Release master that have been previously allocated if the number of
chipselect is invalid.
Fixes: 8e04187c1b ("spi: altera: add SPI core parameters support via platform data.")
Signed-off-by: Pan Bian <bianpan2016@163.com>
Reviewed-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20210120082635.49304-1-bianpan2016@163.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The issue is that using SPI from a callback under the CCF lock will
deadlock, since this code uses clk_get_rate().
Fixes: c474b38665 ("spi: Add driver for Cadence SPI controller")
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210114154217.51996-1-alexandru.ardelean@analog.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Commit 766c6b63aa ("spi: fix client driver breakages when using GPIO
descriptors") broke fsl spi driver.
As now we fully rely on gpiolib for handling the polarity of
chip selects, the driver shall not alter the GPIO value anymore
when SPI_CS_HIGH is not set in spi->mode.
Fixes: 766c6b63aa ("spi: fix client driver breakages when using GPIO descriptors")
Cc: stable@vger.kernel.org
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/6b51cc2bfbca70d3e9b9da7b7aa4c7a9d793ca0e.1610629002.git.christophe.leroy@csgroup.eu
Signed-off-by: Mark Brown <broonie@kernel.org>
- Search for <ncurses.h> in the default header path of HOSTCC
- Tweak the option order to be kind to old BSD awk
- Remove 'kvmconfig' and 'xenconfig' shorthands
- Fix documentation
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Merge tag 'kbuild-fixes-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- Search for <ncurses.h> in the default header path of HOSTCC
- Tweak the option order to be kind to old BSD awk
- Remove 'kvmconfig' and 'xenconfig' shorthands
- Fix documentation
* tag 'kbuild-fixes-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
Documentation: kbuild: Fix section reference
kconfig: remove 'kvmconfig' and 'xenconfig' shorthands
lib/raid6: Let $(UNROLL) rules work with macOS userland
kconfig: Support building mconf with vendor sysroot ncurses
kconfig: config script: add a little user help
MAINTAINERS: adjust GCC PLUGINS after gcc-plugin.sh removal
This is two driver fixes (megaraid_sas and hisi_sas). The megaraid
one is a revert of a previous revert of a cpu hotplug fix which
exposed a bug in the block layer which has been fixed in this merge
window and the hisi_sas performance enhancement comes from switching
to interrupt managed completion queues, which depended on the addition
of devm_platform_get_irqs_affinity() which is now upstream via the irq
tree in the last merge window.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is two driver fixes (megaraid_sas and hisi_sas).
The megaraid one is a revert of a previous revert of a cpu hotplug fix
which exposed a bug in the block layer which has been fixed in this
merge window.
The hisi_sas performance enhancement comes from switching to interrupt
managed completion queues, which depended on the addition of
devm_platform_get_irqs_affinity() which is now upstream via the irq
tree in the last merge window"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: hisi_sas: Expose HW queues for v2 hw
Revert "Revert "scsi: megaraid_sas: Added support for shared host tagset for cpuhotplug""
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Merge tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- Missing CRC32 selections (Arnd)
- Fix for a merge window regression with bdev inode init (Christoph)
- bcache fixes
- rnbd fixes
- NVMe pull request from Christoph:
- fix a race in the nvme-tcp send code (Sagi Grimberg)
- fix a list corruption in an nvme-rdma error path (Israel Rukshin)
- avoid a possible double fetch in nvme-pci (Lalithambika Krishnakumar)
- add the susystem NQN quirk for a Samsung driver (Gopal Tiwari)
- fix two compiler warnings in nvme-fcloop (James Smart)
- don't call sleeping functions from irq context in nvme-fc (James Smart)
- remove an unused argument (Max Gurtovoy)
- remove unused exports (Minwoo Im)
- Use-after-free fix for partition iteration (Ming)
- Missing blk-mq debugfs flag annotation (John)
- Bdev freeze regression fix (Satya)
- blk-iocost NULL pointer deref fix (Tejun)
* tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block: (26 commits)
bcache: set bcache device into read-only mode for BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET
bcache: introduce BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE for large bucket
bcache: check unsupported feature sets for bcache register
bcache: fix typo from SUUP to SUPP in features.h
bcache: set pdev_set_uuid before scond loop iteration
blk-mq-debugfs: Add decode for BLK_MQ_F_TAG_HCTX_SHARED
block/rnbd-clt: avoid module unload race with close confirmation
block/rnbd: Adding name to the Contributors List
block/rnbd-clt: Fix sg table use after free
block/rnbd-srv: Fix use after free in rnbd_srv_sess_dev_force_close
block/rnbd: Select SG_POOL for RNBD_CLIENT
block: pre-initialize struct block_device in bdev_alloc_inode
fs: Fix freeze_bdev()/thaw_bdev() accounting of bd_fsfreeze_sb
nvme: remove the unused status argument from nvme_trace_bio_complete
nvmet-rdma: Fix list_del corruption on queue establishment failure
nvme: unexport functions with no external caller
nvme: avoid possible double fetch in handling CQE
nvme-tcp: Fix possible race of io_work and direct send
nvme-pci: mark Samsung PM1725a as IGNORE_DEV_SUBNQN
nvme-fcloop: Fix sscanf type and list_first_entry_or_null warnings
...
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Merge tag 'io_uring-5.11-2021-01-10' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
"A bit larger than I had hoped at this point, but it's all changes that
will be directed towards stable anyway. In detail:
- Fix a merge window regression on error return (Matthew)
- Remove useless variable declaration/assignment (Ye Bin)
- IOPOLL fixes (Pavel)
- Exit and cancelation fixes (Pavel)
- fasync lockdep complaint fix (Pavel)
- Ensure SQPOLL is synchronized with creator life time (Pavel)"
* tag 'io_uring-5.11-2021-01-10' of git://git.kernel.dk/linux-block:
io_uring: stop SQPOLL submit on creator's death
io_uring: add warn_once for io_uring_flush()
io_uring: inline io_uring_attempt_task_drop()
io_uring: io_rw_reissue lockdep annotations
io_uring: synchronise ev_posted() with waitqueues
io_uring: dont kill fasync under completion_lock
io_uring: trigger eventfd for IOPOLL
io_uring: Fix return value from alloc_fixed_file_ref_node
io_uring: Delete useless variable ‘id’ in io_prep_async_work
io_uring: cancel more aggressively in exit_work
io_uring: drop file refs after task cancel
io_uring: patch up IOPOLL overflow_flush sync
io_uring: synchronise IOPOLL on task_submit fail
Here are a number of small USB driver fixes for 5.11-rc3.
Include in here are:
- USB gadget driver fixes for reported issues
- new usb-serial driver ids
- dma from stack bugfixes
- typec bugfixes
- dwc3 bugfixes
- xhci driver bugfixes
- other small misc usb driver bugfixes
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.11-rc3' 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 5.11-rc3.
Include in here are:
- USB gadget driver fixes for reported issues
- new usb-serial driver ids
- dma from stack bugfixes
- typec bugfixes
- dwc3 bugfixes
- xhci driver bugfixes
- other small misc usb driver bugfixes
All of these have been in linux-next with no reported issues"
* tag 'usb-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (35 commits)
usb: dwc3: gadget: Clear wait flag on dequeue
usb: typec: Send uevent for num_altmodes update
usb: typec: Fix copy paste error for NVIDIA alt-mode description
usb: gadget: enable super speed plus
kcov, usb: hide in_serving_softirq checks in __usb_hcd_giveback_urb
usb: uas: Add PNY USB Portable SSD to unusual_uas
usb: gadget: configfs: Preserve function ordering after bind failure
usb: gadget: select CONFIG_CRC32
usb: gadget: core: change the comment for usb_gadget_connect
usb: gadget: configfs: Fix use-after-free issue with udc_name
usb: dwc3: gadget: Restart DWC3 gadget when enabling pullup
usb: usbip: vhci_hcd: protect shift size
USB: usblp: fix DMA to stack
USB: serial: iuu_phoenix: fix DMA from stack
USB: serial: option: add LongSung M5710 module support
USB: serial: option: add Quectel EM160R-GL
USB: Gadget: dummy-hcd: Fix shift-out-of-bounds bug
usb: gadget: f_uac2: reset wMaxPacketSize
usb: dwc3: ulpi: Fix USB2.0 HS/FS/LS PHY suspend regression
usb: dwc3: ulpi: Replace CPU-based busyloop with Protocol-based one
...
Here are some small staging driver fixes for 5.11-rc3. Nothing major,
just resolving some reported issues:
- cleanup some remaining mentions of the ION drivers that were
removed in 5.11-rc1
- comedi driver bugfix
- 2 error path memory leak fixes
All have been in linux-next for a while with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are some small staging driver fixes for 5.11-rc3. Nothing major,
just resolving some reported issues:
- cleanup some remaining mentions of the ION drivers that were
removed in 5.11-rc1
- comedi driver bugfix
- two error path memory leak fixes
All have been in linux-next for a while with no reported issues"
* tag 'staging-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: ION: remove some references to CONFIG_ION
staging: mt7621-dma: Fix a resource leak in an error handling path
Staging: comedi: Return -EFAULT if copy_to_user() fails
staging: spmi: hisi-spmi-controller: Fix some error handling paths
Here are some small char and misc driver fixes for 5.11-rc3.
the majority here are fixes for the habanalabs drivers, but also in here
are:
- crypto driver fix
- pvpanic driver fix
- updated font file
- interconnect driver fixes
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are some small char and misc driver fixes for 5.11-rc3.
The majority here are fixes for the habanalabs drivers, but also in
here are:
- crypto driver fix
- pvpanic driver fix
- updated font file
- interconnect driver fixes
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (26 commits)
Fonts: font_ter16x32: Update font with new upstream Terminus release
misc: pvpanic: Check devm_ioport_map() for NULL
speakup: Add github repository URL and bug tracker
MAINTAINERS: Update Georgi's email address
crypto: asym_tpm: correct zero out potential secrets
habanalabs: Fix memleak in hl_device_reset
interconnect: imx8mq: Use icc_sync_state
interconnect: imx: Remove a useless test
interconnect: imx: Add a missing of_node_put after of_device_is_available
interconnect: qcom: fix rpmh link failures
habanalabs: fix order of status check
habanalabs: register to pci shutdown callback
habanalabs: add validation cs counter, fix misplaced counters
habanalabs/gaudi: retry loading TPC f/w on -EINTR
habanalabs: adjust pci controller init to new firmware
habanalabs: update comment in hl_boot_if.h
habanalabs/gaudi: enhance reset message
habanalabs: full FW hard reset support
habanalabs/gaudi: disable CGM at HW initialization
habanalabs: Revise comment to align with mirror list name
...
- Address the 2nd boot failure due to snafu in signal handling code
(first was generic console ttynull issue)
- miscll other fixes
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Merge tag 'arc-5.11-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC fixes from Vineet Gupta:
- Address the 2nd boot failure due to snafu in signal handling code
(first was generic console ttynull issue)
- misc other fixes
* tag 'arc-5.11-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARC: [hsdk]: Enable FPU_SAVE_RESTORE
ARC: unbork 5.11 bootup: fix snafu in _TIF_NOTIFY_SIGNAL handling
include/soc: remove headers for EZChip NPS
arch/arc: add copy_user_page() to <asm/page.h> to fix build error on ARC
A fix for machine check handling with VMAP stack on 32-bit.
A clang build fix.
Thanks to:
Christophe Leroy, Nathan Chancellor.
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Merge tag 'powerpc-5.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- A fix for machine check handling with VMAP stack on 32-bit.
- A clang build fix.
Thanks to Christophe Leroy and Nathan Chancellor.
* tag 'powerpc-5.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc: Handle .text.{hot,unlikely}.* in linker script
powerpc/32s: Fix RTAS machine check with VMAP stack
syscalls which take 64-bit arguments to the compat handlers due to
former having a general compat handler. (Brian Gerst)
- Add a forgotten pmd page destructor call to pud_free_pmd_page() where
a pmd page is freed. (Dan Williams)
- Make IN/OUT insns with an u8 immediate port operand handling for
SEV-ES guests more precise by using only the single port byte and not
the whole s32 value of the insn decoder. (Peter Gonda)
- Correct a straddling end range check before returning the proper MTRR
type, when the end address is the same as top of memory. (Ying-Tsun
Huang)
- Change PQR_ASSOC MSR update scheme when moving a task to a resctrl
resource group to avoid significant performance overhead with some
resctrl workloads. (Fenghua Yu)
- Avoid the actual task move overhead when the task is already in the
resource group. (Fenghua Yu)
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Merge tag 'x86_urgent_for_v5.11_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
"As expected, fixes started trickling in after the holidays so here is
the accumulated pile of x86 fixes for 5.11:
- A fix for fanotify_mark() missing the conversion of x86_32 native
syscalls which take 64-bit arguments to the compat handlers due to
former having a general compat handler. (Brian Gerst)
- Add a forgotten pmd page destructor call to pud_free_pmd_page()
where a pmd page is freed. (Dan Williams)
- Make IN/OUT insns with an u8 immediate port operand handling for
SEV-ES guests more precise by using only the single port byte and
not the whole s32 value of the insn decoder. (Peter Gonda)
- Correct a straddling end range check before returning the proper
MTRR type, when the end address is the same as top of memory.
(Ying-Tsun Huang)
- Change PQR_ASSOC MSR update scheme when moving a task to a resctrl
resource group to avoid significant performance overhead with some
resctrl workloads. (Fenghua Yu)
- Avoid the actual task move overhead when the task is already in the
resource group. (Fenghua Yu)"
* tag 'x86_urgent_for_v5.11_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/resctrl: Don't move a task to the same resource group
x86/resctrl: Use an IPI instead of task_work_add() to update PQR_ASSOC MSR
x86/mtrr: Correct the range check before performing MTRR type lookups
x86/sev-es: Fix SEV-ES OUT/IN immediate opcode vc handling
x86/mm: Fix leak of pmd ptlock
fanotify: Fix sys_fanotify_mark() on native x86-32
Bunch of dmaengine driver fixes for:
- coverity discovered issues for xilinx driver
- qcom, gpi driver fix for undefined bhaviour and one off cleanup
- Update Peter's email for TI DMA drivers
- one off for idxd driver
- resource leak fix for mediatek and milbeaut drivers
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Merge tag 'dmaengine-fix-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine fixes from Vinod Koul:
"A bunch of dmaengine driver fixes for:
- coverity discovered issues for xilinx driver
- qcom, gpi driver fix for undefined bhaviour and one off cleanup
- update Peter's email for TI DMA drivers
- one-off for idxd driver
- resource leak fix for mediatek and milbeaut drivers"
* tag 'dmaengine-fix-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
dmaengine: stm32-mdma: fix STM32_MDMA_VERY_HIGH_PRIORITY value
dmaengine: xilinx_dma: fix mixed_enum_type coverity warning
dmaengine: xilinx_dma: fix incompatible param warning in _child_probe()
dmaengine: xilinx_dma: check dma_async_device_register return value
dmaengine: qcom: fix gpi undefined behavior
dt-bindings: dma: ti: Update maintainer and author information
MAINTAINERS: Add entry for Texas Instruments DMA drivers
qcom: bam_dma: Delete useless kfree code
dmaengine: dw-edma: Fix use after free in dw_edma_alloc_chunk()
dmaengine: milbeaut-xdmac: Fix a resource leak in the error handling path of the probe function
dmaengine: mediatek: mtk-hsdma: Fix a resource leak in the error handling path of the probe function
dmaengine: qcom: gpi: Fixes a format mismatch
dmaengine: idxd: off by one in cleanup code
dmaengine: ti: k3-udma: Fix pktdma rchan TPL level setup
Pull i2c fixes from Wolfram Sang:
"Three driver bugfixes for I2C. Buisness as usual"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: mediatek: Fix apdma and i2c hand-shake timeout
i2c: i801: Fix the i2c-mux gpiod_lookup_table not being properly terminated
i2c: sprd: use a specific timeout to avoid system hang up issue
Change my email contact ahead of a likely painful eleven-month migration
to a certain cobalt enteprisey groupware cloud product that will totally
break my workflow. Some day I may get used to having to email being
sequestered behind both claret and cerulean oath2+sms 2fa layers, but
for now I'll stick with keying in one password to receive an email vs.
the required four.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When the creator of SQPOLL io_uring dies (i.e. sqo_task), we don't want
its internals like ->files and ->mm to be poked by the SQPOLL task, it
have never been nice and recently got racy. That can happen when the
owner undergoes destruction and SQPOLL tasks tries to submit new
requests in parallel, and so calls io_sq_thread_acquire*().
That patch halts SQPOLL submissions when sqo_task dies by introducing
sqo_dead flag. Once set, the SQPOLL task must not do any submission,
which is synchronised by uring_lock as well as the new flag.
The tricky part is to make sure that disabling always happens, that
means either the ring is discovered by creator's do_exit() -> cancel,
or if the final close() happens before it's done by the creator. The
last is guaranteed by the fact that for SQPOLL the creator task and only
it holds exactly one file note, so either it pins up to do_exit() or
removed by the creator on the final put in flush. (see comments in
uring_flush() around file->f_count == 2).
One more place that can trigger io_sq_thread_acquire_*() is
__io_req_task_submit(). Shoot off requests on sqo_dead there, even
though actually we don't need to. That's because cancellation of
sqo_task should wait for the request before going any further.
note 1: io_disable_sqo_submit() does io_ring_set_wakeup_flag() so the
caller would enter the ring to get an error, but it still doesn't
guarantee that the flag won't be cleared.
note 2: if final __userspace__ close happens not from the creator
task, the file note will pin the ring until the task dies.
Fixed: b1b6b5a30d ("kernel/io_uring: cancel io_uring before task works")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
files_cancel() should cancel all relevant requests and drop file notes,
so we should never have file notes after that, including on-exit fput
and flush. Add a WARN_ONCE to be sure.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
We expect io_rw_reissue() to take place only during submission with
uring_lock held. Add a lockdep annotation to check that invariant.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
If BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET is set in incompat feature
set, it means the cache device is created with obsoleted layout with
obso_bucket_site_hi. Now bcache does not support this feature bit, a new
BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE incompat feature bit is added
for a better layout to support large bucket size.
For the legacy compatibility purpose, if a cache device created with
obsoleted BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET feature bit, all bcache
devices attached to this cache set should be set to read-only. Then the
dirty data can be written back to backing device before re-create the
cache device with BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE feature bit
by the latest bcache-tools.
This patch checks BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET feature bit
when running a cache set and attach a bcache device to the cache set. If
this bit is set,
- When run a cache set, print an error kernel message to indicate all
following attached bcache device will be read-only.
- When attach a bcache device, print an error kernel message to indicate
the attached bcache device will be read-only, and ask users to update
to latest bcache-tools.
Such change is only for cache device whose bucket size >= 32MB, this is
for the zoned SSD and almost nobody uses such large bucket size at this
moment. If you don't explicit set a large bucket size for a zoned SSD,
such change is totally transparent to your bcache device.
Fixes: ffa4703275 ("bcache: add bucket_size_hi into struct cache_sb_disk for large bucket")
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
When large bucket feature was added, BCH_FEATURE_INCOMPAT_LARGE_BUCKET
was introduced into the incompat feature set. It used bucket_size_hi
(which was added at the tail of struct cache_sb_disk) to extend current
16bit bucket size to 32bit with existing bucket_size in struct
cache_sb_disk.
This is not a good idea, there are two obvious problems,
- Bucket size is always value power of 2, if store log2(bucket size) in
existing bucket_size of struct cache_sb_disk, it is unnecessary to add
bucket_size_hi.
- Macro csum_set() assumes d[SB_JOURNAL_BUCKETS] is the last member in
struct cache_sb_disk, bucket_size_hi was added after d[] which makes
csum_set calculate an unexpected super block checksum.
To fix the above problems, this patch introduces a new incompat feature
bit BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE, when this bit is set, it
means bucket_size in struct cache_sb_disk stores the order of power-of-2
bucket size value. When user specifies a bucket size larger than 32768
sectors, BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE will be set to
incompat feature set, and bucket_size stores log2(bucket size) more
than store the real bucket size value.
The obsoleted BCH_FEATURE_INCOMPAT_LARGE_BUCKET won't be used anymore,
it is renamed to BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET and still only
recognized by kernel driver for legacy compatible purpose. The previous
bucket_size_hi is renmaed to obso_bucket_size_hi in struct cache_sb_disk
and not used in bcache-tools anymore.
For cache device created with BCH_FEATURE_INCOMPAT_LARGE_BUCKET feature,
bcache-tools and kernel driver still recognize the feature string and
display it as "obso_large_bucket".
With this change, the unnecessary extra space extend of bcache on-disk
super block can be avoided, and csum_set() may generate expected check
sum as well.
Fixes: ffa4703275 ("bcache: add bucket_size_hi into struct cache_sb_disk for large bucket")
Signed-off-by: Coly Li <colyli@suse.de>
Cc: stable@vger.kernel.org # 5.9+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This patch adds the check for features which is incompatible for
current supported feature sets.
Now if the bcache device created by bcache-tools has features that
current kernel doesn't support, read_super() will fail with error
messoage. E.g. if an unsupported incompatible feature detected,
bcache register will fail with dmesg "bcache: register_bcache() error :
Unsupported incompatible feature found".
Fixes: d721a43ff6 ("bcache: increase super block version for cache device and backing device")
Fixes: ffa4703275 ("bcache: add bucket_size_hi into struct cache_sb_disk for large bucket")
Signed-off-by: Coly Li <colyli@suse.de>
Cc: stable@vger.kernel.org # 5.9+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This patch fixes the following typos,
from BCH_FEATURE_COMPAT_SUUP to BCH_FEATURE_COMPAT_SUPP
from BCH_FEATURE_INCOMPAT_SUUP to BCH_FEATURE_INCOMPAT_SUPP
from BCH_FEATURE_INCOMPAT_SUUP to BCH_FEATURE_RO_COMPAT_SUPP
Fixes: d721a43ff6 ("bcache: increase super block version for cache device and backing device")
Fixes: ffa4703275 ("bcache: add bucket_size_hi into struct cache_sb_disk for large bucket")
Signed-off-by: Coly Li <colyli@suse.de>
Cc: stable@vger.kernel.org # 5.9+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
There is no need to reassign pdev_set_uuid in the second loop iteration,
so move it to the place before second loop.
Signed-off-by: Yi Li <yili@winhong.com>
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
A single patch from Arnd in this pull request to fix a missing
dependency in zonefs Kconfig.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
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Merge tag 'zonefs-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs
Pull zonefs fix from Damien Le Moal:
"A single patch from Arnd to fix a missing dependency in zonefs
Kconfig"
* tag 'zonefs-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs:
zonefs: select CONFIG_CRC32
This kunit update for Linux 5.11-rc3 consists one fix to force the use
of the 'tty' console for UML. Given that kunit tool requires the console
output, explicitly stating the dependency makes sense than relying on
it being the default.
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Merge tag 'linux-kselftest-kunit-fixes-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kunit fixes from Shuah Khan:
"One fix to force the use of the 'tty' console for UML.
Given that kunit tool requires the console output, explicitly stating
the dependency makes sense than relying on it being the default"
* tag 'linux-kselftest-kunit-fixes-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: tool: Force the use of the 'tty' console for UML
This fixes update for 5.11-rc3 consists of two minor fixes to vDSO test
changes in 5.11-rc1 update.
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Merge tag 'linux-kselftest-next-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest fixes from Shuah Khan:
"Two minor fixes to vDSO test changes in this merge window"
* tag 'linux-kselftest-next-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests/vDSO: fix -Wformat warning in vdso_test_correctness
selftests/vDSO: add additional binaries to .gitignore
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Merge tag 'docs-5.11-3' of git://git.lwn.net/linux
Pull documentation fixes from Jonathan Corbet:
"A handful of relatively small documentation fixes"
* tag 'docs-5.11-3' of git://git.lwn.net/linux:
docs: admin-guide: bootconfig: Fix feils to fails
Documentation/admin-guide: kernel-parameters: hyphenate comma-separated
docs: binfmt-misc: Fix .rst formatting
docs: remove mention of ENABLE_MUST_CHECK
atomic: remove further references to atomic_ops
Documentation: doc-guide: fixes to sphinx.rst
docs/mm: concepts.rst: Correct the threshold to low watermark
Documentation: admin: early_param()s are also listed in kernel-parameters
docs: Fix reST markup when linking to sections
Revert a problematic commit that went in during the 5.10 cycle and
improve the kerneldoc description of the function affected by it (both
changes from Bard Liao).
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Merge tag 'devprop-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull device properties framework fixes from Rafael Wysocki:
"Revert a problematic commit that went in during the 5.10 cycle and
improve the kerneldoc description of the function affected by it (both
changes from Bard Liao)"
* tag 'devprop-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
device property: add description of fwnode cases
Revert "device property: Keep secondary firmware node secondary by type"
- Drop two local variables that are never read and the code updating
their values from the x86 suspend-to-idle code (Rafael Wysocki).
- Add empty stub of an ACPI helper function to avoid build issues
when CONFIG_ACPI is not set (Shawn Guo).
- Remove confusing text regarding modules from Kconfig entries that
correspond to non-modular code (Peter Robinson).
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Merge tag 'acpi-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These address two build issues and drop confusing text from a couple
of Kconfig entries.
Specifics:
- Drop two local variables that are never read and the code updating
their values from the x86 suspend-to-idle code (Rafael Wysocki)
- Add empty stub of an ACPI helper function to avoid build issues
when CONFIG_ACPI is not set (Shawn Guo)
- Remove confusing text regarding modules from Kconfig entries that
correspond to non-modular code (Peter Robinson)"
* tag 'acpi-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: Update Kconfig help text for items that are no longer modular
ACPI: scan: add stub acpi_create_platform_device() for !CONFIG_ACPI
ACPI: PM: s2idle: Drop unused local variables and related code
- Make the powernow-k8 cpufreq driver avoid calling cpufreq_cpu_get(),
which theoretically may return NULL, to get a policy pointer that
is known to it already (Colin Ian King).
- Drop two functions that are not used any more from the intel_pstate
driver (Lukas Bulwahn).
- Make intel_pstate check the HWP capabilities to get the maximum
available P-state in the passive mode to avoid using a stale value
of it in case of out-of-band updates (Rafael Wysocki).
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Merge tag 'pm-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These address two issues in the intel_pstate driver and one in the
powernow-k8 cpufreq driver.
Specifics:
- Make the powernow-k8 cpufreq driver avoid calling
cpufreq_cpu_get(), which theoretically may return NULL, to get a
policy pointer that is known to it already (Colin Ian King)
- Drop two functions that are not used any more from the intel_pstate
driver (Lukas Bulwahn)
- Make intel_pstate check the HWP capabilities to get the maximum
available P-state in the passive mode to avoid using a stale value
of it in case of out-of-band updates (Rafael Wysocki)"
* tag 'pm-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: intel_pstate: remove obsolete functions
cpufreq: powernow-k8: pass policy rather than use cpufreq_cpu_get()
cpufreq: intel_pstate: Use HWP capabilities in intel_cpufreq_adjust_perf()
- fix for ttm list corruption in radeon, reported by a few people
- fixes for amdgpu, i915, msm
- dma-buf use-after free fix
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Merge tag 'drm-fixes-2021-01-08' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Daniel Vetter:
"Looks like people are back from the break, usual small pile of fixes
all over. Next week Dave should be back.
The only thing pending I'm aware of is a "this shouldn't have become
uapi" reverts for amdgpu, but they're already on the list and not that
important really so can wait another week.
Summary:
- fix for ttm list corruption in radeon, reported by a few people
- fixes for amdgpu, i915, msm
- dma-buf use-after free fix"
* tag 'drm-fixes-2021-01-08' of git://anongit.freedesktop.org/drm/drm: (29 commits)
drm/msm: Only enable A6xx LLCC code on A6xx
drm/msm: Add modparam to allow vram carveout
drm/msm: Call msm_init_vram before binding the gpu
drm/msm/dp: postpone irq_hpd event during connection pending state
drm/ttm: unexport ttm_pool_init/fini
drm/radeon: stop re-init the TTM page pool
dmabuf: fix use-after-free of dmabuf's file->f_inode
Revert "drm/amd/display: Fix memory leaks in S3 resume"
drm/amdgpu/display: drop DCN support for aarch64
drm/amdgpu: enable ras eeprom support for sienna cichlid
drm/amdgpu: fix no bad_pages issue after umc ue injection
drm/amdgpu: fix potential memory leak during navi12 deinitialization
drm/amd/display: Fix unused variable warning
drm/amd/pm: improve the fine grain tuning function for RV/RV2/PCO
drm/amd/pm: fix the failure when change power profile for renoir
drm/amdgpu: fix a GPU hang issue when remove device
drm/amdgpu: fix a memory protection fault when remove amdgpu device
drm/amdgpu: switched to cached noretry setting for vangogh
drm/amd/display: fix sysfs amdgpu_current_backlight_pwm NULL pointer issue
drm/amd/pm: updated PM to I2C controller port on sienna cichlid
...
* Fixes for the new scalable MMU
* Fixes for migration of nested hypervisors on AMD
* Fix for clang integrated assembler
* Fix for left shift by 64 (UBSAN)
* Small cleanups
* Straggler SEV-ES patch
ARM:
* VM init cleanups
* PSCI relay cleanups
* Kill CONFIG_KVM_ARM_PMU
* Fixup __init annotations
* Fixup reg_to_encoding()
* Fix spurious PMCR_EL0 access
* selftests cleanups
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"x86:
- Fixes for the new scalable MMU
- Fixes for migration of nested hypervisors on AMD
- Fix for clang integrated assembler
- Fix for left shift by 64 (UBSAN)
- Small cleanups
- Straggler SEV-ES patch
ARM:
- VM init cleanups
- PSCI relay cleanups
- Kill CONFIG_KVM_ARM_PMU
- Fixup __init annotations
- Fixup reg_to_encoding()
- Fix spurious PMCR_EL0 access
Misc:
- selftests cleanups"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (38 commits)
KVM: x86: __kvm_vcpu_halt can be static
KVM: SVM: Add support for booting APs in an SEV-ES guest
KVM: nSVM: cancel KVM_REQ_GET_NESTED_STATE_PAGES on nested vmexit
KVM: nSVM: mark vmcb as dirty when forcingly leaving the guest mode
KVM: nSVM: correctly restore nested_run_pending on migration
KVM: x86/mmu: Clarify TDP MMU page list invariants
KVM: x86/mmu: Ensure TDP MMU roots are freed after yield
kvm: check tlbs_dirty directly
KVM: x86: change in pv_eoi_get_pending() to make code more readable
MAINTAINERS: Really update email address for Sean Christopherson
KVM: x86: fix shift out of bounds reported by UBSAN
KVM: selftests: Implement perf_test_util more conventionally
KVM: selftests: Use vm_create_with_vcpus in create_vm
KVM: selftests: Factor out guest mode code
KVM/SVM: Remove leftover __svm_vcpu_run prototype from svm.c
KVM: SVM: Add register operand to vmsave call in sev_es_vcpu_load
KVM: x86/mmu: Optimize not-present/MMIO SPTE check in get_mmio_spte()
KVM: x86/mmu: Use raw level to index into MMIO walks' sptes array
KVM: x86/mmu: Get root level from walkers when retrieving MMIO SPTE
KVM: x86/mmu: Use -1 to flag an undefined spte in get_mmio_spte()
...
- Fix VT-D TLB invalidation for subdevices
- Fix VT-D use-after-free on subdevice detach
- Fix VT-D locking so that IRQs are disabled during SVA bind/unbind
- Fix VT-D address alignment when flushing IOTLB
- Fix memory leak in VT-D IRQ remapping failure path
- Revert temporary i915 sglist hack now that it is no longer required
- Fix sporadic boot failure with Arm SMMU on Qualcomm SM8150
- Fix NULL dereference in AMD IRQ remapping code with remapping disabled
- Fix accidental enabling of irqs on AMD resume-from-suspend path
- Fix some typos in comments
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Merge tag 'iommu-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull iommu fixes from Will Deacon:
"This is mainly all Intel VT-D stuff, but there are some fixes for AMD
and ARM as well.
We've also got the revert I promised during the merge window, which
removes a temporary hack to accomodate i915 while we transitioned the
Intel IOMMU driver over to the common DMA-IOMMU API.
Finally, there are still a couple of other VT-D fixes floating around,
so I expect to send you another batch of fixes next week.
Summary:
- Fix VT-D TLB invalidation for subdevices
- Fix VT-D use-after-free on subdevice detach
- Fix VT-D locking so that IRQs are disabled during SVA bind/unbind
- Fix VT-D address alignment when flushing IOTLB
- Fix memory leak in VT-D IRQ remapping failure path
- Revert temporary i915 sglist hack now that it is no longer required
- Fix sporadic boot failure with Arm SMMU on Qualcomm SM8150
- Fix NULL dereference in AMD IRQ remapping code with remapping disabled
- Fix accidental enabling of irqs on AMD resume-from-suspend path
- Fix some typos in comments"
* tag 'iommu-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
iommu/vt-d: Fix ineffective devTLB invalidation for subdevices
iommu/vt-d: Fix general protection fault in aux_detach_device()
iommu/vt-d: Move intel_iommu info from struct intel_svm to struct intel_svm_dev
iommu/arm-smmu-qcom: Initialize SCTLR of the bypass context
iommu/vt-d: Fix lockdep splat in sva bind()/unbind()
Revert "iommu: Add quirk for Intel graphic devices in map_sg"
iommu/vt-d: Fix misuse of ALIGN in qi_flush_piotlb()
iommu/amd: Stop irq_remapping_select() matching when remapping is disabled
iommu/amd: Set iommu->int_enabled consistently when interrupts are set up
iommu/intel: Fix memleak in intel_irq_remapping_alloc
iommu/iova: fix 'domain' typos
These are a small number of bug fixes that all came in before or during
the merge window, most for the omap platform:
- One boot regression fix for Nokia N9 (OMAP3).
- Two small defconfig changes for omap2, to reflect changes in drivers
- Warning fixes for DT issues on omap2, picoxcell and bitmap SoCs.
The picoxcell platform will be removed in v5.12, but fixing it
first makes it easier to backport to the fix to stable kernels
and get a clean build with new dtc versions
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'arm-fixes-5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"These are a small number of bug fixes that all came in before or
during the merge window, most for the omap platform:
- One boot regression fix for Nokia N9 (OMAP3).
- Two small defconfig changes for omap2, to reflect changes in
drivers
- Warning fixes for DT issues on omap2, picoxcell and bitmap SoCs.
The picoxcell platform will be removed in v5.12, but fixing it
first makes it easier to backport to the fix to stable kernels and
get a clean build with new dtc versions"
* tag 'arm-fixes-5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
ARM: picoxcell: fix missing interrupt-parent properties
ARM: dts: ux500/golden: Set display max brightness
arm64: dts: bitmain: Use generic "ngpios" rather than "snps,nr-gpios"
ARM: omap2: pmic-cpcap: fix maximum voltage to be consistent with defaults on xt875
ARM: omap2plus_defconfig: enable SPI GPIO
ARM: OMAP2+: omap_device: fix idling of devices during probe
ARM: dts: OMAP3: disable AES on N950/N9
ARM: omap2plus_defconfig: drop unused POWER_AVS option
- Clean-ups following the merging window: remove unused variable,
duplicate includes, superfluous barrier, move some inline asm to
separate functions.
- Disable top-byte-ignore on kernel code addresses with KASAN/MTE
enabled (already done when MTE is disabled).
- Fix ARCH_LOW_ADDRESS_LIMIT definition with CONFIG_ZONE_DMA disabled.
- Compiler/linker flags: link with "-z norelno", discard .eh_frame_hdr
instead of --no-eh-frame-hdr.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Clean-ups following the merging window: remove unused variable,
duplicate includes, superfluous barrier, move some inline asm to
separate functions.
- Disable top-byte-ignore on kernel code addresses with KASAN/MTE
enabled (already done when MTE is disabled).
- Fix ARCH_LOW_ADDRESS_LIMIT definition with CONFIG_ZONE_DMA disabled.
- Compiler/linker flags: link with "-z norelno", discard .eh_frame_hdr
instead of --no-eh-frame-hdr.
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Move PSTATE.TCO setting to separate functions
arm64: kasan: Set TCR_EL1.TBID1 when KASAN_HW_TAGS is enabled
arm64: vdso: disable .eh_frame_hdr via /DISCARD/ instead of --no-eh-frame-hdr
arm64: traps: remove duplicate include statement
arm64: link with -z norelro for LLD or aarch64-elf
arm64: mm: Fix ARCH_LOW_ADDRESS_LIMIT when !CONFIG_ZONE_DMA
arm64: mte: remove an ISB on kernel exit
arm64/smp: Remove unused irq variable in arch_show_interrupts()
can trees.
Current release - always broken:
- can: mcp251xfd: fix Tx/Rx ring buffer driver race conditions
- dsa: hellcreek: fix led_classdev build errors
Previous releases - regressions:
- ipv6: fib: flush exceptions when purging route to avoid netdev
reference leak
- ip_tunnels: fix pmtu check in nopmtudisc mode
- ip: always refragment ip defragmented packets to avoid MTU issues
when forwarding through tunnels, correct "packet too big"
message is prohibitively tricky to generate
- s390/qeth: fix locking for discipline setup / removal and during
recovery to prevent both deadlocks and races
- mlx5: Use port_num 1 instead of 0 when delete a RoCE address
Previous releases - always broken:
- cdc_ncm: correct overhead calculation in delayed_ndp_size to prevent
out of bound accesses with Huawei 909s-120 LTE module
- stmmac: dwmac-sun8i: fix suspend/resume:
- PHY being left powered off
- MAC syscon configuration being reset
- reference to the reset controller being improperly dropped
- qrtr: fix null-ptr-deref in qrtr_ns_remove
- can: tcan4x5x: fix bittiming const, use common bittiming from m_can
driver
- mlx5e: CT: Use per flow counter when CT flow accounting is enabled
- mlx5e: Fix SWP offsets when vlan inserted by driver
Misc:
- bpf: Fix a task_iter bug caused by a bpf -> net merge conflict
resolution
And the usual many fixes to various error paths.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.11-rc3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull more networking fixes from Jakub Kicinski:
"Slightly lighter pull request to get back into the Thursday cadence.
Current release - always broken:
- can: mcp251xfd: fix Tx/Rx ring buffer driver race conditions
- dsa: hellcreek: fix led_classdev build errors
Previous releases - regressions:
- ipv6: fib: flush exceptions when purging route to avoid netdev
reference leak
- ip_tunnels: fix pmtu check in nopmtudisc mode
- ip: always refragment ip defragmented packets to avoid MTU issues
when forwarding through tunnels, correct "packet too big" message
is prohibitively tricky to generate
- s390/qeth: fix locking for discipline setup / removal and during
recovery to prevent both deadlocks and races
- mlx5: Use port_num 1 instead of 0 when delete a RoCE address
Previous releases - always broken:
- cdc_ncm: correct overhead calculation in delayed_ndp_size to
prevent out of bound accesses with Huawei 909s-120 LTE module
- fix stmmac dwmac-sun8i suspend/resume:
- PHY being left powered off
- MAC syscon configuration being reset
- reference to the reset controller being improperly dropped
- qrtr: fix null-ptr-deref in qrtr_ns_remove
- can: tcan4x5x: fix bittiming const, use common bittiming from m_can
driver
- mlx5e: CT: Use per flow counter when CT flow accounting is enabled
- mlx5e: Fix SWP offsets when vlan inserted by driver
Misc:
- bpf: Fix a task_iter bug caused by a bpf -> net merge conflict
resolution
And the usual many fixes to various error paths"
* tag 'net-5.11-rc3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (69 commits)
net: dsa: lantiq_gswip: Exclude RMII from modes that report 1 GbE
s390/qeth: fix L2 header access in qeth_l3_osa_features_check()
s390/qeth: fix locking for discipline setup / removal
s390/qeth: fix deadlock during recovery
selftests: fib_nexthops: Fix wrong mausezahn invocation
nexthop: Bounce NHA_GATEWAY in FDB nexthop groups
nexthop: Unlink nexthop group entry in error path
nexthop: Fix off-by-one error in error path
octeontx2-af: fix memory leak of lmac and lmac->name
chtls: Fix chtls resources release sequence
chtls: Added a check to avoid NULL pointer dereference
chtls: Replace skb_dequeue with skb_peek
chtls: Avoid unnecessary freeing of oreq pointer
chtls: Fix panic when route to peer not configured
chtls: Remove invalid set_tcb call
chtls: Fix hardware tid leak
net: ip: always refragment ip defragmented packets
net: fix pmtu check in nopmtudisc mode
selftests: netfilter: add selftest for ipip pmtu discovery with enabled connection tracking
docs: octeontx2: tune rst markup
...
Pull crypto fixes from Herbert Xu:
"This fixes a functional bug in arm/chacha-neon as well as a potential
buffer overflow in ecdh"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: ecdh - avoid buffer overflow in ecdh_set_secret()
crypto: arm/chacha-neon - add missing counter increment
The kernel test robot reported a -5.8% performance regression on the
"poll2" test of will-it-scale, and bisected it to commit d55564cfc2
("x86: Make __put_user() generate an out-of-line call").
I didn't expect an out-of-line __put_user() to matter, because no normal
core code should use that non-checking legacy version of user access any
more. But I had overlooked the very odd poll() usage, which does a
__put_user() to update the 'revents' values of the poll array.
Now, Al Viro correctly points out that instead of updating just the
'revents' field, it would be much simpler to just copy the _whole_
pollfd entry, and then we could just use "copy_to_user()" on the whole
array of entries, the same way we use "copy_from_user()" a few lines
earlier to get the original values.
But that is not what we've traditionally done, and I worry that threaded
applications might be concurrently modifying the other fields of the
pollfd array. So while Al's suggestion is simpler - and perhaps worth
trying in the future - this instead keeps the "just update revents"
model.
To fix the performance regression, use the modern "unsafe_put_user()"
instead of __put_user(), with the proper "user_write_access_begin()"
guarding in place. This improves code generation enormously.
Link: https://lore.kernel.org/lkml/20210107134723.GA28532@xsang-OptiPlex-9020/
Reported-by: kernel test robot <oliver.sang@intel.com>
Tested-by: Oliver Sang <oliver.sang@intel.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: David Laight <David.Laight@aculab.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This reverts commit 757055ae8d.
The commit caused that ttynull was used as the default console
on several systems[1][2][3]. As a result, the console was
blank even when a better alternative existed.
It happened when there was no console configured
on the command line and ttynull_init() was the first initcall
calling register_console().
Or it happened when /dev/ did not exist when console_on_rootfs()
was called. It was not able to open /dev/console even though
a console driver was registered. It tried to add ttynull console
but it obviously did not help. But ttynull became the preferred
console and was used by /dev/console when it was available later.
The commit tried to fix a historical problem that have been there
for ages. The primary motivation was the commit 3cffa06aee
("printk/console: Allow to disable console output by using console=""
or console=null"). It provided a clean solution for a workaround
that was widely used and worked only by chance.
This revert causes that the console="" or console=null command line
options will again work only by chance. These options will cause that
a particular console will be preferred and the default (tty) ones
will not get enabled. There will be no console registered at
all. As a result there won't be stdin, stdout, and stderr for
the init process. But it worked exactly this way even before.
The proper solution has to fulfill many conditions:
+ Register ttynull only when explicitly required or as
the ultimate fallback.
+ ttynull should get associated with /dev/console but it must
not become preferred console when used as a fallback.
Especially, it must still be possible to replace it
by a better console later.
Such a change requires clean up of the register_console() code.
Otherwise, it would be even harder to follow. Especially, the use
of has_preferred_console and CON_CONSDEV flag is tricky. The clean
up is risky. The ordering of consoles is not well defined. And
any changes tend to break existing user settings.
Do the revert at the least risky solution for now.
[1] https://lore.kernel.org/linux-kselftest/20201221144302.GR4077@smile.fi.intel.com/
[2] https://lore.kernel.org/lkml/d2a3b3c0-e548-7dd1-730f-59bc5c04e191@synopsys.com/
[3] https://patchwork.ozlabs.org/project/linux-um/patch/20210105120128.10854-1-thomas@m3y3r.de/
Reported-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reported-by: Vineet Gupta <vgupta@synopsys.com>
Reported-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* acpi-scan:
ACPI: scan: add stub acpi_create_platform_device() for !CONFIG_ACPI
* acpi-misc:
ACPI: Update Kconfig help text for items that are no longer modular
hwmon, specifically hwmon_num_channel_attrs, expects the config
array in the hwmon_channel_info structure to be terminated by
a zero entry. amd_energy does not honor this convention. As
result, a KASAN warning is possible. Fix this by adding an
additional entry and setting it to zero.
Fixes: 8abee9566b ("hwmon: Add amd_energy driver to report energy counters")
Signed-off-by: David Arcari <darcari@redhat.com>
Cc: Naveen Krishna Chatradhi <nchatrad@amd.com>
Cc: Jean Delvare <jdelvare@suse.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: linux-kernel@vger.kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: David Arcari <darcari@redhat.com>
Acked-by: Naveen Krishna Chatradhi <nchatrad@amd.com>
Link: https://lore.kernel.org/r/20210107144707.6927-1-darcari@redhat.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
dtc points out that the interrupts for some devices are not parsable:
picoxcell-pc3x2.dtsi:45.19-49.5: Warning (interrupts_property): /paxi/gem@30000: Missing interrupt-parent
picoxcell-pc3x2.dtsi:51.21-55.5: Warning (interrupts_property): /paxi/dmac@40000: Missing interrupt-parent
picoxcell-pc3x2.dtsi:57.21-61.5: Warning (interrupts_property): /paxi/dmac@50000: Missing interrupt-parent
picoxcell-pc3x2.dtsi:233.21-237.5: Warning (interrupts_property): /rwid-axi/axi2pico@c0000000: Missing interrupt-parent
There are two VIC instances, so it's not clear which one needs to be
used. I found the BSP sources that reference VIC0, so use that:
https://github.com/r1mikey/meta-picoxcell/blob/master/recipes-kernel/linux/linux-picochip-3.0/0001-picoxcell-support-for-Picochip-picoXcell-SoC.patch
Acked-by: Jamie Iles <jamie@jamieiles.com>
Link: https://lore.kernel.org/r/20201230152010.3914962-1-arnd@kernel.org'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Showing the hctx flags for when BLK_MQ_F_TAG_HCTX_SHARED is set gives
something like:
root@debian:/home/john# more /sys/kernel/debug/block/sda/hctx0/flags
alloc_policy=FIFO SHOULD_MERGE|TAG_QUEUE_SHARED|3
Add the decoding for that flag.
Fixes: 32bc15afed ("blk-mq: Facilitate a shared sbitmap per tagset")
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
