Linus Torvalds [Mon, 28 Oct 2019 11:47:22 +0000 (12:47 +0100)]
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio fixes from Michael Tsirkin:
"Some minor fixes"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
vringh: fix copy direction of vringh_iov_push_kern()
vsock/virtio: remove unused 'work' field from 'struct virtio_vsock_pkt'
virtio_ring: fix stalls for packed rings
vsock/virtio: remove unused 'work' field from 'struct virtio_vsock_pkt'
The 'work' field was introduced with commit 06a8fc78367d0
("VSOCK: Introduce virtio_vsock_common.ko")
but it is never used in the code, so we can remove it to save
memory allocated in the per-packet 'struct virtio_vsock_pkt'
Suggested-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Marvin Liu [Mon, 21 Oct 2019 17:10:04 +0000 (01:10 +0800)]
virtio_ring: fix stalls for packed rings
When VIRTIO_F_RING_EVENT_IDX is negotiated, virtio devices can
use virtqueue_enable_cb_delayed_packed to reduce the number of device
interrupts. At the moment, this is the case for virtio-net when the
napi_tx module parameter is set to false.
In this case, the virtio driver selects an event offset and expects that
the device will send a notification when rolling over the event offset
in the ring. However, if this roll-over happens before the event
suppression structure update, the notification won't be sent. To address
this race condition the driver needs to check wether the device rolled
over the offset after updating the event suppression structure.
With VIRTIO_F_RING_PACKED, the virtio driver did this by reading the
flags field of the descriptor at the specified offset.
Unfortunately, checking at the event offset isn't reliable: if
descriptors are chained (e.g. when INDIRECT is off) not all descriptors
are overwritten by the device, so it's possible that the device skipped
the specific descriptor driver is checking when writing out used
descriptors. If this happens, the driver won't detect the race condition
and will incorrectly expect the device to send a notification.
For virtio-net, the result will be a TX queue stall, with the
transmission getting blocked forever.
With the packed ring, it isn't easy to find a location which is
guaranteed to change upon the roll-over, except the next device
descriptor, as described in the spec:
Writes of device and driver descriptors can generally be
reordered, but each side (driver and device) are only required to
poll (or test) a single location in memory: the next device descriptor after
the one they processed previously, in circular order.
while this might be sub-optimal, let's do exactly this for now.
Cc: stable@vger.kernel.org Cc: Jason Wang <jasowang@redhat.com> Fixes: f51f982682e2a ("virtio_ring: leverage event idx in packed ring") Signed-off-by: Marvin Liu <yong.liu@intel.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Linus Torvalds [Sun, 27 Oct 2019 11:14:40 +0000 (07:14 -0400)]
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"Two fixes for the VMWare guest support:
- Unbreak VMWare platform detection which got wreckaged by converting
an integer constant to a string constant.
- Fix the clang build of the VMWAre hypercall by explicitely
specifying the ouput register for INL instead of using the short
form"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpu/vmware: Fix platform detection VMWARE_PORT macro
x86/cpu/vmware: Use the full form of INL in VMWARE_HYPERCALL, for clang/llvm
Linus Torvalds [Sun, 27 Oct 2019 11:04:22 +0000 (07:04 -0400)]
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
"A small set of fixes for time(keeping):
- Add a missing include to prevent compiler warnings.
- Make the VDSO implementation of clock_getres() POSIX compliant
again. A recent change dropped the NULL pointer guard which is
required as NULL is a valid pointer value for this function.
- Fix two function documentation typos"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
posix-cpu-timers: Fix two trivial comments
timers/sched_clock: Include local timekeeping.h for missing declarations
lib/vdso: Make clock_getres() POSIX compliant again
Linus Torvalds [Sun, 27 Oct 2019 10:59:34 +0000 (06:59 -0400)]
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Thomas Gleixner:
"A set of perf fixes:
kernel:
- Unbreak the tracking of auxiliary buffer allocations which got
imbalanced causing recource limit failures.
- Fix the fallout of splitting of ToPA entries which missed to shift
the base entry PA correctly.
- Use the correct context to lookup the AUX event when unmapping the
associated AUX buffer so the event can be stopped and the buffer
reference dropped.
tools:
- Fix buildiid-cache mode setting in copyfile_mode_ns() when copying
/proc/kcore
- Fix freeing id arrays in the event list so the correct event is
closed.
- Sync sched.h anc kvm.h headers with the kernel sources.
- Link jvmti against tools/lib/ctype.o to have weak strlcpy().
- Fix multiple memory and file descriptor leaks, found by coverity in
perf annotate.
- Fix leaks in error handling paths in 'perf c2c', 'perf kmem', found
by a static analysis tool"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/aux: Fix AUX output stopping
perf/aux: Fix tracking of auxiliary trace buffer allocation
perf/x86/intel/pt: Fix base for single entry topa
perf kmem: Fix memory leak in compact_gfp_flags()
tools headers UAPI: Sync sched.h with the kernel
tools headers kvm: Sync kvm.h headers with the kernel sources
tools headers kvm: Sync kvm headers with the kernel sources
tools headers kvm: Sync kvm headers with the kernel sources
perf c2c: Fix memory leak in build_cl_output()
perf tools: Fix mode setting in copyfile_mode_ns()
perf annotate: Fix multiple memory and file descriptor leaks
perf tools: Fix resource leak of closedir() on the error paths
perf evlist: Fix fix for freed id arrays
perf jvmti: Link against tools/lib/ctype.h to have weak strlcpy()
Linus Torvalds [Sun, 27 Oct 2019 10:55:55 +0000 (06:55 -0400)]
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
"Two fixes for interrupt controller drivers:
- Skip IRQ_M_EXT entries in the device tree when initializing the
RISCV PLIC controller to avoid a double init attempt.
- Use the correct ITS list when issuing the VMOVP synchronization
command so the operation works only on the ITS instances which are
associated to a VM"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/sifive-plic: Skip contexts except supervisor in plic_init()
irqchip/gic-v3-its: Use the exact ITSList for VMOVP
Linus Torvalds [Sun, 27 Oct 2019 10:41:52 +0000 (06:41 -0400)]
Merge tag '5.4-rc5-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Seven cifs/smb3 fixes, including three for stable"
* tag '5.4-rc5-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: Fix cifsInodeInfo lock_sem deadlock when reconnect occurs
CIFS: Fix use after free of file info structures
CIFS: Fix retry mid list corruption on reconnects
cifs: Fix missed free operations
CIFS: avoid using MID 0xFFFF
cifs: clarify comment about timestamp granularity for old servers
cifs: Handle -EINPROGRESS only when noblockcnt is set
Linus Torvalds [Sat, 26 Oct 2019 23:43:12 +0000 (19:43 -0400)]
Merge tag 'mips_fixes_5.4_3' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS fixes from Paul Burton:
"A few MIPS fixes:
- Fix VDSO time-related function behavior for systems where we need
to fall back to syscalls, but were instead returning bogus results.
- A fix to TLB exception handlers for Cavium Octeon systems where
they would inadvertently clobber the $1/$at register.
- A build fix for bcm63xx configurations.
- Switch to using my @kernel.org email address"
* tag 'mips_fixes_5.4_3' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
MIPS: tlbex: Fix build_restore_pagemask KScratch restore
MIPS: bmips: mark exception vectors as char arrays
mips: vdso: Fix __arch_get_hw_counter()
MAINTAINERS: Use @kernel.org address for Paul Burton
Linus Torvalds [Sat, 26 Oct 2019 20:36:47 +0000 (16:36 -0400)]
Merge tag 'staging-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fix from Greg KH:
"Here is a single staging driver fix, for the wlan-ng driver, that
resolves a reported issue.
It is been in linux-next for a while with no reported issues"
* tag 'staging-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: wlan-ng: fix exit return when sme->key_idx >= NUM_WEPKEYS
Linus Torvalds [Sat, 26 Oct 2019 19:17:54 +0000 (15:17 -0400)]
Merge tag 'char-misc-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull binder fix from Greg KH:
"This is a single binder fix to resolve a reported issue by Jann. It's
been in linux-next for a while with no reported issues"
* tag 'char-misc-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
binder: Don't modify VMA bounds in ->mmap handler
Linus Torvalds [Sat, 26 Oct 2019 19:14:55 +0000 (15:14 -0400)]
Merge tag 'usb-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are a number of small USB driver fixes for 5.4-rc5.
More "fun" with some of the misc USB drivers as found by syzbot, and
there are a number of other small bugfixes in here for reported
issues.
All have been in linux-next for a while with no reported issues"
* tag 'usb-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: cdns3: Error out if USB_DR_MODE_UNKNOWN in cdns3_core_init_role()
USB: ldusb: fix read info leaks
USB: serial: ti_usb_3410_5052: clean up serial data access
USB: serial: ti_usb_3410_5052: fix port-close races
USB: usblp: fix use-after-free on disconnect
usb: udc: lpc32xx: fix bad bit shift operation
usb: cdns3: Fix dequeue implementation.
USB: legousbtower: fix a signedness bug in tower_probe()
USB: legousbtower: fix memleak on disconnect
USB: ldusb: fix memleak on disconnect
Linus Torvalds [Sat, 26 Oct 2019 19:06:58 +0000 (15:06 -0400)]
Merge branch 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"A few driver fixes for the I2C subsystem"
* 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: stm32f7: remove warning when compiling with W=1
i2c: stm32f7: fix a race in slave mode with arbitration loss irq
i2c: stm32f7: fix first byte to send in slave mode
i2c: mt65xx: fix NULL ptr dereference
i2c: aspeed: fix master pending state handling
Linus Torvalds [Sat, 26 Oct 2019 18:59:51 +0000 (14:59 -0400)]
Merge tag 'for-linus-2019-10-26' of git://git.kernel.dk/linux-block
Pull block and io_uring fixes from Jens Axboe:
"A bit bigger than usual at this point in time, mostly due to some good
bug hunting work by Pavel that resulted in three io_uring fixes from
him and two from me. Anyway, this pull request contains:
- Revert of the submit-and-wait optimization for io_uring, it can't
always be done safely. It depends on commands always making
progress on their own, which isn't necessarily the case outside of
strict file IO. (me)
- Series of two patches from me and three from Pavel, fixing issues
with shared data and sequencing for io_uring.
- Lastly, two timeout sequence fixes for io_uring (zhangyi)
- Two nbd patches fixing races (Josef)
- libahci regulator_get_optional() fix (Mark)"
* tag 'for-linus-2019-10-26' of git://git.kernel.dk/linux-block:
nbd: verify socket is supported during setup
ata: libahci_platform: Fix regulator_get_optional() misuse
nbd: handle racing with error'ed out commands
nbd: protect cmd->status with cmd->lock
io_uring: fix bad inflight accounting for SETUP_IOPOLL|SETUP_SQTHREAD
io_uring: used cached copies of sq->dropped and cq->overflow
io_uring: Fix race for sqes with userspace
io_uring: Fix broken links with offloading
io_uring: Fix corrupted user_data
io_uring: correct timeout req sequence when inserting a new entry
io_uring : correct timeout req sequence when waiting timeout
io_uring: revert "io_uring: optimize submit_and_wait API"
Linus Torvalds [Sat, 26 Oct 2019 10:35:46 +0000 (06:35 -0400)]
Merge tag 's390-5.4-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Vasily Gorbik:
- Add R_390_GLOB_DAT relocation type support. This fixes boot problem
on linux-next.
- Fix memory leak in zcrypt
* tag 's390-5.4-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/kaslr: add support for R_390_GLOB_DAT relocation type
s390/zcrypt: fix memleak at release
Linus Torvalds [Sat, 26 Oct 2019 10:26:04 +0000 (06:26 -0400)]
Merge tag 'dax-fix-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull dax fix from Dan Williams:
"Fix a performance regression that followed from a fix to the
conversion of the fsdax implementation to the xarray. v5.3 users
report that they stop seeing huge page mappings on an application +
filesystem layout that was seeing huge pages previously on v5.2"
* tag 'dax-fix-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
fs/dax: Fix pmd vs pte conflict detection
Linus Torvalds [Sat, 26 Oct 2019 00:11:33 +0000 (20:11 -0400)]
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Nine changes, eight to drivers (qla2xxx, hpsa, lpfc, alua, ch,
53c710[x2], target) and one core change that tries to close a race
between sysfs delete and module removal"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: lpfc: remove left-over BUILD_NVME defines
scsi: core: try to get module before removing device
scsi: hpsa: add missing hunks in reset-patch
scsi: target: core: Do not overwrite CDB byte 1
scsi: ch: Make it possible to open a ch device multiple times again
scsi: fix kconfig dependency warning related to 53C700_LE_ON_BE
scsi: sni_53c710: fix compilation error
scsi: scsi_dh_alua: handle RTPG sense code correctly during state transitions
scsi: qla2xxx: fix a potential NULL pointer dereference
If we always compile the get_break_insn_length inline function we can
remove the ifdefs and let dead code elimination take care of the warn
branch that is now unreadable because the report_bug stub always
returns BUG_TRAP_TYPE_BUG.
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Linus Torvalds [Fri, 25 Oct 2019 21:31:53 +0000 (17:31 -0400)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fix from Dmitry Torokhov:
"A fix for st1232 driver to properly report coordinates for 2nd and
subsequent fingers when more than one is on the surface"
Mike Christie [Thu, 17 Oct 2019 21:27:34 +0000 (16:27 -0500)]
nbd: verify socket is supported during setup
nbd requires socket families to support the shutdown method so the nbd
recv workqueue can be woken up from its sock_recvmsg call. If the socket
does not support the callout we will leave recv works running or get hangs
later when the device or module is removed.
This adds a check during socket connection/reconnection to make sure the
socket being passed in supports the needed callout.
Reported-by: syzbot+24c12fa8d218ed26011a@syzkaller.appspotmail.com Fixes: e9e006f5fcf2 ("nbd: fix max number of supported devs") Tested-by: Richard W.M. Jones <rjones@redhat.com> Signed-off-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
This driver is using regulator_get_optional() to handle all the supplies
that it handles, and only ever enables and disables all supplies en masse
without ever doing any other configuration of the device to handle missing
power. These are clear signs that the API is being misused - it should only
be used for supplies that may be physically absent from the system and in
these cases the hardware usually needs different configuration if the
supply is missing. Instead use normal regualtor_get(), if the supply is
not described in DT then the framework will substitute a dummy regulator in
so no special handling is needed by the consumer driver.
In the case of the PHY regulator the handling in the driver is a hack to
deal with integrated PHYs; the supplies are only optional in the sense
that that there's some confusion in the code about where they're bound to.
From a code point of view they function exactly as normal supplies so can
be treated as such. It'd probably be better to model this by instantiating
a PHY object for integrated PHYs.
Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
This was preceded by us timing out everything and shutting down the
sockets for the device. The problem is we had a request in the queue at
the same time, so we completed the request twice. This can actually
happen in a lot of cases, we fail to get a ref on our config, we only
have one connection and just error out the command, etc.
Fix this by checking cmd->status in nbd_read_stat. We only change this
under the cmd->lock, so we are safe to check this here and see if we've
already error'ed this command out, which would indicate that we've
completed it as well.
Reviewed-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Josef Bacik [Mon, 21 Oct 2019 19:56:27 +0000 (15:56 -0400)]
nbd: protect cmd->status with cmd->lock
We already do this for the most part, except in timeout and clear_req.
For the timeout case we take the lock after we grab a ref on the config,
but that isn't really necessary because we're safe to touch the cmd at
this point, so just move the order around.
For the clear_req cause this is initiated by the user, so again is safe.
Reviewed-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Linus Torvalds [Fri, 25 Oct 2019 20:11:55 +0000 (16:11 -0400)]
Merge tag 'modules-for-v5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
Pull modules fixes from Jessica Yu:
- Revert __ksymtab_$namespace.$symbol naming scheme back to
__ksymtab_$symbol, as it was causing issues with depmod.
Instead, have modpost extract a symbol's namespace from __kstrtabns
and __ksymtab_strings.
- Fix `make nsdeps` for out of tree kernel builds (make O=...) caused
by unescaped '/'.
Use a different sed delimiter to avoid this problem.
* tag 'modules-for-v5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
scripts/nsdeps: use alternative sed delimiter
symbol namespaces: revert to previous __ksymtab name scheme
modpost: make updating the symbol namespace explicit
modpost: delegate updating namespaces to separate function
Linus Torvalds [Fri, 25 Oct 2019 20:00:47 +0000 (16:00 -0400)]
Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Olof Johansson:
"A slightly larger set of fixes have accrued in the last two weeks.
Mostly a collection of the usual smaller fixes:
- Marvell Armada: USB phy setup issues on Turris Mox
- Broadcom: GPIO/pinmux DT mapping corrections for Stingray, MMC bus
width fix for RPi Zero W, GPIO LED removal for RPI CM3. Also some
maintainer updates.
- OMAP: Fixlets for display config, interrupt settings for wifi, some
clock/PM pieces. Also IOMMU regression fix and a ti-sysc
no-watchdog regression fix.
- i.MX: A few fixes around PM/settings, some devicetree fixlets and
catching up with config option changes in DRM
Linus Torvalds [Fri, 25 Oct 2019 19:52:05 +0000 (15:52 -0400)]
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"Bugfixes for ARM, PPC and x86, plus selftest improvements"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: nVMX: Don't leak L1 MMIO regions to L2
KVM: SVM: Fix potential wrong physical id in avic_handle_ldr_update
kvm: clear kvmclock MSR on reset
KVM: x86: fix bugon.cocci warnings
KVM: VMX: Remove specialized handling of unexpected exit-reasons
selftests: kvm: fix sync_regs_test with newer gccs
selftests: kvm: vmx_dirty_log_test: skip the test when VMX is not supported
selftests: kvm: consolidate VMX support checks
selftests: kvm: vmx_set_nested_state_test: don't check for VMX support twice
KVM: Don't shrink/grow vCPU halt_poll_ns if host side polling is disabled
selftests: kvm: synchronize .gitignore to Makefile
kvm: x86: Expose RDPID in KVM_GET_SUPPORTED_CPUID
KVM: arm64: pmu: Reset sample period on overflow handling
KVM: arm64: pmu: Set the CHAINED attribute before creating the in-kernel event
arm64: KVM: Handle PMCR_EL0.LC as RES1 on pure AArch64 systems
KVM: arm64: pmu: Fix cycle counter truncation
KVM: PPC: Book3S HV: XIVE: Ensure VP isn't already in use
Linus Torvalds [Fri, 25 Oct 2019 19:41:14 +0000 (15:41 -0400)]
Merge tag 'drm-fixes-2019-10-25' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Quiet week this week, which I suspect means some people just didn't
get around to sending me fixes pulls in time. This has 2 komeda and a
bunch of amdgpu fixes in it:
komeda:
- typo fixes
- flushing pipes fix
amdgpu:
- Fix suspend/resume issue related to multi-media engines
- Fix memory leak in user ptr code related to hmm conversion
- Fix possible VM faults when allocating page table memory
- Fix error handling in bo list ioctl"
* tag 'drm-fixes-2019-10-25' of git://anongit.freedesktop.org/drm/drm:
drm/komeda: Fix typos in komeda_splitter_validate
drm/komeda: Don't flush inactive pipes
drm/amdgpu/vce: fix allocation size in enc ring test
drm/amdgpu: fix error handling in amdgpu_bo_list_create
drm/amdgpu: fix potential VM faults
drm/amdgpu: user pages array memory leak fix
drm/amdgpu/vcn: fix allocation size in enc ring test
drm/amdgpu/uvd7: fix allocation size in enc ring test (v2)
drm/amdgpu/uvd6: fix allocation size in enc ring test (v2)
Linus Torvalds [Fri, 25 Oct 2019 19:25:51 +0000 (15:25 -0400)]
Merge tag 'mmc-v5.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"MMC host fixes:
- mxs: Fix flags passed to dmaengine_prep_slave_sg
- cqhci: Add a missing memory barrier
- sdhci-omap: Fix tuning procedure for temperatures < -20C"
* tag 'mmc-v5.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: mxs: fix flags passed to dmaengine_prep_slave_sg
mmc: cqhci: Commit descriptors before setting the doorbell
mmc: sdhci-omap: Fix Tuning procedure for temperatures < -20C
Jens Axboe [Fri, 25 Oct 2019 16:06:15 +0000 (10:06 -0600)]
io_uring: fix bad inflight accounting for SETUP_IOPOLL|SETUP_SQTHREAD
We currently assume that submissions from the sqthread are successful,
and if IO polling is enabled, we use that value for knowing how many
completions to look for. But if we overflowed the CQ ring or some
requests simply got errored and already completed, they won't be
available for polling.
For the case of IO polling and SQTHREAD usage, look at the pending
poll list. If it ever hits empty then we know that we don't have
anymore pollable requests inflight. For that case, simply reset
the inflight count to zero.
Reported-by: Pavel Begunkov <asml.silence@gmail.com> Reviewed-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jens Axboe [Fri, 25 Oct 2019 16:04:25 +0000 (10:04 -0600)]
io_uring: used cached copies of sq->dropped and cq->overflow
We currently use the ring values directly, but that can lead to issues
if the application is malicious and changes these values on our behalf.
Created in-kernel cached versions of them, and just overwrite the user
side when we update them. This is similar to how we treat the sq/cq
ring tail/head updates.
Reported-by: Pavel Begunkov <asml.silence@gmail.com> Reviewed-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Fri, 25 Oct 2019 09:31:31 +0000 (12:31 +0300)]
io_uring: Fix race for sqes with userspace
io_ring_submit() finalises with
1. io_commit_sqring(), which releases sqes to the userspace
2. Then calls to io_queue_link_head(), accessing released head's sqe
Reorder them.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pavel Begunkov [Fri, 25 Oct 2019 09:31:30 +0000 (12:31 +0300)]
io_uring: Fix broken links with offloading
io_sq_thread() processes sqes by 8 without considering links. As a
result, links will be randomely subdivided.
The easiest way to fix it is to call io_get_sqring() inside
io_submit_sqes() as do io_ring_submit().
Downsides:
1. This removes optimisation of not grabbing mm_struct for fixed files
2. It submitting all sqes in one go, without finer-grained sheduling
with cq processing.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Alan Mikhak [Thu, 24 Oct 2019 16:11:43 +0000 (09:11 -0700)]
irqchip/sifive-plic: Skip contexts except supervisor in plic_init()
Modify plic_init() to skip .dts interrupt contexts other
than supervisor external interrupt.
The .dts entry for plic may specify multiple interrupt contexts.
For example, it may assign two entries IRQ_M_EXT and IRQ_S_EXT,
in that order, to the same interrupt controller. This patch
modifies plic_init() to skip the IRQ_M_EXT context since
IRQ_S_EXT is currently the only supported context.
If IRQ_M_EXT is not skipped, plic_init() will report "handler
already present for context" when it comes across the IRQ_S_EXT
context in the next iteration of its loop.
Without this patch, .dts would have to be edited to replace the
value of IRQ_M_EXT with -1 for it to be skipped.
Dave Airlie [Fri, 25 Oct 2019 04:48:53 +0000 (14:48 +1000)]
Merge tag 'drm-fixes-5.4-2019-10-23' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
drm-fixes-5.4-2019-10-23:
amdgpu:
- Fix suspend/resume issue related to multi-media engines
- Fix memory leak in user ptr code related to hmm conversion
- Fix possible VM faults when allocating page table memory
- Fix error handling in bo list ioctl
Dave Wysochanski [Wed, 23 Oct 2019 09:02:33 +0000 (05:02 -0400)]
cifs: Fix cifsInodeInfo lock_sem deadlock when reconnect occurs
There's a deadlock that is possible and can easily be seen with
a test where multiple readers open/read/close of the same file
and a disruption occurs causing reconnect. The deadlock is due
a reader thread inside cifs_strict_readv calling down_read and
obtaining lock_sem, and then after reconnect inside
cifs_reopen_file calling down_read a second time. If in
between the two down_read calls, a down_write comes from
another process, deadlock occurs.
Fix the above by changing all down_write(lock_sem) calls to
down_write_trylock(lock_sem)/msleep() loop, which in turn
makes the second down_read call benign since it will never
block behind the writer while holding lock_sem.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com> Suggested-by: Ronnie Sahlberg <lsahlber@redhat.com> Reviewed--by: Ronnie Sahlberg <lsahlber@redhat.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Pavel Shilovsky [Wed, 23 Oct 2019 22:37:19 +0000 (15:37 -0700)]
CIFS: Fix use after free of file info structures
Currently the code assumes that if a file info entry belongs
to lists of open file handles of an inode and a tcon then
it has non-zero reference. The recent changes broke that
assumption when putting the last reference of the file info.
There may be a situation when a file is being deleted but
nothing prevents another thread to reference it again
and start using it. This happens because we do not hold
the inode list lock while checking the number of references
of the file info structure. Fix this by doing the proper
locking when doing the check.
Fixes: 487317c99477d ("cifs: add spinlock for the openFileList to cifsInodeInfo") Fixes: cb248819d209d ("cifs: use cifsInodeInfo->open_file_lock while iterating to avoid a panic") Cc: Stable <stable@vger.kernel.org> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Pavel Shilovsky [Tue, 22 Oct 2019 15:41:42 +0000 (08:41 -0700)]
CIFS: Fix retry mid list corruption on reconnects
When the client hits reconnect it iterates over the mid
pending queue marking entries for retry and moving them
to a temporary list to issue callbacks later without holding
GlobalMid_Lock. In the same time there is no guarantee that
mids can't be removed from the temporary list or even
freed completely by another thread. It may cause a temporary
list corruption:
Fix this by obtaining extra references for mids being retried
and marking them as MID_DELETED which indicates that such a mid
has been dequeued from the pending list.
Also move mid cleanup logic from DeleteMidQEntry to
_cifs_mid_q_entry_release which is called when the last reference
to a particular mid is put. This allows to avoid any use-after-free
of response buffers.
The patch needs to be backported to stable kernels. A stable tag
is not mentioned below because the patch doesn't apply cleanly
to any actively maintained stable kernel.
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> Reviewed-and-tested-by: David Wysochanski <dwysocha@redhat.com> Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Linus Torvalds [Thu, 24 Oct 2019 19:49:32 +0000 (15:49 -0400)]
Merge tag 'acpi-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"Fix locking issue in the error code path of a function that belongs to
the sysfs interface exposed by the ACPI NFIT handling code (Dan
Carpenter)"
* tag 'acpi-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: NFIT: Fix unlock on error in scrub_show()
Linus Torvalds [Thu, 24 Oct 2019 19:36:11 +0000 (15:36 -0400)]
Merge tag 'pm-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix problems related to frequency limits management in cpufreq
that were introduced during the 5.3 cycle (when PM QoS had started to
be used for that), fix a few issues in the OPP (operating performance
points) library code and fix up the recently added haltpoll cpuidle
driver.
The cpufreq changes are somewhat bigger that I would like them to be
at this stage of the cycle, but the problems fixed by them include
crashes on boot and shutdown in some cases (among other things) and in
my view it is better to address the root of the issue right away.
Specifics:
- Using device PM QoS of CPU devices for managing frequency limits in
cpufreq does not work, so introduce frequency QoS (based on the
original low-level PM QoS) for this purpose, switch cpufreq and
related code over to using it and fix a race involving deferred
updates of frequency limits on top of that (Rafael Wysocki, Sudeep
Holla).
- Avoid calling regulator_enable()/disable() from the OPP framework
to avoid side-effects on boot-enabled regulators that may change
their initial voltage due to performing initial voltage balancing
without all restrictions from the consumers (Marek Szyprowski).
- Avoid a kref management issue in the OPP library code and drop an
incorrectly added lockdep_assert_held() from it (Viresh Kumar).
- Make the recently added haltpoll cpuidle driver take the 'idle='
override into account as appropriate (Zhenzhong Duan)"
* tag 'pm-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
opp: Reinitialize the list_kref before adding the static OPPs again
cpufreq: Cancel policy update work scheduled before freeing
cpuidle: haltpoll: Take 'idle=' override into account
opp: core: Revert "add regulators enable and disable"
PM: QoS: Drop frequency QoS types from device PM QoS
cpufreq: Use per-policy frequency QoS
PM: QoS: Introduce frequency QoS
opp: of: drop incorrect lockdep_assert_held()
Linus Torvalds [Thu, 24 Oct 2019 19:31:55 +0000 (15:31 -0400)]
Merge tag 'gfs2-v5.4-rc4.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 fix from Andreas Gruenbacher:
"Fix a memory leak introduced in -rc1"
* tag 'gfs2-v5.4-rc4.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
gfs2: Fix memory leak when gfs2meta's fs_context is freed
Fabrice Gasnier [Tue, 1 Oct 2019 08:51:09 +0000 (10:51 +0200)]
i2c: stm32f7: fix a race in slave mode with arbitration loss irq
When in slave mode, an arbitration loss (ARLO) may be detected before the
slave had a chance to detect the stop condition (STOPF in ISR).
This is seen when two master + slave adapters switch their roles. It
provokes the i2c bus to be stuck, busy as SCL line is stretched.
- the I2C_SLAVE_STOP event is never generated due to STOPF flag is set but
don't generate an irq (race with ARLO irq, STOPIE is masked). STOPF flag
remains set until next master xfer (e.g. when STOPIE irq get unmasked).
In this case, completion is generated too early: immediately upon new
transfer request (then it doesn't send all data).
- Some data get stuck in TXDR register. As a consequence, the controller
stretches the SCL line: the bus gets busy until a future master transfer
triggers the bus busy / recovery mechanism (this can take time... and
may never happen at all)
So choice is to let the STOPF being detected by the slave isr handler,
to properly handle this stop condition. E.g. don't mask IRQs in error
handler, when the slave is running.
i2c: stm32f7: fix first byte to send in slave mode
The slave-interface documentation [1] states "the bus driver should
transmit the first byte" upon I2C_SLAVE_READ_REQUESTED slave event:
- 'val': backend returns first byte to be sent
The driver currently ignores the 1st byte to send on this event.
Fabien Parent [Fri, 18 Oct 2019 17:32:13 +0000 (19:32 +0200)]
i2c: mt65xx: fix NULL ptr dereference
Since commit abf4923e97c3 ("i2c: mediatek: disable zero-length transfers
for mt8183"), there is a NULL pointer dereference for all the SoCs
that don't have any quirk. mtk_i2c_functionality is not checking that
the quirks pointer is not NULL before starting to use it.
This commit add a call to i2c_check_quirks which will check whether
the quirks pointer is set, and if so will check if the IP has the
NO_ZERO_LEN quirk.
Fixes: abf4923e97c3 ("i2c: mediatek: disable zero-length transfers for mt8183") Signed-off-by: Fabien Parent <fparent@baylibre.com> Reviewed-by: Cengiz Can <cengiz@kernel.wtf> Reviewed-by: Hsin-Yi Wang <hsinyi@chromium.org> Tested-by: Ulrich Hecht <uli@fpond.eu> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Zenghui Yu [Wed, 23 Oct 2019 03:46:26 +0000 (03:46 +0000)]
irqchip/gic-v3-its: Use the exact ITSList for VMOVP
On a system without Single VMOVP support (say GITS_TYPER.VMOVP == 0),
we will map vPEs only on ITSs that will actually control interrupts
for the given VM. And when moving a vPE, the VMOVP command will be
issued only for those ITSs.
But when issuing VMOVPs we seemed fail to present the exact ITSList
to ITSs who are actually included in the synchronization operation.
The its_list_map we're currently using includes all ITSs in the system,
even though some of them don't have the corresponding vPE mapping at all.
Introduce get_its_list() to get the per-VM its_list_map, to indicate
which ITSs have vPE mappings for the given VM, and use this map as
the expected ITSList when building VMOVP. This is hopefully a performance
gain not to do some synchronization with those unsuspecting ITSs.
And initialize the whole command descriptor to zero at beginning, since
the seq_num and its_list should be RES0 when GITS_TYPER.VMOVP == 1.
Andrew Price [Fri, 4 Oct 2019 16:51:58 +0000 (11:51 -0500)]
gfs2: Fix memory leak when gfs2meta's fs_context is freed
gfs2 and gfs2meta share an ->init_fs_context function which allocates an
args structure stored in fc->fs_private. gfs2 registers a ->free
function to free this memory when the fs_context is cleaned up, but
there was not one registered for gfs2meta, causing a leak.
Register a ->free function for gfs2meta. The existing gfs2_fc_free
function does what we need.
Reported-by: syzbot+c2fdfd2b783754878fb6@syzkaller.appspotmail.com Fixes: 1f52aa08d12f ("gfs2: Convert gfs2 to fs_context") Signed-off-by: Andrew Price <anprice@redhat.com> Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
* pm-cpuidle:
cpuidle: haltpoll: Take 'idle=' override into account
* pm-opp:
opp: Reinitialize the list_kref before adding the static OPPs again
opp: core: Revert "add regulators enable and disable"
opp: of: drop incorrect lockdep_assert_held()
Linus Torvalds [Thu, 24 Oct 2019 10:09:42 +0000 (06:09 -0400)]
Merge tag 'sound-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"This is a usual small bump in the middle, we've got a set of ASoC
fixes in this week as shown in diffstat.
The only change in the core stuff is about (somewhat minor) PCM
debugfs error handling. The major changes are rather for Intel SOF and
topology coverage, as well as other platform (rockchip, samsung, stm)
and codec fixes.
As non-ASoC changes, a couple of new HD-audio chip fixes and a typo
correction of USB-audio driver validation code are found"
* tag 'sound-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (29 commits)
ALSA: hda: Add Tigerlake/Jasperlake PCI ID
ALSA: usb-audio: Fix copy&paste error in the validator
ALSA: hda/realtek - Add support for ALC711
ASoC: SOF: control: return true when kcontrol values change
ASoC: stm32: sai: fix sysclk management on shutdown
ASoC: Intel: sof-rt5682: add a check for devm_clk_get
ASoC: rsnd: Reinitialize bit clock inversion flag for every format setting
ASoC: simple_card_utils.h: Fix potential multiple redefinition error
ASoC: msm8916-wcd-digital: add missing MIX2 path for RX1/2
ASoC: core: Fix pcm code debugfs error
ASoc: rockchip: i2s: Fix RPM imbalance
ASoC: wm_adsp: Don't generate kcontrols without READ flags
ASoC: intel: bytcr_rt5651: add null check to support_button_press
ASoC: intel: sof_rt5682: add remove function to disable jack
ASoC: rt5682: add NULL handler to set_jack function
ASoC: intel: sof_rt5682: use separate route map for dmic
ASoC: SOF: Intel: hda: Disable DMI L1 entry during capture
ASoC: SOF: Intel: initialise and verify FW crash dump data.
ASoC: SOF: Intel: hda: fix warnings during FW load
ASoC: SOF: pcm: harden PCM STOP sequence
...
Fixes: a4872e80ce7d ("mfd: mt6397: Extract IRQ related code from core driver") Signed-off-by: Frank Wunderlich <frank-w@public-files.de> Signed-off-by: Lee Jones <lee.jones@linaro.org>
build_restore_pagemask() will restore the value of register $1/$at when
its restore_scratch argument is non-zero, and aims to do so by filling a
branch delay slot. Commit 0b24cae4d535 ("MIPS: Add missing EHB in mtc0
-> mfc0 sequence.") added an EHB instruction (Execution Hazard Barrier)
prior to restoring $1 from a KScratch register, in order to resolve a
hazard that can result in stale values of the KScratch register being
observed. In particular, P-class CPUs from MIPS with out of order
execution pipelines such as the P5600 & P6600 are affected.
Unfortunately this EHB instruction was inserted in the branch delay slot
causing the MFC0 instruction which performs the restoration to no longer
execute along with the branch. The result is that the $1 register isn't
actually restored, ie. the TLB refill exception handler clobbers it -
which is exactly the problem the EHB is meant to avoid for the P-class
CPUs.
Similarly build_get_pgd_vmalloc() will restore the value of $1/$at when
its mode argument equals refill_scratch, and suffers from the same
problem.
Fix this by in both cases moving the EHB earlier in the emitted code.
There's no reason it needs to immediately precede the MFC0 - it simply
needs to be between the MTC0 & MFC0.
This bug only affects Cavium Octeon systems which use
build_fast_tlb_refill_handler().
zhangyi (F) [Wed, 23 Oct 2019 07:10:09 +0000 (15:10 +0800)]
io_uring: correct timeout req sequence when inserting a new entry
The sequence number of the timeout req (req->sequence) indicate the
expected completion request. Because of each timeout req consume a
sequence number, so the sequence of each timeout req on the timeout
list shouldn't be the same. But now, we may get the same number (also
incorrect) if we insert a new entry before the last one, such as submit
such two timeout reqs on a new ring instance below.
Then, if we submit a nop req, req_2 will still timeout even the nop req
finished. This patch fix this problem by adjust the sequence number of
each reordered reqs when inserting a new entry.
zhangyi (F) [Wed, 23 Oct 2019 07:10:08 +0000 (15:10 +0800)]
io_uring : correct timeout req sequence when waiting timeout
The sequence number of reqs on the timeout_list before the timeout req
should be adjusted in io_timeout_fn(), because the current timeout req
will consumes a slot in the cq_ring and cq_tail pointer will be
increased, otherwise other timeout reqs may return in advance without
waiting for enough wait_nr.
There are cases where it isn't always safe to block for submission,
even if the caller asked to wait for events as well. Revert the
previous optimization of doing that.
Jonas Gorski [Tue, 22 Oct 2019 19:11:00 +0000 (21:11 +0200)]
MIPS: bmips: mark exception vectors as char arrays
The vectors span more than one byte, so mark them as arrays.
Fixes the following build error when building when using GCC 8.3:
In file included from ./include/linux/string.h:19,
from ./include/linux/bitmap.h:9,
from ./include/linux/cpumask.h:12,
from ./arch/mips/include/asm/processor.h:15,
from ./arch/mips/include/asm/thread_info.h:16,
from ./include/linux/thread_info.h:38,
from ./include/asm-generic/preempt.h:5,
from ./arch/mips/include/generated/asm/preempt.h:1,
from ./include/linux/preempt.h:81,
from ./include/linux/spinlock.h:51,
from ./include/linux/mmzone.h:8,
from ./include/linux/bootmem.h:8,
from arch/mips/bcm63xx/prom.c:10:
arch/mips/bcm63xx/prom.c: In function 'prom_init':
./arch/mips/include/asm/string.h:162:11: error: '__builtin_memcpy' forming offset [2, 32] is out of the bounds [0, 1] of object 'bmips_smp_movevec' with type 'char' [-Werror=array-bounds]
__ret = __builtin_memcpy((dst), (src), __len); \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/mips/bcm63xx/prom.c:97:3: note: in expansion of macro 'memcpy'
memcpy((void *)0xa0000200, &bmips_smp_movevec, 0x20);
^~~~~~
In file included from arch/mips/bcm63xx/prom.c:14:
./arch/mips/include/asm/bmips.h:80:13: note: 'bmips_smp_movevec' declared here
extern char bmips_smp_movevec;
Fixes: 18a1eef92dcd ("MIPS: BMIPS: Introduce bmips.h") Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Paul Burton <paulburton@kernel.org> Cc: linux-mips@vger.kernel.org Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org>
Olof Johansson [Thu, 24 Oct 2019 03:01:24 +0000 (20:01 -0700)]
Merge tag 'arm-soc/for-5.5/maintainers' of https://github.com/Broadcom/stblinux into arm/fixes
This pull request contains MAINTAINERS file updates for Broadcom SoCs
for the 5.5 kernel, please pull the following:
- Simon adds a .mailmap alias for his old email
- Stefan updates the existing BCM2835 with BCM2711 which is the chip
name for the Raspberry Pi 4
- Florian removes Gregory and Brian from the MAINTAINERS file for
BRCMSTB SoCs
* tag 'arm-soc/for-5.5/maintainers' of https://github.com/Broadcom/stblinux:
MAINTAINERS: Remove Gregory and Brian for ARCH_BRCMSTB
mailmap: Add Simon Arlott (replacement for expired email address)
MAINTAINERS: Add BCM2711 to BCM2835 ARCH
Kefeng Wang [Wed, 23 Oct 2019 03:23:02 +0000 (11:23 +0800)]
riscv: Fix undefined reference to vmemmap_populate_basepages
Using CONFIG_SPARSEMEM_VMEMMAP instead of CONFIG_SPARSEMEM to fix
following build issue.
riscv64-linux-ld: arch/riscv/mm/init.o: in function 'vmemmap_populate':
init.c:(.meminit.text+0x8): undefined reference to 'vmemmap_populate_basepages'
Kefeng Wang [Wed, 23 Oct 2019 03:23:01 +0000 (11:23 +0800)]
riscv: Fix implicit declaration of 'page_to_section'
With CONFIG_SPARSEMEM and !CONFIG_SPARSEMEM_VMEMMAP,
arch/riscv/include/asm/pgtable.h: In function ‘mk_pte’:
include/asm-generic/memory_model.h:64:14: error: implicit declaration of function ‘page_to_section’; did you mean ‘present_section’? [-Werror=implicit-function-declaration]
int __sec = page_to_section(__pg); \
^~~~~~~~~~~~~~~
Fixed by changing mk_pte() from inline function to macro.
riscv: fix fs/proc/kcore.c compilation with sparsemem enabled
Failed to compile Fedora/RISCV kernel (5.4-rc3+) with sparsemem enabled:
fs/proc/kcore.c: In function 'read_kcore':
fs/proc/kcore.c:510:8: error: implicit declaration of function 'kern_addr_valid'; did you mean 'virt_addr_valid'? [-Werror=implicit-function-declaration]
510 | if (kern_addr_valid(start)) {
| ^~~~~~~~~~~~~~~
| virt_addr_valid
Looking at other architectures I don't see kern_addr_valid being guarded by
CONFIG_FLATMEM.
Fixes: d95f1a542c3d ("RISC-V: Implement sparsemem") Signed-off-by: David Abdurachmanov <david.abdurachmanov@sifive.com> Tested-by: David Abdurachmanov <david.abdurachmanov@sifive.com> Reviewed-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
of: reserved_mem: add missing of_node_put() for proper ref-counting
Commit d698a388146c ("of: reserved-memory: ignore disabled memory-region
nodes") added an early return in of_reserved_mem_device_init_by_idx(), but
didn't call of_node_put() on a device_node whose ref-count was incremented
in the call to of_parse_phandle() preceding the early exit.
Linus Torvalds [Wed, 23 Oct 2019 19:43:51 +0000 (15:43 -0400)]
Merge tag 'trace-v5.4-rc3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"Two minor fixes:
- A race in perf trace initialization (missing mutexes)
- Minor fix to represent gfp_t in synthetic events as properly
signed"
* tag 'trace-v5.4-rc3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Fix race in perf_trace_buf initialization
tracing: Fix "gfp_t" format for synthetic events
Navid Emamdoost [Fri, 4 Oct 2019 18:58:43 +0000 (13:58 -0500)]
of: unittest: fix memory leak in unittest_data_add
In unittest_data_add, a copy buffer is created via kmemdup. This buffer
is leaked if of_fdt_unflatten_tree fails. The release for the
unittest_data buffer is added.
Fixes: b951f9dc7f25 ("Enabling OF selftest to run without machine's devicetree") Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com> Reviewed-by: Frank Rowand <frowand.list@gmail.com> Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Tue, 24 Sep 2019 19:37:56 +0000 (14:37 -0500)]
dt-bindings: riscv: Fix CPU schema errors
Fix the errors in the RiscV CPU DT schema:
Documentation/devicetree/bindings/riscv/cpus.example.dt.yaml: cpu@0: 'timebase-frequency' is a required property
Documentation/devicetree/bindings/riscv/cpus.example.dt.yaml: cpu@1: 'timebase-frequency' is a required property
Documentation/devicetree/bindings/riscv/cpus.example.dt.yaml: cpu@0: compatible:0: 'riscv' is not one of ['sifive,rocket0', 'sifive,e5', 'sifive,e51', 'sifive,u54-mc', 'sifive,u54', 'sifive,u5']
Documentation/devicetree/bindings/riscv/cpus.example.dt.yaml: cpu@0: compatible: ['riscv'] is too short
Documentation/devicetree/bindings/riscv/cpus.example.dt.yaml: cpu@0: 'timebase-frequency' is a required property
The DT spec allows for 'timebase-frequency' to be in 'cpu' or 'cpus' node
and RiscV requires it in /cpus node, so make it disallowed in cpu
nodes.
Fixes: 4fd669a8c487 ("dt-bindings: riscv: convert cpu binding to json-schema") Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: linux-riscv@lists.infradead.org Acked-by: Paul Walmsley <paul.walmsley@sifive.com> Signed-off-by: Rob Herring <robh@kernel.org>
Linus Torvalds [Wed, 23 Oct 2019 19:31:17 +0000 (15:31 -0400)]
Merge tag 'regulator-fix-v5.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"There are a few core fixes here around error handling and handling if
suspend mode configuration and some driver specific fixes here but the
most important change is the fix to the fixed-regulator DT schema
conversion introduced during the last merge window.
That fixes one of the last two errors preventing successful execution
of "make dt_binding_check" which will be enormously helpful for DT
schema development"
* tag 'regulator-fix-v5.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: qcom-rpmh: Fix PMIC5 BoB min voltage
regulator: pfuze100-regulator: Variable "val" in pfuze100_regulator_probe() could be uninitialized
regulator: lochnagar: Add on_off_delay for VDDCORE
regulator: ti-abb: Fix timeout in ti_abb_wait_txdone/ti_abb_clear_all_txdone
regulator: da9062: fix suspend_enable/disable preparation
dt-bindings: fixed-regulator: fix compatible enum
regulator: fixed: Prevent NULL pointer dereference when !CONFIG_OF
regulator: core: make regulator_register() EPROBE_DEFER aware
regulator: of: fix suspend-min/max-voltage parsing
Florian Fainelli [Fri, 18 Oct 2019 17:18:35 +0000 (10:18 -0700)]
MAINTAINERS: Remove Gregory and Brian for ARCH_BRCMSTB
The last time Gregory and Brian did a review was sometime around 2015,
since then, they have not been active for ARCH_BRCMSTB changes.
Following the position of other maintainers and Harald Welte's position
here:
Olof Johansson [Wed, 23 Oct 2019 17:08:11 +0000 (10:08 -0700)]
Merge tag 'omap-for-v5.4/fixes-rc4-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/fixes
Three fixes for omaps for v5.4-rc cycle
Two regression fixes for omap3 iommu. I missed applying two omap3
related iommu pdata quirks patches earlier because the kbuild test
robot produced errors on them for missing dependencies.
Fix ti-sysc interconnect target module driver handling for watchdog
quirk. I must have tested this earlier only with watchdog service
running, but clearly it does not do what it needs to do.
* tag 'omap-for-v5.4/fixes-rc4-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
bus: ti-sysc: Fix watchdog quirk handling
ARM: OMAP2+: Add pdata for OMAP3 ISP IOMMU
ARM: OMAP2+: Plug in device_enable/idle ops for IOMMUs
Olof Johansson [Wed, 23 Oct 2019 15:34:08 +0000 (08:34 -0700)]
Merge tag 'sunxi-fixes-for-5.4-1' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into arm/fixes
A number of fixes for this release, but mostly:
- A fixup for the A10 CSI DT binding merged during the 5.4-rc1 window
- A fix for a dt-binding error
- Addition of phy regulator delays
- The PMU on the A64 was found to be non-functional, so we've dropped it for now
* tag 'sunxi-fixes-for-5.4-1' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
ARM: dts: sun7i: Drop the module clock from the device tree
dt-bindings: media: sun4i-csi: Drop the module clock
media: dt-bindings: Fix building error for dt_binding_check
arm64: dts: allwinner: a64: sopine-baseboard: Add PHY regulator delay
arm64: dts: allwinner: a64: Drop PMU node
arm64: dts: allwinner: a64: pine64-plus: Add PHY regulator delay
Yi Wang [Mon, 21 Oct 2019 07:44:12 +0000 (15:44 +0800)]
posix-cpu-timers: Fix two trivial comments
Recent changes modified the function arguments of
thread_group_sample_cputime() and task_cputimers_expired(), but forgot to
update the comments. Fix it up.
[ tglx: Changed the argument name of task_cputimers_expired() as the pointer
points to an array of samples. ]
Fixes: b7be4ef1365d ("posix-cpu-timers: Switch thread group sampling to array") Fixes: 001f7971433a ("posix-cpu-timers: Make expiry checks array based") Signed-off-by: Yi Wang <wang.yi59@zte.com.cn> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/1571643852-21848-1-git-send-email-wang.yi59@zte.com.cn
timers/sched_clock: Include local timekeeping.h for missing declarations
Include the timekeeping.h header to get the declaration of the
sched_clock_{suspend,resume} functions. Fixes the following sparse
warnings:
kernel/time/sched_clock.c:275:5: warning: symbol 'sched_clock_suspend' was not declared. Should it be static?
kernel/time/sched_clock.c:286:6: warning: symbol 'sched_clock_resume' was not declared. Should it be static?
Thomas Gleixner [Mon, 21 Oct 2019 10:07:15 +0000 (12:07 +0200)]
lib/vdso: Make clock_getres() POSIX compliant again
A recent commit removed the NULL pointer check from the clock_getres()
implementation causing a test case to fault.
POSIX requires an explicit NULL pointer check for clock_getres() aside of
the validity check of the clock_id argument for obscure reasons.
Add it back for both 32bit and 64bit.
Note, this is only a partial revert of the offending commit which does not
bring back the broken fallback invocation in the the 32bit compat
implementations of clock_getres() and clock_gettime().
Linus Torvalds [Wed, 23 Oct 2019 10:26:33 +0000 (06:26 -0400)]
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
:Pull ARM fixes from Russell King:
- fix for alignment faults under high memory pressure
- use u32 for ARM instructions in fault handler
- mark functions that must always be inlined with __always_inline
- fix for nommu XIP
- fix ARMv7M switch to handler mode in reboot path
- fix the recently introduced AMBA reset control error paths
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 8926/1: v7m: remove register save to stack before svc
ARM: 8914/1: NOMMU: Fix exc_ret for XIP
ARM: 8908/1: add __always_inline to functions called from __get_user_check()
ARM: mm: alignment: use "u32" for 32-bit instructions
ARM: mm: fix alignment handler faults under memory pressure
drivers/amba: fix reset control error handling
Linus Torvalds [Wed, 23 Oct 2019 10:19:07 +0000 (06:19 -0400)]
Merge tag 'edac_urgent_for_5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC fix from Borislav Petkov:
"Fix ghes_edac UAF case triggered by KASAN and DEBUG_TEST_DRIVER_REMOVE.
Future pending rework of the ghes_edac instances registration will do
away with the single memory controller per system model and that ugly
hackery there.
This is a minimal fix for stable@, courtesy of James Morse"
* tag 'edac_urgent_for_5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/ghes: Fix Use after free in ghes_edac remove path
* tag 'for-5.4-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
Btrfs: check for the full sync flag while holding the inode lock during fsync
Btrfs: fix qgroup double free after failure to reserve metadata for delalloc
btrfs: tracepoints: Fix bad entry members of qgroup events
btrfs: tracepoints: Fix wrong parameter order for qgroup events
btrfs: qgroup: Always free PREALLOC META reserve in btrfs_delalloc_release_extents()
btrfs: don't needlessly create extent-refs kernel thread
btrfs: block-group: Fix a memory leak due to missing btrfs_put_block_group()
Btrfs: add missing extents release on file extent cluster relocation error
Jessica Yu [Mon, 21 Oct 2019 13:34:26 +0000 (15:34 +0200)]
scripts/nsdeps: use alternative sed delimiter
When doing an out of tree build with O=, the nsdeps script constructs
the absolute pathname of the module source file so that it can insert
MODULE_IMPORT_NS statements in the right place. However, ${srctree}
contains an unescaped path to the source tree, which, when used in a sed
substitution, makes sed complain:
++ sed 's/[^ ]* *//home/jeyu/jeyu-linux\/&/g'
sed: -e expression #1, char 12: unknown option to `s'
The sed substitution command 's' ends prematurely with the forward
slashes in the pathname, and sed errors out when it encounters the 'h',
which is an invalid sed substitution option. To avoid escaping forward
slashes ${srctree}, we can use '|' as an alternative delimiter for
sed instead to avoid this error.
Merge branch 'opp/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm
Pull operating performance points (OPP) framework fixes for v5.4
from Viresh Kumar:
"This contains:
- Patch to revert addition of regulator enable/disable in OPP core
(Marek).
- Remove incorrect lockdep assert (Viresh).
- Fix a kref counting issue (Viresh)."
* 'opp/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
opp: Reinitialize the list_kref before adding the static OPPs again
opp: core: Revert "add regulators enable and disable"
opp: of: drop incorrect lockdep_assert_held()
Dan Williams [Mon, 21 Oct 2019 16:29:20 +0000 (09:29 -0700)]
fs/dax: Fix pmd vs pte conflict detection
Users reported a v5.3 performance regression and inability to establish
huge page mappings. A revised version of the ndctl "dax.sh" huge page
unit test identifies commit 23c84eb78375 "dax: Fix missed wakeup with
PMD faults" as the source.
Update get_unlocked_entry() to check for NULL entries before checking
the entry order, otherwise NULL is misinterpreted as a present pte
conflict. The 'order' check needs to happen before the locked check as
an unlocked entry at the wrong order must fallback to lookup the correct
order.
Reported-by: Jeff Smits <jeff.smits@intel.com> Reported-by: Doug Nelson <doug.nelson@intel.com> Cc: <stable@vger.kernel.org> Fixes: 23c84eb78375 ("dax: Fix missed wakeup with PMD faults") Reviewed-by: Jan Kara <jack@suse.cz> Cc: Jeff Moyer <jmoyer@redhat.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Link: https://lore.kernel.org/r/157167532455.3945484.11971474077040503994.stgit@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Viresh Kumar [Fri, 18 Oct 2019 08:41:58 +0000 (14:11 +0530)]
opp: Reinitialize the list_kref before adding the static OPPs again
The list_kref reaches a count of 0 when all the static OPPs are removed,
for example when dev_pm_opp_of_cpumask_remove_table() is called, though
the actual OPP table may not get freed as it may still be referenced by
other parts of the kernel, like from a call to
dev_pm_opp_set_supported_hw(). And if we call
dev_pm_opp_of_cpumask_add_table() again at this point, we must
reinitialize the list_kref otherwise the kernel will hit a WARN() in
kref infrastructure for incrementing a kref with value 0.
Jim Mattson [Tue, 15 Oct 2019 17:44:05 +0000 (10:44 -0700)]
KVM: nVMX: Don't leak L1 MMIO regions to L2
If the "virtualize APIC accesses" VM-execution control is set in the
VMCS, the APIC virtualization hardware is triggered when a page walk
in VMX non-root mode terminates at a PTE wherein the address of the 4k
page frame matches the APIC-access address specified in the VMCS. On
hardware, the APIC-access address may be any valid 4k-aligned physical
address.
KVM's nVMX implementation enforces the additional constraint that the
APIC-access address specified in the vmcs12 must be backed by
a "struct page" in L1. If not, L0 will simply clear the "virtualize
APIC accesses" VM-execution control in the vmcs02.
The problem with this approach is that the L1 guest has arranged the
vmcs12 EPT tables--or shadow page tables, if the "enable EPT"
VM-execution control is clear in the vmcs12--so that the L2 guest
physical address(es)--or L2 guest linear address(es)--that reference
the L2 APIC map to the APIC-access address specified in the
vmcs12. Without the "virtualize APIC accesses" VM-execution control in
the vmcs02, the APIC accesses in the L2 guest will directly access the
APIC-access page in L1.
When there is no mapping whatsoever for the APIC-access address in L1,
the L2 VM just loses the intended APIC virtualization. However, when
the APIC-access address is mapped to an MMIO region in L1, the L2
guest gets direct access to the L1 MMIO device. For example, if the
APIC-access address specified in the vmcs12 is 0xfee00000, then L2
gets direct access to L1's APIC.
Since this vmcs12 configuration is something that KVM cannot
faithfully emulate, the appropriate response is to exit to userspace
with KVM_INTERNAL_ERROR_EMULATION.
Fixes: fe3ef05c7572 ("KVM: nVMX: Prepare vmcs02 from vmcs01 and vmcs12") Reported-by: Dan Cross <dcross@google.com> Signed-off-by: Jim Mattson <jmattson@google.com> Reviewed-by: Peter Shier <pshier@google.com> Reviewed-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Miaohe Lin [Fri, 18 Oct 2019 02:50:31 +0000 (10:50 +0800)]
KVM: SVM: Fix potential wrong physical id in avic_handle_ldr_update
Guest physical APIC ID may not equal to vcpu->vcpu_id in some case.
We may set the wrong physical id in avic_handle_ldr_update as we
always use vcpu->vcpu_id. Get physical APIC ID from vAPIC page
instead.
Export and use kvm_xapic_id here and in avic_handle_apic_id_update
as suggested by Vitaly.
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Sudeep Holla [Fri, 18 Oct 2019 10:58:15 +0000 (11:58 +0100)]
cpufreq: Cancel policy update work scheduled before freeing
Scheduled policy update work may end up racing with the freeing of the
policy and unregistering the driver.
One possible race is as below, where the cpufreq_driver is unregistered,
but the scheduled work gets executed at later stage when, cpufreq_driver
is NULL (i.e. after freeing the policy and driver).
Unable to handle kernel NULL pointer dereference at virtual address 0000001c
pgd = (ptrval)
[0000001c] *pgd=80000080204003, *pmd=00000000
Internal error: Oops: 206 [#1] SMP THUMB2
Modules linked in:
CPU: 0 PID: 34 Comm: kworker/0:1 Not tainted 5.4.0-rc3-00006-g67f5a8081a4b #86
Hardware name: ARM-Versatile Express
Workqueue: events handle_update
PC is at cpufreq_set_policy+0x58/0x228
LR is at dev_pm_qos_read_value+0x77/0xac
Control: 70c5387d Table: 80203000 DAC: fffffffd
Process kworker/0:1 (pid: 34, stack limit = 0x(ptrval))
(cpufreq_set_policy) from (refresh_frequency_limits.part.24+0x37/0x48)
(refresh_frequency_limits.part.24) from (handle_update+0x2f/0x38)
(handle_update) from (process_one_work+0x16d/0x3cc)
(process_one_work) from (worker_thread+0xff/0x414)
(worker_thread) from (kthread+0xff/0x100)
(kthread) from (ret_from_fork+0x11/0x28)
Fixes: 67d874c3b2c6 ("cpufreq: Register notifiers with the PM QoS framework") Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
[ rjw: Cancel the work before dropping the QoS requests ] Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Gerald Schaefer [Mon, 21 Oct 2019 17:56:00 +0000 (19:56 +0200)]
s390/kaslr: add support for R_390_GLOB_DAT relocation type
Commit "bpf: Process in-kernel BTF" in linux-next introduced an undefined
__weak symbol, which results in an R_390_GLOB_DAT relocation type. That
is not yet handled by the KASLR relocation code, and the kernel stops with
the message "Unknown relocation type".
Add code to detect and handle R_390_GLOB_DAT relocation types and undefined
symbols.
projects / mirror_ubuntu-kernels.git / log