android_kernel_xiaomi_sm8450/fs/overlayfs
chenying 69775e4e17 ovl: fix BUG_ON() in may_delete() when called from ovl_cleanup()
commit 52d5a0c6bd8a89f460243ed937856354f8f253a3 upstream.

If function ovl_instantiate() returns an error, ovl_cleanup will be called
and try to remove newdentry from wdir, but the newdentry has been moved to
udir at this time.  This will causes BUG_ON(victim->d_parent->d_inode !=
dir) in fs/namei.c:may_delete.

Signed-off-by: chenying <chenying.kernel@bytedance.com>
Fixes: 01b39dcc95 ("ovl: use inode_insert5() to hash a newly created inode")
Link: https://lore.kernel.org/linux-unionfs/e6496a94-a161-dc04-c38a-d2544633acb4@bytedance.com/
Cc: <stable@vger.kernel.org> # v4.18
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-09-18 13:40:35 +02:00
..
copy_up.c ovl: fix missing revert_creds() on error path 2021-05-14 09:50:05 +02:00
dir.c ovl: fix BUG_ON() in may_delete() when called from ovl_cleanup() 2021-09-18 13:40:35 +02:00
export.c ovl: fix uninitialized pointer read in ovl_lookup_real_one() 2021-09-03 10:09:22 +02:00
file.c ovl: implement volatile-specific fsync error behaviour 2021-02-10 09:29:16 +01:00
inode.c ovl: perform vfs_getxattr() with mounter creds 2021-02-17 11:02:22 +01:00
Kconfig docs: fix broken references to text files 2020-04-20 15:35:59 -06:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
namei.c new helper: inode_wrong_type() 2021-09-08 08:49:01 +02:00
overlayfs.h ovl: invalidate readdir cache on changes to dir with origin 2021-05-14 09:50:35 +02:00
ovl_entry.h ovl: implement volatile-specific fsync error behaviour 2021-02-10 09:29:16 +01:00
readdir.c ovl: invalidate readdir cache on changes to dir with origin 2021-05-14 09:50:35 +02:00
super.c ovl: allow upperdir inside lowerdir 2021-05-07 11:04:33 +02:00
util.c ovl: invalidate readdir cache on changes to dir with origin 2021-05-14 09:50:35 +02:00