syzbot


possible deadlock in uart_write
Status: upstream: reported C repro on 2019/12/26 21:25
Reported-by: syzbot+b0e376d3731cd5e82bb7@syzkaller.appspotmail.com
First crash: 486d, last: 1d10h

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: WARNING in sysfs_warn_dup (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log) [no-op commit]:
commit c6f7c753f71cccb21d1a7f0c1127ce7804374c5e
Author: Christoph Hellwig <hch@lst.de>
Date: Thu Sep 3 14:22:37 2020 +0000

  lkdtm: remove set_fs-based tests

similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 possible deadlock in uart_write C 245 8h19m 444d 0/1 upstream: reported C repro on 2020/02/04 05:05
linux-4.14 possible deadlock in uart_write C 224 2h16m 452d 0/1 upstream: reported C repro on 2020/01/26 11:10

Sample crash report:

Crashes (378):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2020/03/07 06:48 upstream fb279f4e fd2a5f28 .config log report syz C
ci-upstream-kasan-gce-root 2020/03/05 07:37 upstream 63623fd4 c88c7b75 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/03/03 03:31 upstream 63623fd4 c88c7b75 .config log report syz C
ci-upstream-kasan-gce 2020/03/01 01:44 upstream f8788d86 59b57593 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/03/18 11:14 linux-next 770fbb32 97bc55ce .config log report syz C
ci-upstream-kasan-gce-386 2020/03/01 06:37 upstream 63623fd4 c88c7b75 .config log report syz
ci-upstream-kasan-gce 2021/04/22 00:55 upstream 16fc44d6 2bc8999a .config log report info possible deadlock in uart_write
ci-upstream-kasan-gce-smack-root 2021/04/17 09:47 upstream 9cdbf646 7e2b734b .config log report info possible deadlock in uart_write
ci-upstream-kasan-gce 2021/04/16 13:33 upstream 7e25f40e 7e2b734b .config log report info possible deadlock in uart_write
ci-upstream-kasan-gce-selinux-root 2021/04/06 01:19 upstream 0a50438c 6a81331a .config log report info possible deadlock in uart_write
ci-upstream-kasan-gce-root 2021/03/30 22:17 upstream 2bb25b3a 6a81331a .config log report info possible deadlock in uart_write
ci-upstream-kasan-gce 2021/02/08 11:59 upstream 92bf2261 2ce644fc .config log report info possible deadlock in uart_write
ci-upstream-kasan-gce 2021/02/04 17:33 upstream 61556703 42b90a7c .config log report info possible deadlock in uart_write
ci-upstream-kasan-gce-386 2021/03/31 14:09 upstream 5e46d1b7 6a81331a .config log report info possible deadlock in uart_write
ci-upstream-kasan-gce-386 2021/03/26 17:02 upstream db24726b a8529b82 .config log report info possible deadlock in uart_write
ci-upstream-kasan-gce-386 2021/02/27 17:35 upstream 3fb6d0e0 4c37c133 .config log report info possible deadlock in uart_write
ci-upstream-linux-next-kasan-gce-root 2021/04/20 13:43 linux-next 1216f02e c0ced557 .config log report info possible deadlock in uart_write
ci-upstream-kasan-gce 2020/10/11 04:19 upstream da690031 4a77ae0b .config log report info
ci-upstream-kasan-gce 2020/10/08 07:52 upstream c85fb28b 1880b4a9 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/10/05 04:01 upstream 549738f1 5ef9c291 .config log report info
ci-upstream-kasan-gce 2020/10/02 22:14 upstream 472e5b05 4969d6ca .config log report info
ci-upstream-kasan-gce 2020/09/30 23:15 upstream 02de58b2 8516f6d3 .config log report info
ci-upstream-kasan-gce 2020/09/30 22:38 upstream 02de58b2 8516f6d3 .config log report info
ci-upstream-kasan-gce 2020/09/30 07:55 upstream ccc1d052 5abc3f1a .config log report info
ci-upstream-kasan-gce 2020/09/30 02:44 upstream ccc1d052 5abc3f1a .config log report info
ci-upstream-kasan-gce 2020/09/29 21:21 upstream ccc1d052 5abc3f1a .config log report info
ci-upstream-kasan-gce-smack-root 2020/09/27 01:38 upstream eeddbe68 2d5ea0cb .config log report info
ci-upstream-kasan-gce-root 2020/09/26 07:39 upstream 7c7ec322 4a006f63 .config log report info
ci-upstream-kasan-gce 2020/09/24 05:31 upstream c9c9e6a4 54289b08 .config log report info
ci-upstream-kasan-gce 2020/09/21 22:38 upstream ba4f184e 9e1fa68e .config log report info
ci-upstream-kasan-gce 2020/09/21 07:55 upstream ba4f184e 9564d2e9 .config log report info
ci-upstream-kasan-gce 2020/09/19 12:13 upstream eb5f95f1 53ce8104 .config log report info
ci-upstream-kasan-gce 2020/09/19 09:42 upstream eb5f95f1 53ce8104 .config log report info
ci-upstream-kasan-gce 2020/09/19 06:14 upstream 92ab97ad 53ce8104 .config log report info
ci-upstream-kasan-gce 2020/09/18 21:34 upstream 92ab97ad 53ce8104 .config log report info
ci-upstream-kasan-gce-smack-root 2020/09/18 06:51 upstream 10b82d51 38962c8b .config log report info
ci-upstream-kasan-gce 2020/09/17 09:04 upstream 5925fa68 8247808b .config log report info
ci-upstream-kasan-gce-smack-root 2020/09/16 10:06 upstream fc4f28bb 18d7d030 .config log report info
ci-upstream-kasan-gce-smack-root 2020/09/15 12:14 upstream fc4f28bb 6989d6f6 .config log report info
ci-upstream-kasan-gce 2020/09/13 05:37 upstream ef2e9a56 ce441f06 .config log report
ci-upstream-kasan-gce-root 2020/09/13 03:52 upstream 729e3d09 ce441f06 .config log report
ci-upstream-kasan-gce 2020/09/12 19:49 upstream 729e3d09 ce441f06 .config log report
ci-upstream-kasan-gce 2020/09/12 16:14 upstream 729e3d09 ce441f06 .config log report
ci-upstream-kasan-gce-smack-root 2020/09/12 14:40 upstream 729e3d09 ce441f06 .config log report
ci-upstream-kasan-gce 2020/09/12 06:35 upstream e8878ab8 79fb24e2 .config log report
ci-upstream-kasan-gce 2020/09/11 21:29 upstream e8878ab8 79fb24e2 .config log report
ci-upstream-kasan-gce-smack-root 2020/09/11 05:03 upstream 7fe10096 409809d8 .config log report
ci-upstream-kasan-gce 2020/09/10 08:14 upstream 34d4ddd3 409809d8 .config log report
ci-upstream-kasan-gce 2020/09/10 00:28 upstream 34d4ddd3 409809d8 .config log report
ci-upstream-kasan-gce 2020/09/09 11:18 upstream 34d4ddd3 0ea7a887 .config log report
ci-upstream-kasan-gce 2020/09/08 20:49 upstream 612ab8ad abf9ba4f .config log report
ci-upstream-kasan-gce-selinux-root 2020/09/08 17:21 upstream f4d51dff abf9ba4f .config log report
ci-upstream-kasan-gce-386 2020/10/05 02:16 upstream 549738f1 5ef9c291 .config log report info
ci-upstream-kasan-gce-386 2020/10/01 06:16 upstream 60e72093 a9767fb2 .config log report info
ci-upstream-kasan-gce-386 2020/09/28 04:23 upstream 16bc1d54 5dd8aee8 .config log report info
ci-upstream-kasan-gce-386 2020/09/22 07:39 upstream 98477740 9e1fa68e .config log report info
ci-upstream-kasan-gce-386 2020/09/19 14:24 upstream eb5f95f1 53ce8104 .config log report info
ci-upstream-kasan-gce-386 2020/09/17 01:27 upstream 5925fa68 8247808b .config log report info
ci-upstream-kasan-gce-386 2020/09/16 08:29 upstream fc4f28bb 18d7d030 .config log report info
ci-upstream-kasan-gce-386 2020/09/11 10:25 upstream 581cb3a2 adfb8b4e .config log report
ci-upstream-kasan-gce-386 2019/12/24 05:06 upstream 46cf053e be5c2c81 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/09/07 08:41 linux-next 7a695657 abf9ba4f .config log report