There aren't any actual callers of lock_page_async(), so remove it.
Convert filemap_update_page() to call __folio_lock_async().
__folio_lock_async() is 21 bytes smaller than __lock_page_async(),
but the real savings come from using a folio in filemap_update_page(),
shrinking it from 515 bytes to 404 bytes, saving 110 bytes. The text
shrinks by 132 bytes in total.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jeff Layton <jlayton@kernel.org>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: David Howells <dhowells@redhat.com>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
-----BEGIN PGP SIGNATURE-----
iQGzBAABCgAdFiEE6fsu8pdIjtWE/DpLiiy9cAdyT1EFAmFPfPIACgkQiiy9cAdy
T1FXSAv/Y/iJPj48F/rO2FX5aoUgK2All0dmQ2VOOJ96HuKOVH+9oTv60fbVoAjI
16zOXRhMGQHjLNHWuJp+n4OOM3pgOyg3MaLReIaIVnHe7z8G5WpmMID+QfIJhFWM
PfS+nr9S6sHwfspOIX4AwVzsYozj8vNWsUJKGLcG/d1u67ipemAOmiXMrD+4P+1Q
sO0v0rVcuOy3tYMXYpDhOQBWxK2R8DeWCs+NTradntnWWsfHUUfuhj7G66AphjDh
HzH9TuR+M5gOrLKpHDCWlE1u3MoTGURBXZC6xB4zHMZy+W5hM6PVNrO/89GdLD89
nXa1ZxvNSwrJsc6JArExwKcz+sKM172ui/BY5iR7YEuchVUd8u3L0yeThx/2H7Ri
9C/k9oNnql3hB8vX9yeqrt8Rr6G0IGJ/nlS+aBdbTKqB/t3cNGFImL3X0BeBsxjD
umkeY92wVP0ve7hLSOPSQnNoWo4p+eN215tRRSCu+1DjAqJA1HyD+PqibzeWTAdK
FT+CF/Ko
=wDpw
-----END PGP SIGNATURE-----
Merge tag '5.15-rc2-ksmbd-fixes' of git://git.samba.org/ksmbd
Pull ksmbd fixes from Steve French:
"Five fixes for the ksmbd kernel server, including three security
fixes:
- remove follow symlinks support
- use LOOKUP_BENEATH to prevent out of share access
- SMB3 compounding security fix
- fix for returning the default streams correctly, fixing a bug when
writing ppt or doc files from some clients
- logging more clearly that ksmbd is experimental (at module load
time)"
* tag '5.15-rc2-ksmbd-fixes' of git://git.samba.org/ksmbd:
ksmbd: use LOOKUP_BENEATH to prevent the out of share access
ksmbd: remove follow symlinks support
ksmbd: check protocol id in ksmbd_verify_smb_message()
ksmbd: add default data stream name in FILE_STREAM_INFORMATION
ksmbd: log that server is experimental at module load
Merge misc fixes from Andrew Morton:
"16 patches.
Subsystems affected by this patch series: xtensa, sh, ocfs2, scripts,
lib, and mm (memory-failure, kasan, damon, shmem, tools, pagecache,
debug, and pagemap)"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm: fix uninitialized use in overcommit_policy_handler
mm/memory_failure: fix the missing pte_unmap() call
kasan: always respect CONFIG_KASAN_STACK
sh: pgtable-3level: fix cast to pointer from integer of different size
mm/debug: sync up latest migrate_reason to migrate_reason_names
mm/debug: sync up MR_CONTIG_RANGE and MR_LONGTERM_PIN
mm: fs: invalidate bh_lrus for only cold path
lib/zlib_inflate/inffast: check config in C to avoid unused function warning
tools/vm/page-types: remove dependency on opt_file for idle page tracking
scripts/sorttable: riscv: fix undeclared identifier 'EM_RISCV' error
ocfs2: drop acl cache for directories too
mm/shmem.c: fix judgment error in shmem_is_huge()
xtensa: increase size of gcc stack frame check
mm/damon: don't use strnlen() with known-bogus source length
kasan: fix Kconfig check of CC_HAS_WORKING_NOSANITIZE_ADDRESS
mm, hwpoison: add is_free_buddy_page() in HWPoisonHandlable()
-----BEGIN PGP SIGNATURE-----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=jnhx
-----END PGP SIGNATURE-----
Merge tag 'io_uring-5.15-2021-09-25' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
"This one looks a bit bigger than it is, but that's mainly because 2/3
of it is enabling IORING_OP_CLOSE to close direct file descriptors.
We've had a few folks using them and finding it confusing that the way
to close them is through using -1 for file update, this just brings
API symmetry for direct descriptors. Hence I think we should just do
this now and have a better API for 5.15 release. There's some room for
de-duplicating the close code, but we're leaving that for the next
merge window.
Outside of that, just small fixes:
- Poll race fixes (Hao)
- io-wq core dump exit fix (me)
- Reschedule around potentially intensive tctx and buffer iterators
on teardown (me)
- Fix for always ending up punting files update to io-wq (me)
- Put the provided buffer meta data under memcg accounting (me)
- Tweak for io_write(), removing dead code that was added with the
iterator changes in this release (Pavel)"
* tag 'io_uring-5.15-2021-09-25' of git://git.kernel.dk/linux-block:
io_uring: make OP_CLOSE consistent with direct open
io_uring: kill extra checks in io_write()
io_uring: don't punt files update to io-wq unconditionally
io_uring: put provided buffer meta data under memcg accounting
io_uring: allow conditional reschedule for intensive iterators
io_uring: fix potential req refcount underflow
io_uring: fix missing set of EPOLLONESHOT for CQ ring overflow
io_uring: fix race between poll completion and cancel_hash insertion
io-wq: ensure we exit if thread group is exiting
- fix the dangling pointer use in erofs_lookup tracepoint;
- fix unsupported chunk format check;
- zero out compacted_2b if compacted_4b_initial > totalidx.
-----BEGIN PGP SIGNATURE-----
iIcEABYIAC8WIQThPAmQN9sSA0DVxtI5NzHcH7XmBAUCYU9CBxEceGlhbmdAa2Vy
bmVsLm9yZwAKCRA5NzHcH7XmBDgBAQDaj1NWjIleK4Q7hoerl++6MMhzEJrmpxSE
EENs9NPuiQEAp7dN0T05a2J+Szp5xJeLYg67LoYbAnDmbmzGH/jQQg0=
=6e/B
-----END PGP SIGNATURE-----
Merge tag 'erofs-for-5.15-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs fixes from Gao Xiang:
"Two bugfixes to fix the 4KiB blockmap chunk format availability and a
dangling pointer usage. There is also a trivial cleanup to clarify
compacted_2b if compacted_4b_initial > totalidx.
Summary:
- fix the dangling pointer use in erofs_lookup tracepoint
- fix unsupported chunk format check
- zero out compacted_2b if compacted_4b_initial > totalidx"
* tag 'erofs-for-5.15-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
erofs: clear compacted_2b if compacted_4b_initial > totalidx
erofs: fix misbehavior of unsupported chunk format check
erofs: fix up erofs_lookup tracepoint
-----BEGIN PGP SIGNATURE-----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=SK4S
-----END PGP SIGNATURE-----
Merge tag '5.15-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Six small cifs/smb3 fixes, two for stable:
- important fix for deferred close (found by a git functional test)
related to attribute caching on close.
- four (two cosmetic, two more serious) small fixes for problems
pointed out by smatch via Dan Carpenter
- fix for comment formatting problems pointed out by W=1"
* tag '5.15-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: fix incorrect check for null pointer in header_assemble
smb3: correct server pointer dereferencing check to be more consistent
smb3: correct smb3 ACL security descriptor
cifs: Clear modified attribute bit from inode flags
cifs: Deal with some warnings from W=1
cifs: fix a sign extension bug
instead of removing '..' in a given path, call
kern_path with LOOKUP_BENEATH flag to prevent
the out of share access.
ran various test on this:
smb2-cat-async smb://127.0.0.1/homes/../out_of_share
smb2-cat-async smb://127.0.0.1/homes/foo/../../out_of_share
smbclient //127.0.0.1/homes -c "mkdir ../foo2"
smbclient //127.0.0.1/homes -c "rename bar ../bar"
Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Cc: Ralph Boehme <slow@samba.org>
Tested-by: Steve French <smfrench@gmail.com>
Tested-by: Namjae Jeon <linkinjeon@kernel.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
The kernel test robot reported the regression of fio.write_iops[1] with
commit 8cc621d2f4 ("mm: fs: invalidate BH LRU during page migration").
Since lru_add_drain is called frequently, invalidate bh_lrus there could
increase bh_lrus cache miss ratio, which needs more IO in the end.
This patch moves the bh_lrus invalidation from the hot path( e.g.,
zap_page_range, pagevec_release) to cold path(i.e., lru_add_drain_all,
lru_cache_disable).
Zhengjun Xing confirmed
"I test the patch, the regression reduced to -2.9%"
[1] https://lore.kernel.org/lkml/20210520083144.GD14190@xsang-OptiPlex-9020/
[2] 8cc621d2f4, mm: fs: invalidate BH LRU during page migration
Link: https://lkml.kernel.org/r/20210907212347.1977686-1-minchan@kernel.org
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reported-by: kernel test robot <oliver.sang@intel.com>
Reviewed-by: Chris Goldsworthy <cgoldswo@codeaurora.org>
Tested-by: "Xing, Zhengjun" <zhengjun.xing@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
ocfs2_data_convert_worker() is currently dropping any cached acl info
for FILE before down-converting meta lock. It should also drop for
DIRECTORY. Otherwise the second acl lookup returns the cached one (from
VFS layer) which could be already stale.
The problem we are seeing is that the acl changes on one node doesn't
get refreshed on other nodes in the following case:
Node 1 Node 2
-------------- ----------------
getfacl dir1
getfacl dir1 <-- this is OK
setfacl -m u:user1:rwX dir1
getfacl dir1 <-- see the change for user1
getfacl dir1 <-- can't see change for user1
Link: https://lkml.kernel.org/r/20210903012631.6099-1-wen.gang.wang@oracle.com
Signed-off-by: Wengang Wang <wen.gang.wang@oracle.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>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
From recently open/accept are now able to manipulate fixed file table,
but it's inconsistent that close can't. Close the gap, keep API same as
with open/accept, i.e. via sqe->file_slot.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
-----BEGIN PGP SIGNATURE-----
iQFHBAABCAAxFiEEydHwtzie9C7TfviiSn/eOAIR84sFAmFNudoTHGlkcnlvbW92
QGdtYWlsLmNvbQAKCRBKf944AhHzi93DCACjNadeFDipw3oAkzdAo+wo0MSYgByU
4eu3XN77yTHphc+xoCU/9cCeSkthfNc2XZDktb22lbAX2QxCgvQsWFgck+i0d245
9uQ68IycrUza9PGjLL3okZiLGzqsk97ZDt7vqXT51zN6dgEATVJ5YaXIhVIwAIM0
F6VVcoHruoOPLhPXctQUZusWS+XPzPvU34n2sNodREv9mYeoFmaZJ15wB6UZn2Ps
qL6Usoq15EH5cbW60XbqVWFDAhWmCN/6HG3b6w3WtD+lVb2NWTFJOAZGxMVvNo46
1TacgQUVs7iIh+bol3modOT94yVZ4Cvrb0uUMY/oE4AgjVPGxSjHSeMB
=7D7F
-----END PGP SIGNATURE-----
Merge tag 'ceph-for-5.15-rc3' of git://github.com/ceph/ceph-client
Pull ceph fix from Ilya Dryomov:
"A fix for a potential array out of bounds access from Dan"
* tag 'ceph-for-5.15-rc3' of git://github.com/ceph/ceph-client:
ceph: fix off by one bugs in unsafe_request_wait()
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEq1nRK9aeMoq1VSgcnJ2qBz9kQNkFAmFNp2UACgkQnJ2qBz9k
QNlubwf/Zv5XJccDBGxn0pB7ew1fN4HowTbWdaS0ELDuLZ2KHhZgEbtUu0V2oZ7I
pkUMO97llPk0KHWWjcooIaBMGbBQ78Hqq3xFWWboxEu5hMhJyN1cR2uJlrELvxp1
HsKKaREaUl8jHNQyIuREl/SqLaHmW4LWgrVCZKUTBEc4BeRz2E0C4LTymAZEpTXt
UCRwAU8itK8Z9/Da1xJ6b04/ZMamgoc0a8Rzq3YwCIcUyFLJATB1/XHR6j0c6B6x
gH/y7m/y1m3BFsMbMwGNMwiyJWcBXy2RB4I3B4HB3U6ifBL3ebFQlPQIu5PzRbiG
bGaWRx5o8c5mY/eHpFV4kZS30HM25A==
=Wep3
-----END PGP SIGNATURE-----
Merge tag 'fixes_for_v5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull misc filesystem fixes from Jan Kara:
"A for ext2 sleep in atomic context in case of some fs problems and a
cleanup of an invalidate_lock initialization"
* tag 'fixes_for_v5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
ext2: fix sleeping in atomic bugs on error
mm: Fully initialize invalidate_lock, amend lock class later
We don't retry short writes and so we would never get to async setup in
io_write() in that case. Thus ret2 > 0 is always false and
iov_iter_advance() is never used. Apparently, the same is found by
Coverity, which complains on the code.
Fixes: cd65869512 ("io_uring: use iov_iter state save/restore helpers")
Reported-by: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/5b33e61034748ef1022766efc0fb8854cfcf749c.1632500058.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
There's no reason to punt it unconditionally, we just need to ensure that
the submit lock grabbing is conditional.
Fixes: 05f3fb3c53 ("io_uring: avoid ring quiesce for fixed file set unregister and update")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
For each provided buffer, we allocate a struct io_buffer to hold the
data associated with it. As a large number of buffers can be provided,
account that data with memcg.
Fixes: ddf0322db7 ("io_uring: add IORING_OP_PROVIDE_BUFFERS")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
For multishot mode, there may be cases like:
iowq original context
io_poll_add
_arm_poll()
mask = vfs_poll() is not 0
if mask
(2) io_poll_complete()
compl_unlock
(interruption happens
tw queued to original
context)
io_poll_task_func()
compl_lock
(3) done = io_poll_complete() is true
compl_unlock
put req ref
(1) if (poll->flags & EPOLLONESHOT)
put req ref
EPOLLONESHOT flag in (1) may be from (2) or (3), so there are multiple
combinations that can cause ref underfow.
Let's address it by:
- check the return value in (2) as done
- change (1) to if (done)
in this way, we only do ref put in (1) if 'oneshot flag' is from
(2)
- do poll.done check in io_poll_task_func(), so that we won't put ref
for the second time.
Signed-off-by: Hao Xu <haoxu@linux.alibaba.com>
Link: https://lore.kernel.org/r/20210922101238.7177-4-haoxu@linux.alibaba.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
We should set EPOLLONESHOT if cqring_fill_event() returns false since
io_poll_add() decides to put req or not by it.
Fixes: 5082620fb2 ("io_uring: terminate multishot poll for CQ ring overflow")
Signed-off-by: Hao Xu <haoxu@linux.alibaba.com>
Link: https://lore.kernel.org/r/20210922101238.7177-3-haoxu@linux.alibaba.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
If poll arming and poll completion runs in parallel, there maybe races.
For instance, run io_poll_add in iowq and io_poll_task_func in original
context, then:
iowq original context
io_poll_add
vfs_poll
(interruption happens
tw queued to original
context) io_poll_task_func
generate cqe
del from cancel_hash[]
if !poll.done
insert to cancel_hash[]
The entry left in cancel_hash[], similar case for fast poll.
Fix it by set poll.done = true when del from cancel_hash[].
Fixes: 5082620fb2 ("io_uring: terminate multishot poll for CQ ring overflow")
Signed-off-by: Hao Xu <haoxu@linux.alibaba.com>
Link: https://lore.kernel.org/r/20210922101238.7177-2-haoxu@linux.alibaba.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Dave reports that a coredumping workload gets stuck in 5.15-rc2, and
identified the culprit in the Fixes line below. The problem is that
relying solely on fatal_signal_pending() to gate whether to exit or not
fails miserably if a process gets eg SIGILL sent. Don't exclusively
rely on fatal signals, also check if the thread group is exiting.
Fixes: 15e20db2e0 ("io-wq: only exit on fatal signals")
Reported-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Although very unlikely that the tlink pointer would be null in this case,
get_next_mid function can in theory return null (but not an error)
so need to check for null (not for IS_ERR, which can not be returned
here).
Address warning:
fs/smbfs_client/connect.c:2392 cifs_match_super()
warn: 'tlink' isn't an ERR_PTR
Pointed out by Dan Carpenter via smatch code analysis tool
CC: stable@vger.kernel.org
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Address warning:
fs/smbfs_client/misc.c:273 header_assemble()
warn: variable dereferenced before check 'treeCon->ses->server'
Pointed out by Dan Carpenter via smatch code analysis tool
Although the check is likely unneeded, adding it makes the code
more consistent and easier to read, as the same check is
done elsewhere in the function.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
-----BEGIN PGP SIGNATURE-----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=VJFC
-----END PGP SIGNATURE-----
Merge tag 'for-5.15-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- regression fix for leak of transaction handle after verity rollback
failure
- properly reset device last error between mounts
- improve one error handling case when checksumming bios
- fixup confusing displayed size of space info free space
* tag 'for-5.15-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: prevent __btrfs_dump_space_info() to underflow its free space
btrfs: fix mount failure due to past and transient device flush error
btrfs: fix transaction handle leak after verity rollback failure
btrfs: replace BUG_ON() in btrfs_csum_one_bio() with proper error handling
Address warning:
fs/smbfs_client/smb2pdu.c:2425 create_sd_buf()
warn: struct type mismatch 'smb3_acl vs cifs_acl'
Pointed out by Dan Carpenter via smatch code analysis tool
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Clear CIFS_INO_MODIFIED_ATTR bit from inode flags after
updating mtime and ctime
Signed-off-by: Rohith Surabattula <rohiths@microsoft.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
Cc: stable@vger.kernel.org # 5.13+
Signed-off-by: Steve French <stfrench@microsoft.com>
Deal with some warnings generated from make W=1:
(1) Add/remove/fix kerneldoc parameters descriptions.
(2) Turn cifs' rqst_page_get_length()'s banner comment into a kerneldoc
comment. It should probably be prefixed with "cifs_" though.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Currently, the whole indexes will only be compacted 4B if
compacted_4b_initial > totalidx. So, the calculated compacted_2b
is worthless for that case. It may waste CPU resources.
No need to update compacted_4b_initial as mkfs since it's used to
fulfill the alignment of the 1st compacted_2b pack and would handle
the case above.
We also need to clarify compacted_4b_end here. It's used for the
last lclusters which aren't fitted in the previous compacted_2b
packs.
Some messages are from Xiang.
Link: https://lore.kernel.org/r/20210914035915.1190-1-zbestahu@gmail.com
Signed-off-by: Yue Hu <huyue2@yulong.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Reviewed-by: Chao Yu <chao@kernel.org>
[ Gao Xiang: it's enough to use "compacted_4b_initial < totalidx". ]
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Unsupported chunk format should be checked with
"if (vi->chunkformat & ~EROFS_CHUNK_FORMAT_ALL)"
Found when checking with 4k-byte blockmap (although currently mkfs
uses inode chunk indexes format by default.)
Link: https://lore.kernel.org/r/20210922095141.233938-1-hsiangkao@linux.alibaba.com
Fixes: c5aa903a59 ("erofs: support reading chunk-based uncompressed files")
Reviewed-by: Liu Bo <bo.liu@linux.alibaba.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Use LOOKUP_NO_SYMLINKS flags for default lookup to prohibit the middle of
symlink component lookup and remove follow symlinks parameter support.
We re-implement it as reparse point later.
Test result:
smbclient -Ulinkinjeon%1234 //172.30.1.42/share -c
"get hacked/passwd passwd"
NT_STATUS_OBJECT_NAME_NOT_FOUND opening remote file \hacked\passwd
Cc: Ralph Böhme <slow@samba.org>
Cc: Steve French <smfrench@gmail.com>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
When second smb2 pdu has invalid protocol id, ksmbd doesn't detect it
and allow to process smb2 request. This patch add the check it in
ksmbd_verify_smb_message() and don't use protocol id of smb2 request as
protocol id of response.
Reviewed-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Reviewed-by: Ralph Böhme <slow@samba.org>
Reported-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
- Fix crash in NLM TEST procedure
- NFSv4.1+ backchannel not restored after PATH_DOWN
-----BEGIN PGP SIGNATURE-----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=L0c1
-----END PGP SIGNATURE-----
Merge tag 'nfsd-5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux
Pull nfsd fixes from Chuck Lever:
"Critical bug fixes:
- Fix crash in NLM TEST procedure
- NFSv4.1+ backchannel not restored after PATH_DOWN"
* tag 'nfsd-5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
nfsd: back channel stuck in SEQ4_STATUS_CB_PATH_DOWN
NLM: Fix svcxdr_encode_owner()
The ext2_error() function syncs the filesystem so it sleeps. The caller
is holding a spinlock so it's not allowed to sleep.
ext2_statfs() <- disables preempt
-> ext2_count_free_blocks()
-> ext2_get_group_desc()
Fix this by using WARN() to print an error message and a stack trace
instead of using ext2_error().
Link: https://lore.kernel.org/r/20210921203233.GA16529@kili
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
The problem is the mismatched types between "ctx->total_len" which is
an unsigned int, "rc" which is an int, and "ctx->rc" which is a
ssize_t. The code does:
ctx->rc = (rc == 0) ? ctx->total_len : rc;
We want "ctx->rc" to store the negative "rc" error code. But what
happens is that "rc" is type promoted to a high unsigned int and
'ctx->rc" will store the high positive value instead of a negative
value.
The fix is to change "rc" from an int to a ssize_t.
Fixes: c610c4b619 ("CIFS: Add asynchronous write support through kernel AIO")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Windows client expect to get default stream name(::DATA) in
FILE_STREAM_INFORMATION response even if there is no stream data in file.
This patch fix update failure when writing ppt or doc files.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Reviewed-By: Tom Talpey <tom@talpey.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
While we are working through detailed security reviews
of ksmbd server code we should remind users that it is an
experimental module by adding a warning when the module
loads. Currently the module shows as experimental
in Kconfig and is disabled by default, but we don't want
to confuse users.
Although ksmbd passes a wide variety of the
important functional tests (since initial focus had
been largely on functional testing such as smbtorture,
xfstests etc.), and ksmbd has added key security
features (e.g. GCM256 encryption, Kerberos support),
there are ongoing detailed reviews of the code base
for path processing and network buffer decoding, and
this patch reminds users that the module should be
considered "experimental."
Reviewed-by: Namjae Jeon <linkinjeon@kernel.org>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
The "> max" tests should be ">= max" to prevent an out of bounds access
on the next lines.
Fixes: e1a4541ec0 ("ceph: flush the mdlog before waiting on unsafe reqs")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
In commit b7213ffa0e ("qnx4: avoid stringop-overread errors") I tried
to teach gcc about how the directory entry structure can be two
different things depending on a status flag. It made the code clearer,
and it seemed to make gcc happy.
However, Arnd points to a gcc bug, where despite using two different
members of a union, gcc then gets confused, and uses the size of one of
the members to decide if a string overrun happens. And not necessarily
the rigth one.
End result: with some configurations, gcc-11 will still complain about
the source buffer size being overread:
fs/qnx4/dir.c: In function 'qnx4_readdir':
fs/qnx4/dir.c:76:32: error: 'strnlen' specified bound [16, 48] exceeds source size 1 [-Werror=stringop-overread]
76 | size = strnlen(name, size);
| ^~~~~~~~~~~~~~~~~~~
fs/qnx4/dir.c:26:22: note: source object declared here
26 | char de_name;
| ^~~~~~~
because gcc will get confused about which union member entry is actually
getting accessed, even when the source code is very clear about it. Gcc
internally will have combined two "redundant" pointers (pointing to
different union elements that are at the same offset), and takes the
size checking from one or the other - not necessarily the right one.
This is clearly a gcc bug, but we can work around it fairly easily. The
biggest thing here is the big honking comment about why we do what we
do.
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99578#c6
Reported-and-tested-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-----BEGIN PGP SIGNATURE-----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=BLd7
-----END PGP SIGNATURE-----
Merge tag 'afs-fixes-20210913' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull AFS fixes from David Howells:
"Fixes for AFS problems that can cause data corruption due to
interaction with another client modifying data cached locally:
- When d_revalidating a dentry, don't look at the inode to which it
points. Only check the directory to which the dentry belongs. This
was confusing things and causing the silly-rename cleanup code to
remove the file now at the dentry of a file that got deleted.
- Fix mmap data coherency. When a callback break is received that
relates to a file that we have cached, the data content may have
been changed (there are other reasons, such as the user's rights
having been changed). However, we're checking it lazily, only on
entry to the kernel, which doesn't happen if we have a writeable
shared mapped page on that file.
We make the kernel keep track of mmapped files and clear all PTEs
mapping to that file as soon as the callback comes in by calling
unmap_mapping_pages() (we don't necessarily want to zap the
pagecache). This causes the kernel to be reentered when userspace
tries to access the mmapped address range again - and at that point
we can query the server and, if we need to, zap the page cache.
Ideally, I would check each file at the point of notification, but
that involves poking the server[*] - which is holding an exclusive
lock on the vnode it is changing, waiting for all the clients it
notified to reply. This could then deadlock against the server.
Further, invalidating the pagecache might call ->launder_page(),
which would try to write to the file, which would definitely
deadlock. (AFS doesn't lease file access).
[*] Checking to see if the file content has changed is a matter of
comparing the current data version number, but we have to ask
the server for that. We also need to get a new callback promise
and we need to poke the server for that too.
- Add some more points at which the inode is validated, since we're
doing it lazily, notably in ->read_iter() and ->page_mkwrite(), but
also when performing some directory operations.
Ideally, checking in ->read_iter() would be done in some derivation
of filemap_read(). If we're going to call the server to read the
file, then we get the file status fetch as part of that.
- The above is now causing us to make a lot more calls to
afs_validate() to check the inode - and afs_validate() takes the
RCU read lock each time to make a quick check (ie.
afs_check_validity()). This is entirely for the purpose of checking
cb_s_break to see if the server we're using reinitialised its list
of callbacks - however this isn't a very common event, so most of
the time we're taking this needlessly.
Add a new cell-wide counter to count the number of
reinitialisations done by any server and check that - and only if
that changes, take the RCU read lock and check the server list (the
server list may change, but the cell a file is part of won't).
- Don't update vnode->cb_s_break and ->cb_v_break inside the validity
checking loop. The cb_lock is done with read_seqretry, so we might
go round the loop a second time after resetting those values - and
that could cause someone else checking validity to miss something
(I think).
Also included are patches for fixes for some bugs encountered whilst
debugging this:
- Fix a leak of afs_read objects and fix a leak of keys hidden by
that.
- Fix a leak of pages that couldn't be added to extend a writeback.
- Fix the maintenance of i_blocks when i_size is changed by a local
write or a local dir edit"
Link: https://bugzilla.kernel.org/show_bug.cgi?id=214217 [1]
Link: https://lore.kernel.org/r/163111665183.283156.17200205573146438918.stgit@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/163113612442.352844.11162345591911691150.stgit@warthog.procyon.org.uk/ # i_blocks patch
* tag 'afs-fixes-20210913' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Fix updating of i_blocks on file/dir extension
afs: Fix corruption in reads at fpos 2G-4G from an OpenAFS server
afs: Try to avoid taking RCU read lock when checking vnode validity
afs: Fix mmap coherency vs 3rd-party changes
afs: Fix incorrect triggering of sillyrename on 3rd-party invalidation
afs: Add missing vnode validation checks
afs: Fix page leak
afs: Fix missing put on afs_read objects and missing get on the key therein
-----BEGIN PGP SIGNATURE-----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=vPyV
-----END PGP SIGNATURE-----
Merge tag '5.15-rc1-ksmbd' of git://git.samba.org/ksmbd
Pull ksmbd server fixes from Steve French:
"Three ksmbd fixes, including an important security fix for path
processing, and a buffer overflow check, and a trivial fix for
incorrect header inclusion"
* tag '5.15-rc1-ksmbd' of git://git.samba.org/ksmbd:
ksmbd: add validation for FILE_FULL_EA_INFORMATION of smb2_get_info
ksmbd: prevent out of share access
ksmbd: transport_rdma: Don't include rwlock.h directly
-----BEGIN PGP SIGNATURE-----
iQGzBAABCgAdFiEE6fsu8pdIjtWE/DpLiiy9cAdyT1EFAmFGPJwACgkQiiy9cAdy
T1H1Fgv+NjYfcS9C4UynXT9b0cm9Nv3t+1IVepS3WWH/V9EGWjR8aVY3HgFgzx7m
MqJRs1ytAB58fsDzu0RH9409QyyAcPiHk88Fw85yB1hMSEHABVfq37iXiPOWAPA0
pYKjm5pbbGzeTBnCBFaqgkJ/AeiZQ7vbtAYQ4AdCW5hi1fwSrJHPj+qA7NefgbnB
S9p4cQKMYFwzHP2+oUJBemktl512HaTEg8a+nqbGWd3QR7zcNSi3k5M+sHIP0DzZ
zqDgvgmgOecIqj9w/G9rTToPhKO9fFnoDxkpm/4JLxj2Zul+QZ6Lsfrm7BTOA8V8
bNQrlgBioOdLo3WpVYIyTPvywxD4zbLlwfk/spFDnuRvyyKDjR64iYfArCKSm9G9
c0wlNW7uFiAB66NNzTISSjA31lrwwvq8Q6bmOyNRC/n/LwsbE+EQCf2P4Ajn0m7l
Gb8441sbs8yjEs+E/FJF4f9xiVaCKQe6nBsGpxHKslD+J1W5f6hBco3Zswix13m+
0ObM5i+5
=d5GP
-----END PGP SIGNATURE-----
Merge tag '5.15-rc1-smb3' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs client fixes from Steve French:
- two deferred close fixes (for bugs found with xfstests 478 and 461)
- a deferred close improvement in rename
- two trivial fixes for incorrect Linux comment formatting of multiple
cifs files (pointed out by automated kernel test robot and
checkpatch)
* tag '5.15-rc1-smb3' of git://git.samba.org/sfrench/cifs-2.6:
cifs: Not to defer close on file when lock is set
cifs: Fix soft lockup during fsstress
cifs: Deferred close performance improvements
cifs: fix incorrect kernel doc comments
cifs: remove pathname for file from SPDX header
Add validation to check whether req->InputBufferLength is smaller than
smb2_ea_info_req structure size.
Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Cc: Ralph Böhme <slow@samba.org>
Cc: Steve French <smfrench@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Because of .., files outside the share directory
could be accessed. To prevent this, normalize
the given path and remove all . and ..
components.
In addition to the usual large set of regression tests (smbtorture
and xfstests), ran various tests on this to specifically check
path name validation including libsmb2 tests to verify path
normalization:
./examples/smb2-ls-async smb://172.30.1.15/homes2/../
./examples/smb2-ls-async smb://172.30.1.15/homes2/foo/../
./examples/smb2-ls-async smb://172.30.1.15/homes2/foo/../../
./examples/smb2-ls-async smb://172.30.1.15/homes2/foo/../
./examples/smb2-ls-async smb://172.30.1.15/homes2/foo/..bar/
./examples/smb2-ls-async smb://172.30.1.15/homes2/foo/bar../
./examples/smb2-ls-async smb://172.30.1.15/homes2/foo/bar..
./examples/smb2-ls-async smb://172.30.1.15/homes2/foo/bar../../../../
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Close file immediately when lock is set.
Cc: stable@vger.kernel.org # 5.13+
Signed-off-by: Rohith Surabattula <rohiths@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Below traces are observed during fsstress and system got hung.
[ 130.698396] watchdog: BUG: soft lockup - CPU#6 stuck for 26s!
Cc: stable@vger.kernel.org # 5.13+
Signed-off-by: Rohith Surabattula <rohiths@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
During unlink/rename instead of closing all the deferred handles
under tcon, close only handles under the requested dentry.
Signed-off-by: Rohith Surabattula <rohiths@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
It's not uncommon where __btrfs_dump_space_info() gets called
under over-commit situations.
In that case free space would underflow as total allocated space is not
enough to handle all the over-committed space.
Such underflow values can sometimes cause confusion for users enabled
enospc_debug mount option, and takes some seconds for developers to
convert the underflow value to signed result.
Just output the free space as s64 to avoid such problem.
Reported-by: Eli V <eliventer@gmail.com>
Link: https://lore.kernel.org/linux-btrfs/CAJtFHUSy4zgyhf-4d9T+KdJp9w=UgzC2A0V=VtmaeEpcGgm1-Q@mail.gmail.com/
CC: stable@vger.kernel.org # 5.4+
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
When we get an error flushing one device, during a super block commit, we
record the error in the device structure, in the field 'last_flush_error'.
This is used to later check if we should error out the super block commit,
depending on whether the number of flush errors is greater than or equals
to the maximum tolerated device failures for a raid profile.
However if we get a transient device flush error, unmount the filesystem
and later try to mount it, we can fail the mount because we treat that
past error as critical and consider the device is missing. Even if it's
very likely that the error will happen again, as it's probably due to a
hardware related problem, there may be cases where the error might not
happen again. One example is during testing, and a test case like the
new generic/648 from fstests always triggers this. The test cases
generic/019 and generic/475 also trigger this scenario, but very
sporadically.
When this happens we get an error like this:
$ mount /dev/sdc /mnt
mount: /mnt wrong fs type, bad option, bad superblock on /dev/sdc, missing codepage or helper program, or other error.
$ dmesg
(...)
[12918.886926] BTRFS warning (device sdc): chunk 13631488 missing 1 devices, max tolerance is 0 for writable mount
[12918.888293] BTRFS warning (device sdc): writable mount is not allowed due to too many missing devices
[12918.890853] BTRFS error (device sdc): open_ctree failed
The failure happens because when btrfs_check_rw_degradable() is called at
mount time, or at remount from RO to RW time, is sees a non zero value in
a device's ->last_flush_error attribute, and therefore considers that the
device is 'missing'.
Fix this by setting a device's ->last_flush_error to zero when we close a
device, making sure the error is not seen on the next mount attempt. We
only need to track flush errors during the current mount, so that we never
commit a super block if such errors happened.
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
During a verity rollback, if we fail to update the inode or delete the
orphan, we abort the transaction and return without releasing our
transaction handle. Fix that by releasing the handle.
Fixes: 146054090b ("btrfs: initial fsverity support")
Fixes: 705242538f ("btrfs: verity metadata orphan items")
Reviewed-by: Boris Burkov <boris@bur.io>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
There is a BUG_ON() in btrfs_csum_one_bio() to catch code logic error.
It has indeed caught several bugs during subpage development.
But the BUG_ON() itself will bring down the whole system which is
an overkill.
Replace it with a WARN() and exit gracefully, so that it won't crash the
whole system while we can still catch the code logic error.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
-----BEGIN PGP SIGNATURE-----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=TnwU
-----END PGP SIGNATURE-----
Merge tag 'iov_iter.3-5.15-2021-09-17' of git://git.kernel.dk/linux-block
Pull io_uring iov_iter retry fixes from Jens Axboe:
"This adds a helper to save/restore iov_iter state, and modifies
io_uring to use it.
After that is done, we can now kill the iter->truncated addition that
we added for this release. The io_uring change is being overly
cautious with the save/restore/advance, but better safe than sorry and
we can always improve that and reduce the overhead if it proves to be
of concern. The only case to be worried about in this regard is huge
IO, where iteration can take a while to iterate segments.
I spent some time writing test cases, and expanded the coverage quite
a bit from the last posting of this. liburing carries this regression
test case now:
https://git.kernel.dk/cgit/liburing/tree/test/file-verify.c
which exercises all of this. It now also supports provided buffers,
and explicitly tests for end-of-file/device truncation as well.
On top of that, Pavel sanitized the IOPOLL retry path to follow the
exact same pattern as normal IO"
* tag 'iov_iter.3-5.15-2021-09-17' of git://git.kernel.dk/linux-block:
io_uring: move iopoll reissue into regular IO path
Revert "iov_iter: track truncated size"
io_uring: use iov_iter state save/restore helpers
iov_iter: add helper to save iov_iter state
