linux-stable/fs/notify
Jan Kara 3587188ad5 dnotify: Handle errors from fsnotify_add_mark_locked() in fcntl_dirnotify()
commit b3a0066005 upstream.

fsnotify_add_mark_locked() can fail but we do not check its return
value. This didn't matter before commit 9dd813c15b "fsnotify: Move
mark list head from object into dedicated structure" as none of possible
failures could happen for dnotify but after that commit -ENOMEM can be
returned. Handle this error properly in fcntl_dirnotify() as
otherwise we just hit BUG_ON(dn_mark->dn) in dnotify_free_mark().

Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reported-by: syzkaller
Fixes: 9dd813c15b
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-25 11:07:47 +01:00
..
dnotify dnotify: Handle errors from fsnotify_add_mark_locked() in fcntl_dirnotify() 2018-02-25 11:07:47 +01:00
fanotify fanotify: fix fsnotify_prepare_user_wait() failure 2017-11-30 08:40:45 +00:00
inotify License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fdinfo.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fdinfo.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fsnotify.c fsnotify: pin both inode and vfsmount mark 2017-11-30 08:40:47 +00:00
fsnotify.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
group.c fsnotify: Remove fsnotify_detach_group_marks() 2017-04-10 17:37:36 +02:00
Kconfig rcu: Make SRCU optional by using CONFIG_SRCU 2015-01-06 11:04:29 -08:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mark.c fsnotify: fix pinning group in fsnotify_prepare_user_wait() 2017-11-30 08:40:47 +00:00
notification.c fsnotify: clean up spinlock assertions 2016-10-07 18:46:26 -07:00