syzbot


INFO: rcu detected stall in sys_mount (5)
Status: fixed on 2020/11/16 12:12
Reported-by: syzbot+dc8c077c7091175cbdb1@syzkaller.appspotmail.com
Fix commit: 1d0e850a49a5 afs: Fix cell removal
First crash: 564d, last: 476d

Cause bisection: introduced by (bisect log) [merge commit]:
commit bc119dd954ba172554b4cc49db249c4fb62701e6
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date: Mon Mar 11 16:34:00 2019 +0000

  Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide

Crash: WARNING: proc registration bug in afs_manage_cell (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log) :
commit 1d0e850a49a5b56f8f3cb51e74a11e2fedb96be6
Author: David Howells <dhowells@redhat.com>
Date: Fri Oct 16 12:21:14 2020 +0000

  afs: Fix cell removal

similar bugs (5):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in sys_mount (6) C inconclusive 74 19h34m 114d 0/22 upstream: reported C repro on 2021/09/27 18:50
upstream INFO: rcu detected stall in sys_mount (4) 2 686d 701d 0/22 auto-closed as invalid on 2020/06/02 15:48
upstream INFO: rcu detected stall in sys_mount (3) 6 777d 778d 0/22 closed as invalid on 2019/12/04 14:04
upstream INFO: rcu detected stall in sys_mount 1 1183d 1183d 0/22 closed as invalid on 2018/10/29 13:47
upstream INFO: rcu detected stall in sys_mount (2) 1 1134d 1134d 0/22 closed as dup on 2018/12/12 21:01

Sample crash report:

Crashes (10):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2020/09/30 18:53 upstream 02de58b24d2e 8516f6d3 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/09/27 10:30 upstream a1bffa48745a 5dd8aee8 .config log report syz C
ci-upstream-kasan-gce-root 2020/09/26 18:27 upstream 7c7ec3226f5f 2d5ea0cb .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/09/21 21:13 upstream ba4f184e126b 9e1fa68e .config log report syz C
ci-upstream-kasan-gce-root 2020/09/09 07:16 upstream 612ab8ad6414 abf9ba4f .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/09/27 18:26 linux-next d1d2220c7f39 5dd8aee8 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/09/22 20:52 linux-next e64997027d5f 3e8f6c27 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/09/10 15:18 upstream 7fe10096c150 409809d8 .config log report
ci-upstream-kasan-gce-root 2020/09/09 05:01 upstream 612ab8ad6414 abf9ba4f .config log report
ci-upstream-kasan-gce-root 2020/07/04 22:27 upstream 7cc2a8ea1048 51095195 .config log report