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linux/fs
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Ahmed Ehab 39c3aad43f bcachefs: Hold read lock in bch2_snapshot_tree_oldest_subvol() 
Syzbot reports a problem that a warning is triggered due to suspicious
use of rcu_dereference_check(). That is triggered by a call of
bch2_snapshot_tree_oldest_subvol().

The cause of the warning is that inside
bch2_snapshot_tree_oldest_subvol(), snapshot_t() is called which calls
rcu_dereference() that requires a read lock to be held. Also, the call
of bch2_snapshot_tree_next() eventually calls snapshot_t().

To fix this, call rcu_read_lock() before calling snapshot_t(). Then,
release the lock after the termination of the while loop.

Reported-by: <syzbot+f7c41a878676b72c16a6@syzkaller.appspotmail.com>
Signed-off-by: Ahmed Ehab <bottaawesome633@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-09-21 14:54:18 -04:00
..
9p
Two fixes headed to stable trees:
2024-05-29 09:25:15 -07:00
adfs
fs/adfs: add MODULE_DESCRIPTION
2024-07-18 09:50:08 +02:00
affs
affs: struct slink_front: Replace 1-element array with flexible array
2024-07-11 16:14:26 +02:00
afs
- 875fa64577da ("mm/hugetlb_vmemmap: fix race with speculative PFN
2024-07-21 17:15:46 -07:00
autofs
vfs-6.11.mount.api
2024-07-15 11:31:32 -07:00
bcachefs
bcachefs: Hold read lock in bch2_snapshot_tree_oldest_subvol()
2024-09-21 14:54:18 -04:00
befs
befs: Convert befs_symlink_read_folio() to use folio_end_read()
2024-05-31 12:31:39 +02:00
bfs
mm, slab: remove last vestiges of SLAB_MEM_SPREAD
2024-03-12 20:32:19 -07:00
btrfs
- 875fa64577da ("mm/hugetlb_vmemmap: fix race with speculative PFN
2024-07-21 17:15:46 -07:00
cachefiles
cachefiles: Set the max subreq size for cache writes to MAX_RW_COUNT
2024-07-24 10:53:13 +02:00
ceph
A small patchset to address bogus I/O errors and ultimately an
2024-07-26 10:34:42 -07:00
coda
coda: Convert coda_symlink_filler() to use folio_end_read()
2024-05-31 12:31:39 +02:00
configfs
fs/configfs: Add a callback to determine attribute visibility
2024-06-17 20:42:57 +02:00
cramfs
vfs-6.11.module.description
2024-07-15 11:14:59 -07:00
crypto
The usual shower of singleton fixes and minor series all over MM,
2024-05-19 09:21:03 -07:00
debugfs
vfs-6.11.mount.api
2024-07-15 11:31:32 -07:00
devpts
…
dlm
dlm: add rcu_barrier before destroy kmem cache
2024-06-13 12:48:46 -05:00
ecryptfs
hardening updates for 6.10-rc1
2024-05-13 14:14:05 -07:00
efivarfs
efivarfs: Convert to new uid/gid option parsing helpers
2024-07-02 06:21:18 +02:00
efs
vfs-6.11.module.description
2024-07-15 11:14:59 -07:00
erofs
erofs: convert comma to semicolon
2024-07-26 18:48:12 +08:00
exfat
Description for this pull request:
2024-07-17 12:53:47 -07:00
exportfs
fhandle: relax open_by_handle_at() permission checks
2024-05-28 15:57:23 +02:00
ext2
ext2: Verify bitmap and itable block numbers before using them
2024-06-26 12:54:11 +02:00
ext4
Many cleanups and bug fixes in ext4, especially for the fast commit
2024-07-18 17:03:42 -07:00
f2fs
f2fs update for 6.11-rc1
2024-07-23 15:21:19 -07:00
fat
vfs-6.11.mount.api
2024-07-15 11:31:32 -07:00
freevxfs
freevxfs: Convert freevxfs to the new mount API.
2024-03-26 09:04:53 +01:00
fuse
virtio: features, fixes, cleanups
2024-07-19 11:57:55 -07:00
gfs2
gfs2: Clean up glock demote logic
2024-07-09 10:40:03 +02:00
hfs
vfs-6.11.module.description
2024-07-15 11:14:59 -07:00
hfsplus
vfs-6.11.misc
2024-07-15 10:52:51 -07:00
hostfs
vfs-6.11-rc1.fixes.3
2024-07-27 15:11:59 -07:00
hpfs
vfs-6.11.module.description
2024-07-15 11:14:59 -07:00
hugetlbfs
- 875fa64577da ("mm/hugetlb_vmemmap: fix race with speculative PFN
2024-07-21 17:15:46 -07:00
iomap
vfs-6.11.iomap
2024-07-15 13:28:14 -07:00
isofs
\n
2024-07-17 13:11:42 -07:00
jbd2
jbd2: increase maximum transaction size
2024-07-08 23:59:37 -04:00
jffs2
Kbuild updates for v6.11
2024-07-23 14:32:21 -07:00
jfs
Folio conversion from Matthew Wilcox and a few various fixes
2024-07-23 15:15:16 -07:00
kernfs
kernfs: mount: Remove unnecessary ‘NULL’ values from knparent
2024-05-04 19:02:39 +02:00
lockd
lockd: Use *-y instead of *-objs in Makefile
2024-07-08 14:10:03 -04:00
minix
vfs-6.11.module.description
2024-07-15 11:14:59 -07:00
netfs
netfs: Fix writeback that needs to go to both server and cache
2024-07-24 10:53:13 +02:00
nfs
- 875fa64577da ("mm/hugetlb_vmemmap: fix race with speculative PFN
2024-07-21 17:15:46 -07:00
nfs_common
fs: nfs: add missing MODULE_DESCRIPTION() macros
2024-07-08 13:47:24 -04:00
nfsd
NFSD 6.11 Release Notes
2024-07-17 12:00:49 -07:00
nilfs2
nilfs2: handle inconsistent state in nilfs_btnode_create_block()
2024-07-26 14:33:10 -07:00
nls
fs: nls: add missing MODULE_DESCRIPTION() macros
2024-06-03 16:37:07 +02:00
notify
fsnotify: clear PARENT_WATCHED flags lazily
2024-06-05 09:52:38 +02:00
ntfs3
ntfs3 changes for 6.11-rc1
2024-07-22 10:50:18 -07:00
ocfs2
- In the series "treewide: Refactor heap related implementation",
2024-07-21 17:56:22 -07:00
omfs
…
openpromfs
openpromfs: add missing MODULE_DESCRIPTION() macro
2024-06-20 09:46:01 +02:00
orangefs
orangefs: Remove calls to set/clear the error flag
2024-05-31 12:31:41 +02:00
overlayfs
ovl: fix encoding fid for lower only root
2024-06-14 10:30:40 +02:00
proc
Random number generator updates for Linux 6.11-rc1.
2024-07-24 10:29:50 -07:00
pstore
memblock: updates for 6.11-rc1
2024-07-18 14:48:11 -07:00
qnx4
qnx4: add MODULE_DESCRIPTION()
2024-05-28 11:52:53 +02:00
qnx6
qnx6: add MODULE_DESCRIPTION()
2024-05-28 11:52:49 +02:00
quota
sysctl: treewide: constify the ctl_table argument of proc_handlers
2024-07-24 20:59:29 +02:00
ramfs
mm: switch mm->get_unmapped_area() to a flag
2024-04-25 20:56:25 -07:00
reiserfs
reiserfs: Remove call to folio_set_error()
2024-05-31 12:31:41 +02:00
romfs
romfs: Convert romfs_read_folio() to use a folio
2024-05-31 12:31:42 +02:00
smb
six smb3 client fixes
2024-07-27 20:08:07 -07:00
squashfs
Mainly singleton patches, documented in their respective changelogs.
2024-05-19 14:02:03 -07:00
sysfs
Merge 6.9-rc5 into driver-core-next
2024-04-23 13:27:43 +02:00
sysv
fs: sysv: add MODULE_DESCRIPTION()
2024-05-28 11:52:45 +02:00
tests
execve: Move KUnit tests to tests/ subdirectory
2024-07-22 18:25:47 -07:00
tracefs
tracefs: Convert to new uid/gid option parsing helpers
2024-07-02 06:21:20 +02:00
ubifs
ubifs: add check for crypto_shash_tfm_digest
2024-07-12 22:01:09 +02:00
udf
udf: prevent integer overflow in udf_bitmap_free_blocks()
2024-06-26 12:54:11 +02:00
ufs
- In the series "treewide: Refactor heap related implementation",
2024-07-21 17:56:22 -07:00
unicode
unicode: add MODULE_DESCRIPTION() macros
2024-06-20 19:30:02 -04:00
vboxsf
vfs-6.11.mount.api
2024-07-15 11:31:32 -07:00
verity
bpf: treewide: Align kfunc signatures to prog point-of-view
2024-06-12 11:01:31 -07:00
xfs
sysctl: treewide: constify the ctl_table argument of proc_handlers
2024-07-24 20:59:29 +02:00
zonefs
zonefs: enable support for large folios
2024-06-11 11:22:57 +09:00
aio.c
- 875fa64577da ("mm/hugetlb_vmemmap: fix race with speculative PFN
2024-07-21 17:15:46 -07:00
anon_inodes.c
fs: Create anon_inode_getfile_fmode()
2024-04-26 10:33:05 +02:00
attr.c
fs: Export in_group_or_capable()
2024-06-25 11:15:48 +02:00
backing-file.c
ovl: implement tmpfile
2024-05-02 20:35:57 +02:00
bad_inode.c
…
binfmt_elf_fdpic.c
fs: don't block i_writecount during exec
2024-06-03 15:52:10 +02:00
binfmt_elf.c
execve fix for v6.11-rc1
2024-07-23 17:30:42 -07:00
binfmt_flat.c
…
binfmt_misc.c
vfs-6.11.module.description
2024-07-15 11:14:59 -07:00
binfmt_script.c
fs: binfmt: add missing MODULE_DESCRIPTION() macros
2024-05-28 12:06:51 +02:00
buffer.c
Many cleanups and bug fixes in ext4, especially for the fast commit
2024-07-18 17:03:42 -07:00
char_dev.c
…
compat_binfmt_elf.c
…
coredump.c
sysctl: treewide: constify the ctl_table argument of proc_handlers
2024-07-24 20:59:29 +02:00
d_path.c
…
dax.c
dax: use huge_zero_folio
2024-04-25 20:56:20 -07:00
dcache.c
sysctl: treewide: constify the ctl_table argument of proc_handlers
2024-07-24 20:59:29 +02:00
direct-io.c
fs/direct-io: remove redundant assignment to variable retval
2024-04-11 10:21:24 +02:00
drop_caches.c
sysctl: treewide: constify the ctl_table argument of proc_handlers
2024-07-24 20:59:29 +02:00
eventfd.c
eventfd: strictly check the count parameter of eventfd_write to avoid inputting illegal strings
2024-02-08 10:12:26 +01:00
eventpoll.c
epoll: be better about file lifetimes
2024-05-05 14:00:48 -07:00
exec.c
sysctl: treewide: constify the ctl_table argument of proc_handlers
2024-07-24 20:59:29 +02:00
fcntl.c
fcntl: add F_DUPFD_QUERY fcntl()
2024-05-10 08:26:31 +02:00
fhandle.c
fhandle: relax open_by_handle_at() permission checks
2024-05-28 15:57:23 +02:00
file_table.c
sysctl: treewide: constify the ctl_table argument of proc_handlers
2024-07-24 20:59:29 +02:00
file.c
fs/file: fix the check in find_next_fd()
2024-05-30 09:11:47 +02:00
filesystems.c
…
fs_context.c
…
fs_parser.c
fs_parse: add uid & gid option option parsing helpers
2024-07-02 06:20:49 +02:00
fs_pin.c
…
fs_struct.c
…
fs_types.c
…
fs-writeback.c
sysctl: treewide: constify the ctl_table argument of proc_handlers
2024-07-24 20:59:29 +02:00
fsopen.c
vfs: retire user_path_at_empty and drop empty arg from getname_flags
2024-06-05 17:03:57 +02:00
init.c
…
inode.c
inode: make __iget() a static inline
2024-09-09 09:41:47 -04:00
internal.h
vfs-6.11.pidfs
2024-07-15 12:34:01 -07:00
ioctl.c
fs/ioctl: Add a comment to keep the logic in sync with LSM policies
2024-05-13 06:58:35 +02:00
Kconfig
- Sumanth Korikkar has taught s390 to allocate hotplug-time page frames
2024-03-14 17:43:30 -07:00
Kconfig.binfmt
exec: Add KUnit test for bprm_stack_limits()
2024-06-19 13:13:55 -07:00
kernel_read_file.c
…
libfs.c
libfs: Introduce case-insensitive string comparison helper
2024-06-07 17:00:44 +02:00
locks.c
filelock: Fix fcntl/close race recovery compat path
2024-07-24 10:53:14 +02:00
Makefile
vfs-6.9.pidfd
2024-03-11 10:21:06 -07:00
mbcache.c
vfs: remove SLAB_MEM_SPREAD flag usage
2024-02-27 11:21:31 +01:00
mnt_idmapping.c
fs/mnt_idmapping.c: Return -EINVAL when no map is written
2024-02-08 10:12:37 +01:00
mount.h
vfs-6.11.mount
2024-07-15 11:54:04 -07:00
mpage.c
buffer: Remove calls to set and clear the folio error flag
2024-05-31 12:31:43 +02:00
namei.c
vfs: correct the comments of vfs_*() helpers
2024-07-24 10:53:12 +02:00
namespace.c
fs: use all available ids
2024-07-24 10:53:13 +02:00
nsfs.c
nsfs: use cleanup guard
2024-07-18 09:50:08 +02:00
open.c
vfs-6.11.misc
2024-07-15 10:52:51 -07:00
pidfs.c
pidfs: handle kernels without namespaces cleanly
2024-07-24 10:53:13 +02:00
pipe.c
sysctl: treewide: constify the ctl_table argument of proc_handlers
2024-07-24 20:59:29 +02:00
pnode.c
…
pnode.h
…
posix_acl.c
lsm/stable-6.9 PR 20240312
2024-03-12 20:03:34 -07:00
proc_namespace.c
fs: rename show_mnt_opts -> show_vfsmnt_opts
2024-06-28 14:36:43 +02:00
read_write.c
fs: Initial atomic write support
2024-06-20 15:19:17 -06:00
readdir.c
readdir: Add missing quote in macro comment
2024-06-03 15:49:26 +02:00
remap_range.c
vfs: export remap and write check helpers
2024-04-15 14:54:13 -07:00
select.c
fs/select: rework stack allocation hack for clang
2024-02-20 09:23:52 +01:00
seq_file.c
seq_file: Simplify __seq_puts()
2024-05-02 16:28:20 +02:00
signalfd.c
signalfd: drop an obsolete comment
2024-05-24 13:34:07 +02:00
splice.c
remove call_{read,write}_iter() functions
2024-04-15 16:03:25 -04:00
stack.c
…
stat.c
for-6.11/block-20240710
2024-07-15 14:20:22 -07:00
statfs.c
…
super.c
fs/super.c: improve get_tree() error message
2024-08-22 02:07:23 -04:00
sync.c
…
sysctls.c
…
timerfd.c
timerfd: convert to ->read_iter()
2024-04-10 16:23:02 -06:00
userfaultfd.c
mm: provide mm_struct and address to huge_ptep_get()
2024-07-12 15:52:15 -07:00
utimes.c
…
xattr.c
vfs: Fix potential circular locking through setxattr() and removexattr()
2024-07-24 10:53:14 +02:00