Amir Goldstein bb43c568f7 kernfs: annotate different lockdep class for of->mutex of writable files ... commit 16b52bbee4 upstream. 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: 0fedefd4c4 ("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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-04-17 11:23:40 +02:00
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Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
dir.c	kernfs: RCU protect kernfs_nodes and avoid kernfs_idr_lock in kernfs_find_and_get_node_by_id()	2024-04-13 13:10:09 +02:00
file.c	kernfs: annotate different lockdep class for of->mutex of writable files	2024-04-17 11:23:40 +02:00
inode.c	vfs-6.7.ctime	2023-10-30 09:47:13 -10:00
kernfs-internal.h	kernfs: RCU protect kernfs_nodes and avoid kernfs_idr_lock in kernfs_find_and_get_node_by_id()	2024-04-13 13:10:09 +02:00
mount.c	kernfs: d_obtain_alias(NULL) will do the right thing...	2023-12-20 07:24:35 +01:00
symlink.c	kernfs: fix all kernel-doc warnings and multiple typos	2022-11-23 19:28:26 +01:00