, but nobody apparently noticed that it didn't actually
build due to still having a reference to the devm_ioremap_nocache()
function, removed a few days earlier through commit 6a1000bd2703 ("Merge
tag 'ioremap-5.6' of git://../ioremap").
Apparently this didn't get any build testing anywhere. Not perhaps all
that surprising: it's restricted to 64-bit MIPS only, and only with the
new SGI_MFD_IOC3 support enabled.
I only noticed because the ioremap conflicts in the ARM SoC driver
update made me check there weren't any others hiding, and I found this
one.
Linus Torvalds [Sat, 8 Feb 2020 22:17:27 +0000 (14:17 -0800)]
Merge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC late updates from Olof Johansson:
"This is some material that we picked up into our tree late, or that
had more complex dependencies on more than one topic branch that makes
sense to keep separately.
- TI support for secure accelerators and hwrng on OMAP4/5
- TI camera changes for dra7 and am437x and SGX improvement due to
better reset control support on am335x, am437x and dra7
- Davinci moves to proper clocksource on DM365, and regulator/audio
improvements for DM365 and DM644x eval boards"
* tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (32 commits)
ARM: dts: omap4-droid4: Enable hdq for droid4 ds250x 1-wire battery nvmem
ARM: dts: motorola-cpcap-mapphone: Configure calibration interrupt
ARM: dts: Configure interconnect target module for am437x sgx
ARM: dts: Configure sgx for dra7
ARM: dts: Configure rstctrl reset for am335x SGX
ARM: dts: dra7: Add ti-sysc node for VPE
ARM: dts: dra7: add vpe clkctrl node
ARM: dts: am43x-epos-evm: Add VPFE and OV2659 entries
ARM: dts: am437x-sk-evm: Add VPFE and OV2659 entries
ARM: dts: am43xx: add support for clkout1 clock
arm: dts: dra76-evm: Add CAL and OV5640 nodes
arm: dtsi: dra76x: Add CAL dtsi node
arm: dts: dra72-evm-common: Add entries for the CSI2 cameras
ARM: dts: DRA72: Add CAL dtsi node
ARM: dts: dra7-l4: Add ti-sysc node for CAM
ARM: OMAP: DRA7xx: Make CAM clock domain SWSUP only
ARM: dts: dra7: add cam clkctrl node
ARM: OMAP2+: Drop legacy platform data for omap4 des
ARM: OMAP2+: Drop legacy platform data for omap4 sham
ARM: OMAP2+: Drop legacy platform data for omap4 aes
...
Linus Torvalds [Sat, 8 Feb 2020 22:15:41 +0000 (14:15 -0800)]
Merge tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC defconfig updates from Olof Johansson:
"We keep this in a separate branch to avoid cross-branch conflicts, but
most of the material here is fairly boring -- some new drivers turned
on for hardware since they were merged, and some refreshed files due
to time having moved a lot of entries around"
* tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (38 commits)
ARM: configs: at91: enable MMC_SDHCI_OF_AT91 and MICROCHIP_PIT64B
arm64: defconfig: Enable Broadcom's GENET Ethernet controller
ARM: multi_v7_defconfig: Enable devfreq thermal integration
ARM: exynos_defconfig: Enable devfreq thermal integration
ARM: multi_v7_defconfig: Enable NFS v4.1 and v4.2
ARM: exynos_defconfig: Enable NFS v4.1 and v4.2
arm64: defconfig: Enable Actions Semi specific drivers
arm64: defconfig: Enable Broadcom's STB PCIe controller
arm64: defconfig: Enable CONFIG_CLK_IMX8MP by default
ARM: configs: at91: enable config flags for sam9x60 SoC
ARM: configs: at91: use savedefconfig
arm64: defconfig: Enable tegra XUDC support
ARM: defconfig: gemini: Update defconfig
arm64: defconfig: enable CONFIG_ARM_QCOM_CPUFREQ_NVMEM
arm64: defconfig: enable CONFIG_QCOM_CPR
arm64: defconfig: Enable HFPLL
arm64: defconfig: Enable CRYPTO_DEV_FSL_CAAM
ARM: imx_v6_v7_defconfig: Select the TFP410 driver
ARM: imx_v6_v7_defconfig: Enable NFS_V4_1 and NFS_V4_2 support
arm64: defconfig: Enable ATH10K_SNOC
...
Linus Torvalds [Sat, 8 Feb 2020 22:04:19 +0000 (14:04 -0800)]
Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC-related driver updates from Olof Johansson:
"Various driver updates for platforms:
- Nvidia: Fuse support for Tegra194, continued memory controller
pieces for Tegra30
- NXP/FSL: Refactorings of QuickEngine drivers to support
ARM/ARM64/PPC
- NXP/FSL: i.MX8MP SoC driver pieces
- TI Keystone: ring accelerator driver
- Qualcomm: SCM driver cleanup/refactoring + support for new SoCs.
- Xilinx ZynqMP: feature checking interface for firmware. Mailbox
communication for power management
- Overall support patch set for cpuidle on more complex hierarchies
(PSCI-based)
and misc cleanups, refactorings of Marvell, TI, other platforms"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (166 commits)
drivers: soc: xilinx: Use mailbox IPI callback
dt-bindings: power: reset: xilinx: Add bindings for ipi mailbox
drivers: soc: ti: knav_qmss_queue: Pass lockdep expression to RCU lists
MAINTAINERS: Add brcmstb PCIe controller entry
soc/tegra: fuse: Unmap registers once they are not needed anymore
soc/tegra: fuse: Correct straps' address for older Tegra124 device trees
soc/tegra: fuse: Warn if straps are not ready
soc/tegra: fuse: Cache values of straps and Chip ID registers
memory: tegra30-emc: Correct error message for timed out auto calibration
memory: tegra30-emc: Firm up hardware programming sequence
memory: tegra30-emc: Firm up suspend/resume sequence
soc/tegra: regulators: Do nothing if voltage is unchanged
memory: tegra: Correct reset value of xusb_hostr
soc/tegra: fuse: Add APB DMA dependency for Tegra20
bus: tegra-aconnect: Remove PM_CLK dependency
dt-bindings: mediatek: add MT6765 power dt-bindings
soc: mediatek: cmdq: delete not used define
memory: tegra: Add support for the Tegra194 memory controller
memory: tegra: Only include support for enabled SoCs
memory: tegra: Support DVFS on Tegra186 and later
...
Linus Torvalds [Sat, 8 Feb 2020 21:55:25 +0000 (13:55 -0800)]
Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC platform updates from Olof Johansson:
"Most of these are smaller fixes that have accrued, and some continued
cleanup of OMAP platforms towards shared frameworks.
One new SoC from Atmel/Microchip: sam9x60"
* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (35 commits)
ARM: OMAP2+: Fix undefined reference to omap_secure_init
ARM: s3c64xx: Drop unneeded select of TIMER_OF
ARM: exynos: Drop unneeded select of MIGHT_HAVE_CACHE_L2X0
ARM: s3c24xx: Switch to atomic pwm API in rx1950
ARM: OMAP2+: sleep43xx: Call secure suspend/resume handlers
ARM: OMAP2+: Use ARM SMC Calling Convention when OP-TEE is available
ARM: OMAP2+: Introduce check for OP-TEE in omap_secure_init()
ARM: OMAP2+: Add omap_secure_init callback hook for secure initialization
ARM: at91: Documentation: add sam9x60 product and datasheet
ARM: at91: pm: use of_device_id array to find the proper shdwc node
ARM: at91: pm: use SAM9X60 PMC's compatible
ARM: imx: only select ARM_ERRATA_814220 for ARMv7-A
ARM: zynq: use physical cpuid in zynq_slcr_cpu_stop/start
ARM: tegra: Use clk_m CPU on Tegra124 LP1 resume
ARM: tegra: Modify reshift divider during LP1
ARM: tegra: Enable PLLP bypass during Tegra124 LP1
ARM: samsung: Rename Samsung and Exynos to lowercase
ARM: exynos: Correct the help text for platform Kconfig option
ARM: bcm: Select ARM_AMBA for ARCH_BRCMSTB
ARM: brcmstb: Add debug UART entry for 7216
...
Linus Torvalds [Sat, 8 Feb 2020 21:44:41 +0000 (13:44 -0800)]
Merge tag 'compat-ioctl-fix' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground
Pull compat-ioctl fix from Arnd Bergmann:
"One patch in the compat-ioctl series broke 32-bit rootfs for multiple
people testing on 64-bit kernels. Let's fix it in -rc1 before others
run into the same issue"
* tag 'compat-ioctl-fix' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground:
compat_ioctl: fix FIONREAD on devices
Linus Torvalds [Sat, 8 Feb 2020 21:26:41 +0000 (13:26 -0800)]
Merge branch 'merge.nfs-fs_parse.1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs file system parameter updates from Al Viro:
"Saner fs_parser.c guts and data structures. The system-wide registry
of syntax types (string/enum/int32/oct32/.../etc.) is gone and so is
the horror switch() in fs_parse() that would have to grow another case
every time something got added to that system-wide registry.
New syntax types can be added by filesystems easily now, and their
namespace is that of functions - not of system-wide enum members. IOW,
they can be shared or kept private and if some turn out to be widely
useful, we can make them common library helpers, etc., without having
to do anything whatsoever to fs_parse() itself.
And we already get that kind of requests - the thing that finally
pushed me into doing that was "oh, and let's add one for timeouts -
things like 15s or 2h". If some filesystem really wants that, let them
do it. Without somebody having to play gatekeeper for the variants
blessed by direct support in fs_parse(), TYVM.
Quite a bit of boilerplate is gone. And IMO the data structures make a
lot more sense now. -200LoC, while we are at it"
* 'merge.nfs-fs_parse.1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (25 commits)
tmpfs: switch to use of invalfc()
cgroup1: switch to use of errorfc() et.al.
procfs: switch to use of invalfc()
hugetlbfs: switch to use of invalfc()
cramfs: switch to use of errofc() et.al.
gfs2: switch to use of errorfc() et.al.
fuse: switch to use errorfc() et.al.
ceph: use errorfc() and friends instead of spelling the prefix out
prefix-handling analogues of errorf() and friends
turn fs_param_is_... into functions
fs_parse: handle optional arguments sanely
fs_parse: fold fs_parameter_desc/fs_parameter_spec
fs_parser: remove fs_parameter_description name field
add prefix to fs_context->log
ceph_parse_param(), ceph_parse_mon_ips(): switch to passing fc_log
new primitive: __fs_parse()
switch rbd and libceph to p_log-based primitives
struct p_log, variants of warnf() et.al. taking that one instead
teach logfc() to handle prefices, give it saner calling conventions
get rid of cg_invalf()
...
Linus Torvalds [Sat, 8 Feb 2020 21:04:49 +0000 (13:04 -0800)]
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull misc vfs updates from Al Viro:
- bmap series from cmaiolino
- getting rid of convolutions in copy_mount_options() (use a couple of
copy_from_user() instead of the __get_user() crap)
* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
saner copy_mount_options()
fibmap: Reject negative block numbers
fibmap: Use bmap instead of ->bmap method in ioctl_fibmap
ecryptfs: drop direct calls to ->bmap
cachefiles: drop direct usage of ->bmap method.
fs: Enable bmap() function to properly return errors
Linus Torvalds [Sat, 8 Feb 2020 19:44:02 +0000 (11:44 -0800)]
Merge branch 'pipe-exclusive-wakeup'
Merge thundering herd avoidance on pipe IO.
This would have been applied for 5.5 already, but got delayed because of
a user-space race condition in the GNU make jobserver code. Now that
there's a new GNU make 4.3 release, and most distributions seem to have
at least applied the (almost three year old) fix for the problem, let's
see if people notice.
And it might have been just bad random timing luck on my machine.
If you do hit the race condition, things will still work, but the
symptom is that you don't get nearly the expected parallelism when using
"make -j<N>".
The jobserver bug can definitely happen without this patch too, but
seems to be easier to trigger when we no longer wake up pipe waiters
unnecessarily.
* pipe-exclusive-wakeup:
pipe: use exclusive waits when reading or writing
Linus Torvalds [Mon, 9 Dec 2019 17:48:27 +0000 (09:48 -0800)]
pipe: use exclusive waits when reading or writing
This makes the pipe code use separate wait-queues and exclusive waiting
for readers and writers, avoiding a nasty thundering herd problem when
there are lots of readers waiting for data on a pipe (or, less commonly,
lots of writers waiting for a pipe to have space).
While this isn't a common occurrence in the traditional "use a pipe as a
data transport" case, where you typically only have a single reader and
a single writer process, there is one common special case: using a pipe
as a source of "locking tokens" rather than for data communication.
In particular, the GNU make jobserver code ends up using a pipe as a way
to limit parallelism, where each job consumes a token by reading a byte
from the jobserver pipe, and releases the token by writing a byte back
to the pipe.
This pattern is fairly traditional on Unix, and works very well, but
will waste a lot of time waking up a lot of processes when only a single
reader needs to be woken up when a writer releases a new token.
A simplified test-case of just this pipe interaction is to create 64
processes, and then pass a single token around between them (this
test-case also intentionally passes another token that gets ignored to
test the "wake up next" logic too, in case anybody wonders about it):
#include <unistd.h>
int main(int argc, char **argv)
{
int fd[2], counters[2];
do {
int i;
read(fd[0], &i, sizeof(i));
if (i < 0)
continue;
counters[0] = i+1;
write(fd[1], counters, (1+(i & 1)) *sizeof(int));
} while (counters[0] < 1000000);
return 0;
}
and in a perfect world, passing that token around should only cause one
context switch per transfer, when the writer of a token causes a
directed wakeup of just a single reader.
But with the "writer wakes all readers" model we traditionally had, on
my test box the above case causes more than an order of magnitude more
scheduling: instead of the expected ~1M context switches, "perf stat"
shows
[ Note! This kernel improvement seems to be very good at triggering a
race condition in the make jobserver (in GNU make 4.2.1) for me. It's
a long known bug that was fixed back in June 2017 by GNU make commit b552b0525198 ("[SV 51159] Use a non-blocking read with pselect to
avoid hangs.").
But there wasn't a new release of GNU make until 4.3 on Jan 19 2020,
so a number of distributions may still have the buggy version. Some
have backported the fix to their 4.2.1 release, though, and even
without the fix it's quite timing-dependent whether the bug actually
is hit. ]
Josh Triplett says:
"I've been hammering on your pipe fix patch (switching to exclusive
wait queues) for a month or so, on several different systems, and I've
run into no issues with it. The patch *substantially* improves
parallel build times on large (~100 CPU) systems, both with parallel
make and with other things that use make's pipe-based jobserver.
All current distributions (including stable and long-term stable
distributions) have versions of GNU make that no longer have the
jobserver bug"
Arnd Bergmann [Fri, 7 Feb 2020 16:55:48 +0000 (17:55 +0100)]
compat_ioctl: fix FIONREAD on devices
My final cleanup patch for sys_compat_ioctl() introduced a regression on
the FIONREAD ioctl command, which is used for both regular and special
files, but only works on regular files after my patch, as I had missed
the warning that Al Viro put into a comment right above it.
Change it back so it can work on any file again by moving the implementation
to do_vfs_ioctl() instead.
Fixes: 77b9040195de ("compat_ioctl: simplify the implementation") Reported-and-tested-by: Christian Zigotzky <chzigotzky@xenosoft.de> Reported-and-tested-by: youling257 <youling257@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Tim Harvey [Fri, 7 Feb 2020 20:40:26 +0000 (12:40 -0800)]
net: thunderx: use proper interface type for RGMII
The configuration of the OCTEONTX XCV_DLL_CTL register via
xcv_init_hw() is such that the RGMII RX delay is bypassed
leaving the RGMII TX delay enabled in the MAC:
The following pull-request contains BPF updates for your *net* tree.
We've added 15 non-merge commits during the last 10 day(s) which contain
a total of 12 files changed, 114 insertions(+), 31 deletions(-).
The main changes are:
1) Various BPF sockmap fixes related to RCU handling in the map's tear-
down code, from Jakub Sitnicki.
2) Fix macro state explosion in BPF sk_storage map when calculating its
bucket_log on allocation, from Martin KaFai Lau.
3) Fix potential BPF sockmap update race by rechecking socket's established
state under lock, from Lorenz Bauer.
4) Fix crash in bpftool on missing xlated instructions when kptr_restrict
sysctl is set, from Toke Høiland-Jørgensen.
5) Fix i40e's XSK wakeup code to return proper error in busy state and
various misc fixes in xdpsock BPF sample code, from Maciej Fijalkowski.
6) Fix the way modifiers are skipped in BTF in the verifier while walking
pointers to avoid program rejection, from Alexei Starovoitov.
7) Fix Makefile for runqslower BPF tool to i) rebuild on libbpf changes and
ii) to fix undefined reference linker errors for older gcc version due to
order of passed gcc parameters, from Yulia Kartseva and Song Liu.
8) Fix a trampoline_count BPF kselftest warning about missing braces around
initializer, from Andrii Nakryiko.
9) Fix up redundant "HAVE" prefix from large INSN limit kernel probe in
bpftool, from Michal Rostecki.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
powerpc: Fix CONFIG_TRACE_IRQFLAGS with CONFIG_VMAP_STACK
When CONFIG_PROVE_LOCKING is selected together with (now default)
CONFIG_VMAP_STACK, kernel enter deadlock during boot.
At the point of checking whether interrupts are enabled or not, the
value of MSR saved on stack is read using the physical address of the
stack. But at this point, when using VMAP stack the DATA MMU
translation has already been re-enabled, leading to deadlock.
Don't use the physical address of the stack when
CONFIG_VMAP_STACK is set.
The early versions of our kernel user access prevention (KUAP) were
written by Russell and Christophe, and didn't have separate
read/write access.
At some point I picked up the series and added the read/write access,
but I failed to update the usages in futex.h to correctly allow read
and write.
However we didn't notice because of another bug which was causing the
low-level code to always enable read and write. That bug was fixed
recently in commit 1d8f739b07bd ("powerpc/kuap: Fix set direction in
allow/prevent_user_access()").
futex_atomic_cmpxchg_inatomic() is passed the user address as %3 and
does:
Zenghui Yu [Thu, 6 Feb 2020 07:57:08 +0000 (15:57 +0800)]
irqchip/gic-v4.1: Ensure L2 vPE table is allocated at RD level
In GICv4, we will ensure that level2 vPE table memory is allocated
for the specified vpe_id on all v4 ITS, in its_alloc_vpe_table().
This still works well for the typical GICv4.1 implementation, where
the new vPE table is shared between the ITSs and the RDs.
To make it explicit, let us introduce allocate_vpe_l2_table() to
make sure that the L2 tables are allocated on all v4.1 RDs. We're
likely not need to allocate memory in it because the vPE table is
shared and (L2 table is) already allocated at ITS level, except
for the case where the ITS doesn't share anything (say SVPET == 0,
practically unlikely but architecturally allowed).
The implementation of allocate_vpe_l2_table() is mostly copied from
its_alloc_table_entry().