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Yushan Zhou 72b5d5aef2 kernfs: fix potential NULL dereference in __kernfs_remove 
When lockdep is enabled, lockdep_assert_held_write would
cause potential NULL pointer dereference.

Fix the following smatch warnings:

fs/kernfs/dir.c:1353 __kernfs_remove() warn: variable dereferenced before check 'kn' (see line 1346)

Fixes: 393c3714081a ("kernfs: switch global kernfs_rwsem lock to per-fs lock")
Signed-off-by: Yushan Zhou <katrinzhou@tencent.com>
Link: https://lore.kernel.org/r/20220630082512.3482581-1-zys.zljxml@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-07-01 10:36:36 +02:00
..
dir.c
kernfs: fix potential NULL dereference in __kernfs_remove
2022-07-01 10:36:36 +02:00
file.c
kernfs: Replace global kernfs_open_file_mutex with hashed mutexes.
2022-06-27 16:46:15 +02:00
inode.c
kernfs: switch global kernfs_rwsem lock to per-fs lock
2021-11-24 13:55:16 +01:00
Kconfig
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
kernfs-internal.h
kernfs: Replace global kernfs_open_file_mutex with hashed mutexes.
2022-06-27 16:46:15 +02:00
Makefile
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
mount.c
kernfs: Replace global kernfs_open_file_mutex with hashed mutexes.
2022-06-27 16:46:15 +02:00
symlink.c
kernfs: switch global kernfs_rwsem lock to per-fs lock
2021-11-24 13:55:16 +01:00