Jan Kara a48bacee05 inotify: Avoid reporting event with invalid wd ... commit c915d8f591 upstream. When inotify_freeing_mark() races with inotify_handle_inode_event() it can happen that inotify_handle_inode_event() sees that i_mark->wd got already reset to -1 and reports this value to userspace which can confuse the inotify listener. Avoid the problem by validating that wd is sensible (and pretend the mark got removed before the event got generated otherwise). CC: stable@vger.kernel.org Fixes: 7e790dd5fc ("inotify: fix error paths in inotify_update_watch") Message-Id: <20230424163219.9250-1-jack@suse.cz> Reported-by: syzbot+4a06d4373fd52f0b2f9c@syzkaller.appspotmail.com Reviewed-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-05-17 14:01:55 +02:00
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dnotify	dnotify: use fsnotify group lock helpers	2022-04-25 14:37:34 +02:00
fanotify	fanotify,audit: Allow audit to use the full permission event response	2023-02-07 12:53:53 +01:00
inotify	inotify: Avoid reporting event with invalid wd	2023-05-17 14:01:55 +02:00
Kconfig	fs/notify: Remove "select SRCU"	2023-02-02 16:26:06 -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
fdinfo.c	fanotify: prepare for setting event flags in ignore mask	2022-07-01 14:51:13 +02:00
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: Fix comment typo	2022-07-26 13:38:47 +02:00
fsnotify.h	fsnotify: remove unused declaration	2022-09-09 11:40:03 +02:00
group.c	fsnotify: create helpers for group mark_mutex lock	2022-04-25 14:37:22 +02:00
mark.c	fsnotify: allow adding an inode mark without pinning inode	2022-04-25 14:42:45 +02:00
notification.c	fsnotify: Pass group argument to free_event	2021-10-27 12:34:18 +02:00