syzbot


INFO: task can't die in __lock_sock
Status: upstream: reported C repro on 2021/08/15 16:47
Reported-by: syzbot+7d51f807c81b190a127d@syzkaller.appspotmail.com
First crash: 65d, last: 16d

Cause bisection: introduced by (bisect log) :
commit b7ce436a5d798bc59e71797952566608a4b4626b
Author: Desmond Cheong Zhi Xi <desmondcheongzx@gmail.com>
Date: Tue Aug 10 04:14:09 2021 +0000

  Bluetooth: switch to lock_sock in RFCOMM

Crash: INFO: task hung in lock_sock_nested (log)
Repro: C syz .config
similar bugs (12):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in lock_sock_nested (2) C done 418 588d 601d 17/22 fixed on 2020/04/15 17:19
upstream INFO: task hung in lock_sock_nested C 2593 605d 1405d 0/22 closed as dup on 2017/12/23 20:15
android-44 INFO: task hung in lock_sock_nested (2) 4 687d 783d 0/2 auto-closed as invalid on 2020/03/27 01:37
upstream INFO: task hung in lock_sock_nested (3) C done 5 376d 378d 17/22 fixed on 2020/11/16 12:12
android-49 INFO: task hung in lock_sock_nested (2) 2 766d 885d 0/3 auto-closed as invalid on 2020/01/08 15:18
linux-4.14 INFO: task hung in lock_sock_nested 1 708d 708d 0/1 auto-closed as invalid on 2020/03/06 15:38
linux-4.14 INFO: task hung in lock_sock_nested (2) 1 445d 445d 0/1 auto-closed as invalid on 2020/11/24 03:07
android-44 INFO: task hung in lock_sock_nested C 82 1325d 1327d 0/2 closed as invalid on 2019/03/08 00:11
upstream INFO: task hung in lock_sock_nested (4) C done 6 271d 317d 21/22 fixed on 2021/03/10 01:48
android-49 INFO: task hung in lock_sock_nested C 101 965d 1327d 0/3 closed as invalid on 2019/03/08 00:11
android-414 INFO: task hung in lock_sock_nested 65 731d 916d 0/1 auto-closed as invalid on 2020/02/12 04:11
linux-4.19 INFO: task hung in lock_sock_nested 1 524d 524d 0/1 auto-closed as invalid on 2020/09/05 19:53
Patch testing requests:
Created Duration User Patch Repo Result
2021/10/04 06:51 18m desmondcheongzx@gmail.com patch git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git master OK
2021/10/04 05:50 18m desmondcheongzx@gmail.com patch git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git master OK
2021/09/20 14:24 12m hdanton@sina.com patch upstream report log

Sample crash report:

Crashes (870):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-kasan-gce 2021/09/01 19:19 net-next 29ce8f970107 7eb7e152 .config log report syz C INFO: task hung in lock_sock_nested
ci-upstream-linux-next-kasan-gce-root 2021/09/01 17:34 linux-next c1b13fe76e95 7eb7e152 .config log report syz C INFO: task hung in lock_sock_nested
ci-upstream-linux-next-kasan-gce-root 2021/09/20 12:32 linux-next 9004fd387338 70b76c1d .config log report info INFO: task can't die in __lock_sock
ci-upstream-linux-next-kasan-gce-root 2021/09/19 10:22 linux-next 9004fd387338 70b76c1d .config log report info INFO: task can't die in __lock_sock
ci-upstream-linux-next-kasan-gce-root 2021/09/19 05:59 linux-next 9004fd387338 70b76c1d .config log report info INFO: task can't die in __lock_sock
ci-upstream-linux-next-kasan-gce-root 2021/09/18 13:39 linux-next 9004fd387338 70b76c1d .config log report info INFO: task can't die in __lock_sock
ci-upstream-linux-next-kasan-gce-root 2021/09/18 05:13 linux-next 9004fd387338 70b76c1d .config log report info INFO: task can't die in __lock_sock
ci-upstream-linux-next-kasan-gce-root 2021/09/18 03:00 linux-next 9004fd387338 70b76c1d .config log report info INFO: task can't die in __lock_sock
ci-upstream-linux-next-kasan-gce-root 2021/08/15 08:24 linux-next 4b358aabb93a 2489ab88 .config log report info INFO: task can't die in __lock_sock
ci-upstream-linux-next-kasan-gce-root 2021/08/11 16:36 linux-next 8ca403f3e7a2 6972b106 .config log report info INFO: task can't die in __lock_sock
ci-upstream-kasan-gce-smack-root 2021/09/23 16:05 upstream 58e2cf5d7946 8cac236e .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-selinux-root 2021/09/23 04:41 upstream cf1d2c3e7e2f 8cac236e .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-smack-root 2021/09/23 03:16 upstream cf1d2c3e7e2f 8cac236e .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-smack-root 2021/09/23 02:03 upstream cf1d2c3e7e2f 8cac236e .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-root 2021/09/22 20:11 upstream cf1d2c3e7e2f 8cac236e .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-selinux-root 2021/09/22 16:14 upstream 92477dd1faa6 169724fe .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-root 2021/09/22 04:28 upstream 92477dd1faa6 169724fe .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-selinux-root 2021/09/21 17:20 upstream d9fb678414c0 169724fe .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-selinux-root 2021/09/21 16:14 upstream d9fb678414c0 169724fe .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-root 2021/09/21 15:05 upstream d9fb678414c0 169724fe .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-smack-root 2021/09/21 14:42 upstream d9fb678414c0 169724fe .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-root 2021/09/21 10:36 upstream d9fb678414c0 af796c18 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-root 2021/09/21 09:06 upstream e4e737bb5c17 af796c18 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-root 2021/09/20 18:21 upstream e4e737bb5c17 af796c18 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-root 2021/09/20 16:12 upstream e4e737bb5c17 af796c18 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-root 2021/09/20 12:35 upstream 20621d2f27a0 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-smack-root 2021/09/20 11:09 upstream 20621d2f27a0 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-root 2021/09/20 02:27 upstream 20621d2f27a0 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-selinux-root 2021/09/19 18:41 upstream d4d016caa4b8 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-smack-root 2021/09/19 16:19 upstream d4d016caa4b8 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-root 2021/09/19 14:04 upstream d4d016caa4b8 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-smack-root 2021/09/19 12:01 upstream d4d016caa4b8 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-root 2021/09/19 07:01 upstream 93ff9f13be91 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-smack-root 2021/09/19 01:13 upstream 93ff9f13be91 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-smack-root 2021/09/18 22:18 upstream 93ff9f13be91 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-smack-root 2021/09/18 13:30 upstream 4357f03d6611 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-root 2021/09/18 11:22 upstream 4357f03d6611 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-root 2021/09/18 09:55 upstream 4357f03d6611 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-smack-root 2021/09/18 07:13 upstream ddf21bd8ab98 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-root 2021/09/18 02:57 upstream ddf21bd8ab98 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-smack-root 2021/09/18 01:55 upstream ddf21bd8ab98 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce-root 2021/09/17 18:43 upstream ddf21bd8ab98 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-this-kasan-gce 2021/09/19 09:47 net 02319bf15acf 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-this-kasan-gce 2021/09/18 19:32 net 02319bf15acf 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-this-kasan-gce 2021/09/18 15:54 net 02319bf15acf 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-kasan-gce 2021/09/29 05:40 net-next b69c99463d41 d82cb927 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-kasan-gce 2021/09/24 01:35 net-next 68a81bb2eebd 8cac236e .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-kasan-gce 2021/09/23 23:46 net-next 68a81bb2eebd 8cac236e .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-kasan-gce 2021/09/23 13:46 net-next 68a81bb2eebd 8cac236e .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-kasan-gce 2021/09/23 06:23 net-next 428168f99517 8cac236e .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-kasan-gce 2021/09/23 03:07 net-next 428168f99517 8cac236e .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-kasan-gce 2021/09/22 18:13 net-next 428168f99517 8cac236e .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-kasan-gce 2021/09/22 09:03 net-next 07b855628c22 169724fe .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-kasan-gce 2021/09/21 13:05 net-next bea714581a31 169724fe .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-kasan-gce 2021/09/21 01:00 net-next 85c698863c15 af796c18 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-kasan-gce 2021/09/19 23:41 net-next 9eb7b5e7cb50 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-kasan-gce 2021/09/18 00:37 net-next 5ef8a0291513 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-kasan-gce 2021/09/17 22:54 net-next 5ef8a0291513 70b76c1d .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-kasan-gce 2021/09/17 15:31 net-next 561bed688bff 5b989942 .config log report info INFO: task hung in lock_sock_nested