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- 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
If we exit _lgopen_prepare_attached() without setting a layout, we will
currently leak the plh_outstanding counter.
Fixes: 411ae722d1 ("pNFS: Wait for stale layoutget calls to complete in pnfs_update_layout()")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
We must ensure that we pass a layout segment to nfs_retry_commit() when
we're cleaning up after pnfs_bucket_alloc_ds_commits(). Otherwise,
requests that should be committed to the DS will get committed to the
MDS.
Do so by ensuring that pnfs_bucket_get_committing() always tries to
return a layout segment when it returns a non-empty page list.
Fixes: c84bea5944 ("NFS/pNFS: Simplify bucket layout segment reference counting")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
In pnfs_generic_clear_request_commit(), we try calling
pnfs_free_bucket_lseg() before we remove the request from the DS bucket.
That will always fail, since the point is to test for whether or not
that bucket is empty.
Fixes: c84bea5944 ("NFS/pNFS: Simplify bucket layout segment reference counting")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
If a layout return is in progress, we should wait for it to complete,
in case the layout segment we are picking up gets returned too.
Fixes: 30cb3ee299 ("pNFS: Handle NFS4ERR_OLD_STATEID on layoutreturn by bumping the state seqid")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
If the inode is being evicted, it should be safe to run return-on-close,
so we should do it to ensure we don't inadvertently leak layout segments.
Fixes: 1c5bd76d17 ("pNFS: Enable layoutreturn operation for return-on-close")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
If the layout return-on-close failed because the layoutreturn was never
sent, then we should mark the layout for return again.
Fixes: 9c47b18cf7 ("pNFS: Ensure we do clear the return-on-close layout stateid on fatal errors")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
A return value of 0 means success. This is documented in lib/kstrtox.c.
This was found by trying to mount an NFS share from a link-local IPv6
address with the interface specified by its index:
mount("[fe80::1%1]:/srv/nfs", "/mnt", "nfs", 0, "nolock,addr=fe80::1%1")
Before this commit this failed with EINVAL and also caused the following
message in dmesg:
[...] NFS: bad IP address specified: addr=fe80::1%1
The syscall using the same address based on the interface name instead
of its index succeeds.
Credits for this patch go to my colleague Christian Speich, who traced
the origin of this bug to this line of code.
Signed-off-by: Johannes Nixdorf <j.nixdorf@avm.de>
Fixes: 00cfaa943e ("replace strict_strto calls")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Several existing dprink()/dfprintk() calls were converted to use the new
mount API logging macros by commit ce8866f091 ("NFS: Attach
supplementary error information to fs_context"). If the fs_context was
not created using fsopen() then it will not have had a log buffer
allocated for it, and the new mount API logging macros will wind up
calling printk().
This can result in syslog messages being logged where previously there
were none... most notably "NFS4: Couldn't follow remote path", which can
happen if the client is auto-negotiating a protocol version with an NFS
server that doesn't support the higher v4.x versions.
Convert the nfs_errorf(), nfs_invalf(), and nfs_warnf() macros to check
for the existence of the fs_context's log buffer and call dprintk() if
it doesn't exist. Add nfs_ferrorf(), nfs_finvalf(), and nfs_warnf(),
which do the same thing but take an NFS debug flag as an argument and
call dfprintk(). Finally, modify the "NFS4: Couldn't follow remote
path" message to use nfs_ferrorf().
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=207385
Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
Fixes: ce8866f091 ("NFS: Attach supplementary error information to fs_context.")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Bing Song noticed the CMA heap was leaking memory due to a flub
I made in commit a5d2d29e24 ("dma-buf: heaps: Move heap-helper
logic into the cma_heap implementation"), and provided this fix
which ensures the pagelist is also freed on release.
Cc: Bing Song <bing.song@nxp.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Liam Mark <lmark@codeaurora.org>
Cc: Laura Abbott <labbott@kernel.org>
Cc: Brian Starkey <Brian.Starkey@arm.com>
Cc: Hridya Valsaraju <hridya@google.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Sandeep Patil <sspatil@google.com>
Cc: Daniel Mentz <danielmentz@google.com>
Cc: Chris Goldsworthy <cgoldswo@codeaurora.org>
Cc: Ørjan Eide <orjan.eide@arm.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Ezequiel Garcia <ezequiel@collabora.com>
Cc: Simon Ser <contact@emersion.fr>
Cc: James Jones <jajones@nvidia.com>
Cc: linux-media@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Reported-by: Bing Song <bing.song@nxp.com>
Fixes: a5d2d29e24 ("dma-buf: heaps: Move heap-helper logic into the cma_heap implementation")
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210107202616.75170-1-john.stultz@linaro.org
The old way of changing the conntrack hashsize runtime was through changing
the module param via file /sys/module/nf_conntrack/parameters/hashsize. This
was extended to sysctl change in commit 3183ab8997 ("netfilter: conntrack:
allow increasing bucket size via sysctl too").
The commit introduced second "user" variable nf_conntrack_htable_size_user
which shadow actual variable nf_conntrack_htable_size. When hashsize is
changed via module param this "user" variable isn't updated. This results in
sysctl net/netfilter/nf_conntrack_buckets shows the wrong value when users
update via the old way.
This patch fix the issue by always updating "user" variable when reading the
proc file. This will take care of changes to the actual variable without
sysctl need to be aware.
Fixes: 3183ab8997 ("netfilter: conntrack: allow increasing bucket size via sysctl too")
Reported-by: Yoel Caspersen <yoel@kviknet.dk>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Fix nft_conntrack_helper.sh false fail report:
1) Conntrack tool need "-f ipv6" parameter to show out ipv6 traffic items.
2) Sleep 1 second after background nc send packet, to make sure check
is after this statement executed.
False report:
FAIL: ns1-lkjUemYw did not show attached helper ip set via ruleset
PASS: ns1-lkjUemYw connection on port 2121 has ftp helper attached
...
After fix:
PASS: ns1-2hUniwU2 connection on port 2121 has ftp helper attached
PASS: ns2-2hUniwU2 connection on port 2121 has ftp helper attached
...
Fixes: 619ae8e069 ("selftests: netfilter: add test case for conntrack helper assignment")
Signed-off-by: Chen Yi <yiche@redhat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
The merge resolution of the interaction of commits 307eea32b2
("dt-bindings: net: renesas,ravb: Add support for r8a774e1 SoC") and
d7adf63311 ("dt-bindings: net: renesas,etheravb: Convert to
json-schema") missed that "tx-internal-delay-ps" should be a required
property on RZ/G2H.
Fixes: 8b0308fe31 ("Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20210105151516.1540653-1-geert+renesas@glider.be
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Ido Schimmel says:
====================
mlxsw: core: Thermal control fixes
This series includes two fixes for thermal control in mlxsw.
Patch #1 validates that the alarm temperature threshold read from a
transceiver is above the warning temperature threshold. If not, the
current thresholds are maintained. It was observed that some transceiver
might be unreliable and sometimes report a too low alarm temperature
threshold which would result in thermal shutdown of the system.
Patch #2 increases the temperature threshold above which thermal
shutdown is triggered for the ASIC thermal zone. It is currently too low
and might result in thermal shutdown under perfectly fine operational
conditions.
====================
Link: https://lore.kernel.org/r/20210108145210.1229820-1-idosch@idosch.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Increase critical threshold for ASIC thermal zone from 110C to 140C
according to the system hardware requirements. All the supported ASICs
(Spectrum-1, Spectrum-2, Spectrum-3) could be still operational with ASIC
temperature below 140C. With the old critical threshold value system
can perform unjustified shutdown.
All the systems equipped with the above ASICs implement thermal
protection mechanism at firmware level and firmware could decide to
perform system thermal shutdown in case the temperature is below 140C.
So with the new threshold system will not meltdown, while thermal
operating range will be aligned with hardware abilities.
Fixes: 41e760841d ("mlxsw: core: Replace thermal temperature trips with defines")
Fixes: a50c1e3565 ("mlxsw: core: Implement thermal zone")
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Validate thresholds to avoid a single failure due to some transceiver
unreliability. Ignore the last readouts in case warning temperature is
above alarm temperature, since it can cause unexpected thermal
shutdown. Stay with the previous values and refresh threshold within
the next iteration.
This is a rare scenario, but it was observed at a customer site.
Fixes: 6a79507cfe ("mlxsw: core: Extend thermal module with per QSFP module thermal zones")
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
TLS selftests where broken because of wrong variable types used.
Fix it by changing u16 -> uint16_t
Fixes: 4f336e88a8 ("selftests/tls: add CHACHA20-POLY1305 to tls selftests")
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Vadim Fedorenko <vfedorenko@novek.ru>
Link: https://lore.kernel.org/r/1610141865-7142-1-git-send-email-vfedorenko@novek.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
There are cases where GSO segment's length exceeds the egress MTU:
- Forwarding of a TCP GRO skb, when DF flag is not set.
- Forwarding of an skb that arrived on a virtualisation interface
(virtio-net/vhost/tap) with TSO/GSO size set by other network
stack.
- Local GSO skb transmitted on an NETIF_F_TSO tunnel stacked over an
interface with a smaller MTU.
- Arriving GRO skb (or GSO skb in a virtualised environment) that is
bridged to a NETIF_F_TSO tunnel stacked over an interface with an
insufficient MTU.
If so:
- Consume the SKB and its segments.
- Issue an ICMP packet with 'Packet Too Big' message containing the
MTU, allowing the source host to reduce its Path MTU appropriately.
Note: These cases are handled in the same manner in IPv4 output finish.
This patch aligns the behavior of IPv6 and the one of IPv4.
Fixes: 9e50849054 ("netfilter: ipv6: move POSTROUTING invocation before fragmentation")
Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/1610027418-30438-1-git-send-email-ayal@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
For all PCI functions on the netxen_nic adapter, interrupt
mode (INTx or MSI) configuration is dependent on what has
been configured by the PCI function zero in the shared
interrupt register, as these adapters do not support mixed
mode interrupts among the functions of a given adapter.
Logic for setting MSI/MSI-x interrupt mode in the shared interrupt
register based on PCI function id zero check is not appropriate for
all family of netxen adapters, as for some of the netxen family
adapters PCI function zero is not really meant to be probed/loaded
in the host but rather just act as a management function on the device,
which caused all the other PCI functions on the adapter to always use
legacy interrupt (INTx) mode instead of choosing MSI/MSI-x interrupt mode.
This patch replaces that check with port number so that for all
type of adapters driver attempts for MSI/MSI-x interrupt modes.
Fixes: b37eb210c0 ("netxen_nic: Avoid mixed mode interrupts")
Signed-off-by: Manish Chopra <manishc@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Link: https://lore.kernel.org/r/20210107101520.6735-1-manishc@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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>
Jakub Kicinski says:
====================
net: fix issues around register_netdevice() failures
This series attempts to clean up the life cycle of struct
net_device. Dave has added dev->needs_free_netdev in the
past to fix double frees, we can lean on that mechanism
a little more to fix remaining issues with register_netdevice().
This is the next chapter of the saga which already includes:
commit 0e0eee2465 ("net: correct error path in rtnl_newlink()")
commit e51fb15231 ("rtnetlink: fix a memory leak when ->newlink fails")
commit cf124db566 ("net: Fix inconsistent teardown and release of private netdev state.")
commit 93ee31f14f ("[NET]: Fix free_netdev on register_netdev failure.")
commit 814152a89e ("net: fix memleak in register_netdevice()")
commit 10cc514f45 ("net: Fix null de-reference of device refcount")
The immediate problem which gets fixed here is that calling
free_netdev() right after unregister_netdevice() is illegal
because we need to release rtnl_lock first, to let the
unregistration finish. Note that unregister_netdevice() is
just a wrapper of unregister_netdevice_queue(), it only
does half of the job.
Where this limitation becomes most problematic is in failure
modes of register_netdevice(). There is a notifier call right
at the end of it, which lets other subsystems veto the entire
thing. At which point we should really go through a full
unregister_netdevice(), but we can't because callers may
go straight to free_netdev() after the failure, and that's
no bueno (see the previous paragraph).
This set makes free_netdev() more lenient, when device
is still being unregistered free_netdev() will simply set
dev->needs_free_netdev and let the unregister process do
the freeing.
With the free_netdev() problem out of the way failures in
register_netdevice() can make use of net_todo, again.
Users are still expected to call free_netdev() right after
failure but that will only set dev->needs_free_netdev.
To prevent the pathological case of:
dev->needs_free_netdev = true;
if (register_netdevice(dev)) {
rtnl_unlock();
free_netdev(dev);
}
make register_netdevice()'s failure clear dev->needs_free_netdev.
Problems described above are only present with register_netdevice() /
unregister_netdevice(). We have two parallel APIs for registration
of devices:
- those called outside rtnl_lock (register_netdev(), and
unregister_netdev());
- and those to be used under rtnl_lock - register_netdevice()
and unregister_netdevice().
The former is trivial and has no problems. The alternative
approach to fix the latter would be to also separate the
freeing functions - i.e. add free_netdevice(). This has been
implemented (incl. converting all relevant calls in the tree)
but it feels a little unnecessary to put the burden of choosing
the right free_netdev{,ice}() call on the programmer when we
can "just do the right thing" by default.
====================
Link: https://lore.kernel.org/r/20210106184007.1821480-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
If register_netdevice() fails at the very last stage - the
notifier call - some subsystems may have already seen it and
grabbed a reference. struct net_device can't be freed right
away without calling netdev_wait_all_refs().
Now that we have a clean interface in form of dev->needs_free_netdev
and lenient free_netdev() we can undo what commit 93ee31f14f ("[NET]:
Fix free_netdev on register_netdev failure.") has done and complete
the unregistration path by bringing the net_set_todo() call back.
After registration fails user is still expected to explicitly
free the net_device, so make sure ->needs_free_netdev is cleared,
otherwise rolling back the registration will cause the old double
free for callers who release rtnl_lock before the free.
This also solves the problem of priv_destructor not being called
on notifier error.
net_set_todo() will be moved back into unregister_netdevice_queue()
in a follow up.
Reported-by: Hulk Robot <hulkci@huawei.com>
Reported-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
There are two flavors of handling netdev registration:
- ones called without holding rtnl_lock: register_netdev() and
unregister_netdev(); and
- those called with rtnl_lock held: register_netdevice() and
unregister_netdevice().
While the semantics of the former are pretty clear, the same can't
be said about the latter. The netdev_todo mechanism is utilized to
perform some of the device unregistering tasks and it hooks into
rtnl_unlock() so the locked variants can't actually finish the work.
In general free_netdev() does not mix well with locked calls. Most
drivers operating under rtnl_lock set dev->needs_free_netdev to true
and expect core to make the free_netdev() call some time later.
The part where this becomes most problematic is error paths. There is
no way to unwind the state cleanly after a call to register_netdevice(),
since unreg can't be performed fully without dropping locks.
Make free_netdev() more lenient, and defer the freeing if device
is being unregistered. This allows error paths to simply call
free_netdev() both after register_netdevice() failed, and after
a call to unregister_netdevice() but before dropping rtnl_lock.
Simplify the error paths which are currently doing gymnastics
around free_netdev() handling.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When setting up a channel bridge, ppp_bridge_channels sets the
pch->bridge field before taking the associated reference on the bridge
file instance.
This opens up a refcount underflow bug if ppp_bridge_channels called
via. iotcl runs concurrently with ppp_unbridge_channels executing via.
file release.
The bug is triggered by ppp_bridge_channels taking the error path
through the 'err_unset' label. In this scenario, pch->bridge is set,
but the reference on the bridged channel will not be taken because
the function errors out. If ppp_unbridge_channels observes pch->bridge
before it is unset by the error path, it will erroneously drop the
reference on the bridged channel and cause a refcount underflow.
To avoid this, ensure that ppp_bridge_channels holds a reference on
each channel in advance of setting the bridge pointers.
Signed-off-by: Tom Parkin <tparkin@katalix.com>
Fixes: 4cf476ced4 ("ppp: add PPPIOCBRIDGECHAN and PPPIOCUNBRIDGECHAN ioctls")
Acked-by: Guillaume Nault <gnault@redhat.com>
Link: https://lore.kernel.org/r/20210107181315.3128-1-tparkin@katalix.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
reuse->socks[] is modified concurrently by reuseport_add_sock. To
prevent reading values that have not been fully initialized, only read
the array up until the last known safe index instead of incorrectly
re-reading the last index of the array.
Fixes: acdcecc612 ("udp: correct reuseport selection with connected sockets")
Signed-off-by: Baptiste Lepers <baptiste.lepers@gmail.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20210107051110.12247-1-baptiste.lepers@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
skbs in fraglist could be shared by a BPF filter loaded at TC. If TC
writes, it will call skb_ensure_writable -> pskb_expand_head to create
a private linear section for the head_skb. And then call
skb_clone_fraglist -> skb_get on each skb in the fraglist.
skb_segment_list overwrites part of the skb linear section of each
fragment itself. Even after skb_clone, the frag_skbs share their
linear section with their clone in PF_PACKET.
Both sk_receive_queue of PF_PACKET and PF_INET (or PF_INET6) can have
a link for the same frag_skbs chain. If a new skb (not frags) is
queued to one of the sk_receive_queue, multiple ptypes can see and
release this. It causes use-after-free.
[ 4443.426215] ------------[ cut here ]------------
[ 4443.426222] refcount_t: underflow; use-after-free.
[ 4443.426291] WARNING: CPU: 7 PID: 28161 at lib/refcount.c:190
refcount_dec_and_test_checked+0xa4/0xc8
[ 4443.426726] pstate: 60400005 (nZCv daif +PAN -UAO)
[ 4443.426732] pc : refcount_dec_and_test_checked+0xa4/0xc8
[ 4443.426737] lr : refcount_dec_and_test_checked+0xa0/0xc8
[ 4443.426808] Call trace:
[ 4443.426813] refcount_dec_and_test_checked+0xa4/0xc8
[ 4443.426823] skb_release_data+0x144/0x264
[ 4443.426828] kfree_skb+0x58/0xc4
[ 4443.426832] skb_queue_purge+0x64/0x9c
[ 4443.426844] packet_set_ring+0x5f0/0x820
[ 4443.426849] packet_setsockopt+0x5a4/0xcd0
[ 4443.426853] __sys_setsockopt+0x188/0x278
[ 4443.426858] __arm64_sys_setsockopt+0x28/0x38
[ 4443.426869] el0_svc_common+0xf0/0x1d0
[ 4443.426873] el0_svc_handler+0x74/0x98
[ 4443.426880] el0_svc+0x8/0xc
Fixes: 3a1296a38d (net: Support GRO/GSO fraglist chaining.)
Signed-off-by: Dongseok Yi <dseok.yi@samsung.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/r/1610072918-174177-1-git-send-email-dseok.yi@samsung.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
At the moment it is quite hard to identify the network interface
provided by IPA in userspace components: The network interface is
created as virtual device, without any link to the IPA device.
The interface name ("rmnet_ipa%d") is the only indication that the
network interface belongs to IPA, but this is not very reliable.
Add SET_NETDEV_DEV() to associate the network interface with the
IPA parent device. This allows userspace services like ModemManager
to properly identify that this network interface is provided by IPA
and belongs to the modem.
Cc: Alex Elder <elder@kernel.org>
Fixes: a646d6ec90 ("soc: qcom: ipa: modem and microcontroller")
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20210106100755.56800-1-stephan@gerhold.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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
