syzbot


INFO: task can't die in corrupted (2)

Status: upstream: reported C repro on 2020/12/11 10:03
Labels: kernel (incorrect?)
Reported-by: syzbot+61cb1d04bf13f0c631b1@syzkaller.appspotmail.com
First crash: 912d, last: 443d

Cause bisection: failed (error log, bisect log)
Discussions (1)
Title Replies (including bot) Last reply
INFO: task can't die in corrupted (2) 0 (2) 2020/12/16 02:45
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task can't die in corrupted fs C done 4 946d 973d 17/24 fixed on 2020/11/16 12:12
linux-4.19 INFO: task hung in corrupted syz error 2 531d 540d 0/1 upstream: reported syz repro on 2021/12/14 06:15
Last patch testing requests (10)
Created Duration User Patch Repo Result
2023/04/18 07:40 18m retest repro linux-next OK log
2023/04/18 06:40 19m retest repro linux-next OK log
2023/04/18 05:40 21m retest repro linux-next OK log
2023/04/18 02:40 21m retest repro linux-next OK log
2023/04/18 00:40 20m retest repro linux-next OK log
2023/04/17 23:40 30m retest repro linux-next OK log
2023/04/17 21:40 20m retest repro linux-next OK log
2023/04/17 20:40 21m retest repro linux-next OK log
2023/04/17 19:40 20m retest repro linux-next OK log
2023/04/17 18:40 27m retest repro linux-next OK log

Sample crash report:
INFO: task syz-executor310:3631 can't die for more than 143 seconds.
task:syz-executor310 state:R  running task     stack:27456 pid: 3631 ppid:  3630 flags:0x00004006
Call Trace:
 <TASK>
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/28:
 #0: ffffffff8bd858e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6498
2 locks held by getty/3280:
 #0: ffff888148f63098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
 #1: ffffc90002e532e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2075
1 lock held by syz-executor310/3631:

=============================================

Kernel panic - not syncing: hung_task: blocked tasks
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.17.0-rc6-next-20220303-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 panic+0x2d7/0x636 kernel/panic.c:274
 check_hung_uninterruptible_tasks kernel/hung_task.c:260 [inline]
 watchdog.cold+0x1ca/0x1de kernel/hung_task.c:413
 kthread+0x2e9/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (44):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
2022/03/07 06:30 linux-next 91265a6da44d 7bdd8b2c .config console log report syz C ci-upstream-linux-next-kasan-gce-root INFO: task can't die in corrupted
2022/03/06 14:31 linux-next 91265a6da44d 7bdd8b2c .config console log report syz C ci-upstream-linux-next-kasan-gce-root INFO: task can't die in corrupted
2022/02/10 01:38 linux-next ef6b35306dd8 0b33604d .config console log report syz C ci-upstream-linux-next-kasan-gce-root INFO: task can't die in corrupted
2022/02/07 07:51 linux-next ef6b35306dd8 a7dab638 .config console log report syz C ci-upstream-linux-next-kasan-gce-root INFO: task can't die in corrupted
2021/08/29 22:42 linux-next 5e63226c7228 be2c130d .config console log report syz C ci-upstream-linux-next-kasan-gce-root INFO: task can't die in corrupted
2022/03/21 10:53 linux-next 91265a6da44d e2d91b1d .config console log report syz C ci-upstream-linux-next-kasan-gce-root INFO: task can't die in corrupted
2022/03/12 18:53 linux-next 91265a6da44d 9e8eaa75 .config console log report syz C ci-upstream-linux-next-kasan-gce-root INFO: task can't die in corrupted
2022/03/03 00:34 linux-next e6ada6df471f 45a13a73 .config console log report syz C ci-upstream-linux-next-kasan-gce-root INFO: task can't die in corrupted
2022/02/20 18:20 linux-next ef6b35306dd8 3cd800e4 .config console log report syz C ci-upstream-linux-next-kasan-gce-root INFO: task can't die in corrupted
2021/04/03 21:01 linux-next 454c576c3f5e 6a81331a .config console log report syz C ci-upstream-linux-next-kasan-gce-root INFO: task can't die in corrupted
2021/01/31 14:13 linux-next b01f250d83f6 fc9fd31e .config console log report syz C ci-upstream-linux-next-kasan-gce-root INFO: task can't die in corrupted
2021/01/31 02:03 linux-next b01f250d83f6 fc9fd31e .config console log report syz C ci-upstream-linux-next-kasan-gce-root INFO: task can't die in corrupted
2021/01/28 08:54 linux-next bc085f8fc88f eefc07f2 .config console log report syz C ci-upstream-linux-next-kasan-gce-root INFO: task can't die in corrupted
2021/01/16 08:41 linux-next b3a3cbdec55b 65a7a854 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2021/01/16 03:45 linux-next b3a3cbdec55b 65a7a854 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2021/01/15 22:49 linux-next b3a3cbdec55b 65a7a854 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2021/01/11 18:46 linux-next ef8b014ee4a1 2c1f2513 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2021/01/10 09:47 linux-next 1c925d2030af 2c1f2513 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2021/01/07 22:40 linux-next 2d3811a4fb23 c104d4a3 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2021/01/07 18:05 linux-next 2d3811a4fb23 c104d4a3 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2021/01/03 07:15 linux-next d7a03a44a5e9 79264ae3 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2021/01/03 01:51 linux-next d7a03a44a5e9 79264ae3 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2021/01/03 01:41 linux-next d7a03a44a5e9 79264ae3 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2021/01/01 10:53 linux-next d7a03a44a5e9 79264ae3 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2021/01/01 06:19 linux-next d7a03a44a5e9 79264ae3 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/12/28 12:59 linux-next d7a03a44a5e9 2242f77f .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/12/27 08:25 linux-next d7a03a44a5e9 821e0b09 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/12/25 02:17 linux-next d7a03a44a5e9 c2c1d1dd .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/12/24 20:21 linux-next d7a03a44a5e9 c2c1d1dd .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/12/24 14:58 linux-next d7a03a44a5e9 c2c1d1dd .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/12/24 09:02 linux-next d7a03a44a5e9 c2c1d1dd .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/12/24 05:04 linux-next d7a03a44a5e9 c2c1d1dd .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/12/21 14:31 linux-next 4c6ed015c2a5 04201c06 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/12/19 08:27 linux-next 0d52778b8710 04201c06 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/12/19 02:36 linux-next 0d52778b8710 04201c06 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/12/18 21:13 linux-next 0d52778b8710 04201c06 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/12/18 00:32 linux-next 90cc8cf2d1ab 04201c06 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/12/17 05:51 linux-next 26aed0ea32c8 04201c06 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/12/16 02:46 linux-next 9317f948b0b1 97183ed7 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/12/16 02:44 linux-next 9317f948b0b1 97183ed7 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2021/12/09 20:16 linux-next 4eee8d0b64ec b54aa474 .config console log report syz ci-upstream-linux-next-kasan-gce-root INFO: task can't die in corrupted
2020/12/07 07:26 linux-next 0eedceafd3a6 c521566d .config console log report syz ci-upstream-linux-next-kasan-gce-root
2021/10/14 19:27 linux-next 8006b911c90a 7aa5fe41 .config console log report info ci-upstream-linux-next-kasan-gce-root INFO: task can't die in __down_common
2021/07/07 04:25 linux-next d72e63193059 cca78469 .config console log report info ci-upstream-linux-next-kasan-gce-root INFO: task can't die in __down_common
* Struck through repros no longer work on HEAD.