BUG: soft lockup in __do_sys_clock_adjtime
Status: upstream: reported C repro on 2020/07/07 01:42
First crash: 472d, last: 76d

Cause bisection: introduced by (bisect log) :
commit 5a781ccbd19e4664babcbe4b4ead7aa2b9283d22
Author: Vinicius Costa Gomes <>
Date: Sat Sep 29 00:59:43 2018 +0000

  tc: Add support for configuring the taprio scheduler

Crash: INFO: rcu detected stall in smp_call_function (log)
Repro: C syz .config

Fix bisection: the fix commit could be any of (bisect log):
  7cc2a8ea1048 Merge tag 'block-5.8-2020-07-01' of git://
  9e9fb7655ed5 Merge tag 'net-next-5.15' of git://

Sample crash report:

Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2020/07/07 01:42 upstream 7cc2a8ea1048 51095195 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/07/02 03:53 upstream cd77006e01b3 bed10395 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/03 19:57 linux-next aab2003999e7 bed10395 .config log report