syzbot


INFO: task can't die in corrupted (2)
Status: upstream: reported C repro on 2020/12/11 10:03
Reported-by: syzbot+61cb1d04bf13f0c631b1@syzkaller.appspotmail.com
First crash: 537d, last: 68d

Cause bisection: failed (bisect log)
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task can't die in corrupted C done 4 571d 598d 17/22 fixed on 2020/11/16 12:12
linux-4.19 INFO: task hung in corrupted syz error 2 156d 165d 0/1 upstream: reported syz repro on 2021/12/14 06:15

Sample crash report:
INFO: task syz-executor219:3624 can't die for more than 143 seconds.
task:syz-executor219 state:R  running task     stack:27456 pid: 3624 ppid:  3622 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5043 [inline]
 __schedule+0xa94/0x4910 kernel/sched/core.c:6352
 </TASK>
INFO: task syz-executor219:3629 can't die for more than 144 seconds.
task:syz-executor219 state:R  running task     stack:27552 pid: 3629 ppid:  3625 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5043 [inline]
 __schedule+0xa94/0x4910 kernel/sched/core.c:6352
 </TASK>
INFO: task syz-executor219:3630 can't die for more than 144 seconds.
task:syz-executor219 state:R  running task     stack:27632 pid: 3630 ppid:  3627 flags:0x00004006
Call Trace:
 <TASK>
 </TASK>
INFO: task syz-executor219:3631 can't die for more than 145 seconds.
task:syz-executor219 state:R  running task     stack:27432 pid: 3631 ppid:  3623 flags:0x00004006
Call Trace:
 <TASK>
 </TASK>
INFO: task syz-executor219:3632 can't die for more than 147 seconds.
task:syz-executor219 state:R  running task     stack:27632 pid: 3632 ppid:  3626 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5043 [inline]
 __schedule+0xa94/0x4910 kernel/sched/core.c:6352
 </TASK>
INFO: task syz-executor219:3633 can't die for more than 147 seconds.
task:syz-executor219 state:R  running task     stack:27552 pid: 3633 ppid:  3628 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/3274:
 #0: ffff88814904b098 (&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-executor219/3624:
3 locks held by syz-executor219/3629:
3 locks held by syz-executor219/3630:
2 locks held by syz-executor219/3631:
1 lock held by syz-executor219/3632:
1 lock held by syz-executor219/3633:

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


Crashes (44):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2022/03/21 10:53 linux-next 91265a6da44d e2d91b1d .config log report syz C INFO: task can't die in corrupted
ci-upstream-linux-next-kasan-gce-root 2022/03/12 18:53 linux-next 91265a6da44d 9e8eaa75 .config log report syz C INFO: task can't die in corrupted
ci-upstream-linux-next-kasan-gce-root 2022/03/07 06:30 linux-next 91265a6da44d 7bdd8b2c .config log report syz C INFO: task can't die in corrupted
ci-upstream-linux-next-kasan-gce-root 2022/03/06 14:31 linux-next 91265a6da44d 7bdd8b2c .config log report syz C INFO: task can't die in corrupted
ci-upstream-linux-next-kasan-gce-root 2022/03/03 00:34 linux-next e6ada6df471f 45a13a73 .config log report syz C INFO: task can't die in corrupted
ci-upstream-linux-next-kasan-gce-root 2022/02/20 18:20 linux-next ef6b35306dd8 3cd800e4 .config log report syz C INFO: task can't die in corrupted
ci-upstream-linux-next-kasan-gce-root 2022/02/10 01:38 linux-next ef6b35306dd8 0b33604d .config log report syz C INFO: task can't die in corrupted
ci-upstream-linux-next-kasan-gce-root 2022/02/07 07:51 linux-next ef6b35306dd8 a7dab638 .config log report syz C INFO: task can't die in corrupted
ci-upstream-linux-next-kasan-gce-root 2021/08/29 22:42 linux-next 5e63226c7228 be2c130d .config log report syz C INFO: task can't die in corrupted
ci-upstream-linux-next-kasan-gce-root 2021/04/03 21:01 linux-next 454c576c3f5e 6a81331a .config log report syz C INFO: task can't die in corrupted
ci-upstream-linux-next-kasan-gce-root 2021/01/31 14:13 linux-next b01f250d83f6 fc9fd31e .config log report syz C INFO: task can't die in corrupted
ci-upstream-linux-next-kasan-gce-root 2021/01/31 02:03 linux-next b01f250d83f6 fc9fd31e .config log report syz C INFO: task can't die in corrupted
ci-upstream-linux-next-kasan-gce-root 2021/01/28 08:54 linux-next bc085f8fc88f eefc07f2 .config log report syz C INFO: task can't die in corrupted
ci-upstream-linux-next-kasan-gce-root 2021/01/16 08:41 linux-next b3a3cbdec55b 65a7a854 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2021/01/16 03:45 linux-next b3a3cbdec55b 65a7a854 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2021/01/15 22:49 linux-next b3a3cbdec55b 65a7a854 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2021/01/11 18:46 linux-next ef8b014ee4a1 2c1f2513 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2021/01/10 09:47 linux-next 1c925d2030af 2c1f2513 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2021/01/07 22:40 linux-next 2d3811a4fb23 c104d4a3 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2021/01/07 18:05 linux-next 2d3811a4fb23 c104d4a3 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2021/01/03 07:15 linux-next d7a03a44a5e9 79264ae3 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2021/01/03 01:51 linux-next d7a03a44a5e9 79264ae3 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2021/01/03 01:41 linux-next d7a03a44a5e9 79264ae3 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2021/01/01 10:53 linux-next d7a03a44a5e9 79264ae3 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2021/01/01 06:19 linux-next d7a03a44a5e9 79264ae3 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/12/28 12:59 linux-next d7a03a44a5e9 2242f77f .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/12/27 08:25 linux-next d7a03a44a5e9 821e0b09 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/12/25 02:17 linux-next d7a03a44a5e9 c2c1d1dd .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/12/24 20:21 linux-next d7a03a44a5e9 c2c1d1dd .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/12/24 14:58 linux-next d7a03a44a5e9 c2c1d1dd .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/12/24 09:02 linux-next d7a03a44a5e9 c2c1d1dd .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/12/24 05:04 linux-next d7a03a44a5e9 c2c1d1dd .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/12/21 14:31 linux-next 4c6ed015c2a5 04201c06 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/12/19 08:27 linux-next 0d52778b8710 04201c06 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/12/19 02:36 linux-next 0d52778b8710 04201c06 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/12/18 21:13 linux-next 0d52778b8710 04201c06 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/12/18 00:32 linux-next 90cc8cf2d1ab 04201c06 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/12/17 05:51 linux-next 26aed0ea32c8 04201c06 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/12/16 02:46 linux-next 9317f948b0b1 97183ed7 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/12/16 02:44 linux-next 9317f948b0b1 97183ed7 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2021/12/09 20:16 linux-next 4eee8d0b64ec b54aa474 .config log report syz INFO: task can't die in corrupted
ci-upstream-linux-next-kasan-gce-root 2020/12/07 07:26 linux-next 0eedceafd3a6 c521566d .config log report syz
ci-upstream-linux-next-kasan-gce-root 2021/10/14 19:27 linux-next 8006b911c90a 7aa5fe41 .config log report info INFO: task can't die in __down_common
ci-upstream-linux-next-kasan-gce-root 2021/07/07 04:25 linux-next d72e63193059 cca78469 .config log report info INFO: task can't die in __down_common