diff options
| author | Amir Goldstein <amir73il@gmail.com> | 2024-04-05 17:56:35 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2024-04-14 06:55:46 -0400 |
| commit | 16b52bbee4823b01ab7fe3919373c981a38f3797 (patch) | |
| tree | ce7a54dd66475297874f9a14c370bb8a6aabb9c6 /drivers/bus | |
| parent | fec50db7033ea478773b159e0e2efb135270e3b7 (diff) | |
kernfs: annotate different lockdep class for of->mutex of writable files
The writable file /sys/power/resume may call vfs lookup helpers for
arbitrary paths and readonly files can be read by overlayfs from vfs
helpers when sysfs is a lower layer of overalyfs.
To avoid a lockdep warning of circular dependency between overlayfs
inode lock and kernfs of->mutex, use a different lockdep class for
writable and readonly kernfs files.
Reported-by: syzbot+9a5b0ced8b1bfb238b56@syzkaller.appspotmail.com
Fixes: 0fedefd4c4e3 ("kernfs: sysfs: support custom llseek method for sysfs entries")
Suggested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'drivers/bus')
0 files changed, 0 insertions, 0 deletions