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Link: https://lore.kernel.org/r/20240927121719.897851549@linuxfoundation.org
Tested-by: Peter Schneider <pschneider1968@googlemail.com>
Tested-by: Allen Pais <apais@linux.microsoft.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
Tested-by: Salvatore Bonaccorso <carnil@debian.org>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Tested-by: Shuah Khan <skhan@linuxfoundation.org>
Tested-by: Ron Economos <re@w6rz.net>
Tested-by: kernelci.org bot <bot@kernelci.org>
Tested-by: Pavel Machek (CIP) <pavel@denx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 625fa77151f00c1bd00d34d60d6f2e710b3f9aad upstream.
The syzbot reported a kernel-usb-infoleak in usbtmc_write,
we need to clear the structure before filling fields.
Fixes: 4ddc645f40e9 ("usb: usbtmc: Add ioctl for vendor specific write")
Reported-and-tested-by: syzbot+9d34f80f841e948c3fdb@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=9d34f80f841e948c3fdb
Signed-off-by: Edward Adam Davis <eadavis@qq.com>
Cc: stable <stable@kernel.org>
Link: https://lore.kernel.org/r/tencent_9649AA6EC56EDECCA8A7D106C792D1C66B06@qq.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 7d47d22444bb7dc1b6d768904a22070ef35e1fc0 upstream.
Add the device id for the Macrosilicon MS3020 which is a
PL2303HXN based device.
Signed-off-by: Junhao Xie <bigfoot@classfun.cn>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 2eda374e883ad297bd9fe575a16c1dc850346075 upstream.
New CPU #defines encode vendor and family as well as model.
[ dhansen: vertically align 0's in invlpg_miss_ids[] ]
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/all/20240424181518.41946-1-tony.luck%40intel.com
[ Ricardo: I used the old match macro X86_MATCH_INTEL_FAM6_MODEL()
instead of X86_MATCH_VFM() as in the upstream commit.
I also kept the ALDERLAKE_N name instead of ATOM_GRACEMONT. Both refer
to the same CPU model. ]
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Reviewed-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit d05b5e0baf424c8c4b4709ac11f66ab726c8deaf upstream.
The current initialization of the struct x86_cpu_id via
pl4_support_ids[] is partial and wrong. It is initializing
"stepping" field with "X86_FEATURE_ANY" instead of "feature" field.
Use X86_MATCH_INTEL_FAM6_MODEL macro instead of initializing
each field of the struct x86_cpu_id for pl4_supported list of CPUs.
This X86_MATCH_INTEL_FAM6_MODEL macro internally uses another macro
X86_MATCH_VENDOR_FAM_MODEL_FEATURE for X86 based CPU matching with
appropriate initialized values.
Reported-by: Dave Hansen <dave.hansen@intel.com>
Link: https://lore.kernel.org/lkml/28ead36b-2d9e-1a36-6f4e-04684e420260@intel.com
Fixes: eb52bc2ae5b8 ("powercap: RAPL: Add Power Limit4 support for Meteor Lake SoC")
Fixes: b08b95cf30f5 ("powercap: RAPL: Add Power Limit4 support for Alder Lake-N and Raptor Lake-P")
Fixes: 515755906921 ("powercap: RAPL: Add Power Limit4 support for RaptorLake")
Fixes: 1cc5b9a411e4 ("powercap: Add Power Limit4 support for Alder Lake SoC")
Fixes: 8365a898fe53 ("powercap: Add Power Limit4 support")
Signed-off-by: Sumeet Pawnikar <sumeet.r.pawnikar@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
[ Ricardo: I removed METEORLAKE and METEORLAKE_L from pl4_support_ids as
they are not included in v6.1. ]
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit f8f210dc84709804c9f952297f2bfafa6ea6b4bd upstream.
When updating the global block reserve, we account for the 6 items needed
by an unlink operation and the 6 delayed references for each one of those
items. However the calculation for the delayed references is not correct
in case we have the free space tree enabled, as in that case we need to
touch the free space tree as well and therefore need twice the number of
bytes. So use the btrfs_calc_delayed_ref_bytes() helper to calculate the
number of bytes need for the delayed references at
btrfs_update_global_block_rsv().
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
[Diogo: this patch has been cherry-picked from the original commit;
conflicts included lack of a define (picked from commit 5630e2bcfe223)
and lack of btrfs_calc_delayed_ref_bytes (picked from commit 0e55a54502b97)
- changed const struct -> struct for compatibility.]
Signed-off-by: Diogo Jahchan Koike <djahchankoike@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 49ac6f05ace5bb0070c68a0193aa05d3c25d4c83 upstream.
A new endpoint using the IP of the initial subflow has been recently
added to increase the code coverage. But it breaks the test when using
old kernels not having commit 86e39e04482b ("mptcp: keep track of local
endpoint still available for each msk"), e.g. on v5.15.
Similar to commit d4c81bbb8600 ("selftests: mptcp: join: support local
endpoint being tracked or not"), it is possible to add the new endpoint
conditionally, by checking if "mptcp_pm_subflow_check_next" is present
in kallsyms: this is not directly linked to the commit introducing this
symbol but for the parent one which is linked anyway. So we can know in
advance what will be the expected behaviour, and add the new endpoint
only when it makes sense to do so.
Fixes: 4878f9f8421f ("selftests: mptcp: join: validate fullmesh endp on 1st sf")
Cc: stable@vger.kernel.org
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20240910-net-selftests-mptcp-fix-install-v1-1-8f124aa9156d@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
[ Conflicts in mptcp_join.sh, because the 'run_tests' helper has been
modified in multiple commits that are not in this version, e.g. commit
e571fb09c893 ("selftests: mptcp: add speed env var"). The conflict was
in the context, the new lines can still be added at the same place. ]
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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mcp251xfd_chip_start/stop()
commit a7801540f325d104de5065850a003f1d9bdc6ad3 upstream.
The mcp251xfd wakes up from Low Power or Sleep Mode when SPI activity
is detected. To avoid this, make sure that the timestamp worker is
stopped before shutting down the chip.
Split the starting of the timestamp worker out of
mcp251xfd_timestamp_init() into the separate function
mcp251xfd_timestamp_start().
Call mcp251xfd_timestamp_init() before mcp251xfd_chip_start(), move
mcp251xfd_timestamp_start() to mcp251xfd_chip_start(). In this way,
mcp251xfd_timestamp_stop() can be called unconditionally by
mcp251xfd_chip_stop().
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 51b2a721612236335ddec4f3fb5f59e72a204f3a upstream.
To fix the coding style, remove the whitespace in front of labels.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit d795848ecce24a75dfd46481aee066ae6fe39775 upstream.
Userspace may trigger a speculative read of an address outside the gpio
descriptor array.
Users can do that by calling gpio_ioctl() with an offset out of range.
Offset is copied from user and then used as an array index to get
the gpio descriptor without sanitization in gpio_device_get_desc().
This change ensures that the offset is sanitized by using
array_index_nospec() to mitigate any possibility of speculative
information leaks.
This bug was discovered and resolved using Coverity Static Analysis
Security Testing (SAST) by Synopsys, Inc.
Signed-off-by: Hagar Hemdan <hagarhem@amazon.com>
Link: https://lore.kernel.org/r/20240523085332.1801-1-hagarhem@amazon.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Hugo SIMELIERE <hsimeliere.opensource@witekio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit b440396387418fe2feaacd41ca16080e7a8bc9ad upstream.
linereq_set_config() behaves badly when direction is not set.
The configuration validation is borrowed from linereq_create(), where,
to verify the intent of the user, the direction must be set to in order to
effect a change to the electrical configuration of a line. But, when
applied to reconfiguration, that validation does not allow for the unset
direction case, making it possible to clear flags set previously without
specifying the line direction.
Adding to the inconsistency, those changes are not immediately applied by
linereq_set_config(), but will take effect when the line value is next get
or set.
For example, by requesting a configuration with no flags set, an output
line with GPIO_V2_LINE_FLAG_ACTIVE_LOW and GPIO_V2_LINE_FLAG_OPEN_DRAIN
set could have those flags cleared, inverting the sense of the line and
changing the line drive to push-pull on the next line value set.
Skip the reconfiguration of lines for which the direction is not set, and
only reconfigure the lines for which direction is set.
Fixes: a54756cb24ea ("gpiolib: cdev: support GPIO_V2_LINE_SET_CONFIG_IOCTL")
Signed-off-by: Kent Gibson <warthog618@gmail.com>
Link: https://lore.kernel.org/r/20240626052925.174272-3-warthog618@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This reverts commit 19d13ec00a8b1d60c5cc06bd0006b91d5bd8d46f which is
commmit 1474bc87fe57deac726cc10203f73daa6c3212f7 upstream.
The reverted commit is based on implementation of wiphy locking that isn't
planned to redo on a stable kernel, so revert it to avoid warning:
WARNING: CPU: 0 PID: 9 at net/wireless/core.h:231 disconnect_work+0xb8/0x144 [cfg80211]
CPU: 0 PID: 9 Comm: kworker/0:1 Not tainted 6.6.51-00141-ga1649b6f8ed6 #7
Hardware name: Freescale i.MX6 SoloX (Device Tree)
Workqueue: events disconnect_work [cfg80211]
unwind_backtrace from show_stack+0x10/0x14
show_stack from dump_stack_lvl+0x58/0x70
dump_stack_lvl from __warn+0x70/0x1c0
__warn from warn_slowpath_fmt+0x16c/0x294
warn_slowpath_fmt from disconnect_work+0xb8/0x144 [cfg80211]
disconnect_work [cfg80211] from process_one_work+0x204/0x620
process_one_work from worker_thread+0x1b0/0x474
worker_thread from kthread+0x10c/0x12c
kthread from ret_from_fork+0x14/0x24
Reported-by: petter@technux.se
Closes: https://lore.kernel.org/linux-wireless/9e98937d781c990615ef27ee0c858ff9@technux.se/T/#t
Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit efefd4f00c967d00ad7abe092554ffbb70c1a793 upstream.
Add missing decorator type to lookup expression and tighten WARN_ON_ONCE
check in pipapo to spot earlier that this is unset.
Fixes: 29b359cf6d95 ("netfilter: nft_set_pipapo: walk over current view on netlink dump")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 29b359cf6d95fd60730533f7f10464e95bd17c73 upstream.
The generation mask can be updated while netlink dump is in progress.
The pipapo set backend walk iterator cannot rely on it to infer what
view of the datastructure is to be used. Add notation to specify if user
wants to read/update the set.
Based on patch from Florian Westphal.
Fixes: 2b84e215f874 ("netfilter: nft_set_pipapo: .walk does not deal with generations")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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nft_socket_cgroup_subtree_level()
commit 7052622fccb1efb850c6b55de477f65d03525a30 upstream.
The cgroup_get_from_path() function never returns NULL, it returns error
pointers. Update the error handling to match.
Fixes: 7f3287db6543 ("netfilter: nft_socket: make cgroupsv2 matching work with namespaces")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Acked-by: Florian Westphal <fw@strlen.de>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Link: https://patch.msgid.link/bbc0c4e0-05cc-4f44-8797-2f4b3920a820@stanley.mountain
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 7f3287db654395f9c5ddd246325ff7889f550286 upstream.
When running in container environmment, /sys/fs/cgroup/ might not be
the real root node of the sk-attached cgroup.
Example:
In container:
% stat /sys//fs/cgroup/
Device: 0,21 Inode: 2214 ..
% stat /sys/fs/cgroup/foo
Device: 0,21 Inode: 2264 ..
The expectation would be for:
nft add rule .. socket cgroupv2 level 1 "foo" counter
to match traffic from a process that got added to "foo" via
"echo $pid > /sys/fs/cgroup/foo/cgroup.procs".
However, 'level 3' is needed to make this work.
Seen from initial namespace, the complete hierarchy is:
% stat /sys/fs/cgroup/system.slice/docker-.../foo
Device: 0,21 Inode: 2264 ..
i.e. hierarchy is
0 1 2 3
/ -> system.slice -> docker-1... -> foo
... but the container doesn't know that its "/" is the "docker-1.."
cgroup. Current code will retrieve the 'system.slice' cgroup node
and store its kn->id in the destination register, so compare with
2264 ("foo" cgroup id) will not match.
Fetch "/" cgroup from ->init() and add its level to the level we try to
extract. cgroup root-level is 0 for the init-namespace or the level
of the ancestor that is exposed as the cgroup root inside the container.
In the above case, cgrp->level of "/" resolved in the container is 2
(docker-1...scope/) and request for 'level 1' will get adjusted
to fetch the actual level (3).
v2: use CONFIG_SOCK_CGROUP_DATA, eval function depends on it.
(kernel test robot)
Cc: cgroups@vger.kernel.org
Fixes: e0bb96db96f8 ("netfilter: nft_socket: add support for cgroupsv2")
Reported-by: Nadia Pinaeva <n.m.pinaeva@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit f1e1765aad7de7a8b8102044fc6a44684bc36180 ]
If the journal geometry results in a sector or log stripe unit
validation problem, it indicates that we cannot set the log up to
safely write to the the journal. In these cases, we must abort the
mount because the corruption needs external intervention to resolve.
Similarly, a journal that is too large cannot be written to safely,
either, so we shouldn't allow those geometries to mount, either.
If the log is too small, we risk having transaction reservations
overruning the available log space and the system hanging waiting
for space it can never provide. This is purely a runtime hang issue,
not a corruption issue as per the first cases listed above. We abort
mounts of the log is too small for V5 filesystems, but we must allow
v4 filesystems to mount because, historically, there was no log size
validity checking and so some systems may still be out there with
undersized logs.
The problem is that on V4 filesystems, when we discover a log
geometry problem, we skip all the remaining checks and then allow
the log to continue mounting. This mean that if one of the log size
checks fails, we skip the log stripe unit check. i.e. we allow the
mount because a "non-fatal" geometry is violated, and then fail to
check the hard fail geometries that should fail the mount.
Move all these fatal checks to the superblock verifier, and add a
new check for the two log sector size geometry variables having the
same values. This will prevent any attempt to mount a log that has
invalid or inconsistent geometries long before we attempt to mount
the log.
However, for the minimum log size checks, we can only do that once
we've setup up the log and calculated all the iclog sizes and
roundoffs. Hence this needs to remain in the log mount code after
the log has been initialised. It is also the only case where we
should allow a v4 filesystem to continue running, so leave that
handling in place, too.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 8e698ee72c4ecbbf18264568eb310875839fd601 ]
Through generic/300, I discovered that mkfs.xfs creates corrupt
filesystems when given these parameters:
Filesystems formatted with --unsupported are not supported!!
meta-data=/dev/sda isize=512 agcount=8, agsize=16352 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=1, sparse=1, rmapbt=1
= reflink=1 bigtime=1 inobtcount=1 nrext64=1
data = bsize=4096 blocks=130816, imaxpct=25
= sunit=32 swidth=128 blks
naming =version 2 bsize=4096 ascii-ci=0, ftype=1
log =internal log bsize=4096 blocks=8192, version=2
= sectsz=512 sunit=32 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
= rgcount=0 rgsize=0 blks
Discarding blocks...Done.
Phase 1 - find and verify superblock...
- reporting progress in intervals of 15 minutes
Phase 2 - using internal log
- zero log...
- 16:30:50: zeroing log - 16320 of 16320 blocks done
- scan filesystem freespace and inode maps...
agf_freeblks 25, counted 0 in ag 4
sb_fdblocks 8823, counted 8798
The root cause of this problem is the numrecs handling in
xfs_freesp_init_recs, which is used to initialize a new AG. Prior to
calling the function, we set up the new bnobt block with numrecs == 1
and rely on _freesp_init_recs to format that new record. If the last
record created has a blockcount of zero, then it sets numrecs = 0.
That last bit isn't correct if the AG contains the log, the start of the
log is not immediately after the initial blocks due to stripe alignment,
and the end of the log is perfectly aligned with the end of the AG. For
this case, we actually formatted a single bnobt record to handle the
free space before the start of the (stripe aligned) log, and incremented
arec to try to format a second record. That second record turned out to
be unnecessary, so what we really want is to leave numrecs at 1.
The numrecs handling itself is overly complicated because a different
function sets numrecs == 1. Change the bnobt creation code to start
with numrecs set to zero and only increment it after successfully
formatting a free space extent into the btree block.
Fixes: f327a00745ff ("xfs: account for log space when formatting new AGs")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 537c013b140d373d1ffe6290b841dc00e67effaa ]
During review of the patcheset that provided reloading of the incore
iunlink list, Dave made a few suggestions, and I updated the copy in my
dev tree. Unfortunately, I then got distracted by ... who even knows
what ... and forgot to backport those changes from my dev tree to my
release candidate branch. I then sent multiple pull requests with stale
patches, and that's what was merged into -rc3.
So.
This patch re-adds the use of an unlocked iunlink list check to
determine if we want to allocate the resources to recreate the incore
list. Since lost iunlinked inodes are supposed to be rare, this change
helps us avoid paying the transaction and AGF locking costs every time
we open any inode.
This also re-adds the shutdowns on failure, and re-applies the
restructuring of the inner loop in xfs_inode_reload_unlinked_bucket, and
re-adds a requested comment about the quotachecking code.
Retain the original RVB tag from Dave since there's no code change from
the last submission.
Fixes: 68b957f64fca1 ("xfs: load uncached unlinked inodes into memory on demand")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 49813a21ed57895b73ec4ed3b99d4beec931496f ]
Teach quotacheck to reload the unlinked inode lists when walking the
inode table. This requires extra state handling, since it's possible
that a reloaded inode will get inactivated before quotacheck tries to
scan it; in this case, we need to ensure that the reloaded inode does
not have dquots attached when it is freed.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 83771c50e42b92de6740a63e152c96c052d37736 ]
The previous patch to reload unrecovered unlinked inodes when adding a
newly created inode to the unlinked list is missing a key piece of
functionality. It doesn't handle the case that someone calls xfs_iget
on an inode that is not the last item in the incore list. For example,
if at mount time the ondisk iunlink bucket looks like this:
AGI -> 7 -> 22 -> 3 -> NULL
None of these three inodes are cached in memory. Now let's say that
someone tries to open inode 3 by handle. We need to walk the list to
make sure that inodes 7 and 22 get loaded cold, and that the
i_prev_unlinked of inode 3 gets set to 22.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit f12b96683d6976a3a07fdf3323277c79dbe8f6ab ]
Alter the definition of i_prev_unlinked slightly to make it more obvious
when an inode with 0 link count is not part of the iunlink bucket lists
rooted in the AGI. This distinction is necessary because it is not
sufficient to check inode.i_nlink to decide if an inode is on the
unlinked list. Updates to i_nlink can happen while holding only
ILOCK_EXCL, but updates to an inode's position in the AGI unlinked list
(which happen after the nlink update) requires both ILOCK_EXCL and the
AGI buffer lock.
The next few patches will make it possible to reload an entire unlinked
bucket list when we're walking the inode table or performing handle
operations and need more than the ability to iget the last inode in the
chain.
The upcoming directory repair code also needs to be able to make this
distinction to decide if a zero link count directory should be moved to
the orphanage or allowed to inactivate. An upcoming enhancement to the
online AGI fsck code will need this distinction to check and rebuild the
AGI unlinked buckets.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
[ Upstream commit 3c90c01e49342b166e5c90ec2c85b220be15a20e ]
The agend should be "start + length - 1", then, blockcount should be
"end + 1 - start". Correct 2 calculation mistakes.
Also, rename "agend" to "range_agend" because it's not the end of the AG
per se; it's the end of the dead region within an AG's agblock space.
Fixes: 5cf32f63b0f4 ("xfs: fix the calculation for "end" and "length"")
Signed-off-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
[ Upstream commit 348a1983cf4cf5099fc398438a968443af4c9f65 ]
Luis has been reporting an assert failure when freeing an inode
cluster during inode inactivation for a while. The assert looks
like:
XFS: Assertion failed: bp->b_flags & XBF_DONE, file: fs/xfs/xfs_trans_buf.c, line: 241
------------[ cut here ]------------
kernel BUG at fs/xfs/xfs_message.c:102!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 4 PID: 73 Comm: kworker/4:1 Not tainted 6.10.0-rc1 #4
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: xfs-inodegc/loop5 xfs_inodegc_worker [xfs]
RIP: 0010:assfail (fs/xfs/xfs_message.c:102) xfs
RSP: 0018:ffff88810188f7f0 EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffff88816e748250 RCX: 1ffffffff844b0e7
RDX: 0000000000000004 RSI: ffff88810188f558 RDI: ffffffffc2431fa0
RBP: 1ffff11020311f01 R08: 0000000042431f9f R09: ffffed1020311e9b
R10: ffff88810188f4df R11: ffffffffac725d70 R12: ffff88817a3f4000
R13: ffff88812182f000 R14: ffff88810188f998 R15: ffffffffc2423f80
FS: 0000000000000000(0000) GS:ffff8881c8400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055fe9d0f109c CR3: 000000014426c002 CR4: 0000000000770ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
<TASK>
xfs_trans_read_buf_map (fs/xfs/xfs_trans_buf.c:241 (discriminator 1)) xfs
xfs_imap_to_bp (fs/xfs/xfs_trans.h:210 fs/xfs/libxfs/xfs_inode_buf.c:138) xfs
xfs_inode_item_precommit (fs/xfs/xfs_inode_item.c:145) xfs
xfs_trans_run_precommits (fs/xfs/xfs_trans.c:931) xfs
__xfs_trans_commit (fs/xfs/xfs_trans.c:966) xfs
xfs_inactive_ifree (fs/xfs/xfs_inode.c:1811) xfs
xfs_inactive (fs/xfs/xfs_inode.c:2013) xfs
xfs_inodegc_worker (fs/xfs/xfs_icache.c:1841 fs/xfs/xfs_icache.c:1886) xfs
process_one_work (kernel/workqueue.c:3231)
worker_thread (kernel/workqueue.c:3306 (discriminator 2) kernel/workqueue.c:3393 (discriminator 2))
kthread (kernel/kthread.c:389)
ret_from_fork (arch/x86/kernel/process.c:147)
ret_from_fork_asm (arch/x86/entry/entry_64.S:257)
</TASK>
And occurs when the the inode precommit handlers is attempt to look
up the inode cluster buffer to attach the inode for writeback.
The trail of logic that I can reconstruct is as follows.
1. the inode is clean when inodegc runs, so it is not
attached to a cluster buffer when precommit runs.
2. #1 implies the inode cluster buffer may be clean and not
pinned by dirty inodes when inodegc runs.
3. #2 implies that the inode cluster buffer can be reclaimed
by memory pressure at any time.
4. The assert failure implies that the cluster buffer was
attached to the transaction, but not marked done. It had
been accessed earlier in the transaction, but not marked
done.
5. #4 implies the cluster buffer has been invalidated (i.e.
marked stale).
6. #5 implies that the inode cluster buffer was instantiated
uninitialised in the transaction in xfs_ifree_cluster(),
which only instantiates the buffers to invalidate them
and never marks them as done.
Given factors 1-3, this issue is highly dependent on timing and
environmental factors. Hence the issue can be very difficult to
reproduce in some situations, but highly reliable in others. Luis
has an environment where it can be reproduced easily by g/531 but,
OTOH, I've reproduced it only once in ~2000 cycles of g/531.
I think the fix is to have xfs_ifree_cluster() set the XBF_DONE flag
on the cluster buffers, even though they may not be initialised. The
reasons why I think this is safe are:
1. A buffer cache lookup hit on a XBF_STALE buffer will
clear the XBF_DONE flag. Hence all future users of the
buffer know they have to re-initialise the contents
before use and mark it done themselves.
2. xfs_trans_binval() sets the XFS_BLI_STALE flag, which
means the buffer remains locked until the journal commit
completes and the buffer is unpinned. Hence once marked
XBF_STALE/XFS_BLI_STALE by xfs_ifree_cluster(), the only
context that can access the freed buffer is the currently
running transaction.
3. #2 implies that future buffer lookups in the currently
running transaction will hit the transaction match code
and not the buffer cache. Hence XBF_STALE and
XFS_BLI_STALE will not be cleared unless the transaction
initialises and logs the buffer with valid contents
again. At which point, the buffer will be marked marked
XBF_DONE again, so having XBF_DONE already set on the
stale buffer is a moot point.
4. #2 also implies that any concurrent access to that
cluster buffer will block waiting on the buffer lock
until the inode cluster has been fully freed and is no
longer an active inode cluster buffer.
5. #4 + #1 means that any future user of the disk range of
that buffer will always see the range of disk blocks
covered by the cluster buffer as not done, and hence must
initialise the contents themselves.
6. Setting XBF_DONE in xfs_ifree_cluster() then means the
unlinked inode precommit code will see a XBF_DONE buffer
from the transaction match as it expects. It can then
attach the stale but newly dirtied inode to the stale
but newly dirtied cluster buffer without unexpected
failures. The stale buffer will then sail through the
journal and do the right thing with the attached stale
inode during unpin.
Hence the fix is just one line of extra code. The explanation of
why we have to set XBF_DONE in xfs_ifree_cluster, OTOH, is long and
complex....
Fixes: 82842fee6e59 ("xfs: fix AGF vs inode cluster buffer deadlock")
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Tested-by: Luis Chamberlain <mcgrof@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
[ Upstream commit 1bba82fe1afac69c85c1f5ea137c8e73de3c8032 ]
In commit 8ee81ed581ff, Ye Bin complained about an ASSERT in the bmapx
code that trips if we encounter a delalloc extent after flushing the
pagecache to disk. The ioctl code does not hold MMAPLOCK so it's
entirely possible that a racing write page fault can create a delalloc
extent after the file has been flushed. The proposed solution was to
replace the assertion with an early return that avoids filling out the
bmap recordset with a delalloc entry if the caller didn't ask for it.
At the time, I recall thinking that the forward logic sounded ok, but
felt hesitant because I suspected that changing this code would cause
something /else/ to burst loose due to some other subtlety.
syzbot of course found that subtlety. If all the extent mappings found
after the flush are delalloc mappings, we'll reach the end of the data
fork without ever incrementing bmv->bmv_entries. This is new, since
before we'd have emitted the delalloc mappings even though the caller
didn't ask for them. Once we reach the end, we'll try to set
BMV_OF_LAST on the -1st entry (because bmv_entries is zero) and go
corrupt something else in memory. Yay.
I really dislike all these stupid patches that fiddle around with debug
code and break things that otherwise worked well enough. Nobody was
complaining that calling XFS_IOC_BMAPX without BMV_IF_DELALLOC would
return BMV_OF_DELALLOC records, and now we've gone from "weird behavior
that nobody cared about" to "bad behavior that must be addressed
immediately".
Maybe I'll just ignore anything from Huawei from now on for my own sake.
Reported-by: syzbot+c103d3808a0de5faaf80@syzkaller.appspotmail.com
Link: https://lore.kernel.org/linux-xfs/20230412024907.GP360889@frogsfrogsfrogs/
Fixes: 8ee81ed581ff ("xfs: fix BUG_ON in xfs_getbmap()")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
[ Upstream commit 68b957f64fca1930164bfc6d6d379acdccd547d7 ]
shrikanth hegde reports that filesystems fail shortly after mount with
the following failure:
WARNING: CPU: 56 PID: 12450 at fs/xfs/xfs_inode.c:1839 xfs_iunlink_lookup+0x58/0x80 [xfs]
This of course is the WARN_ON_ONCE in xfs_iunlink_lookup:
ip = radix_tree_lookup(&pag->pag_ici_root, agino);
if (WARN_ON_ONCE(!ip || !ip->i_ino)) { ... }
>From diagnostic data collected by the bug reporters, it would appear
that we cleanly mounted a filesystem that contained unlinked inodes.
Unlinked inodes are only processed as a final step of log recovery,
which means that clean mounts do not process the unlinked list at all.
Prior to the introduction of the incore unlinked lists, this wasn't a
problem because the unlink code would (very expensively) traverse the
entire ondisk metadata iunlink chain to keep things up to date.
However, the incore unlinked list code complains when it realizes that
it is out of sync with the ondisk metadata and shuts down the fs, which
is bad.
Ritesh proposed to solve this problem by unconditionally parsing the
unlinked lists at mount time, but this imposes a mount time cost for
every filesystem to catch something that should be very infrequent.
Instead, let's target the places where we can encounter a next_unlinked
pointer that refers to an inode that is not in cache, and load it into
cache.
Note: This patch does not address the problem of iget loading an inode
from the middle of the iunlink list and needing to set i_prev_unlinked
correctly.
Reported-by: shrikanth hegde <sshegde@linux.vnet.ibm.com>
Triaged-by: Ritesh Harjani <ritesh.list@gmail.com>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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[ Upstream commit 5cf32f63b0f4c520460c1a5dd915dc4f09085f29 ]
The value of "end" should be "start + length - 1".
Signed-off-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
[ Upstream commit 4b827b3f305d1fcf837265f1e12acc22ee84327c ]
It just creates unnecessary bot noise these days.
Reported-by: syzbot+6ae213503fb12e87934f@syzkaller.appspotmail.com
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
[ Upstream commit c3b880acadc95d6e019eae5d669e072afda24f1b ]
I found a corruption during growfs:
XFS (loop0): Internal error agbno >= mp->m_sb.sb_agblocks at line 3661 of
file fs/xfs/libxfs/xfs_alloc.c. Caller __xfs_free_extent+0x28e/0x3c0
CPU: 0 PID: 573 Comm: xfs_growfs Not tainted 6.3.0-rc7-next-20230420-00001-gda8c95746257
Call Trace:
<TASK>
dump_stack_lvl+0x50/0x70
xfs_corruption_error+0x134/0x150
__xfs_free_extent+0x2c1/0x3c0
xfs_ag_extend_space+0x291/0x3e0
xfs_growfs_data+0xd72/0xe90
xfs_file_ioctl+0x5f9/0x14a0
__x64_sys_ioctl+0x13e/0x1c0
do_syscall_64+0x39/0x80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
XFS (loop0): Corruption detected. Unmount and run xfs_repair
XFS (loop0): Internal error xfs_trans_cancel at line 1097 of file
fs/xfs/xfs_trans.c. Caller xfs_growfs_data+0x691/0xe90
CPU: 0 PID: 573 Comm: xfs_growfs Not tainted 6.3.0-rc7-next-20230420-00001-gda8c95746257
Call Trace:
<TASK>
dump_stack_lvl+0x50/0x70
xfs_error_report+0x93/0xc0
xfs_trans_cancel+0x2c0/0x350
xfs_growfs_data+0x691/0xe90
xfs_file_ioctl+0x5f9/0x14a0
__x64_sys_ioctl+0x13e/0x1c0
do_syscall_64+0x39/0x80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2d86706577
The bug can be reproduced with the following sequence:
# truncate -s 1073741824 xfs_test.img
# mkfs.xfs -f -b size=1024 -d agcount=4 xfs_test.img
# truncate -s 2305843009213693952 xfs_test.img
# mount -o loop xfs_test.img /mnt/test
# xfs_growfs -D 1125899907891200 /mnt/test
The root cause is that during growfs, user space passed in a large value
of newblcoks to xfs_growfs_data_private(), due to current sb_agblocks is
too small, new AG count will exceed UINT_MAX. Because of AG number type
is unsigned int and it would overflow, that caused nagcount much smaller
than the actual value. During AG extent space, delta blocks in
xfs_resizefs_init_new_ags() will much larger than the actual value due to
incorrect nagcount, even exceed UINT_MAX. This will cause corruption and
be detected in __xfs_free_extent. Fix it by growing the filesystem to up
to the maximally allowed AGs and not return EINVAL when new AG count
overflow.
Signed-off-by: Long Li <leo.lilong@huawei.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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[ Upstream commit d4d12c02bf5f768f1b423c7ae2909c5afdfe0d5f ]
Unlinked list recovery requires errors removing the inode the from
the unlinked list get fed back to the main recovery loop. Now that
we offload the unlinking to the inodegc work, we don't get errors
being fed back when we trip over a corruption that prevents the
inode from being removed from the unlinked list.
This means we never clear the corrupt unlinked list bucket,
resulting in runtime operations eventually tripping over it and
shutting down.
Fix this by collecting inodegc worker errors and feed them
back to the flush caller. This is largely best effort - the only
context that really cares is log recovery, and it only flushes a
single inode at a time so we don't need complex synchronised
handling. Essentially the inodegc workers will capture the first
error that occurs and the next flush will gather them and clear
them. The flush itself will only report the first gathered error.
In the cases where callers can return errors, propagate the
collected inodegc flush error up the error handling chain.
In the case of inode unlinked list recovery, there are several
superfluous calls to flush queued unlinked inodes -
xlog_recover_iunlink_bucket() guarantees that it has flushed the
inodegc and collected errors before it returns. Hence nothing in the
calling path needs to run a flush, even when an error is returned.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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[ Upstream commit 82842fee6e5979ca7e2bf4d839ef890c22ffb7aa ]
Lock order in XFS is AGI -> AGF, hence for operations involving
inode unlinked list operations we always lock the AGI first. Inode
unlinked list operations operate on the inode cluster buffer,
so the lock order there is AGI -> inode cluster buffer.
For O_TMPFILE operations, this now means the lock order set down in
xfs_rename and xfs_link is AGI -> inode cluster buffer -> AGF as the
unlinked ops are done before the directory modifications that may
allocate space and lock the AGF.
Unfortunately, we also now lock the inode cluster buffer when
logging an inode so that we can attach the inode to the cluster
buffer and pin it in memory. This creates a lock order of AGF ->
inode cluster buffer in directory operations as we have to log the
inode after we've allocated new space for it.
This creates a lock inversion between the AGF and the inode cluster
buffer. Because the inode cluster buffer is shared across multiple
inodes, the inversion is not specific to individual inodes but can
occur when inodes in the same cluster buffer are accessed in
different orders.
To fix this we need move all the inode log item cluster buffer
interactions to the end of the current transaction. Unfortunately,
xfs_trans_log_inode() calls are littered throughout the transactions
with no thought to ordering against other items or locking. This
makes it difficult to do anything that involves changing the call
sites of xfs_trans_log_inode() to change locking orders.
However, we do now have a mechanism that allows is to postpone dirty
item processing to just before we commit the transaction: the
->iop_precommit method. This will be called after all the
modifications are done and high level objects like AGI and AGF
buffers have been locked and modified, thereby providing a mechanism
that guarantees we don't lock the inode cluster buffer before those
high level objects are locked.
This change is largely moving the guts of xfs_trans_log_inode() to
xfs_inode_item_precommit() and providing an extra flag context in
the inode log item to track the dirty state of the inode in the
current transaction. This also means we do a lot less repeated work
in xfs_trans_log_inode() by only doing it once per transaction when
all the work is done.
Fixes: 298f7bec503f ("xfs: pin inode backing buffer to the inode log item")
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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[ Upstream commit cb042117488dbf0b3b38b05771639890fada9a52 ]
To fix a AGI-AGF-inode cluster buffer deadlock, we need to move
inode cluster buffer operations to the ->iop_precommit() method.
However, this means that deferred operations can require precommits
to be run on the final transaction that the deferred ops pass back
to xfs_trans_commit() context. This will be exposed by attribute
handling, in that the last changes to the inode in the attr set
state machine "disappear" because the precommit operation is not run.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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[ Upstream commit 89a4bf0dc3857569a77061d3d5ea2ac85f7e13c6 ]
When a buffer is unpinned by xfs_buf_item_unpin(), we need to access
the buffer after we've dropped the buffer log item reference count.
This opens a window where we can have two racing unpins for the
buffer item (e.g. shutdown checkpoint context callback processing
racing with journal IO iclog completion processing) and both attempt
to access the buffer after dropping the BLI reference count. If we
are unlucky, the "BLI freed" context wins the race and frees the
buffer before the "BLI still active" case checks the buffer pin
count.
This results in a use after free that can only be triggered
in active filesystem shutdown situations.
To fix this, we need to ensure that buffer existence extends beyond
the BLI reference count checks and until the unpin processing is
complete. This implies that a buffer pin operation must also take a
buffer reference to ensure that the buffer cannot be freed until the
buffer unpin processing is complete.
Reported-by: yangerkun <yangerkun@huawei.com>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
[ Upstream commit 8ee81ed581ff35882b006a5205100db0b57bf070 ]
There's issue as follows:
XFS: Assertion failed: (bmv->bmv_iflags & BMV_IF_DELALLOC) != 0, file: fs/xfs/xfs_bmap_util.c, line: 329
------------[ cut here ]------------
kernel BUG at fs/xfs/xfs_message.c:102!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 14612 Comm: xfs_io Not tainted 6.3.0-rc2-next-20230315-00006-g2729d23ddb3b-dirty #422
RIP: 0010:assfail+0x96/0xa0
RSP: 0018:ffffc9000fa178c0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff888179a18000
RDX: 0000000000000000 RSI: ffff888179a18000 RDI: 0000000000000002
RBP: 0000000000000000 R08: ffffffff8321aab6 R09: 0000000000000000
R10: 0000000000000001 R11: ffffed1105f85139 R12: ffffffff8aacc4c0
R13: 0000000000000149 R14: ffff888269f58000 R15: 000000000000000c
FS: 00007f42f27a4740(0000) GS:ffff88882fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000b92388 CR3: 000000024f006000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
xfs_getbmap+0x1a5b/0x1e40
xfs_ioc_getbmap+0x1fd/0x5b0
xfs_file_ioctl+0x2cb/0x1d50
__x64_sys_ioctl+0x197/0x210
do_syscall_64+0x39/0xb0
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Above issue may happen as follows:
ThreadA ThreadB
do_shared_fault
__do_fault
xfs_filemap_fault
__xfs_filemap_fault
filemap_fault
xfs_ioc_getbmap -> Without BMV_IF_DELALLOC flag
xfs_getbmap
xfs_ilock(ip, XFS_IOLOCK_SHARED);
filemap_write_and_wait
do_page_mkwrite
xfs_filemap_page_mkwrite
__xfs_filemap_fault
xfs_ilock(XFS_I(inode), XFS_MMAPLOCK_SHARED);
iomap_page_mkwrite
...
xfs_buffered_write_iomap_begin
xfs_bmapi_reserve_delalloc -> Allocate delay extent
xfs_ilock_data_map_shared(ip)
xfs_getbmap_report_one
ASSERT((bmv->bmv_iflags & BMV_IF_DELALLOC) != 0)
-> trigger BUG_ON
As xfs_filemap_page_mkwrite() only hold XFS_MMAPLOCK_SHARED lock, there's
small window mkwrite can produce delay extent after file write in xfs_getbmap().
To solve above issue, just skip delalloc extents.
Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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[ Upstream commit 0c7273e494dd5121e20e160cb2f047a593ee14a8 ]
The background inode inactivation can attached dquots to inodes, but
this can race with a foreground quotacheck failure that leads to
disabling quotas and freeing the mp->m_quotainfo structure. The
background inode inactivation then tries to allocate a quota, tries
to dereference mp->m_quotainfo, and crashes like so:
XFS (loop1): Quotacheck: Unsuccessful (Error -5): Disabling quotas.
xfs filesystem being mounted at /root/syzkaller.qCVHXV/0/file0 supports timestamps until 2038 (0x7fffffff)
BUG: kernel NULL pointer dereference, address: 00000000000002a8
....
CPU: 0 PID: 161 Comm: kworker/0:4 Not tainted 6.2.0-c9c3395d5e3d #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
Workqueue: xfs-inodegc/loop1 xfs_inodegc_worker
RIP: 0010:xfs_dquot_alloc+0x95/0x1e0
....
Call Trace:
<TASK>
xfs_qm_dqread+0x46/0x440
xfs_qm_dqget_inode+0x154/0x500
xfs_qm_dqattach_one+0x142/0x3c0
xfs_qm_dqattach_locked+0x14a/0x170
xfs_qm_dqattach+0x52/0x80
xfs_inactive+0x186/0x340
xfs_inodegc_worker+0xd3/0x430
process_one_work+0x3b1/0x960
worker_thread+0x52/0x660
kthread+0x161/0x1a0
ret_from_fork+0x29/0x50
</TASK>
....
Prevent this race by flushing all the queued background inode
inactivations pending before purging all the cached dquots when
quotacheck fails.
Reported-by: Pengfei Xu <pengfei.xu@intel.com>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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[ Upstream commit 60b730a40c43fbcc034970d3e77eb0f25b8cc1cf ]
If the end position of a GETFSMAP query overlaps an allocated space and
we're using the free space info to generate fsmap info, the akeys
information gets fed into the fsmap formatter with bad results.
Zero-init the space.
Reported-by: syzbot+090ae72d552e6bd93cfe@syzkaller.appspotmail.com
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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[ Upstream commit d5753847b216db0e553e8065aa825cfe497ad143 ]
When we enter xfs_bmbt_alloc_block() without having first allocated
a data extent (i.e. tp->t_firstblock == NULLFSBLOCK) because we
are doing something like unwritten extent conversion, the transaction
block reservation is used as the minleft value.
This works for operations like unwritten extent conversion, but it
assumes that the block reservation is only for a BMBT split. THis is
not always true, and sometimes results in larger than necessary
minleft values being set. We only actually need enough space for a
btree split, something we already handle correctly in
xfs_bmapi_write() via the xfs_bmapi_minleft() calculation.
We should use xfs_bmapi_minleft() in xfs_bmbt_alloc_block() to
calculate the number of blocks a BMBT split on this inode is going to
require, not use the transaction block reservation that contains the
maximum number of blocks this transaction may consume in it...
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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[ Upstream commit f08f984c63e9980614ae3a0a574b31eaaef284b2 ]
When an XFS filesystem has free inodes in chunks already allocated
on disk, it will still allocate new inode chunks if the target AG
has no free inodes in it. Normally, this is a good idea as it
preserves locality of all the inodes in a given directory.
However, at ENOSPC this can lead to using the last few remaining
free filesystem blocks to allocate a new chunk when there are many,
many free inodes that could be allocated without consuming free
space. This results in speeding up the consumption of the last few
blocks and inode create operations then returning ENOSPC when there
free inodes available because we don't have enough block left in the
filesystem for directory creation reservations to proceed.
Hence when we are near ENOSPC, we should be attempting to preserve
the remaining blocks for directory block allocation rather than
using them for unnecessary inode chunk creation.
This particular behaviour is exposed by xfs/294, when it drives to
ENOSPC on empty file creation whilst there are still thousands of
free inodes available for allocation in other AGs in the filesystem.
Hence, when we are within 1% of ENOSPC, change the inode allocation
behaviour to prefer to use existing free inodes over allocating new
inode chunks, even though it results is poorer locality of the data
set. It is more important for the allocations to be space efficient
near ENOSPC than to have optimal locality for performance, so lets
modify the inode AG selection code to reflect that fact.
This allows generic/294 to not only pass with this allocator rework
patchset, but to increase the number of post-ENOSPC empty inode
allocations to from ~600 to ~9080 before we hit ENOSPC on the
directory create transaction reservation.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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[ Upstream commit 1dd0510f6d4b85616a36aabb9be38389467122d9 ]
I've recently encountered an ABBA deadlock with g/476. The upcoming
changes seem to make this much easier to hit, but the underlying
problem is a pre-existing one.
Essentially, if we select an AG for allocation, then lock the AGF
and then fail to allocate for some reason (e.g. minimum length
requirements cannot be satisfied), then we drop out of the
allocation with the AGF still locked.
The caller then modifies the allocation constraints - usually
loosening them up - and tries again. This can result in trying to
access AGFs that are lower than the AGF we already have locked from
the failed attempt. e.g. the failed attempt skipped several AGs
before failing, so we have locks an AG higher than the start AG.
Retrying the allocation from the start AG then causes us to violate
AGF lock ordering and this can lead to deadlocks.
The deadlock exists even if allocation succeeds - we can do a
followup allocations in the same transaction for BMBT blocks that
aren't guaranteed to be in the same AG as the original, and can move
into higher AGs. Hence we really need to move the tp->t_firstblock
tracking down into xfs_alloc_vextent() where it can be set when we
exit with a locked AG.
xfs_alloc_vextent() can also check there if the requested
allocation falls within the allow range of AGs set by
tp->t_firstblock. If we can't allocate within the range set, we have
to fail the allocation. If we are allowed to to non-blocking AGF
locking, we can ignore the AG locking order limitations as we can
use try-locks for the first iteration over requested AG range.
This invalidates a set of post allocation asserts that check that
the allocation is always above tp->t_firstblock if it is set.
Because we can use try-locks to avoid the deadlock in some
circumstances, having a pre-existing locked AGF doesn't always
prevent allocation from lower order AGFs. Hence those ASSERTs need
to be removed.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit c85007e2e3942da1f9361e4b5a9388ea3a8dcc5b ]
When we split a BMBT due to record insertion, we offload it to a
worker thread because we can be deep in the stack when we try to
allocate a new block for the BMBT. Allocation can use several
kilobytes of stack (full memory reclaim, swap and/or IO path can
end up on the stack during allocation) and we can already be several
kilobytes deep in the stack when we need to split the BMBT.
A recent workload demonstrated a deadlock in this BMBT split
offload. It requires several things to happen at once:
1. two inodes need a BMBT split at the same time, one must be
unwritten extent conversion from IO completion, the other must be
from extent allocation.
2. there must be a no available xfs_alloc_wq worker threads
available in the worker pool.
3. There must be sustained severe memory shortages such that new
kworker threads cannot be allocated to the xfs_alloc_wq pool for
both threads that need split work to be run
4. The split work from the unwritten extent conversion must run
first.
5. when the BMBT block allocation runs from the split work, it must
loop over all AGs and not be able to either trylock an AGF
successfully, or each AGF is is able to lock has no space available
for a single block allocation.
6. The BMBT allocation must then attempt to lock the AGF that the
second task queued to the rescuer thread already has locked before
it finds an AGF it can allocate from.
At this point, we have an ABBA deadlock between tasks queued on the
xfs_alloc_wq rescuer thread and a locked AGF. i.e. The queued task
holding the AGF lock can't be run by the rescuer thread until the
task the rescuer thread is runing gets the AGF lock....
This is a highly improbably series of events, but there it is.
There's a couple of ways to fix this, but the easiest way to ensure
that we only punt tasks with a locked AGF that holds enough space
for the BMBT block allocations to the worker thread.
This works for unwritten extent conversion in IO completion (which
doesn't have a locked AGF and space reservations) because we have
tight control over the IO completion stack. It is typically only 6
functions deep when xfs_btree_split() is called because we've
already offloaded the IO completion work to a worker thread and
hence we don't need to worry about stack overruns here.
The other place we can be called for a BMBT split without a
preceeding allocation is __xfs_bunmapi() when punching out the
center of an existing extent. We don't remove extents in the IO
path, so these operations don't tend to be called with a lot of
stack consumed. Hence we don't really need to ship the split off to
a worker thread in these cases, either.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 601a27ea09a317d0fe2895df7d875381fb393041 ]
In xfs_extent_busy_update_extent() case 6 and 7, whenever bno is modified on
extent busy, the relavent length has to be modified accordingly.
Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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[ Upstream commit 4da112513c01d7d0acf1025b8764349d46e177d6 ]
We are doing a test about deleting a large number of files
when memory is low. A deadlock problem was found.
[ 1240.279183] -> #1 (fs_reclaim){+.+.}-{0:0}:
[ 1240.280450] lock_acquire+0x197/0x460
[ 1240.281548] fs_reclaim_acquire.part.0+0x20/0x30
[ 1240.282625] kmem_cache_alloc+0x2b/0x940
[ 1240.283816] xfs_trans_alloc+0x8a/0x8b0
[ 1240.284757] xfs_inactive_ifree+0xe4/0x4e0
[ 1240.285935] xfs_inactive+0x4e9/0x8a0
[ 1240.286836] xfs_inodegc_worker+0x160/0x5e0
[ 1240.287969] process_one_work+0xa19/0x16b0
[ 1240.289030] worker_thread+0x9e/0x1050
[ 1240.290131] kthread+0x34f/0x460
[ 1240.290999] ret_from_fork+0x22/0x30
[ 1240.291905]
[ 1240.291905] -> #0 ((work_completion)(&gc->work)){+.+.}-{0:0}:
[ 1240.293569] check_prev_add+0x160/0x2490
[ 1240.294473] __lock_acquire+0x2c4d/0x5160
[ 1240.295544] lock_acquire+0x197/0x460
[ 1240.296403] __flush_work+0x6bc/0xa20
[ 1240.297522] xfs_inode_mark_reclaimable+0x6f0/0xdc0
[ 1240.298649] destroy_inode+0xc6/0x1b0
[ 1240.299677] dispose_list+0xe1/0x1d0
[ 1240.300567] prune_icache_sb+0xec/0x150
[ 1240.301794] super_cache_scan+0x2c9/0x480
[ 1240.302776] do_shrink_slab+0x3f0/0xaa0
[ 1240.303671] shrink_slab+0x170/0x660
[ 1240.304601] shrink_node+0x7f7/0x1df0
[ 1240.305515] balance_pgdat+0x766/0xf50
[ 1240.306657] kswapd+0x5bd/0xd20
[ 1240.307551] kthread+0x34f/0x460
[ 1240.308346] ret_from_fork+0x22/0x30
[ 1240.309247]
[ 1240.309247] other info that might help us debug this:
[ 1240.309247]
[ 1240.310944] Possible unsafe locking scenario:
[ 1240.310944]
[ 1240.312379] CPU0 CPU1
[ 1240.313363] ---- ----
[ 1240.314433] lock(fs_reclaim);
[ 1240.315107] lock((work_completion)(&gc->work));
[ 1240.316828] lock(fs_reclaim);
[ 1240.318088] lock((work_completion)(&gc->work));
[ 1240.319203]
[ 1240.319203] *** DEADLOCK ***
...
[ 2438.431081] Workqueue: xfs-inodegc/sda xfs_inodegc_worker
[ 2438.432089] Call Trace:
[ 2438.432562] __schedule+0xa94/0x1d20
[ 2438.435787] schedule+0xbf/0x270
[ 2438.436397] schedule_timeout+0x6f8/0x8b0
[ 2438.445126] wait_for_completion+0x163/0x260
[ 2438.448610] __flush_work+0x4c4/0xa40
[ 2438.455011] xfs_inode_mark_reclaimable+0x6ef/0xda0
[ 2438.456695] destroy_inode+0xc6/0x1b0
[ 2438.457375] dispose_list+0xe1/0x1d0
[ 2438.458834] prune_icache_sb+0xe8/0x150
[ 2438.461181] super_cache_scan+0x2b3/0x470
[ 2438.461950] do_shrink_slab+0x3cf/0xa50
[ 2438.462687] shrink_slab+0x17d/0x660
[ 2438.466392] shrink_node+0x87e/0x1d40
[ 2438.467894] do_try_to_free_pages+0x364/0x1300
[ 2438.471188] try_to_free_pages+0x26c/0x5b0
[ 2438.473567] __alloc_pages_slowpath.constprop.136+0x7aa/0x2100
[ 2438.482577] __alloc_pages+0x5db/0x710
[ 2438.485231] alloc_pages+0x100/0x200
[ 2438.485923] allocate_slab+0x2c0/0x380
[ 2438.486623] ___slab_alloc+0x41f/0x690
[ 2438.490254] __slab_alloc+0x54/0x70
[ 2438.491692] kmem_cache_alloc+0x23e/0x270
[ 2438.492437] xfs_trans_alloc+0x88/0x880
[ 2438.493168] xfs_inactive_ifree+0xe2/0x4e0
[ 2438.496419] xfs_inactive+0x4eb/0x8b0
[ 2438.497123] xfs_inodegc_worker+0x16b/0x5e0
[ 2438.497918] process_one_work+0xbf7/0x1a20
[ 2438.500316] worker_thread+0x8c/0x1060
[ 2438.504938] ret_from_fork+0x22/0x30
When the memory is insufficient, xfs_inonodegc_worker will trigger memory
reclamation when memory is allocated, then flush_work() may be called to
wait for the work to complete. This causes a deadlock.
So use memalloc_nofs_save() to avoid triggering memory reclamation in
xfs_inodegc_worker.
Signed-off-by: Wu Guanghao <wuguanghao3@huawei.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 52f31ed228212ba572c44e15e818a3a5c74122c0 ]
Resulting in a UAF if the shrinker races with some other dquot
freeing mechanism that sets XFS_DQFLAG_FREEING before the dquot is
removed from the LRU. This can occur if a dquot purge races with
drop_caches.
Reported-by: syzbot+912776840162c13db1a3@syzkaller.appspotmail.com
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Acked-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit af77c4fc1871847b528d58b7fdafb4aa1f6a9262 ]
xattr in ocfs2 maybe 'non-indexed', which saved with additional space
requested. It's better to check if the memory is out of bound before
memcmp, although this possibility mainly comes from crafted poisonous
images.
Link: https://lkml.kernel.org/r/20240520024024.1976129-2-joseph.qi@linux.alibaba.com
Signed-off-by: Ferry Meng <mengferry@linux.alibaba.com>
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reported-by: lei lu <llfamsec@gmail.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Jun Piao <piaojun@huawei.com>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Mark Fasheh <mark@fasheh.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 9e3041fecdc8f78a5900c3aa51d3d756e73264d6 ]
Add a paranoia check to make sure it doesn't stray beyond valid memory
region containing ocfs2 xattr entries when scanning for a match. It will
prevent out-of-bound access in case of crafted images.
Link: https://lkml.kernel.org/r/20240520024024.1976129-1-joseph.qi@linux.alibaba.com
Signed-off-by: Ferry Meng <mengferry@linux.alibaba.com>
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reported-by: lei lu <llfamsec@gmail.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Stable-dep-of: af77c4fc1871 ("ocfs2: strict bound check before memcmp in ocfs2_xattr_find_entry()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 5478a4f7b94414def7b56d2f18bc2ed9b0f3f1f2 ]
When the of_device_id entry for "elgin,jg10309-01" was added, the
corresponding spi_device_id was forgotten, causing a warning message
during boot-up:
SPI driver spidev has no spi_device_id for elgin,jg10309-01
Fix module autoloading and shut up the warning by adding the missing
entry.
Fixes: 5f3eee1eef5d0edd ("spi: spidev: Add an entry for elgin,jg10309-01")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/54bbb9d8a8db7e52d13e266f2d4a9bcd8b42a98a.1725366625.git.geert+renesas@glider.be
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit f3c89983cb4fc00be64eb0d5cbcfcdf2cacb965e ]
Commit 82b74cac2849 ("blk-ioprio: Convert from rqos policy to direct
call") pushed setting bio I/O priority down into blk_mq_submit_bio()
-- which is too low within block core's submit_bio() because it
skips setting I/O priority for block drivers that implement
fops->submit_bio() (e.g. DM, MD, etc).
Fix this by moving bio_set_ioprio() up from blk-mq.c to blk-core.c and
call it from submit_bio(). This ensures all block drivers call
bio_set_ioprio() during initial bio submission.
Fixes: a78418e6a04c ("block: Always initialize bio IO priority on submit")
Co-developed-by: Yibin Ding <yibin.ding@unisoc.com>
Signed-off-by: Yibin Ding <yibin.ding@unisoc.com>
Signed-off-by: Hongyu Jin <hongyu.jin@unisoc.com>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Mikulas Patocka <mpatocka@redhat.com>
[snitzer: revised commit header]
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20240130202638.62600-2-snitzer@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 5e5cc1eb65256e6017e3deec04f9806f2f317853 ]
rm .*.cmd when make clean
Signed-off-by: zhang jiao <zhangjiao2@cmss.chinamobile.com>
Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Link: https://lore.kernel.org/r/20240902042103.5867-1-zhangjiao2@cmss.chinamobile.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <20240902042103.5867-1-zhangjiao2@cmss.chinamobile.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 8fcc514809de41153b43ccbe1a0cdf7f72b78e7e ]
A Linux guest on Hyper-V gets the TSC frequency from a synthetic MSR, if
available. In this case, set X86_FEATURE_TSC_KNOWN_FREQ so that Linux
doesn't unnecessarily do refined TSC calibration when setting up the TSC
clocksource.
With this change, a message such as this is no longer output during boot
when the TSC is used as the clocksource:
[ 1.115141] tsc: Refined TSC clocksource calibration: 2918.408 MHz
Furthermore, the guest and host will have exactly the same view of the
TSC frequency, which is important for features such as the TSC deadline
timer that are emulated by the Hyper-V host.
Signed-off-by: Michael Kelley <mhklinux@outlook.com>
Reviewed-by: Roman Kisel <romank@linux.microsoft.com>
Link: https://lore.kernel.org/r/20240606025559.1631-1-mhklinux@outlook.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <20240606025559.1631-1-mhklinux@outlook.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 7ccc1465465d78e6411b7bd730d06e7435802b5c ]
Call cifs_reconnect() to wake up processes waiting on negotiate
protocol to handle the case where server abruptly shut down and had no
chance to properly close the socket.
Simple reproducer:
ssh 192.168.2.100 pkill -STOP smbd
mount.cifs //192.168.2.100/test /mnt -o ... [never returns]
Cc: Rickard Andersson <rickaran@axis.com>
Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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