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linux/fs
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Kiran Kumar Modukuri 4a9e9c90e8 cachefiles: Wait rather than BUG'ing on "Unexpected object collision" 
[ Upstream commit c2412ac45a ]

If we meet a conflicting object that is marked FSCACHE_OBJECT_IS_LIVE in
the active object tree, we have been emitting a BUG after logging
information about it and the new object.

Instead, we should wait for the CACHEFILES_OBJECT_ACTIVE flag to be cleared
on the old object (or return an error).  The ACTIVE flag should be cleared
after it has been removed from the active object tree.  A timeout of 60s is
used in the wait, so we shouldn't be able to get stuck there.

Fixes: 9ae326a690 ("CacheFiles: A cache that backs onto a mounted filesystem")
Signed-off-by: Kiran Kumar Modukuri <kiran.modukuri@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-05-12 17:13:57 +09:00
..
9p
fs/9p: Compare qid.path in v9fs_test_inode
2017-11-30 08:39:05 +00:00
adfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
affs
affs_lookup(): close a race with affs_remove_link()
2018-05-30 07:50:16 +02:00
afs
ANDROID: fs: afs: fix filler function type
2018-03-02 13:27:23 -08:00
autofs4
autofs: mount point create should honour passed in mode
2018-04-24 09:34:18 +02:00
befs
Merge tag 'befs-v4.9-rc1' of git://github.com/luisbg/linux-befs
2016-10-15 12:09:13 -07:00
bfs
Merge remote-tracking branch 'ovl/rename2' into for-linus
2016-10-10 23:02:51 -04:00
btrfs
Btrfs: fix file data corruption after cloning a range and fsync
2023-05-12 16:46:16 +09:00
cachefiles
cachefiles: Wait rather than BUG'ing on "Unexpected object collision"
2023-05-12 17:13:57 +09:00
ceph
ceph: fix dentry leak in splice_dentry()
2023-05-12 17:05:14 +09:00
cifs
Merge 4.9.112 into android-4.9
2018-07-11 16:40:16 +02:00
coda
coda: fix 'kernel memory exposure attempt' in fsync
2017-11-24 08:33:42 +01:00
configfs
configfs: Fix race between create_link and configfs_rmdir
2017-06-24 07:11:12 +02:00
cramfs
more trivial ->iterate_shared conversions
2016-05-09 11:41:14 -04:00
crypto
fscrypt: use unbound workqueue for decryption
2023-05-12 16:41:53 +09:00
debugfs
dentry name snapshots
2017-08-06 18:59:43 -07:00
devpts
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
dlm
dlm: avoid double-free on error path in dlm_device_{register,unregister}
2017-09-09 17:39:40 +02:00
ecryptfs
Merge 4.9.104 into android-4.9
2018-05-30 13:19:56 +02:00
efivarfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
efs
fs/efs/super.c: fix return value
2016-05-20 17:58:30 -07:00
exfat
Amlogic: sync the code from mainline. [1/1]
2020-02-04 13:48:58 +09:00
exofs
ANDROID: fs: exofs: fix filler function type
2018-03-02 13:27:29 -08:00
exportfs
exportfs: be careful to only return expected errors.
2016-10-06 09:07:44 -04:00
ext2
do d_instantiate/unlock_new_inode combinations safely
2018-05-30 07:50:16 +02:00
ext4
ext4: fix spectre gadget in ext4_mb_regular_allocator()
2023-05-12 17:07:46 +09:00
f2fs
f2fs: fix race in between GC and atomic open
2023-05-12 16:40:14 +09:00
fat
fat: fix memory allocation failure handling of match_strdup()
2023-05-12 16:31:04 +09:00
freevxfs
freevxfs: update Kconfig information
2016-06-13 10:20:39 +02:00
fscache
fscache: Allow cancelled operations to be enqueued
2023-05-12 17:13:52 +09:00
fuse
Merge 4.9.111 into android-4.9
2018-07-03 18:27:19 +02:00
gfs2
Merge 4.9.104 into android-4.9
2018-05-30 13:19:56 +02:00
hfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
hfsplus
hfsplus: stop workqueue when fill_super() failed
2018-05-25 16:12:59 +02:00
hostfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
hpfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
hugetlbfs
hugetlbfs: initialize shared policy as part of inode allocation
2017-10-08 10:26:09 +02:00
isofs
isofs: fix timestamps beyond 2027
2017-11-30 08:39:04 +00:00
jbd2
jbd2: don't mark block as modified if the handle is out of credits
2018-07-11 16:26:44 +02:00
jffs2
jffs2: Fix use-after-free bug in jffs2_iget()'s error handling path
2018-05-30 07:50:22 +02:00
jfs
jfs: Fix inconsistency between memory allocation and ea_buf->max_size
2023-05-12 16:46:26 +09:00
kernfs
kernfs: fix regression in kernfs_fop_write caused by wrong type
2018-02-17 13:21:15 +01:00
lockd
Merge 4.9.101 into android-4.9
2018-05-19 14:06:17 +02:00
logfs
ANDROID: fs: logfs: fix filler function type
2018-03-02 13:27:29 -08:00
minix
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
ncpfs
staging: ncpfs: memory corruption in ncp_read_kernel()
2018-03-28 18:39:23 +02:00
nfs
pnfs: Don't release the sequence slot until we've processed layoutget on open
2023-05-12 16:39:59 +09:00
nfs_common
lockd: fix "list_add double add" caused by legacy signal interface
2018-02-03 17:05:38 +01:00
nfsd
nfsd: fix potential use-after-free in nfsd4_decode_getdeviceinfo
2023-05-12 16:39:23 +09:00
nilfs2
do d_instantiate/unlock_new_inode combinations safely
2018-05-30 07:50:16 +02:00
nls
…
notify
Merge 4.9.96 into android-4.9
2018-04-24 11:26:46 +02:00
ntfs
fs: remove the never implemented aio_fsync file operation
2016-10-30 13:09:42 -04:00
ocfs2
ocfs2: ip_alloc_sem should be taken in ocfs2_get_block()
2023-05-12 16:27:47 +09:00
omfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
openpromfs
fs: Replace CURRENT_TIME with current_time() for inode timestamps
2016-09-27 21:06:21 -04:00
orangefs
orangefs: set i_size on new symlink
2018-06-26 08:08:08 +08:00
overlayfs
ovl: filter trusted xattr for non-admin
2018-04-13 19:48:12 +02:00
proc
proc: Fix proc_sys_prune_dcache to hold a sb reference
2023-05-12 16:52:20 +09:00
pstore
Amlogic: sync the code from mainline. [1/1]
2020-02-04 13:48:58 +09:00
qnx4
more trivial ->iterate_shared conversions
2016-05-09 11:41:14 -04:00
qnx6
more trivial ->iterate_shared conversions
2016-05-09 11:41:14 -04:00
quota
quota: Check for register_shrinker() failure.
2018-02-03 17:05:39 +01:00
ramfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
reiserfs
reiserfs: fix broken xattr handling (heap corruption, bad retval)
2023-05-12 17:08:07 +09:00
romfs
romfs: use different way to generate fsid for BLOCK or MTD
2017-06-17 06:41:56 +02:00
sdcardfs
sdcardfs: revert because compile fail [1/1]
2020-12-17 17:32:09 +09:00
squashfs
squashfs: more metadata hardenings
2023-05-12 16:45:29 +09:00
sysfs
sysfs: be careful of error returns from ops->show()
2017-04-12 12:41:11 +02:00
sysv
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
tracefs
fs: Replace CURRENT_TIME with current_time() for inode timestamps
2016-09-27 21:06:21 -04:00
ubifs
UBIFS: Fix potential integer overflow in allocation
2018-07-03 11:23:14 +02:00
udf
udf: Detect incorrect directory size
2018-07-03 11:23:17 +02:00
ufs
do d_instantiate/unlock_new_inode combinations safely
2018-05-30 07:50:16 +02:00
xfs
xfs: detect agfl count corruption and reset agfl
2018-06-06 16:44:32 +02:00
aio.c
fix io_destroy()/aio_complete() race
2018-06-06 16:44:38 +02:00
anon_inodes.c
…
attr.c
ANDROID: vfs: Add permission2 for filesystems with per mount permissions
2017-01-31 10:47:22 -08:00
bad_inode.c
bad_inode: add missing i_op initializers
2017-01-09 08:32:24 +01:00
binfmt_aout.c
fs: fix binfmt_aout.c build error
2016-05-28 16:34:59 -07:00
binfmt_elf_fdpic.c
elf_fdpic_transfer_args_to_stack(): make it generic
2016-07-25 16:51:49 +10:00
binfmt_elf.c
fs, elf: make sure to page align bss in load_elf_library
2018-07-17 11:37:53 +02:00
binfmt_em86.c
fs/binfmt_em86.c: fix incompatible pointer type
2016-08-02 19:35:15 -04:00
binfmt_flat.c
binfmt_flat: allow compressed flat binary format to work on MMU systems
2016-07-28 13:29:12 +10:00
binfmt_misc.c
fs/binfmt_misc.c: do not allow offset overflow
2018-06-26 08:08:09 +08:00
binfmt_script.c
…
block_dev.c
mm: optimize for CMA allocate time
2018-03-05 15:34:36 +08:00
buffer.c
fs: add i_blocksize()
2017-06-14 15:06:00 +02:00
char_dev.c
char_dev: extend dynamic allocation of majors into a higher range
2018-01-18 19:17:32 -07:00
compat_binfmt_elf.c
binfmt_elf: compat: avoid unused function warning
2018-02-25 11:05:55 +01:00
compat_ioctl.c
fs: compat: Remove warning from COMPATIBLE_IOCTL
2018-04-08 12:12:44 +02:00
compat.c
compat: remove compat_printk()
2016-09-27 21:20:53 -04:00
coredump.c
Merge 4.9.36 into android-4.9
2017-07-05 16:18:14 +02:00
dax.c
fs/dax.c: fix inefficiency in dax_writeback_mapping_range()
2018-02-28 10:18:33 +01:00
dcache.c
make sure that __dentry_kill() always invalidates d_seq, unhashed or not
2023-05-12 16:46:53 +09:00
dcookies.c
…
direct-io.c
direct-io: Prevent NULL pointer access in submit_page_section
2017-10-18 09:35:41 +02:00
drop_caches.c
…
eventfd.c
eventfd: document lockless access in eventfd_poll
2016-03-22 15:36:02 -07:00
eventpoll.c
Merge 4.9.48 into android-4.9
2017-09-07 10:32:23 +02:00
exec.c
exec: avoid gcc-8 warning for get_task_comm
2023-05-12 16:38:34 +09:00
fcntl.c
fs/fcntl: f_setown, avoid undefined behaviour
2018-01-31 12:55:52 +01:00
fhandle.c
fs/coredump: prevent fsuid=0 dumps into user-controlled directories
2016-03-22 15:36:02 -07:00
file_table.c
…
file.c
fs/file: more unsigned file descriptors
2016-09-27 18:47:38 -04:00
filesystems.c
find_filesystem(): simplify comparison
2016-01-19 12:02:23 -05:00
fs_pin.c
…
fs_struct.c
ANDROID: fs: Export free_fs_struct and set_fs_pwd
2017-01-31 15:46:26 -08:00
fs-writeback.c
Merge 4.9.100 into android-4.9
2018-05-16 11:39:34 +02:00
inode.c
Revert "Fix up non-directory creation in SGID directories"
2018-08-14 03:25:14 -07:00
internal.h
Merge 4.9.51 into android-4.9
2017-09-20 09:59:51 +02:00
ioctl.c
vfs: cap dedupe request structure size at PAGE_SIZE
2016-09-15 13:29:52 -07:00
iomap.c
iomap: fix integer truncation issues in the zeroing and dirtying helpers
2017-09-20 08:19:59 +02:00
Kconfig
fs: add exfat file system support
2017-09-26 00:32:37 -07:00
Kconfig.binfmt
ARM: 8594/1: enable binfmt_flat on systems with an MMU
2016-08-12 16:47:05 +01:00
libfs.c
libfs: Modify mount_pseudo_xattr to be clear it is not a userspace mount
2017-12-09 22:01:51 +01:00
locks.c
locking, fs/locks: Add missing file_sem locks
2016-10-18 12:21:28 +02:00
Makefile
fs: add exfat file system support
2017-09-26 00:32:37 -07:00
mbcache.c
mbcache: initialize entry->e_referenced in mb_cache_entry_create()
2018-02-22 15:43:48 +01:00
mount.h
mnt: In propgate_umount handle visiting mounts in any order
2017-07-21 07:42:22 +02:00
mpage.c
mm: optimize stack usage for functions [1/1]
2018-12-17 17:21:59 +08:00
namei.c
Merge tag 'v4.9.95' into android-4.9.95
2018-04-20 10:06:49 -07:00
namespace.c
fix __legitimize_mnt()/mntput() race
2023-05-12 16:46:57 +09:00
no-block.c
…
nsfs.c
nsfs: mark dentry with DCACHE_RCUACCESS
2018-02-17 13:21:15 +01:00
open.c
Merge 4.9.37 into android-4.9
2017-07-12 17:07:29 +02:00
pipe.c
pipe: fix off-by-one error when checking buffer limits
2018-02-17 13:21:18 +01:00
pnode.c
Merge 4.9.39 into android-4.9
2017-07-21 08:55:50 +02:00
pnode.h
mnt: Tuck mounts under others instead of creating shadow/side mounts.
2017-03-15 02:21:16 +00:00
posix_acl.c
tmpfs: clear S_ISGID when setting posix ACLs
2017-01-26 08:24:37 +01:00
proc_namespace.c
ANDROID: vfs: Allow filesystems to access their private mount data
2017-01-31 10:47:20 -08:00
read_write.c
BACKPORT: vfs: pass type instead of fn to do_{loop,iter}_readv_writev()
2018-02-28 15:09:59 -08:00
readdir.c
restore killability of old mutex_lock_killable(&inode->i_mutex) users
2016-05-26 00:13:25 -04:00
select.c
fs/select: add vmalloc fallback for select(2)
2016-10-11 15:06:30 -07:00
seq_file.c
seq/proc: modify seq_put_decimal_[u]ll to take a const char *, not char
2016-10-07 18:46:30 -07:00
signalfd.c
…
splice.c
vfs: fix uninitialized flags in splice_to_pipe()
2017-02-23 17:44:35 +01:00
stack.c
…
stat.c
ufs: restore maintaining ->i_blocks
2017-06-14 15:06:01 +02:00
statfs.c
…
super.c
Merge 4.9.86 into android-4.9
2018-03-05 07:38:41 +01:00
sync.c
ANDROID: sched: add a counter to track fsync
2017-03-14 13:16:06 -07:00
timerfd.c
timerfd: Protect the might cancel mechanism proper
2017-05-08 07:47:54 +02:00
userfaultfd.c
Merge 4.9.71 into android-4.9
2017-12-20 10:51:15 +01:00
utimes.c
ANDROID: vfs: Add setattr2 for filesystems with per mount permissions
2017-01-31 10:47:21 -08:00
xattr.c
ANDROID: xattr: Pass EOPNOTSUPP to permission2
2018-01-24 21:19:26 +00:00