syzbot


INFO: rcu detected stall in chrdev_open (2)
Status: upstream: reported C repro on 2019/12/12 22:35
Reported-by: syzbot+29784f46793e49c37812@syzkaller.appspotmail.com
First crash: 589d, last: 23d

Cause bisection: introduced by (bisect log) [merge commit]:
commit 801fc022147974f4754939202efe607294479bc9
Author: Thierry Reding <treding@nvidia.com>
Date: Fri Nov 18 13:34:46 2016 +0000

  Merge branch 'for-4.10/firmware' into for-4.10/reset

Crash: unregister_netdevice: waiting for DEV to become free (log)
Repro: C syz .config
similar bugs (4):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: rcu detected stall in chrdev_open (2) 1 434d 434d 0/1 auto-closed as invalid on 2020/09/12 23:19
linux-4.19 INFO: rcu detected stall in chrdev_open (3) C 4 15d 123d 0/1 upstream: reported C repro on 2021/03/22 19:09
linux-4.19 INFO: rcu detected stall in chrdev_open 1 568d 568d 0/1 auto-closed as invalid on 2020/05/02 02:53
upstream INFO: rcu detected stall in chrdev_open 4 598d 599d 0/22 closed as invalid on 2019/12/04 14:04

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2021/06/30 10:46 upstream 007b350a5875 08003f64 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2021/05/31 08:06 upstream 8124c8a6b353 08003f64 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2021/04/01 23:19 upstream 6905b1dc3c32 08003f64 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2021/03/01 06:45 upstream fe07bfda2fb9 08003f64 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2021/01/07 14:44 upstream 71c061d24438 08003f64 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/12/07 13:09 upstream 0477e9288185 08003f64 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/11/07 03:49 upstream 659caaf65dc9 08003f64 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/10/07 12:20 upstream c85fb28b6f99 08003f64 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/08/27 05:22 upstream 15bc20c6af4c 08003f64 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/07/27 03:36 upstream 92ed30191993 08003f64 .config log syz C
ci-upstream-kasan-gce-selinux-root 2020/06/18 11:48 upstream 1b5044021070 08003f64 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/04/14 20:17 upstream 8632e9b5645b 08003f64 .config log report syz C
Crashes (14):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2019/12/13 01:10 upstream ae4b064e2a61 08003f64 .config log report syz C
ci-upstream-kasan-gce-root 2019/12/12 15:53 upstream 687dec9b9459 d973f528 .config log report syz C
ci-upstream-kasan-gce-root 2021/04/29 19:00 upstream d2b6f8a17919 77e2b668 .config log report info INFO: rcu detected stall in chrdev_open
ci-upstream-kasan-gce-root 2020/03/15 19:27 upstream d3dca69085e9 749688d2 .config log report
ci-upstream-kasan-gce-selinux-root 2020/03/12 06:05 upstream e3a36eb6dfae e7caca8e .config log report
ci-upstream-kasan-gce-smack-root 2020/02/11 17:01 upstream 0a679e13ea30 4d1ab643 .config log report
ci-upstream-kasan-gce-root 2020/02/05 09:44 upstream 6992ca0dd017 93e5e335 .config log report
ci-upstream-kasan-gce-selinux-root 2020/01/31 08:35 upstream 9f68e3655aae 5ed23f9a .config log report
ci-upstream-kasan-gce-root 2020/01/09 10:24 upstream b07f636fca1c ddc3e859 .config log report
ci-upstream-kasan-gce-smack-root 2020/01/08 12:35 upstream ae6088216ce4 6738e0b3 .config log report
ci-upstream-kasan-gce-root 2019/12/12 13:57 upstream 687dec9b9459 d973f528 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/05/19 11:25 linux-next ac935d227366 6d882fd2 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/05/13 12:24 linux-next ac935d227366 9a6d42fb .config log report
ci-upstream-linux-next-kasan-gce-root 2020/02/06 05:39 linux-next a0c61bf1c773 662cf49a .config log report