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cb184dd19154fc486fa3d9e02afe70a97e54e055
linux/fs
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Edward Adam Davis cb184dd191 fs: init flags_valid before calling vfs_fileattr_get 
syzbot reported a uninit-value bug in [1].

Similar to the "*get" context where the kernel's internal file_kattr
structure is initialized before calling vfs_fileattr_get(), we should
use the same mechanism when using fa.

[1]
BUG: KMSAN: uninit-value in fuse_fileattr_get+0xeb4/0x1450 fs/fuse/ioctl.c:517
 fuse_fileattr_get+0xeb4/0x1450 fs/fuse/ioctl.c:517
 vfs_fileattr_get fs/file_attr.c:94 [inline]
 __do_sys_file_getattr fs/file_attr.c:416 [inline]

Local variable fa.i created at:
 __do_sys_file_getattr fs/file_attr.c:380 [inline]
 __se_sys_file_getattr+0x8c/0xbd0 fs/file_attr.c:372

Reported-by: syzbot+7c31755f2cea07838b0c@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=7c31755f2cea07838b0c
Tested-by: syzbot+7c31755f2cea07838b0c@syzkaller.appspotmail.com
Signed-off-by: Edward Adam Davis <eadavis@qq.com>
Link: https://patch.msgid.link/tencent_B6C4583771D76766D71362A368696EC3B605@qq.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-02-14 13:17:43 +01:00
..
9p
Merge tag 'vfs-7.0-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2026-02-09 15:13:05 -08:00
adfs
kernel.h: drop hex.h and update all hex.h users
2026-01-20 19:44:19 -08:00
affs
affs: add setlease file operation
2026-01-12 10:55:45 +01:00
afs
Merge tag 'net-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
2025-12-03 17:24:33 -08:00
autofs
Merge tag 'vfs-6.19-rc1.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2025-12-05 15:52:30 -08:00
befs
fs: add setlease to generic_ro_fops and read-only filesystem directory operations
2026-01-12 10:55:45 +01:00
bfs
Merge tag 'vfs-6.19-rc1.inode' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2025-12-01 09:02:34 -08:00
btrfs
Merge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux
2026-02-12 10:41:34 -08:00
cachefiles
Merge tag 'vfs-6.19-rc1.directory.locking' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2025-12-01 16:13:46 -08:00
ceph
Merge tag 'vfs-7.0-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2026-02-09 15:13:05 -08:00
coda
Coccinelle-based conversion to use ->i_state accessors
2025-10-20 20:22:26 +02:00
configfs
Merge tag 'pull-persistency' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2025-12-05 14:36:21 -08:00
cramfs
fs: add setlease to generic_ro_fops and read-only filesystem directory operations
2026-01-12 10:55:45 +01:00
crypto
blk-crypto: handle the fallback above the block layer
2026-01-11 12:55:41 -07:00
debugfs
debugfs: Fix memleak in debugfs_change_name().
2025-12-19 16:43:40 +01:00
devpts
convert devpts
2025-11-16 01:35:04 -05:00
dlm
Merge tag 'locking-core-2026-02-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2026-02-10 12:28:44 -08:00
ecryptfs
Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-02-12 12:13:01 -08:00
efivarfs
Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-02-12 12:13:01 -08:00
efs
fs: add setlease to generic_ro_fops and read-only filesystem directory operations
2026-01-12 10:55:45 +01:00
erofs
Merge tag 'erofs-for-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
2026-02-09 16:08:40 -08:00
exfat
exfat: add setlease file operation
2026-01-12 10:55:46 +01:00
exportfs
…
ext2
Merge tag 'vfs-7.0-rc1.fserror' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2026-02-09 12:21:37 -08:00
ext4
Merge tag 'mm-stable-2026-02-11-19-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-02-12 11:32:37 -08:00
f2fs
Merge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux
2026-02-12 10:41:34 -08:00
fat
Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-02-12 12:13:01 -08:00
freevxfs
fs: add setlease to generic_ro_fops and read-only filesystem directory operations
2026-01-12 10:55:45 +01:00
fuse
fs: fuse: fix max() of incompatible types
2026-02-09 15:19:43 -08:00
gfs2
Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-02-12 12:13:01 -08:00
hfs
hfs: Replace BUG_ON with error handling for CNID count checks
2026-01-06 12:39:19 -08:00
hfsplus
hfsplus: avoid double unload_nls() on mount failure
2026-02-06 15:20:00 -08:00
hostfs
Merge tag 'uml-for-linux-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux
2025-12-05 16:30:56 -08:00
hpfs
Merge tag 'vfs-6.19-rc1.fs_header' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2025-12-01 14:18:01 -08:00
hugetlbfs
Merge tag 'pull-persistency' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2025-12-05 14:36:21 -08:00
iomap
Merge tag 'for-7.0/block-stable-pages-20260206' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
2026-02-09 18:14:52 -08:00
isofs
Merge tag 'fs_for_v6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2026-02-12 10:57:57 -08:00
jbd2
jbd2: fix the inconsistency between checksum and data in memory for journal sb
2025-11-26 17:05:47 -05:00
jffs2
jffs2: add setlease file operation
2026-01-12 10:55:46 +01:00
jfs
Merge tag 'jfs-7.0' of github.com:kleikamp/linux-shaggy
2026-02-12 09:30:56 -08:00
kernfs
fs/kernfs: null-ptr deref in simple_xattrs_free()
2025-12-23 16:14:43 +01:00
lockd
sunrpc: allow svc_recv() to return -ETIMEDOUT and -EBUSY
2026-01-28 10:15:42 -05:00
minix
Merge tag 'vfs-7.0-rc1.minix' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2026-02-09 13:38:07 -08:00
netfs
netfs: avoid double increment of retry_count in subreq
2026-02-08 17:07:43 -06:00
nfs
Merge tag 'nfs-for-7.0-1' of git://git.linux-nfs.org/projects/anna/linux-nfs
2026-02-12 17:49:33 -08:00
nfs_common
NFSD: Remove NFSERR_EAGAIN
2026-01-02 13:43:41 -05:00
nfsd
Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-02-12 12:13:01 -08:00
nilfs2
Merge tag 'nilfs2-v7.0-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/vdubeyko/nilfs2
2026-02-09 15:55:41 -08:00
nls
fs/nls: Fix inconsistency between utf8_to_utf32() and utf32_to_utf8()
2025-12-01 11:58:06 +02:00
notify
fsnotify: Use connector list for destroying inode marks
2026-01-23 13:26:37 +01:00
ntfs3
Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-02-12 12:13:01 -08:00
ocfs2
Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-02-12 12:13:01 -08:00
omfs
Merge tag 'vfs-6.19-rc1.fs_header' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2025-12-01 14:18:01 -08:00
openpromfs
Coccinelle-based conversion to use ->i_state accessors
2025-10-20 20:22:26 +02:00
orangefs
Merge tag 'for-linus-7.0-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux
2026-02-12 08:57:31 -08:00
overlayfs
Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-02-12 12:13:01 -08:00
proc
Merge tag 'mm-hotfixes-stable-2026-02-13-07-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-02-13 12:13:27 -08:00
pstore
pstore/ram: fix buffer overflow in persistent_ram_save_old()
2026-02-06 16:50:35 -08:00
qnx4
fs: add setlease to generic_ro_fops and read-only filesystem directory operations
2026-01-12 10:55:45 +01:00
qnx6
fs: add setlease to generic_ro_fops and read-only filesystem directory operations
2026-01-12 10:55:45 +01:00
quota
Merge tag 'fs_for_v6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2026-02-12 10:57:57 -08:00
ramfs
Merge tag 'pull-persistency' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2025-12-05 14:36:21 -08:00
resctrl
fs/resctrl: Move RMID initialization to first mount
2026-01-10 11:46:48 +01:00
romfs
romfs: check sb_set_blocksize() return value
2026-01-13 09:56:58 +01:00
smb
Merge tag 'v7.0-rc-part1-ksmbd-and-smbdirect-fixes' of git://git.samba.org/ksmbd
2026-02-12 08:31:12 -08:00
squashfs
squashfs: add setlease file operation
2026-01-12 10:55:47 +01:00
sysfs
sysfs: remove exports of sysfs_*change_owner()
2026-02-05 16:49:38 +01:00
tests
fs/tests: exec: drop duplicate bprm_stack_limits test vectors
2026-02-03 17:39:00 -08:00
tracefs
convert tracefs
2025-11-16 01:35:03 -05:00
ubifs
fs: add support for non-blocking timestamp updates
2026-01-12 14:01:33 +01:00
udf
Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-02-12 12:13:01 -08:00
ufs
ufs: add setlease file operation
2026-01-12 10:55:48 +01:00
unicode
…
vboxsf
fs: remove simple_nosetlease()
2026-01-12 10:55:48 +01:00
verity
Merge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux
2026-02-12 10:41:34 -08:00
xfs
Merge tag 'mm-stable-2026-02-11-19-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-02-12 11:32:37 -08:00
zonefs
Merge tag 'vfs-6.19-rc1.inode' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2025-12-01 09:02:34 -08:00
aio.c
aio: use credential guards
2025-11-04 12:36:33 +01:00
anon_inodes.c
anon_inodes: convert to FD_ADD()
2025-11-28 12:42:31 +01:00
attr.c
fs,fsverity: reject size changes on fsverity files in setattr_prepare
2026-01-29 09:39:41 -08:00
backing-file.c
Merge tag 'kernel-6.19-rc1.cred' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2025-12-01 13:45:41 -08:00
bad_inode.c
fs: refactor ->update_time handling
2026-01-12 14:01:32 +01:00
binfmt_elf_fdpic.c
Merge tag 'execve-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
2025-07-28 17:11:40 -07:00
binfmt_elf.c
rseq: Provide and use rseq_set_ids()
2025-11-04 08:33:33 +01:00
binfmt_flat.c
…
binfmt_misc.c
kernel.h: drop hex.h and update all hex.h users
2026-01-20 19:44:19 -08:00
binfmt_script.c
…
bpf_fs_kfuncs.c
bpf: Remove redundant KF_TRUSTED_ARGS flag from all kfuncs
2026-01-02 12:04:28 -08:00
buffer.c
Merge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux
2026-02-12 10:41:34 -08:00
char_dev.c
chardev: Switch to guard(mutex) and __free(kfree)
2025-12-24 13:55:51 +01:00
compat_binfmt_elf.c
…
coredump.c
Merge tag 'hardening-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
2026-02-10 08:54:13 -08:00
d_path.c
fold fs_struct->{lock,seq} into a seqlock
2025-07-08 10:25:19 +02:00
dax.c
Merge tag 'mm-stable-2025-12-03-21-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2025-12-05 13:52:43 -08:00
dcache.c
Merge tag 'pull-filename' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2026-02-09 16:58:28 -08:00
direct-io.c
Merge tag 'mm-stable-2025-07-30-15-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2025-07-31 14:57:54 -07:00
drop_caches.c
Coccinelle-based conversion to use ->i_state accessors
2025-10-20 20:22:26 +02:00
eventfd.c
eventfd: convert do_eventfd() to FD_PREPARE()
2025-11-28 12:42:31 +01:00
eventpoll.c
eventpoll: convert do_epoll_create() to FD_PREPARE()
2025-11-28 12:42:32 +01:00
exec.c
Merge tag 'pull-filename' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2026-02-09 16:58:28 -08:00
fcntl.c
vfs: expose delegation support to userland
2025-11-12 09:38:37 +01:00
fhandle.c
name_to_handle_at(): use CLASS(filename_uflags)
2026-01-16 12:52:03 -05:00
file_attr.c
fs: init flags_valid before calling vfs_fileattr_get
2026-02-14 13:17:43 +01:00
file_table.c
Merge tag 'erofs-for-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
2026-02-09 16:08:40 -08:00
file.c
Merge tag 'vfs-6.19-rc1.fd_prepare.fs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2025-12-01 17:32:07 -08:00
filesystems.c
sysfs(2): fs_index() argument is _not_ a pathname
2026-01-16 12:52:04 -05:00
fs_context.c
fs: Remove internal old mount API code
2025-12-15 14:48:33 +01:00
fs_dirent.c
fs: rename fs_types.h to fs_dirent.h
2025-11-05 09:51:30 +01:00
fs_parser.c
…
fs_pin.c
…
fs_struct.c
fs: add <linux/init_task.h> for 'init_fs'
2026-01-14 16:50:37 +01:00
fs-writeback.c
Merge tag 'cgroup-for-6.20' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2026-02-11 13:20:50 -08:00
fserror.c
fs: report filesystem and file I/O errors to fsnotify
2026-01-13 09:58:01 +01:00
fsopen.c
Merge tag 'pull-filename' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2026-02-09 16:58:28 -08:00
init.c
Merge tag 'pull-filename' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2026-02-09 16:58:28 -08:00
inode.c
Merge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux
2026-02-12 10:41:34 -08:00
internal.h
Merge tag 'pull-filename' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2026-02-09 16:58:28 -08:00
ioctl.c
fs: remove vfs_ioctl export
2025-09-01 13:08:01 +02:00
Kconfig
Merge tag 'mm-stable-2025-10-01-19-00' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2025-10-02 18:18:33 -07:00
Kconfig.binfmt
binfmt_elf: preserve original ELF e_flags for core dumps
2025-09-03 20:49:32 -07:00
kernel_read_file.c
…
libfs.c
fs: remove simple_nosetlease()
2026-01-12 10:55:48 +01:00
locks.c
Merge tag 'nfsd-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux
2026-02-12 08:23:53 -08:00
Makefile
Merge tag 'vfs-7.0-rc1.nullfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2026-02-09 13:41:34 -08:00
mbcache.c
…
mnt_idmapping.c
…
mount.h
fs: add immutable rootfs
2026-01-12 16:52:09 +01:00
mpage.c
mpage: convert do_mpage_readpage() to return void type
2025-09-21 14:22:16 -07:00
namei.c
Merge tag 'pull-filename' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2026-02-09 16:58:28 -08:00
namespace.c
Merge tag 'pull-filename' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2026-02-09 16:58:28 -08:00
nsfs.c
mount: add OPEN_TREE_NAMESPACE
2026-01-16 19:21:40 +01:00
nullfs.c
fs: add immutable rootfs
2026-01-12 16:52:09 +01:00
open.c
Merge tag 'pull-filename' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2026-02-09 16:58:28 -08:00
pidfs.c
pidfs: protect PIDFD_GET_* ioctls() via ifdef
2026-01-06 23:08:12 +01:00
pipe.c
Merge tag 'sysctl-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl
2025-12-05 11:15:37 -08:00
pnode.c
umount_tree(): take all victims out of propagation graph at once
2025-09-15 21:26:44 -04:00
pnode.h
umount_tree(): take all victims out of propagation graph at once
2025-09-15 21:26:44 -04:00
posix_acl.c
posix_acl: make posix_acl_to_xattr() alloc the buffer
2026-01-16 10:51:12 +01:00
proc_namespace.c
…
read_write.c
fs: add setlease to generic_ro_fops and read-only filesystem directory operations
2026-01-12 10:55:45 +01:00
readdir.c
readdir: require opt-in for d_type flags
2026-01-12 10:57:34 +01:00
remap_range.c
…
select.c
select: store end_time as timespec64 in restart block
2025-12-24 14:01:57 +01:00
seq_file.c
kernel.h: drop hex.h and update all hex.h users
2026-01-20 19:44:19 -08:00
signalfd.c
signalfd: convert do_signalfd4() to FD_ADD()
2025-11-28 12:42:32 +01:00
splice.c
fs: use min() or umin() instead of min_t()
2025-12-15 14:33:37 +01:00
stack.c
…
stat.c
statx: switch to CLASS(filename_maybe_null)
2026-01-16 12:52:04 -05:00
statfs.c
user_statfs(): switch to CLASS(filename)
2026-01-16 12:52:04 -05:00
super.c
Merge tag 'fsnotify_for_v6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2026-02-12 10:52:46 -08:00
sync.c
Merge tag 'mm-stable-2026-02-11-19-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-02-12 11:32:37 -08:00
sysctls.c
…
timerfd.c
timerfd: convert timerfd_create() to FD_ADD()
2025-11-28 12:42:32 +01:00
userfaultfd.c
Merge tag 'mm-stable-2025-12-03-21-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2025-12-05 13:52:43 -08:00
utimes.c
do_utimes_path(): switch to CLASS(filename_uflags)
2026-01-16 12:52:03 -05:00
xattr.c
filename_...xattr(): don't consume filename reference
2026-01-16 12:52:03 -05:00