Jan Kara 145f54ea33 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 11:53:44 +02:00
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Kconfig	…
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
inotify.h	…
inotify_fsnotify.c	inotify: Avoid reporting event with invalid wd	2023-05-17 11:53:44 +02:00
inotify_user.c	fs: inotify: Fix typo in inotify comment	2022-07-01 14:49:56 +02:00