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Ryusuke Konishi 1ae24bbbb3 nilfs2: prevent general protection fault in nilfs_clear_dirty_page() 
commit 782e53d0c1 upstream.

In a syzbot stress test that deliberately causes file system errors on
nilfs2 with a corrupted disk image, it has been reported that
nilfs_clear_dirty_page() called from nilfs_clear_dirty_pages() can cause a
general protection fault.

In nilfs_clear_dirty_pages(), when looking up dirty pages from the page
cache and calling nilfs_clear_dirty_page() for each dirty page/folio
retrieved, the back reference from the argument page to "mapping" may have
been changed to NULL (and possibly others).  It is necessary to check this
after locking the page/folio.

So, fix this issue by not calling nilfs_clear_dirty_page() on a page/folio
after locking it in nilfs_clear_dirty_pages() if the back reference
"mapping" from the page/folio is different from the "mapping" that held
the page/folio just before.

Link: https://lkml.kernel.org/r/20230612021456.3682-1-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: syzbot+53369d11851d8f26735c@syzkaller.appspotmail.com
Closes: https://lkml.kernel.org/r/000000000000da4f6b05eb9bf593@google.com
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-06-28 10:14:19 +02:00
..
9p 9p: missing chunk of "fs/9p: Don't update file type when updating file attributes" 2022-06-25 11:46:24 +02:00
adfs fs/adfs: super: fix use-after-free bug 2019-08-06 19:05:21 +02:00
affs affs: initialize fsdata in affs_truncate() 2023-02-06 07:46:28 +01:00
afs afs: Fix some tracing details 2020-04-02 16:34:33 +02:00
autofs4 autofs: fix a leak in autofs_expire_indirect() 2019-12-17 20:37:24 +01:00
befs
bfs
btrfs btrfs: unset reloc control if transaction commit fails in prepare_to_relocate() 2023-06-14 10:35:26 +02:00
cachefiles cachefiles: Handle readpage error correctly 2020-11-05 11:07:05 +01:00
ceph ceph: fix use-after-free bug for inodes when flushing capsnaps 2023-06-14 10:35:26 +02:00
cifs cifs: fix pcchunk length type in smb2_copychunk_range 2023-05-17 11:11:49 +02:00
coda coda: add error handling for fget 2019-08-06 19:05:23 +02:00
configfs configfs: fix a race in configfs_{,un}register_subsystem() 2022-03-02 11:33:56 +01:00
cramfs
crypto fscrypt: don't ignore minor_hash when hash is 0 2021-07-20 16:17:45 +02:00
debugfs debugfs: fix use-after-free on symlink traversal 2019-05-08 07:20:49 +02:00
devpts fs/devpts: always delete dcache dentry-s in dput() 2019-03-23 14:35:21 +01:00
dlm fs: dlm: handle -EBUSY first in lock arg validation 2022-10-26 13:16:55 +02:00
ecryptfs Revert "ecryptfs: replace BUG_ON with error handling code" 2021-05-26 11:47:00 +02:00
efivarfs efivarfs: revert "fix memory leak in efivarfs_create()" 2020-12-02 08:34:44 +01:00
efs
exofs exofs_mount(): fix leaks on failure exits 2019-12-05 15:37:28 +01:00
exportfs exportfs: fix 'passing zero to ERR_PTR()' warning 2020-01-27 14:46:06 +01:00
ext2 ext2: Check block size validity during mount 2023-05-30 12:38:34 +01:00
ext4 ext4: only check dquot_initialize_needed() when debugging 2023-06-14 10:35:26 +02:00
f2fs f2fs: fix information leak in f2fs_move_inline_dirents() 2023-03-11 16:26:44 +01:00
fat fat: add ratelimit to fat*_ent_bread() 2022-06-14 16:53:46 +02:00
freevxfs
fscache fscache: fix race between enablement and dropping of object 2018-12-17 09:28:53 +01:00
fuse fuse: limit nsec 2022-08-25 11:11:12 +02:00
gfs2 gfs2: Fix inode height consistency check 2023-05-30 12:38:35 +01:00
hfs hfs: fix missing hfs_bnode_get() in __hfs_bnode_create 2023-03-11 16:26:44 +01:00
hfsplus fs: hfsplus: remove WARN_ON() from hfsplus_cat_{read,write}_inode() 2023-05-30 12:38:34 +01:00
hostfs
hpfs
hugetlbfs hugetlbfs: hugetlb_fault_mutex_hash() cleanup 2021-06-03 08:36:25 +02:00
isofs isofs: Fix out of bound access for corrupted isofs image 2021-11-12 14:28:24 +01:00
jbd2 jbd2: fix assertion 'jh->b_frozen_data == NULL' failure when journal aborted 2022-08-25 11:11:23 +02:00
jffs2 jffs2: fix memory leak in jffs2_do_fill_super 2022-06-14 16:53:57 +02:00
jfs fs/jfs: fix shift exponent db_agl2size negative 2023-03-11 16:26:50 +01:00
kernfs kernfs: fix use-after-free in __kernfs_remove 2022-11-03 23:50:53 +09:00
lockd lockd: don't use interval-based rebinding over TCP 2020-12-29 13:46:57 +01:00
minix fs/minix: reject too-large maximum file size 2020-08-21 09:48:15 +02:00
ncpfs
nfs NFSv4.1: Always send a RECLAIM_COMPLETE after establishing lease 2023-05-17 11:11:45 +02:00
nfs_common nfs_common: need lock during iterate through the list 2020-12-29 13:47:01 +01:00
nfsd nfsd: fix handling of readdir in v4root vs. mount upcall timeout 2023-01-18 09:26:41 +01:00
nilfs2 nilfs2: prevent general protection fault in nilfs_clear_dirty_page() 2023-06-28 10:14:19 +02:00
nls
notify fsnotify: fix wrong lockdep annotations 2022-06-14 16:53:48 +02:00
ntfs ntfs: check overflow when iterating ATTR_RECORDs 2022-11-25 17:36:55 +01:00
ocfs2 ocfs2: check new file size on fallocate call 2023-06-21 15:38:58 +02:00
omfs
openpromfs
orangefs orangefs: Fix kmemleak in orangefs_prepare_debugfs_help_string() 2023-01-18 09:26:33 +01:00
overlayfs ovl: fix missing negative dentry check in ovl_rename() 2021-10-17 10:08:32 +02:00
proc mm: hugetlb: proc: check for hugetlb shared PMD in /proc/PID/smaps 2023-02-22 12:46:03 +01:00
pstore pstore: Revert pmsg_lock back to a normal mutex 2023-05-17 11:11:43 +02:00
qnx4 qnx4: work around gcc false positive warning bug 2021-10-06 15:05:08 +02:00
qnx6
quota quota: Check next/prev free block number after reading from quota file 2022-10-26 13:16:56 +02:00
ramfs ramfs: fix nommu mmap with gaps in the page cache 2020-10-29 09:07:11 +01:00
reiserfs reiserfs: Add security prefix to xattr name in reiserfs_security_write() 2023-05-17 11:11:38 +02:00
romfs romfs: fix uninitialized memory leak in romfs_dev_read() 2020-08-26 10:29:54 +02:00
squashfs revert "squashfs: harden sanity check in squashfs_read_xattr_id_table" 2023-02-22 12:46:05 +01:00
sysfs fs: sysfs_emit_at: Remove PAGE_SIZE alignment check 2023-03-22 13:26:13 +01:00
sysv fs: sysv: Fix sysv_nblocks() returns wrong value 2023-01-18 09:26:11 +01:00
tracefs tracefs: Only clobber mode/uid/gid on remount if asked 2022-09-20 11:51:31 +02:00
ubifs ubifs: Free memory for tmpfile name 2023-05-17 11:11:39 +02:00
udf udf: Fix file corruption when appending just after end of preallocated extent 2023-03-11 16:26:45 +01:00
ufs fs/ufs: avoid potential u32 multiplication overflow 2020-08-21 09:48:22 +02:00
xfs xfs: remove incorrect ASSERT in xfs_rename 2022-07-12 16:27:28 +02:00
aio.c aio: fix mremap after fork null-deref 2023-02-22 12:46:05 +01:00
anon_inodes.c
attr.c vfs: Check the truncate maximum size in inode_newsize_ok() 2022-08-25 11:11:11 +02:00
bad_inode.c
binfmt_aout.c
binfmt_elf.c fs/binfmt_elf.c: allocate initialized memory in fill_thread_core_info() 2020-06-03 08:18:03 +02:00
binfmt_elf_fdpic.c
binfmt_em86.c
binfmt_flat.c binfmt_flat: do not stop relocating GOT entries prematurely on riscv 2022-06-14 16:53:43 +02:00
binfmt_misc.c binfmt_misc: fix shift-out-of-bounds in check_special_flags 2023-01-18 09:26:29 +01:00
binfmt_script.c exec: load_script: Do not exec truncated interpreter path 2019-11-06 12:42:59 +01:00
block_dev.c block: reexpand iov_iter after read/write 2021-05-22 10:57:43 +02:00
buffer.c mm: fs: initialize fsdata passed to write_begin/write_end interface 2022-11-25 17:36:55 +01:00
char_dev.c chardev: fix error handling in cdev_device_add() 2023-01-18 09:26:24 +01:00
compat.c
compat_binfmt_elf.c
compat_ioctl.c fix compat handling of FICLONERANGE, FIDEDUPERANGE and FS_IOC_FIEMAP 2020-01-09 10:17:58 +01:00
coredump.c coredump: fix crash when umh is disabled 2020-05-20 08:16:58 +02:00
dax.c dax: pass NOWAIT flag to iomap_apply 2020-03-11 18:02:43 +01:00
dcache.c fs/dcache: Fix incorrect nr_dentry_unused accounting in shrink_dcache_sb() 2019-02-06 17:31:34 +01:00
dcookies.c
direct-io.c fs: direct-io: fix missing sdio->boundary 2021-04-16 11:57:48 +02:00
drop_caches.c fs: avoid softlockups in s_inodes iterators 2020-01-12 12:11:59 +01:00
eventfd.c
eventpoll.c ep_create_wakeup_source(): dentry name can change under you... 2020-10-14 09:51:09 +02:00
exec.c exec: Force single empty string when argv is empty 2022-06-06 08:20:57 +02:00
fcntl.c
fhandle.c
file.c fs: prevent out-of-bounds array speculation when closing a file descriptor 2023-03-17 08:30:36 +01:00
file_table.c fs: add fget_many() and fput_many() 2021-12-08 08:46:55 +01:00
filesystems.c fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once() 2020-04-24 08:00:43 +02:00
fs-writeback.c writeback: fix call of incorrect macro 2023-05-17 11:11:48 +02:00
fs_pin.c
fs_struct.c
inode.c fs: fix UAF/GPF bug in nilfs_mdt_destroy 2022-10-26 13:16:51 +02:00
internal.h
ioctl.c
iomap.c iomap: Fix pipe page leakage during splicing 2019-12-17 20:38:57 +01:00
Kconfig
Kconfig.binfmt
libfs.c libfs: add DEFINE_SIMPLE_ATTRIBUTE_SIGNED for signed value 2023-01-18 09:26:10 +01:00
locks.c locks: print unsigned ino in /proc/locks 2020-01-09 10:17:55 +01:00
Makefile
mbcache.c
mount.h
mpage.c
namei.c mm: fs: initialize fsdata passed to write_begin/write_end interface 2022-11-25 17:36:55 +01:00
namespace.c VFS: Fix memory leak caused by concurrently mounting fs with subtype 2022-05-15 19:40:27 +02:00
no-block.c
nsfs.c
open.c cifs_atomic_open(): fix double-put on late allocation failure 2020-03-20 10:54:16 +01:00
pipe.c pipe: increase minimum default pipe size to 2 pages 2021-08-15 13:03:31 +02:00
pnode.c pnode: terminate at peers of source 2023-01-18 09:26:35 +01:00
pnode.h
posix_acl.c
proc_namespace.c
read_write.c vfs: avoid problematic remapping requests into partial EOF block 2019-12-01 09:13:51 +01:00
readdir.c readdir: make sure to verify directory entry for legacy interfaces too 2021-04-28 12:08:41 +02:00
select.c kernel, fs: Introduce and use set_restart_fn() and arch_set_restart_data() 2021-03-24 11:05:05 +01:00
seq_file.c seq_file: disallow extremely large seq buffer allocations 2021-07-20 16:17:55 +02:00
signalfd.c signalfd: use wake_up_pollfree() 2021-12-14 10:16:55 +01:00
splice.c Revert "fs: check FMODE_LSEEK to control internal pipe splicing" 2022-10-26 13:16:56 +02:00
stack.c
stat.c stat: fix inconsistency between struct stat and struct compat_stat 2022-04-27 13:15:30 +02:00
statfs.c statfs: enforce statfs[64] structure initialization 2023-05-30 12:38:36 +01:00
super.c vfs: make freeze_super abort when sync_filesystem returns error 2022-02-23 11:57:33 +01:00
sync.c
timerfd.c
userfaultfd.c userfaultfd: require CAP_SYS_PTRACE for UFFD_FEATURE_EVENT_FORK 2020-01-04 13:59:58 +01:00
utimes.c
xattr.c fs: don't audit the capability check in simple_xattr_list() 2023-01-18 09:26:09 +01:00