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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char / misc driver fixes from Greg KH:
"Here are some small fixes for 6.7-rc5 for a variety of small driver
subsystems. Included in here are:
- debugfs revert for reported issue
- greybus revert for reported issue
- greybus fixup for endian build warning
- coresight driver fixes
- nvmem driver fixes
- devcoredump fix
- parport new device id
- ndtest build fix
All of these have ben in linux-next with no reported issues"
* tag 'char-misc-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
nvmem: Do not expect fixed layouts to grab a layout driver
parport: Add support for Brainboxes IX/UC/PX parallel cards
Revert "greybus: gb-beagleplay: Ensure le for values in transport"
greybus: gb-beagleplay: Ensure le for values in transport
greybus: BeaglePlay driver needs CRC_CCITT
Revert "debugfs: annotate debugfs handlers vs. removal with lockdep"
devcoredump: Send uevent once devcd is ready
ndtest: fix typo class_regster -> class_register
misc: mei: client.c: fix problem of return '-EOVERFLOW' in mei_cl_write
misc: mei: client.c: return negative error code in mei_cl_write
mei: pxp: fix mei_pxp_send_message return value
coresight: ultrasoc-smb: Fix uninitialized before use buf_hw_base
coresight: ultrasoc-smb: Config SMB buffer before register sink
coresight: ultrasoc-smb: Fix sleep while close preempt in enable_smb
Documentation: coresight: fix `make refcheckdocs` warning
hwtracing: hisi_ptt: Don't try to attach a task
hwtracing: hisi_ptt: Handle the interrupt in hardirq context
hwtracing: hisi_ptt: Add dummy callback pmu::read()
coresight: Fix crash when Perf and sysfs modes are used concurrently
coresight: etm4x: Remove bogous __exit annotation for some functions
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This reverts commit f4acfcd4deb1 ("debugfs: annotate debugfs handlers
vs. removal with lockdep"), it appears to have false positives and
really shouldn't have been in the -rc series with the fixes anyway.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20231202114936.fd55431ab160.I911aa53abeeca138126f690d383a89b13eb05667@changeid
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Pull smb client fixes from Steve French:
"Six smb3 client fixes:
- Fixes for copy_file_range and clone (cache invalidation and file
size), also addresses an xfstest failure
- Fix to return proper error if REMAP_FILE_DEDUP set (also fixes
xfstest generic/304)
- Fix potential null pointer reference with DFS
- Multichannel fix addressing (reverting an earlier patch) some of
the problems with enabling/disabling channels dynamically
Still working on a followon multichannel fix to address another issue
found in reconnect testing that will send next week"
* tag '6.7-rc4-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: reconnect worker should take reference on server struct unconditionally
Revert "cifs: reconnect work should have reference on server struct"
cifs: Fix non-availability of dedup breaking generic/304
smb: client: fix potential NULL deref in parse_dfs_referrals()
cifs: Fix flushing, invalidation and file size with FICLONE
cifs: Fix flushing, invalidation and file size with copy_file_range()
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Reconnect worker currently assumes that the server struct
is alive and only takes reference on the server if it needs
to call smb2_reconnect.
With the new ability to disable channels based on whether the
server has multichannel disabled, this becomes a problem when
we need to disable established channels. While disabling the
channels and deallocating the server, there could be reconnect
work that could not be cancelled (because it started).
This change forces the reconnect worker to unconditionally
take a reference on the server when it runs.
Also, this change now allows smb2_reconnect to know if it was
called by the reconnect worker. Based on this, the cifs_put_tcp_session
can decide whether it can cancel the reconnect work synchronously or not.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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This reverts commit 19a4b9d6c372cab6a3b2c9a061a236136fe95274.
This earlier commit was making an assumption that each mod_delayed_work
called for the reconnect work would result in smb2_reconnect_server
being called twice. This assumption turns out to be untrue. So reverting
this change for now.
I will submit a follow-up patch to fix the actual problem in a different
way.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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Deduplication isn't supported on cifs, but cifs doesn't reject it, instead
treating it as extent duplication/cloning. This can cause generic/304 to go
silly and run for hours on end.
Fix cifs to indicate EOPNOTSUPP if REMAP_FILE_DEDUP is set in
->remap_file_range().
Note that it's unclear whether or not commit b073a08016a1 is meant to cause
cifs to return an error if REMAP_FILE_DEDUP.
Fixes: b073a08016a1 ("cifs: fix that return -EINVAL when do dedupe operation")
Cc: stable@vger.kernel.org
Suggested-by: Dave Chinner <david@fromorbit.com>
cc: Xiaoli Feng <fengxiaoli0714@gmail.com>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: Rohith Surabattula <rohiths.msft@gmail.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: Darrick Wong <darrick.wong@oracle.com>
cc: fstests@vger.kernel.org
cc: linux-cifs@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
Link: https://lore.kernel.org/r/3876191.1701555260@warthog.procyon.org.uk/
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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If server returned no data for FSCTL_DFS_GET_REFERRALS, @dfs_rsp will
remain NULL and then parse_dfs_referrals() will dereference it.
Fix this by returning -EIO when no output data is returned.
Besides, we can't fix it in SMB2_ioctl() as some FSCTLs are allowed to
return no data as per MS-SMB2 2.2.32.
Fixes: 9d49640a21bf ("CIFS: implement get_dfs_refer for SMB2+")
Cc: stable@vger.kernel.org
Reported-by: Robert Morris <rtm@csail.mit.edu>
Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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Fix a number of issues in the cifs filesystem implementation of the FICLONE
ioctl in cifs_remap_file_range(). This is analogous to the previously
fixed bug in cifs_file_copychunk_range() and can share the helper
functions.
Firstly, the invalidation of the destination range is handled incorrectly:
We shouldn't just invalidate the whole file as dirty data in the file may
get lost and we can't just call truncate_inode_pages_range() to invalidate
the destination range as that will erase parts of a partial folio at each
end whilst invalidating and discarding all the folios in the middle. We
need to force all the folios covering the range to be reloaded, but we
mustn't lose dirty data in them that's not in the destination range.
Further, we shouldn't simply round out the range to PAGE_SIZE at each end
as cifs should move to support multipage folios.
Secondly, there's an issue whereby a write may have extended the file
locally, but not have been written back yet. This can leaves the local
idea of the EOF at a later point than the server's EOF. If a clone request
is issued, this will fail on the server with STATUS_INVALID_VIEW_SIZE
(which gets translated to -EIO locally) if the clone source extends past
the server's EOF.
Fix this by:
(0) Flush the source region (already done). The flush does nothing and
the EOF isn't moved if the source region has no dirty data.
(1) Move the EOF to the end of the source region if it isn't already at
least at this point. If we can't do this, for instance if the server
doesn't support it, just flush the entire source file.
(2) Find the folio (if present) at each end of the range, flushing it and
increasing the region-to-be-invalidated to cover those in their
entirety.
(3) Fully discard all the folios covering the range as we want them to be
reloaded.
(4) Then perform the extent duplication.
Thirdly, set i_size after doing the duplicate_extents operation as this
value may be used by various things internally. stat() hides the issue
because setting ->time to 0 causes cifs_getatr() to revalidate the
attributes.
These were causing the cifs/001 xfstest to fail.
Fixes: 04b38d601239 ("vfs: pull btrfs clone API to vfs layer")
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: stable@vger.kernel.org
cc: Christoph Hellwig <hch@lst.de>
cc: Paulo Alcantara <pc@manguebit.com>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: Rohith Surabattula <rohiths.msft@gmail.com>
cc: Matthew Wilcox <willy@infradead.org>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cifs@vger.kernel.org
cc: linux-mm@kvack.org
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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Fix a number of issues in the cifs filesystem implementation of the
copy_file_range() syscall in cifs_file_copychunk_range().
Firstly, the invalidation of the destination range is handled incorrectly:
We shouldn't just invalidate the whole file as dirty data in the file may
get lost and we can't just call truncate_inode_pages_range() to invalidate
the destination range as that will erase parts of a partial folio at each
end whilst invalidating and discarding all the folios in the middle. We
need to force all the folios covering the range to be reloaded, but we
mustn't lose dirty data in them that's not in the destination range.
Further, we shouldn't simply round out the range to PAGE_SIZE at each end
as cifs should move to support multipage folios.
Secondly, there's an issue whereby a write may have extended the file
locally, but not have been written back yet. This can leaves the local
idea of the EOF at a later point than the server's EOF. If a copy request
is issued, this will fail on the server with STATUS_INVALID_VIEW_SIZE
(which gets translated to -EIO locally) if the copy source extends past the
server's EOF.
Fix this by:
(0) Flush the source region (already done). The flush does nothing and
the EOF isn't moved if the source region has no dirty data.
(1) Move the EOF to the end of the source region if it isn't already at
least at this point. If we can't do this, for instance if the server
doesn't support it, just flush the entire source file.
(2) Find the folio (if present) at each end of the range, flushing it and
increasing the region-to-be-invalidated to cover those in their
entirety.
(3) Fully discard all the folios covering the range as we want them to be
reloaded.
(4) Then perform the copy.
Thirdly, set i_size after doing the copychunk_range operation as this value
may be used by various things internally. stat() hides the issue because
setting ->time to 0 causes cifs_getatr() to revalidate the attributes.
These were causing the generic/075 xfstest to fail.
Fixes: 620d8745b35d ("Introduce cifs_copy_file_range()")
Cc: stable@vger.kernel.org
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Paulo Alcantara <pc@manguebit.com>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: Rohith Surabattula <rohiths.msft@gmail.com>
cc: Matthew Wilcox <willy@infradead.org>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cifs@vger.kernel.org
cc: linux-mm@kvack.org
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"31 hotfixes. Ten of these address pre-6.6 issues and are marked
cc:stable. The remainder address post-6.6 issues or aren't considered
serious enough to justify backporting"
* tag 'mm-hotfixes-stable-2023-12-07-18-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (31 commits)
mm/madvise: add cond_resched() in madvise_cold_or_pageout_pte_range()
nilfs2: prevent WARNING in nilfs_sufile_set_segment_usage()
mm/hugetlb: have CONFIG_HUGETLB_PAGE select CONFIG_XARRAY_MULTI
scripts/gdb: fix lx-device-list-bus and lx-device-list-class
MAINTAINERS: drop Antti Palosaari
highmem: fix a memory copy problem in memcpy_from_folio
nilfs2: fix missing error check for sb_set_blocksize call
kernel/Kconfig.kexec: drop select of KEXEC for CRASH_DUMP
units: add missing header
drivers/base/cpu: crash data showing should depends on KEXEC_CORE
mm/damon/sysfs-schemes: add timeout for update_schemes_tried_regions
scripts/gdb/tasks: fix lx-ps command error
mm/Kconfig: make userfaultfd a menuconfig
selftests/mm: prevent duplicate runs caused by TEST_GEN_PROGS
mm/damon/core: copy nr_accesses when splitting region
lib/group_cpus.c: avoid acquiring cpu hotplug lock in group_cpus_evenly
checkstack: fix printed address
mm/memory_hotplug: fix error handling in add_memory_resource()
mm/memory_hotplug: add missing mem_hotplug_lock
.mailmap: add a new address mapping for Chester Lin
...
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If nilfs2 reads a disk image with corrupted segment usage metadata, and
its segment usage information is marked as an error for the segment at the
write location, nilfs_sufile_set_segment_usage() can trigger WARN_ONs
during log writing.
Segments newly allocated for writing with nilfs_sufile_alloc() will not
have this error flag set, but this unexpected situation will occur if the
segment indexed by either nilfs->ns_segnum or nilfs->ns_nextnum (active
segment) was marked in error.
Fix this issue by inserting a sanity check to treat it as a file system
corruption.
Since error returns are not allowed during the execution phase where
nilfs_sufile_set_segment_usage() is used, this inserts the sanity check
into nilfs_sufile_mark_dirty() which pre-reads the buffer containing the
segment usage record to be updated and sets it up in a dirty state for
writing.
In addition, nilfs_sufile_set_segment_usage() is also called when
canceling log writing and undoing segment usage update, so in order to
avoid issuing the same kernel warning in that case, in case of
cancellation, avoid checking the error flag in
nilfs_sufile_set_segment_usage().
Link: https://lkml.kernel.org/r/20231205085947.4431-1-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: syzbot+14e9f834f6ddecece094@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=14e9f834f6ddecece094
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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After commit a08c7193e4f1 "mm/filemap: remove hugetlb special casing in
filemap.c", hugetlb pages are stored in the page cache in base page sized
indexes. This leads to multi index stores in the xarray which is only
supporting through CONFIG_XARRAY_MULTI. The other page cache user of
multi index stores ,THP, selects XARRAY_MULTI. Have CONFIG_HUGETLB_PAGE
follow this behavior as well to avoid the BUG() with a CONFIG_HUGETLB_PAGE
&& !CONFIG_XARRAY_MULTI config.
Link: https://lkml.kernel.org/r/20231204183234.348697-1-sidhartha.kumar@oracle.com
Fixes: a08c7193e4f1 ("mm/filemap: remove hugetlb special casing in filemap.c")
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Muchun Song <muchun.song@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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When mounting a filesystem image with a block size larger than the page
size, nilfs2 repeatedly outputs long error messages with stack traces to
the kernel log, such as the following:
getblk(): invalid block size 8192 requested
logical block size: 512
...
Call Trace:
dump_stack_lvl+0x92/0xd4
dump_stack+0xd/0x10
bdev_getblk+0x33a/0x354
__breadahead+0x11/0x80
nilfs_search_super_root+0xe2/0x704 [nilfs2]
load_nilfs+0x72/0x504 [nilfs2]
nilfs_mount+0x30f/0x518 [nilfs2]
legacy_get_tree+0x1b/0x40
vfs_get_tree+0x18/0xc4
path_mount+0x786/0xa88
__ia32_sys_mount+0x147/0x1a8
__do_fast_syscall_32+0x56/0xc8
do_fast_syscall_32+0x29/0x58
do_SYSENTER_32+0x15/0x18
entry_SYSENTER_32+0x98/0xf1
...
This overloads the system logger. And to make matters worse, it sometimes
crashes the kernel with a memory access violation.
This is because the return value of the sb_set_blocksize() call, which
should be checked for errors, is not checked.
The latter issue is due to out-of-buffer memory being accessed based on a
large block size that caused sb_set_blocksize() to fail for buffers read
with the initial minimum block size that remained unupdated in the
super_block structure.
Since nilfs2 mkfs tool does not accept block sizes larger than the system
page size, this has been overlooked. However, it is possible to create
this situation by intentionally modifying the tool or by passing a
filesystem image created on a system with a large page size to a system
with a smaller page size and mounting it.
Fix this issue by inserting the expected error handling for the call to
sb_set_blocksize().
Link: https://lkml.kernel.org/r/20231129141547.4726-1-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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When the length passed in is 0, the pagemap_scan_test_walk() caller should
bail. This error causes at least a WARN_ON().
Link: https://lkml.kernel.org/r/20231116031352.40853-1-lizhi.xu@windriver.com
Reported-by: syzbot+32d3767580a1ea339a81@syzkaller.appspotmail.com
Closes: https://lkml.kernel.org/r/0000000000000526f2060a30a085@google.com
Signed-off-by: Lizhi Xu <lizhi.xu@windriver.com>
Reviewed-by: Phillip Lougher <phillip@squashfs.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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The new pagemap ioctl contains a fast path for wr-protections without
looking into category masks. It forgets to check PM_SCAN_WP_MATCHING
before applying the wr-protections. It can cause, e.g., pte markers
installed on archs that do not even support uffd wr-protect.
WARNING: CPU: 0 PID: 5059 at mm/memory.c:1520 zap_pte_range mm/memory.c:1520 [inline]
Link: https://lkml.kernel.org/r/20231116201547.536857-3-peterx@redhat.com
Fixes: 12f6b01a0bcb ("fs/proc/task_mmu: add fast paths to get/clear PAGE_IS_WRITTEN flag")
Signed-off-by: Peter Xu <peterx@redhat.com>
Reported-by: syzbot+7ca4b2719dc742b8d0a4@syzkaller.appspotmail.com
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Andrei Vagin <avagin@gmail.com>
Cc: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Patch series "mm/pagemap: A few fixes to the recent PAGEMAP_SCAN".
This series should fix two known reports from syzbot on the new
PAGEMAP_SCAN ioctl():
https://lore.kernel.org/all/000000000000b0e576060a30ee3b@google.com/
https://lore.kernel.org/all/000000000000773fa7060a31e2cc@google.com/
The 3rd patch is something I found when testing these patches.
This patch (of 3):
The new ioctl(PAGEMAP_SCAN) relies on vma wr-protect capability provided
by userfault, however in the vma test it didn't explicitly require the vma
to have wr-protect function enabled, even if PM_SCAN_WP_MATCHING flag is
set.
It means the pagemap code can now apply uffd-wp bit to a page in the vma
even if not registered to userfaultfd at all.
Then in whatever way as long as the pte got written and page fault
resolved, we'll apply the write bit even if uffd-wp bit is set. We'll see
a pte that has both UFFD_WP and WRITE bit set. Anything later that looks
up the pte for uffd-wp bit will trigger the warning:
WARNING: CPU: 1 PID: 5071 at arch/x86/include/asm/pgtable.h:403 pte_uffd_wp arch/x86/include/asm/pgtable.h:403 [inline]
Fix it by doing proper check over the vma attributes when
PM_SCAN_WP_MATCHING is specified.
Link: https://lkml.kernel.org/r/20231116201547.536857-1-peterx@redhat.com
Link: https://lkml.kernel.org/r/20231116201547.536857-2-peterx@redhat.com
Fixes: 52526ca7fdb9 ("fs/proc/task_mmu: implement IOCTL to get and optionally clear info about PTEs")
Signed-off-by: Peter Xu <peterx@redhat.com>
Reported-by: syzbot+e94c5aaf7890901ebf9b@syzkaller.appspotmail.com
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Andrei Vagin <avagin@gmail.com>
Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Pull smb client fixes from Steve French:
- Two fallocate fixes
- Fix warnings from new gcc
- Two symlink fixes
* tag 'v6.7-rc3-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
smb: client, common: fix fortify warnings
cifs: Fix FALLOC_FL_INSERT_RANGE by setting i_size after EOF moved
cifs: Fix FALLOC_FL_ZERO_RANGE by setting i_size if EOF moved
smb: client: report correct st_size for SMB and NFS symlinks
smb: client: fix missing mode bits for SMB symlinks
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When compiling with gcc version 14.0.0 20231126 (experimental)
and CONFIG_FORTIFY_SOURCE=y, I've noticed the following:
In file included from ./include/linux/string.h:295,
from ./include/linux/bitmap.h:12,
from ./include/linux/cpumask.h:12,
from ./arch/x86/include/asm/paravirt.h:17,
from ./arch/x86/include/asm/cpuid.h:62,
from ./arch/x86/include/asm/processor.h:19,
from ./arch/x86/include/asm/cpufeature.h:5,
from ./arch/x86/include/asm/thread_info.h:53,
from ./include/linux/thread_info.h:60,
from ./arch/x86/include/asm/preempt.h:9,
from ./include/linux/preempt.h:79,
from ./include/linux/spinlock.h:56,
from ./include/linux/wait.h:9,
from ./include/linux/wait_bit.h:8,
from ./include/linux/fs.h:6,
from fs/smb/client/smb2pdu.c:18:
In function 'fortify_memcpy_chk',
inlined from '__SMB2_close' at fs/smb/client/smb2pdu.c:3480:4:
./include/linux/fortify-string.h:588:25: warning: call to '__read_overflow2_field'
declared with attribute warning: detected read beyond size of field (2nd parameter);
maybe use struct_group()? [-Wattribute-warning]
588 | __read_overflow2_field(q_size_field, size);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
and:
In file included from ./include/linux/string.h:295,
from ./include/linux/bitmap.h:12,
from ./include/linux/cpumask.h:12,
from ./arch/x86/include/asm/paravirt.h:17,
from ./arch/x86/include/asm/cpuid.h:62,
from ./arch/x86/include/asm/processor.h:19,
from ./arch/x86/include/asm/cpufeature.h:5,
from ./arch/x86/include/asm/thread_info.h:53,
from ./include/linux/thread_info.h:60,
from ./arch/x86/include/asm/preempt.h:9,
from ./include/linux/preempt.h:79,
from ./include/linux/spinlock.h:56,
from ./include/linux/wait.h:9,
from ./include/linux/wait_bit.h:8,
from ./include/linux/fs.h:6,
from fs/smb/client/cifssmb.c:17:
In function 'fortify_memcpy_chk',
inlined from 'CIFS_open' at fs/smb/client/cifssmb.c:1248:3:
./include/linux/fortify-string.h:588:25: warning: call to '__read_overflow2_field'
declared with attribute warning: detected read beyond size of field (2nd parameter);
maybe use struct_group()? [-Wattribute-warning]
588 | __read_overflow2_field(q_size_field, size);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In both cases, the fortification logic inteprets calls to 'memcpy()' as an
attempts to copy an amount of data which exceeds the size of the specified
field (i.e. more than 8 bytes from __le64 value) and thus issues an overread
warning. Both of these warnings may be silenced by using the convenient
'struct_group()' quirk.
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
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Fix the cifs filesystem implementations of FALLOC_FL_INSERT_RANGE, in
smb3_insert_range(), to set i_size after extending the file on the server
and before we do the copy to open the gap (as we don't clean up the EOF
marker if the copy fails).
Fixes: 7fe6fe95b936 ("cifs: add FALLOC_FL_INSERT_RANGE support")
Cc: stable@vger.kernel.org
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Paulo Alcantara <pc@manguebit.com>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: Rohith Surabattula <rohiths.msft@gmail.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cifs@vger.kernel.org
cc: linux-mm@kvack.org
Signed-off-by: Steve French <stfrench@microsoft.com>
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Fix the cifs filesystem implementations of FALLOC_FL_ZERO_RANGE, in
smb3_zero_range(), to set i_size after extending the file on the server.
Fixes: 72c419d9b073 ("cifs: fix smb3_zero_range so it can expand the file-size when required")
Cc: stable@vger.kernel.org
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Paulo Alcantara <pc@manguebit.com>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: Rohith Surabattula <rohiths.msft@gmail.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cifs@vger.kernel.org
cc: linux-mm@kvack.org
Signed-off-by: Steve French <stfrench@microsoft.com>
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We can't rely on FILE_STANDARD_INFORMATION::EndOfFile for reparse
points as they will be always zero. Set it to symlink target's length
as specified by POSIX.
This will make stat() family of syscalls return the correct st_size
for such files.
Cc: stable@vger.kernel.org
Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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When instantiating inodes for SMB symlinks, add the mode bits from
@cifs_sb->ctx->file_mode as we already do for the other special files.
Cc: stable@vger.kernel.org
Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull ext2 fix from Jan Kara:
"Fix an ext2 bug introduced by changes in ext2 & iomap stepping on each
other toes (apparently ext2 driver does not get much testing in
linux-next)"
* tag 'fs_for_v6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
ext2: Fix ki_pos update for DIO buffered-io fallback case
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Commit "filemap: update ki_pos in generic_perform_write", made updating
of ki_pos into common code in generic_perform_write() function.
This also causes generic/091 to fail.
This happened due to an in-flight collision with:
fb5de4358e1a ("ext2: Move direct-io to use iomap"). I have chosen fixes tag
based on which commit got landed later to upstream kernel.
Fixes: 182c25e9c157 ("filemap: update ki_pos in generic_perform_write")
Cc: stable@vger.kernel.org
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Message-Id: <d595bee9f2475ed0e8a2e7fb94f7afc2c6ffc36a.1700643443.git.ritesh.list@gmail.com>
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Pull more bcachefs bugfixes from Kent Overstreet:
- bcache & bcachefs were broken with CFI enabled; patch for closures to
fix type punning
- mark erasure coding as extra-experimental; there are incompatible
disk space accounting changes coming for erasure coding, and I'm
still seeing checksum errors in some tests
- several fixes for durability-related issues (durability is a device
specific setting where we can tell bcachefs that data on a given
device should be counted as replicated x times)
- a fix for a rare livelock when a btree node merge then updates a
parent node that is almost full
- fix a race in the device removal path, where dropping a pointer in a
btree node to a device would be clobbered by an in flight btree write
updating the btree node key on completion
- fix one SRCU lock hold time warning in the btree gc code - ther's
still a bunch more of these to fix
- fix a rare race where we'd start copygc before initializing the "are
we rw" percpu refcount; copygc would think we were already ro and die
immediately
* tag 'bcachefs-2023-11-29' of https://evilpiepirate.org/git/bcachefs: (23 commits)
bcachefs: Extra kthread_should_stop() calls for copygc
bcachefs: Convert gc_alloc_start() to for_each_btree_key2()
bcachefs: Fix race between btree writes and metadata drop
bcachefs: move journal seq assertion
bcachefs: -EROFS doesn't count as move_extent_start_fail
bcachefs: trace_move_extent_start_fail() now includes errcode
bcachefs: Fix split_race livelock
bcachefs: Fix bucket data type for stripe buckets
bcachefs: Add missing validation for jset_entry_data_usage
bcachefs: Fix zstd compress workspace size
bcachefs: bpos is misaligned on big endian
bcachefs: Fix ec + durability calculation
bcachefs: Data update path won't accidentaly grow replicas
bcachefs: deallocate_extra_replicas()
bcachefs: Proper refcounting for journal_keys
bcachefs: preserve device path as device name
bcachefs: Fix an endianness conversion
bcachefs: Start gc, copygc, rebalance threads after initing writes ref
bcachefs: Don't stop copygc thread on device resize
bcachefs: Make sure bch2_move_ratelimit() also waits for move_ops
...
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This fixes a bug where going read-only was taking longer than it should
have due to copygc forgetting to check kthread_should_stop()
Additionally: fix a missing is_kthread check in bch2_move_ratelimit().
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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This eliminates some SRCU warnings: for_each_btree_key2() runs every
loop iteration in a distinct transaction context.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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btree writes update the btree node key after every write, in order to
update sectors_written, and they also might need to drop pointers if one
of the writes failed in a replicated btree node.
But the btree node might also have had a pointer dropped while the write
was in flight, by bch2_dev_metadata_drop(), and thus there was a bug
where the btree node write would ovewrite the btree node's key with what
it had at the start of the write.
Fix this by dropping pointers not currently in the btree node key.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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journal_cur_seq() can legitimately be used outside of the journal lock,
where this assert can race
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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The automated tests check if we've hit too many slowpath/error path
events and fail the test - if we're just shutting down, that naturally
shouldn't count.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Renamed from trace_move_extent_alloc_mem_fail, because there are other
reasons we colud fail (disk space allocation failure).
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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bch2_btree_update_start() calculates which nodes are going to have to be
split/rewritten, so that we know how many nodes to reserve and how deep
in the tree we have to take locks.
But btree node merges require inserting two keys into the parent node,
not just splits.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Validation was completely missing for replicas entries in the journal
(not the superblock replicas section) - we can't have replicas entries
pointing to invalid devices.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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zstd apparently lies about the size of the compression workspace it
requires; if we double it compression succeeds.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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bkey embeds a bpos that is misaligned on big endian; this is so that
bch2_bkey_swab() works correctly without having to differentiate between
packed and non-packed keys (a debatable design decision).
This means it can't have the __aligned() tag on big endian.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Durability of an erasure coded pointer doesn't add the device
durability; durability is the same for any extent in that stripe so the
calculation only comes from the stripe.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Previously, there was a bug where if an extent had greater durability
than required (because we needed to move a durability=1 pointer and
ended up putting it on a durability 2 device), we would submit a write
for replicas=2 - the durability of the pointer being rewritten - instead
of the number of replicas required to bring it back up to the
data_replicas option.
This, plus the allocation path sometimes allocating on a greater
durability device than requested, meant that extents could continue
having more and more replicas added as they were being rewritten.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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When allocating from devices with different durability, we might end up
with more replicas than required; this changes
bch2_alloc_sectors_start() to check for this, and drop replicas that
aren't needed to hit the number of replicas requested.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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The btree iterator code overlays keys from the journal until journal
replay is finished; since we're now starting copygc/rebalance etc.
before replay is finished, this is multithreaded access and thus needs
refcounting.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Various userspace scripts/tools may expect mount entries in
/proc/mounts to reflect the device path names used to mount the
associated filesystem. bcachefs seems to normalize the device path
to the underlying device name based on the block device. This
confuses tools like fstests when the test devices might be lvm or
device-mapper based.
The default behavior for show_vfsmnt() appers to be to use the
string passed to alloc_vfsmnt(), so tweak bcachefs to copy the path
at device superblock read time and to display it via
->show_devname().
Signed-off-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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cpu_to_le32(), not le32_to_cpu() - fixes a sparse complaint.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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This fixes a bug where copygc would occasionally race with going
read-write and die, thinking we were read only, because it couldn't take
a ref on c->writes.
It's not necessary for copygc (or rebalance, or copygc) to take write
refs; they could run with BCH_TRANS_COMMIT_nocheck_rw, but this is an
easier fix that making sure that flag is passed correctly everywhere.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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copygc no longer has to scan the buckets, so it's no longer a problem if
the number of buckets is changing while it's running.
This also fixes a bug where we forgot to restart copygc.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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This adds move_ctxt_wait_event_timeout(), which can sleep for a timeout
while also issueing pending moves as reads complete.
Co-developed-by: Daniel Hill <daniel@gluo.nz>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Introduce a new helper to flush all move IOs, and use it in a few places
where we should have been.
The new helper also drops btree locks before waiting on outstanding move
writes, avoiding potential deadlocks.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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We still have disk space accounting changes coming for erasure coding,
and the changes won't be as strictly backwards compatible as they'd
ought to be - specifically, we need to start accounting striped data
under a separate counter in bch_alloc (which describes buckets).
A fsck will suffice for upgrading/downgrading, but since erasure coding
is the most incomplete major feature of bcachefs it still makes sense to
put behind a separate kconfig option, so that users are fully aware.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Control flow integrity is now checking that type signatures match on
indirect function calls. That breaks closures, which embed a work_struct
in a closure in such a way that a closure_fn may also be used as a
workqueue fn by the underlying closure code.
So we have to change closure fns to take a work_struct as their
argument - but that results in a loss of clarity, as closure fns have
different semantics from normal workqueue functions (they run owning a
ref on the closure, which must be released with continue_at() or
closure_return()).
Thus, this patc introduces CLOSURE_CALLBACK() and closure_type() macros
as suggested by Kees, to smooth things over a bit.
Suggested-by: Kees Cook <keescook@chromium.org>
Cc: Coly Li <colyli@suse.de>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from bpf and wifi.
Current release - regressions:
- neighbour: fix __randomize_layout crash in struct neighbour
- r8169: fix deadlock on RTL8125 in jumbo mtu mode
Previous releases - regressions:
- wifi:
- mac80211: fix warning at station removal time
- cfg80211: fix CQM for non-range use
- tools: ynl-gen: fix unexpected response handling
- octeontx2-af: fix possible buffer overflow
- dpaa2: recycle the RX buffer only after all processing done
- rswitch: fix missing dev_kfree_skb_any() in error path
Previous releases - always broken:
- ipv4: fix uaf issue when receiving igmp query packet
- wifi: mac80211: fix debugfs deadlock at device removal time
- bpf:
- sockmap: af_unix stream sockets need to hold ref for pair sock
- netdevsim: don't accept device bound programs
- selftests: fix a char signedness issue
- dsa: mv88e6xxx: fix marvell 6350 probe crash
- octeontx2-pf: restore TC ingress police rules when interface is up
- wangxun: fix memory leak on msix entry
- ravb: keep reverse order of operations in ravb_remove()"
* tag 'net-6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (51 commits)
net: ravb: Keep reverse order of operations in ravb_remove()
net: ravb: Stop DMA in case of failures on ravb_open()
net: ravb: Start TX queues after HW initialization succeeded
net: ravb: Make write access to CXR35 first before accessing other EMAC registers
net: ravb: Use pm_runtime_resume_and_get()
net: ravb: Check return value of reset_control_deassert()
net: libwx: fix memory leak on msix entry
ice: Fix VF Reset paths when interface in a failed over aggregate
bpf, sockmap: Add af_unix test with both sockets in map
bpf, sockmap: af_unix stream sockets need to hold ref for pair sock
tools: ynl-gen: always construct struct ynl_req_state
ethtool: don't propagate EOPNOTSUPP from dumps
ravb: Fix races between ravb_tx_timeout_work() and net related ops
r8169: prevent potential deadlock in rtl8169_close
r8169: fix deadlock on RTL8125 in jumbo mtu mode
neighbour: Fix __randomize_layout crash in struct neighbour
octeontx2-pf: Restore TC ingress police rules when interface is up
octeontx2-pf: Fix adding mbox work queue entry when num_vfs > 64
net: stmmac: xgmac: Disable FPE MMC interrupts
octeontx2-af: Fix possible buffer overflow
...
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git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless
Johannes Berg says:
====================
wireless fixes:
- debugfs had a deadlock (removal vs. use of files),
fixes going through wireless ACKed by Greg
- support for HT STAs on 320 MHz channels, even if it's
not clear that should ever happen (that's 6 GHz), best
not to WARN()
- fix for the previous CQM fix that broke most cases
- various wiphy locking fixes
- various small driver fixes
* tag 'wireless-2023-11-29' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless:
wifi: mac80211: use wiphy locked debugfs for sdata/link
wifi: mac80211: use wiphy locked debugfs helpers for agg_status
wifi: cfg80211: add locked debugfs wrappers
debugfs: add API to allow debugfs operations cancellation
debugfs: annotate debugfs handlers vs. removal with lockdep
debugfs: fix automount d_fsdata usage
wifi: mac80211: handle 320 MHz in ieee80211_ht_cap_ie_to_sta_ht_cap
wifi: avoid offset calculation on NULL pointer
wifi: cfg80211: hold wiphy mutex for send_interface
wifi: cfg80211: lock wiphy mutex for rfkill poll
wifi: cfg80211: fix CQM for non-range use
wifi: mac80211: do not pass AP_VLAN vif pointer to drivers during flush
wifi: iwlwifi: mvm: fix an error code in iwl_mvm_mld_add_sta()
wifi: mt76: mt7925: fix typo in mt7925_init_he_caps
wifi: mt76: mt7921: fix 6GHz disabled by the missing default CLC config
====================
Link: https://lore.kernel.org/r/20231129150809.31083-3-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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