WARNING: lock held when returning to user space in fuse_lock_inode

Status: fixed on 2018/08/28 17:48
Subsystems: fuse
[Documentation on labels]
Reported-by: syzbot+3f7b29af1baa9d0a55be@syzkaller.appspotmail.com
Fix commit: 63576c13bd17 fuse: fix initial parallel dirops
First crash: 2935d, last: 2894d
▶ ▼ Discussions (4)
Title Replies (including bot) Last reply
[PATCH 4.14 000/165] 4.14.68-stable review 173 (173) 2018/10/03 09:14
[PATCH 4.18 000/123] 4.18.6-stable review 145 (145) 2018/09/09 03:58
[PATCH 4.9 000/107] 4.9.125-stable review 105 (105) 2018/09/04 22:51
WARNING: lock held when returning to user space in fuse_lock_inode 4 (5) 2018/07/17 17:12

Sample crash report:
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)

================================================
WARNING: lock held when returning to user space!
4.18.0-rc8+ #182 Not tainted
------------------------------------------------
syz-executor912/4405 is leaving the kernel with locks still held!
1 lock held by syz-executor912/4405:
 #0: (____ptrval____) (&fi->mutex){+.+.}, at: fuse_lock_inode+0xaf/0xe0 fs/fuse/inode.c:363

Crashes (1439):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/08/10 06:05 upstream 112cbae26d18 1fb62d58 .config console log report syz C ci-upstream-kasan-gce-root
2018/08/10 05:17 upstream 112cbae26d18 1fb62d58 .config console log report syz C ci-upstream-kasan-gce-root
2018/08/10 04:27 upstream 112cbae26d18 1fb62d58 .config console log report syz C ci-upstream-kasan-gce
2018/08/10 03:17 upstream 112cbae26d18 1fb62d58 .config console log report syz C ci-upstream-kasan-gce
2018/08/10 02:38 upstream 112cbae26d18 1fb62d58 .config console log report syz C ci-upstream-kasan-gce-root
2018/08/10 01:56 upstream 112cbae26d18 1fb62d58 .config console log report syz C ci-upstream-kasan-gce
2018/08/04 11:32 upstream 0b5b1f9a78b5 df7f6947 .config console log report syz C ci-upstream-kasan-gce-root
2018/08/04 11:09 upstream 0b5b1f9a78b5 df7f6947 .config console log report syz C ci-upstream-kasan-gce
2018/08/04 02:52 upstream 0b5b1f9a78b5 df7f6947 .config console log report syz C ci-upstream-kasan-gce-root
2018/08/04 02:43 upstream 0b5b1f9a78b5 df7f6947 .config console log report syz C ci-upstream-kasan-gce
2018/08/02 17:50 upstream 6b4703768268 0a7cf4ec .config console log report syz C ci-upstream-kasan-gce-root
2018/08/02 17:17 upstream 6b4703768268 0a7cf4ec .config console log report syz C ci-upstream-kasan-gce
2018/07/31 13:13 upstream 527838d470e3 1a381291 .config console log report syz C ci-upstream-kasan-gce
2018/07/28 05:05 upstream 864af0d40cdc ebf656d7 .config console log report syz C ci-upstream-kasan-gce-root
2018/07/28 05:00 upstream 864af0d40cdc ebf656d7 .config console log report syz C ci-upstream-kasan-gce
2018/07/23 00:10 upstream 45ae4df92207 8cc079c3 .config console log report syz C ci-upstream-kasan-gce
2018/07/15 12:48 upstream 37b5dca2898d 92a49505 .config console log report syz C ci-upstream-kasan-gce-root
2018/07/14 07:12 upstream 9d2e34897d8d 92a49505 .config console log report syz C ci-upstream-kasan-gce-root
2018/07/14 01:13 upstream 9d2e34897d8d 92a49505 .config console log report syz C ci-upstream-kasan-gce-root
2018/07/13 13:02 upstream 63f047771621 92a49505 .config console log report syz C ci-upstream-kasan-gce
2018/07/13 02:06 upstream 63f047771621 06c33b3a .config console log report syz C ci-upstream-kasan-gce
2018/07/12 21:17 upstream c25c74b7476e 06c33b3a .config console log report syz C ci-upstream-kasan-gce
2018/07/12 13:48 upstream c25c74b7476e 06c33b3a .config console log report syz C ci-upstream-kasan-gce-root
2018/07/12 13:20 upstream c25c74b7476e 06c33b3a .config console log report syz C ci-upstream-kasan-gce
2018/08/10 03:32 upstream 112cbae26d18 1fb62d58 .config console log report syz C ci-upstream-kasan-gce-386
2018/08/10 02:43 upstream 112cbae26d18 1fb62d58 .config console log report syz C ci-upstream-kasan-gce-386
2018/08/10 02:20 upstream 112cbae26d18 1fb62d58 .config console log report syz C ci-upstream-kasan-gce-386
2018/08/04 11:40 upstream 0b5b1f9a78b5 df7f6947 .config console log report syz ci-upstream-kasan-gce-386
2018/08/04 02:12 upstream 0b5b1f9a78b5 df7f6947 .config console log report syz ci-upstream-kasan-gce-386
2018/08/02 17:45 upstream 6b4703768268 0a7cf4ec .config console log report syz ci-upstream-kasan-gce-386
2018/07/31 12:38 upstream 527838d470e3 1a381291 .config console log report syz ci-upstream-kasan-gce-386
2018/07/13 13:09 upstream 63f047771621 92a49505 .config console log report syz ci-upstream-kasan-gce-386
2018/07/12 19:33 upstream c25c74b7476e 06c33b3a .config console log report syz ci-upstream-kasan-gce-386
2018/07/12 18:53 upstream c25c74b7476e 06c33b3a .config console log report syz ci-upstream-kasan-gce-386
2018/07/12 14:49 upstream c25c74b7476e 06c33b3a .config console log report syz ci-upstream-kasan-gce-386
2018/07/12 13:15 upstream c25c74b7476e 06c33b3a .config console log report syz ci-upstream-kasan-gce-386
2018/08/22 10:42 upstream 0214f46b3a03 95b5c82b .config console log report ci-upstream-kasan-gce-root
2018/08/22 03:47 upstream 0214f46b3a03 95b5c82b .config console log report ci-upstream-kasan-gce
2018/08/21 23:21 upstream 0214f46b3a03 95b5c82b .config console log report ci-upstream-kasan-gce
2018/08/21 17:10 upstream 778a33959a8a 95b5c82b .config console log report ci-upstream-kasan-gce
2018/08/21 12:58 upstream 778a33959a8a 95b5c82b .config console log report ci-upstream-kasan-gce
2018/08/21 07:47 upstream cc26ebbebde8 95b5c82b .config console log report ci-upstream-kasan-gce-root
2018/08/21 05:00 upstream cc26ebbebde8 95b5c82b .config console log report ci-upstream-kasan-gce
2018/08/21 03:12 upstream cc26ebbebde8 95b5c82b .config console log report ci-upstream-kasan-gce
2018/08/21 00:48 upstream cc26ebbebde8 95b5c82b .config console log report ci-upstream-kasan-gce
2018/08/20 23:08 upstream cc26ebbebde8 95b5c82b .config console log report ci-upstream-kasan-gce
2018/08/20 21:18 upstream cc26ebbebde8 95b5c82b .config console log report ci-upstream-kasan-gce
2018/08/20 18:32 upstream 2ad0d5269970 2dc4378f .config console log report ci-upstream-kasan-gce
2018/08/20 17:21 upstream 2ad0d5269970 2dc4378f .config console log report ci-upstream-kasan-gce
2018/08/20 16:11 upstream 2ad0d5269970 2dc4378f .config console log report ci-upstream-kasan-gce
2018/08/20 12:54 upstream 2ad0d5269970 2dc4378f .config console log report ci-upstream-kasan-gce
2018/08/20 10:31 upstream 2ad0d5269970 2dc4378f .config console log report ci-upstream-kasan-gce
2018/08/20 07:29 upstream 2ad0d5269970 2dc4378f .config console log report ci-upstream-kasan-gce
2018/08/20 04:18 upstream 2ad0d5269970 2dc4378f .config console log report ci-upstream-kasan-gce
2018/08/20 02:27 upstream 2ad0d5269970 2dc4378f .config console log report ci-upstream-kasan-gce-root
2018/08/20 00:03 upstream 2ad0d5269970 2dc4378f .config console log report ci-upstream-kasan-gce
2018/08/19 23:02 upstream 2ad0d5269970 2dc4378f .config console log report ci-upstream-kasan-gce-root
2018/08/19 21:55 upstream 08b5fa819970 2dc4378f .config console log report ci-upstream-kasan-gce
2018/08/19 19:17 upstream 08b5fa819970 2dc4378f .config console log report ci-upstream-kasan-gce
2018/08/19 17:35 upstream 08b5fa819970 2dc4378f .config console log report ci-upstream-kasan-gce
2018/08/19 15:40 upstream 08b5fa819970 2dc4378f .config console log report ci-upstream-kasan-gce
2018/08/19 13:43 upstream 08b5fa819970 2dc4378f .config console log report ci-upstream-kasan-gce
2018/08/19 13:10 upstream 08b5fa819970 2dc4378f .config console log report ci-upstream-kasan-gce
2018/08/19 12:06 upstream 08b5fa819970 2dc4378f .config console log report ci-upstream-kasan-gce
2018/08/19 10:57 upstream 08b5fa819970 2dc4378f .config console log report ci-upstream-kasan-gce
2018/08/19 09:44 upstream 08b5fa819970 2dc4378f .config console log report ci-upstream-kasan-gce
2018/08/19 04:08 upstream a18d783fedfe de20bcbb .config console log report ci-upstream-kasan-gce
2018/08/19 02:34 upstream a18d783fedfe de20bcbb .config console log report ci-upstream-kasan-gce
2018/08/19 01:26 upstream a18d783fedfe de20bcbb .config console log report ci-upstream-kasan-gce
2018/08/18 22:06 upstream a18d783fedfe de20bcbb .config console log report ci-upstream-kasan-gce
2018/07/12 11:49 upstream c25c74b7476e 06c33b3a .config console log report ci-upstream-kasan-gce-root
2018/08/22 05:42 upstream 0214f46b3a03 95b5c82b .config console log report ci-upstream-kasan-gce-386
2018/08/21 20:08 upstream 778a33959a8a 95b5c82b .config console log report ci-upstream-kasan-gce-386
2018/08/21 09:10 upstream cc26ebbebde8 95b5c82b .config console log report ci-upstream-kasan-gce-386
2018/08/21 05:39 upstream cc26ebbebde8 95b5c82b .config console log report ci-upstream-kasan-gce-386
2018/08/20 11:34 upstream 2ad0d5269970 2dc4378f .config console log report ci-upstream-kasan-gce-386
2018/08/20 10:18 upstream 2ad0d5269970 2dc4378f .config console log report ci-upstream-kasan-gce-386
2018/08/19 20:45 upstream 08b5fa819970 2dc4378f .config console log report ci-upstream-kasan-gce-386
2018/08/19 05:47 upstream a18d783fedfe de20bcbb .config console log report ci-upstream-kasan-gce-386
* Struck through repros no longer work on HEAD.