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085556bf8c70e2629e02e79268dac3016a08b8bf
kernel_xiaomi_sm8250/fs
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Ryusuke Konishi 085556bf8c nilfs2: fix null-ptr-deref in block_touch_buffer tracepoint 
commit cd45e963e44b0f10d90b9e6c0e8b4f47f3c92471 upstream.

Patch series "nilfs2: fix null-ptr-deref bugs on block tracepoints".

This series fixes null pointer dereference bugs that occur when using
nilfs2 and two block-related tracepoints.


This patch (of 2):

It has been reported that when using "block:block_touch_buffer"
tracepoint, touch_buffer() called from __nilfs_get_folio_block() causes a
NULL pointer dereference, or a general protection fault when KASAN is
enabled.

This happens because since the tracepoint was added in touch_buffer(), it
references the dev_t member bh->b_bdev->bd_dev regardless of whether the
buffer head has a pointer to a block_device structure.  In the current
implementation, the block_device structure is set after the function
returns to the caller.

Here, touch_buffer() is used to mark the folio/page that owns the buffer
head as accessed, but the common search helper for folio/page used by the
caller function was optimized to mark the folio/page as accessed when it
was reimplemented a long time ago, eliminating the need to call
touch_buffer() here in the first place.

So this solves the issue by eliminating the touch_buffer() call itself.

Link: https://lkml.kernel.org/r/20241106160811.3316-1-konishi.ryusuke@gmail.com
Link: https://lkml.kernel.org/r/20241106160811.3316-2-konishi.ryusuke@gmail.com
Fixes: 5305cb8308 ("block: add block_{touch|dirty}_buffer tracepoint")
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: Ubisectech Sirius <bugreport@valiantsec.com>
Closes: https://lkml.kernel.org/r/86bd3013-887e-4e38-960f-ca45c657f032.bugreport@valiantsec.com
Reported-by: syzbot+9982fb8d18eba905abe2@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=9982fb8d18eba905abe2
Tested-by: syzbot+9982fb8d18eba905abe2@syzkaller.appspotmail.com
Cc: Tejun Heo <tj@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-05 10:59:28 +01:00
..
9p
fs/9p: drop inodes immediately on non-.L too
2024-05-17 11:42:41 +02:00
adfs
…
affs
affs: initialize fsdata in affs_truncate()
2023-02-06 07:49:38 +01:00
afs
afs: fix the usage of read_seqbegin_or_lock() in afs_find_server*()
2024-02-23 08:12:45 +01:00
autofs
autofs: fix memory leak of waitqueues in autofs_catatonic_mode
2023-09-23 10:48:15 +02:00
befs
…
bfs
…
btrfs
btrfs: reinitialize delayed ref list after deleting it from the list
2024-11-17 14:58:07 +01:00
cachefiles
cachefiles: fix memory leak in cachefiles_add_cache()
2024-03-06 14:35:23 +00:00
ceph
ceph: remove the incorrect Fw reference check when dirtying pages
2024-11-08 16:19:10 +01:00
cifs
smb: client: fix OOB in smbCalcSize()
2024-01-08 11:27:37 +01:00
coda
…
configfs
configfs: fix a race in configfs_{,un}register_subsystem()
2022-03-02 11:38:13 +01:00
cramfs
…
crypto
fscrypt: add fscrypt_symlink_getattr() for computing st_size
2021-09-22 11:47:56 +02:00
debugfs
new helper: lookup_positive_unlocked()
2023-09-23 10:47:59 +02:00
devpts
…
dlm
dlm: fix plock lookup when using multiple lockspaces
2023-09-23 10:48:11 +02:00
ecryptfs
ecryptfs: Fix buffer size for tag 66 packet
2024-06-16 13:23:24 +02:00
efivarfs
efivarfs: revert "fix memory leak in efivarfs_create()"
2020-12-02 08:48:12 +01:00
efs
…
exofs
…
exportfs
…
ext2
ext2: fix datatype of block number in ext2_xattr_set2()
2023-09-23 10:48:16 +02:00
ext4
ext4: nested locking for xattr inode
2024-11-08 16:19:16 +01:00
f2fs
f2fs: Require FMODE_WRITE for atomic write ioctls
2024-11-08 16:19:11 +01:00
fat
fat: fix uninitialized variable
2024-11-08 16:19:19 +01:00
freevxfs
…
fscache
fscache: Fix cookie key hashing
2021-09-22 11:48:02 +02:00
fuse
fuse: use unsigned type for getxattr/listxattr size truncation
2024-09-12 11:02:51 +02:00
gfs2
gfs2: setattr_chown: Add missing initialization
2024-09-04 13:13:01 +02:00
hfs
hfs: fix to initialize fields of hfs_inode_info after hfs_alloc_inode()
2024-08-19 05:32:03 +02:00
hfsplus
hfsplus: fix to avoid false alarm of circular locking
2024-08-19 05:31:55 +02:00
hostfs
…
hpfs
…
hugetlbfs
hugetlbfs: hugetlb_fault_mutex_hash() cleanup
2021-06-03 08:38:12 +02:00
isofs
isofs: handle CDs with bad root inode but good Joliet root directory
2024-04-13 12:50:15 +02:00
jbd2
jbd2: stop waiting for space when jbd2_cleanup_journal_tail() returns error
2024-11-08 16:19:14 +01:00
jffs2
jffs2: Fix potential illegal address access in jffs2_free_inode
2024-07-18 11:39:33 +02:00
jfs
jfs: Fix sanity check in dbMount
2024-11-08 16:19:21 +01:00
kernfs
new helper: lookup_positive_unlocked()
2023-09-23 10:47:59 +02:00
lockd
NFS: Remove print_overflow_msg()
2024-11-08 16:19:17 +01:00
minix
minix: fix bug when opening a file with O_DIRECT
2022-04-15 14:15:03 +02:00
nfs
nfs: Fix KMSAN warning in decode_getfattr_attrs()
2024-11-17 14:58:06 +01:00
nfs_common
nfs_common: need lock during iterate through the list
2020-12-30 11:26:02 +01:00
nfsd
NFS: Remove print_overflow_msg()
2024-11-08 16:19:17 +01:00
nilfs2
nilfs2: fix null-ptr-deref in block_touch_buffer tracepoint
2024-12-05 10:59:28 +01:00
nls
fs/nls: make load_nls() take a const parameter
2023-09-23 10:47:58 +02:00
notify
fsnotify: fix wrong lockdep annotations
2022-06-14 16:59:20 +02:00
ntfs
ntfs: check overflow when iterating ATTR_RECORDs
2022-11-25 17:40:30 +01:00
ocfs2
ocfs2: uncache inode which has failed entering the group
2024-12-05 10:59:28 +01:00
omfs
treewide: Remove uninitialized_var() usage
2023-08-11 11:45:01 +02:00
openpromfs
…
orangefs
orangefs: fix out-of-bounds fsid access
2024-07-18 11:39:33 +02:00
overlayfs
ovl: skip overlayfs superblocks at global sync
2023-12-08 08:43:26 +01:00
proc
fs/proc: fix compile warning about variable 'vmcore_mmap_ops'
2024-11-17 14:58:07 +01:00
pstore
pstore/ram: Fix crash when setting number of cpus to an odd number
2024-02-23 08:12:45 +01:00
qnx4
qnx4: work around gcc false positive warning bug
2021-10-06 15:31:20 +02:00
qnx6
…
quota
quota: Remove BUG_ON from dqget()
2024-09-04 13:13:01 +02:00
ramfs
ramfs: fix nommu mmap with gaps in the page cache
2020-10-30 10:38:21 +01:00
reiserfs
reiserfs: Check the return value from __getblk()
2023-09-23 10:47:59 +02:00
romfs
…
squashfs
Squashfs: sanity check symbolic link size
2024-09-12 11:02:54 +02:00
sysfs
fs: sysfs: Fix reference leak in sysfs_break_active_protection()
2024-05-02 16:17:10 +02:00
sysv
sysv: don't call sb_bread() with pointers_lock held
2024-04-13 12:50:15 +02:00
tracefs
tracefs: Only clobber mode/uid/gid on remount if asked
2022-09-20 12:26:48 +02:00
ubifs
ubifs: Set page uptodate in the correct place
2024-04-13 12:50:04 +02:00
udf
udf: fix uninit-value use in udf_get_fileshortad
2024-11-08 16:19:21 +01:00
ufs
…
xfs
treewide: Remove uninitialized_var() usage
2023-08-11 11:45:01 +02:00
aio.c
fs/aio: Check IOCB_AIO_RW before the struct aio_kiocb conversion
2024-04-13 12:50:09 +02:00
anon_inodes.c
…
attr.c
attr: block mode changes of symlinks
2023-09-23 10:48:17 +02:00
bad_inode.c
…
binfmt_aout.c
binfmt: Move install_exec_creds after setup_new_exec to match binfmt_elf
2023-01-18 11:30:42 +01:00
binfmt_elf_fdpic.c
fs: binfmt_elf_efpic: don't use missing interpreter's properties
2024-09-04 13:13:02 +02:00
binfmt_elf.c
elf: don't use MAP_FIXED_NOREPLACE for elf interpreter mappings
2021-10-06 15:31:24 +02:00
binfmt_em86.c
…
binfmt_flat.c
binfmt: Move install_exec_creds after setup_new_exec to match binfmt_elf
2023-01-18 11:30:42 +01:00
binfmt_misc.c
binfmt_misc: cleanup on filesystem umount
2024-09-04 13:13:01 +02:00
binfmt_script.c
…
block_dev.c
block: Don't invalidate pagecache for invalid falloc modes
2024-01-08 11:27:37 +01:00
buffer.c
mm: fs: initialize fsdata passed to write_begin/write_end interface
2022-11-25 17:40:29 +01:00
char_dev.c
chardev: fix error handling in cdev_device_add()
2023-01-18 11:30:27 +01:00
compat_binfmt_elf.c
…
compat_ioctl.c
lsm: new security_file_ioctl_compat() hook
2024-02-23 08:12:58 +01:00
compat.c
…
coredump.c
…
d_path.c
…
dax.c
dax: fix cache flush on PMD-mapped pages
2022-06-14 16:59:24 +02:00
dcache.c
fs: better handle deep ancestor chains in is_subdir()
2024-07-27 10:33:43 +02:00
dcookies.c
…
direct-io.c
fs: direct-io: fix missing sdio->boundary
2021-04-14 08:22:32 +02:00
drop_caches.c
…
eventfd.c
eventfd: prevent underflow for eventfd semaphores
2023-09-23 10:47:59 +02:00
eventpoll.c
ep_create_wakeup_source(): dentry name can change under you...
2020-10-07 08:00:09 +02:00
exec.c
exec: Fix ToCToU between perm check and set-uid/gid usage
2024-08-19 05:32:17 +02:00
fcntl.c
fs: Fix file_set_fowner LSM hook inconsistencies
2024-11-08 16:19:09 +01:00
fhandle.c
do_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak
2024-03-26 18:22:34 -04:00
file_table.c
fs: add fget_many() and fput_many()
2021-12-08 08:50:13 +01:00
file.c
fix bitmap corruption on close_range() with CLOSE_RANGE_UNSHARE
2024-09-04 13:12:59 +02:00
filesystems.c
…
fs_pin.c
…
fs_struct.c
…
fs-writeback.c
writeback: fix call of incorrect macro
2023-05-17 11:13:23 +02:00
inode.c
vfs: fix race between evice_inodes() and find_inode()&iput()
2024-11-08 16:19:09 +01:00
internal.h
…
ioctl.c
…
iomap.c
iomap: Set all uptodate bits for an Uptodate page
2023-11-28 16:46:36 +00:00
Kconfig
…
Kconfig.binfmt
…
libfs.c
libfs: add DEFINE_SIMPLE_ATTRIBUTE_SIGNED for signed value
2023-01-18 11:30:06 +01:00
locks.c
filelock: Correct the filelock owner in fcntl_setlk/fcntl_setlk64
2024-09-04 13:13:07 +02:00
Makefile
…
mbcache.c
mbcache: Avoid nesting of cache->c_list_lock under bit locks
2023-01-18 11:30:51 +01:00
mount.h
…
mpage.c
…
namei.c
fs: Fix error checking for d_hash_and_lookup()
2023-09-23 10:47:59 +02:00
namespace.c
VFS: Fix memory leak caused by concurrently mounting fs with subtype
2022-05-15 19:41:59 +02:00
no-block.c
…
nsfs.c
…
open.c
ftruncate: pass a signed offset
2024-07-05 09:00:35 +02:00
pipe.c
pipe: increase minimum default pipe size to 2 pages
2021-08-12 13:19:43 +02:00
pnode.c
pnode: terminate at peers of source
2023-01-18 11:30:40 +01:00
pnode.h
…
posix_acl.c
…
proc_namespace.c
…
read_write.c
…
readdir.c
readdir: make sure to verify directory entry for legacy interfaces too
2021-04-28 13:16:50 +02:00
select.c
fs/select: rework stack allocation hack for clang
2024-03-26 18:22:34 -04:00
seq_file.c
seq_file: disallow extremely large seq buffer allocations
2021-07-20 16:16:16 +02:00
signalfd.c
signalfd: use wake_up_pollfree()
2021-12-14 10:18:07 +01:00
splice.c
Revert "fs: check FMODE_LSEEK to control internal pipe splicing"
2022-10-26 13:19:21 +02:00
stack.c
…
stat.c
stat: fix inconsistency between struct stat and struct compat_stat
2022-04-27 13:39:44 +02:00
statfs.c
statfs: enforce statfs[64] structure initialization
2023-05-30 12:42:11 +01:00
super.c
vfs: make freeze_super abort when sync_filesystem returns error
2022-02-23 11:58:38 +01:00
sync.c
ovl: skip overlayfs superblocks at global sync
2023-12-08 08:43:26 +01:00
timerfd.c
…
userfaultfd.c
userfaultfd: prevent concurrent API initialization
2021-09-22 11:48:02 +02:00
utimes.c
…
xattr.c
fs: don't audit the capability check in simple_xattr_list()
2023-01-18 11:30:04 +01:00