diff options
| author | Xuanqiang Luo <luoxuanqiang@kylinos.cn> | 2026-07-03 11:13:45 +0800 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2026-07-03 17:11:30 +0200 |
| commit | a3aa899823dda059ab88a58254f9a605e03ec275 (patch) | |
| tree | 279ed3a7a312b5dfa64a301ce562dcf0711ce858 /fs/notify | |
| parent | 4a50a141f05a8d1737661b19ee22ff8455b94409 (diff) | |
fanotify: initialize permission event watchdog state
fanotify permission events are allocated with kmem_cache_alloc(), but
fanotify_alloc_perm_event() does not initialize watchdog_cnt.
The watchdog reads watchdog_cnt after the event is moved to access_list.
A stale value can make it warn too early or skip the warning.
Initialize watchdog_cnt when allocating a permission event.
Fixes: b8cf8fda522d ("fanotify: add watchdog for permission events")
Signed-off-by: Xuanqiang Luo <luoxuanqiang@kylinos.cn>
Link: https://patch.msgid.link/20260703031345.9354-1-xuanqiang.luo@linux.dev
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/notify')
| -rw-r--r-- | fs/notify/fanotify/fanotify.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/notify/fanotify/fanotify.c b/fs/notify/fanotify/fanotify.c index a3555bebad63..b59f0aa43c4b 100644 --- a/fs/notify/fanotify/fanotify.c +++ b/fs/notify/fanotify/fanotify.c @@ -599,6 +599,7 @@ static struct fanotify_event *fanotify_alloc_perm_event(const void *data, pevent->hdr.pad = 0; pevent->hdr.len = 0; pevent->state = FAN_EVENT_INIT; + pevent->watchdog_cnt = 0; pevent->path = *path; /* NULL ppos means no range info */ pevent->ppos = range ? &range->pos : NULL; |