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: 169d, last: 23d

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 (13):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: task hung in lock_sock_nested (2) 1 49d 49d 0/1 upstream: reported on 2021/12/09 17:14
upstream INFO: task hung in lock_sock_nested (2) C done 418 692d 705d 17/22 fixed on 2020/04/15 17:19
upstream INFO: task hung in lock_sock_nested C 2593 709d 1509d 0/22 closed as dup on 2017/12/23 20:15
android-44 INFO: task hung in lock_sock_nested (2) 4 791d 887d 0/2 auto-closed as invalid on 2020/03/27 01:37
upstream INFO: task hung in lock_sock_nested (3) C done 5 481d 482d 17/22 fixed on 2020/11/16 12:12
android-49 INFO: task hung in lock_sock_nested (2) 2 870d 989d 0/3 auto-closed as invalid on 2020/01/08 15:18
linux-4.14 INFO: task hung in lock_sock_nested 1 812d 812d 0/1 auto-closed as invalid on 2020/03/06 15:38
linux-4.14 INFO: task hung in lock_sock_nested (2) 1 549d 549d 0/1 auto-closed as invalid on 2020/11/24 03:07
android-44 INFO: task hung in lock_sock_nested C 82 1429d 1431d 0/2 closed as invalid on 2019/03/08 00:11
upstream INFO: task hung in lock_sock_nested (4) C done 6 375d 422d 21/22 fixed on 2021/03/10 01:48
android-49 INFO: task hung in lock_sock_nested C 101 1069d 1431d 0/3 closed as invalid on 2019/03/08 00:11
android-414 INFO: task hung in lock_sock_nested 65 835d 1020d 0/1 auto-closed as invalid on 2020/02/12 04:11
linux-4.19 INFO: task hung in lock_sock_nested 1 629d 629d 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:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-kasan-gce 2021/11/29 23:37 net-next 09ae03e2fc9d 7eb7e152 .config log report syz C
ci-upstream-net-kasan-gce 2021/10/30 23:14 net-next ae0393500e3b 7eb7e152 .config log report syz C
Crashes (892):
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 2021/08/15 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-root 2021/12/31 19:53 upstream 4f3d93c6eaff e1768e9c .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce 2021/12/26 07:53 upstream e2ae0d4a6b0b 6caa12e4 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce 2021/12/26 03:10 upstream e2ae0d4a6b0b 6caa12e4 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce 2021/12/25 20:08 upstream b927dfc67d05 6caa12e4 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce 2021/12/23 01:09 upstream 3f066e882bf1 6caa12e4 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-kasan-gce 2021/12/12 16:22 upstream a763d5a5abd6 49ca1f59 .config log report info INFO: task hung in lock_sock_nested
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-net-this-kasan-gce 2022/01/01 09:53 net d6d86830705f e1768e9c .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-this-kasan-gce 2021/12/26 15:13 net e6007b85dfa2 e4f103c4 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-this-kasan-gce 2021/12/21 19:55 net ac8c58f5b535 a938f0b8 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-this-kasan-gce 2021/12/19 21:33 net 60ec7fcfe768 44068e19 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-this-kasan-gce 2021/12/15 18:32 net 1d1c950faa81 572bcb40 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-this-kasan-gce 2021/12/15 08:04 net 3dd7d40b4366 f752fb53 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-this-kasan-gce 2021/12/14 14:45 net b0cdc5dbcf2b d018dd31 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-this-kasan-gce 2021/12/12 22:53 net 3748939bce3f 49ca1f59 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-this-kasan-gce 2021/12/12 13:13 net ee60e626d536 49ca1f59 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-bpf-next-kasan-gce 2022/01/04 05:19 bpf-next e63a02348958 7f723fbe .config log report info INFO: task hung in lock_sock_nested
ci-upstream-bpf-next-kasan-gce 2021/12/30 06:59 bpf-next 4b443bc1785f 6cc879d4 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-kasan-gce 2021/12/13 15:20 net-next 9b5bcb193a3b 49ca1f59 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-kasan-gce 2021/12/13 04:46 net-next 8c8b7aa7fb0c 49ca1f59 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-net-kasan-gce 2021/12/12 19:08 net-next 8c8b7aa7fb0c 49ca1f59 .config log report info INFO: task hung in lock_sock_nested
ci-upstream-bpf-next-kasan-gce 2021/12/11 11:41 bpf-next 229fae38d0fc 49ca1f59 .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