Chao Yu 897761d165 f2fs: fix to avoid use-after-free issue in f2fs_filemap_fault ... commit eb70d5a6c9 upstream. syzbot reports a f2fs bug as below: BUG: KASAN: slab-use-after-free in f2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49 Read of size 8 at addr ffff88807bb22680 by task syz-executor184/5058 CPU: 0 PID: 5058 Comm: syz-executor184 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0x163/0x540 mm/kasan/report.c:488 kasan_report+0x142/0x170 mm/kasan/report.c:601 f2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49 __do_fault+0x131/0x450 mm/memory.c:4376 do_shared_fault mm/memory.c:4798 [inline] do_fault mm/memory.c:4872 [inline] do_pte_missing mm/memory.c:3745 [inline] handle_pte_fault mm/memory.c:5144 [inline] __handle_mm_fault+0x23b7/0x72b0 mm/memory.c:5285 handle_mm_fault+0x27e/0x770 mm/memory.c:5450 do_user_addr_fault arch/x86/mm/fault.c:1364 [inline] handle_page_fault arch/x86/mm/fault.c:1507 [inline] exc_page_fault+0x456/0x870 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 The root cause is: in f2fs_filemap_fault(), vmf->vma may be not alive after filemap_fault(), so it may cause use-after-free issue when accessing vmf->vma->vm_flags in trace_f2fs_filemap_fault(). So it needs to keep vm_flags in separated temporary variable for tracepoint use. Fixes: 87f3afd366 ("f2fs: add tracepoint for f2fs_vm_page_mkwrite()") Reported-and-tested-by: syzbot+763afad57075d3f862f2@syzkaller.appspotmail.com Closes: https://lore.kernel.org/lkml/000000000000e8222b060f00db3b@google.com Cc: Ed Tsai <Ed.Tsai@mediatek.com> Suggested-by: Hillf Danton <hdanton@sina.com> Signed-off-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2025-07-10 16:03:21 +02:00
..
9p	fs/9p: fix uninitialized values during inode evict	2024-11-22 15:38:37 +01:00
adfs
affs	affs: don't write overlarge OFS data block size fields	2025-04-10 14:37:37 +02:00
afs	afs: Fix the server_list to unuse a displaced server rather than putting it	2025-03-07 16:45:38 +01:00
autofs
befs
bfs
btrfs	btrfs: fix qgroup reservation leak on failure to allocate ordered extent	2025-07-10 16:03:12 +02:00
cachefiles	cachefiles: Fix NULL pointer dereference in object->file	2025-02-17 09:40:42 +01:00
ceph	ceph: fix possible integer overflow in ceph_zero_objects()	2025-07-06 11:00:08 +02:00
coda
configfs	configfs: Do not override creating attribute file failure in populate_attrs()	2025-06-27 11:08:42 +01:00
cramfs	fs: Convert to bdev_open_by_dev()	2024-08-19 06:04:25 +02:00
crypto	fs: Create a generic is_dot_dotdot() utility	2024-10-04 16:29:48 +02:00
debugfs
devpts
dlm	dlm: make tcp still work in multi-link env	2025-06-04 14:41:57 +02:00
ecryptfs	fs: Create a generic is_dot_dotdot() utility	2024-10-04 16:29:48 +02:00
efivarfs	efivarfs: Fix error on non-existent file	2024-12-27 13:58:50 +01:00
efs
erofs	erofs: fix PSI memstall accounting	2025-01-17 13:36:11 +01:00
exfat	exfat: fix the infinite loop in exfat_find_last_cluster()	2025-04-10 14:37:35 +02:00
exportfs
ext2	ext2: Verify bitmap and itable block numbers before using them	2024-08-03 08:54:15 +02:00
ext4	ext4: only dirty folios when data journaling regular files	2025-06-27 11:08:47 +01:00
f2fs	f2fs: fix to avoid use-after-free issue in f2fs_filemap_fault	2025-07-10 16:03:21 +02:00
fat	fat: fix uninitialized variable	2024-10-22 15:46:20 +02:00
freevxfs
fscache	netfs/fscache: Add a memory barrier for FSCACHE_VOLUME_CREATING	2024-12-09 10:31:45 +01:00
fuse	fuse: fix race between concurrent setattrs from multiple nodes	2025-07-06 11:00:06 +02:00
gfs2	gfs2: move msleep to sleepable context	2025-06-27 11:08:42 +01:00
hfs	hfs/hfsplus: fix slab-out-of-bounds in hfs_bnode_read_key	2025-04-25 10:45:47 +02:00
hfsplus	hfs/hfsplus: fix slab-out-of-bounds in hfs_bnode_read_key	2025-04-25 10:45:47 +02:00
hostfs	um: hostfs: avoid issues on inode number reuse by host	2025-04-10 14:37:34 +02:00
hpfs
hugetlbfs
iomap	iomap: skip unnecessary ifs_block_is_uptodate check	2025-05-02 07:51:01 +02:00
isofs	isofs: Prevent the use of too small fid	2025-04-25 10:45:48 +02:00
jbd2	jbd2: fix data-race and null-ptr-deref in jbd2_journal_dirty_metadata()	2025-06-27 11:08:44 +01:00
jffs2	jffs2: check jffs2_prealloc_raw_node_refs() result in few other places	2025-06-27 11:08:58 +01:00
jfs	jfs: validate AG parameters in dbMount() to prevent crashes	2025-07-06 11:00:09 +02:00
kernfs	kernfs: Relax constraint in draining guard	2025-06-19 15:28:16 +02:00
lockd	nfsd: stop setting ->pg_stats for unused stats	2024-08-19 06:04:23 +02:00
minix
netfs
nfs	NFSv4/flexfiles: Fix handling of NFS level errors in I/O	2025-07-10 16:03:18 +02:00
nfs_common
nfsd	nfsd: Initialize ssc before laundromat_work to prevent NULL dereference	2025-06-27 11:08:44 +01:00
nilfs2	nilfs2: do not propagate ENOENT error from nilfs_btree_propagate()	2025-06-19 15:28:23 +02:00
nls
notify	fs: relax assertions on failure to encode file handles	2025-01-23 17:21:19 +01:00
ntfs
ntfs3	fs/ntfs3: handle hdr_first_de() return value	2025-06-19 15:28:07 +02:00
ocfs2	ocfs2: fix possible memory leak in ocfs2_finish_quota_recovery	2025-06-19 15:28:23 +02:00
omfs
openpromfs	openpromfs: finish conversion to the new mount API	2024-06-12 11:11:30 +02:00
orangefs	orangefs: Do not truncate file size	2025-06-04 14:42:02 +02:00
overlayfs	ovl: Check for NULL d_inode() in ovl_dentry_upper()	2025-07-06 11:00:08 +02:00
proc	fs/procfs: fix the comment above proc_pid_wchan()	2025-04-10 14:37:35 +02:00
pstore	pstore: Change kmsg_bytes storage size to u32	2025-06-04 14:42:11 +02:00
qnx4
qnx6
quota	quota: flush quota_release_work upon quota writeback	2024-12-09 10:33:01 +01:00
ramfs
reiserfs	reiserfs: fix uninit-value in comp_keys	2024-08-19 06:04:26 +02:00
romfs	fs: Convert to bdev_open_by_dev()	2024-08-19 06:04:25 +02:00
smb	smb: client: fix readdir returning wrong type with POSIX extensions	2025-07-10 16:03:19 +02:00
squashfs	Squashfs: check return result of sb_min_blocksize	2025-06-19 15:28:23 +02:00
sysfs
sysv
tracefs	eventfs: Use list_del_rcu() for SRCU protected list variable	2024-09-12 11:11:27 +02:00
ubifs	ubifs: skip dumping tnc tree when zroot is null	2025-02-08 09:52:28 +01:00
udf	udf: Make sure i_lenExtents is uptodate on inode eviction	2025-05-22 14:12:19 +02:00
ufs
unicode	Revert "unicode: Don't special case ignorable code points"	2024-12-14 20:00:20 +01:00
vboxsf	vboxsf: fix building with GCC 15	2025-03-22 12:50:41 -07:00
verity	fsverity: use register_sysctl_init() to avoid kmemleak warning	2024-06-16 13:47:33 +02:00
xfs	xfs: don't over-report free space or inodes in statvfs	2025-02-27 04:10:44 -08:00
zonefs
aio.c
anon_inodes.c	fs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass	2025-07-10 16:03:18 +02:00
attr.c
bad_inode.c
binfmt_elf_fdpic.c	fs: binfmt_elf_efpic: don't use missing interpreter's properties	2024-08-29 17:33:33 +02:00
binfmt_elf_test.c
binfmt_elf.c	binfmt_elf: Move brk for static PIE even if ASLR disabled	2025-05-22 14:12:12 +02:00
binfmt_flat.c	binfmt_flat: Fix integer overflow bug on 32 bit systems	2025-02-17 09:40:16 +01:00
binfmt_misc.c	binfmt_misc: cleanup on filesystem umount	2024-08-29 17:33:27 +02:00
binfmt_script.c
buffer.c	buffer: make folio_create_empty_buffers() return a buffer_head	2025-02-08 09:52:26 +01:00
char_dev.c
compat_binfmt_elf.c
coredump.c	coredump: hand a pidfd to the usermode coredump helper	2025-06-04 14:42:24 +02:00
d_path.c
dax.c	fsdax: dax_unshare_iter needs to copy entire blocks	2024-11-08 16:28:19 +01:00
dcache.c	fs: better handle deep ancestor chains in is_subdir()	2024-07-25 09:50:54 +02:00
direct-io.c
drop_caches.c
eventfd.c
eventpoll.c	epoll: Add synchronous wakeup support for ep_poll_callback	2024-12-27 13:58:57 +01:00
exec.c	exec: fix the racy usage of fs_struct->in_exec	2025-04-10 14:37:44 +02:00
fcntl.c	fs: Fix file_set_fowner LSM hook inconsistencies	2024-10-04 16:29:56 +02:00
fhandle.c	fs: Annotate struct file_handle with __counted_by() and use struct_size()	2024-08-19 06:04:28 +02:00
file_table.c	fs: fix proc_handler for sysctl_nr_open	2025-02-08 09:51:42 +01:00
file.c	fs: consistently deref the files table with rcu_dereference_raw()	2025-04-25 10:45:10 +02:00
filesystems.c	fs/filesystems: Fix potential unsigned integer underflow in fs_name()	2025-06-19 15:28:43 +02:00
fs_context.c
fs_parser.c
fs_pin.c
fs_struct.c
fs_types.c
fs-writeback.c	fs/writeback: bail out if there is no more inodes for IO and queued once	2024-06-27 13:49:00 +02:00
fsopen.c
init.c
inode.c	fs/inode: Prevent dump_mapping() accessing invalid dentry.d_name.name	2024-12-09 10:31:41 +01:00
internal.h
ioctl.c
Kconfig	nfs: add missing selections of CONFIG_CRC32	2025-04-25 10:45:46 +02:00
Kconfig.binfmt
kernel_read_file.c
libfs.c	libfs: Use d_children list to iterate simple_offset directories	2025-02-01 18:37:54 +01:00
locks.c	filelock: Fix fcntl/close race recovery compat path	2024-07-27 11:34:10 +02:00
Makefile
mbcache.c
mnt_idmapping.c
mount.h
mpage.c
namei.c	fuse: don't truncate cached, mutated symlink	2025-03-22 12:50:44 -07:00
namespace.c	attach_recursive_mnt(): do not lock the covering tree when sliding something under it	2025-07-06 11:00:11 +02:00
nsfs.c
open.c	openat2: explicitly return -E2BIG for (usize > PAGE_SIZE)	2024-11-01 01:58:32 +01:00
pipe.c
pnode.c
pnode.h
posix_acl.c
proc_namespace.c
read_write.c
readdir.c
remap_range.c
select.c	hrtimer: Use and report correct timerslack values for realtime tasks	2025-03-22 12:50:37 -07:00
seq_file.c
signalfd.c
splice.c	splice: remove duplicate noinline from pipe_clear_nowait	2025-05-02 07:50:45 +02:00
stack.c
stat.c
statfs.c
super.c	fs: Convert to bdev_open_by_dev()	2024-08-19 06:04:25 +02:00
sync.c
sysctls.c
timerfd.c
userfaultfd.c	mm/userfaultfd: fix release hang over concurrent GUP	2025-04-25 10:45:31 +02:00
utimes.c
xattr.c	fs/xattr.c: fix simple_xattr_list()	2025-06-27 11:08:57 +01:00