syzbot


KASAN: use-after-free Read in create_worker_cb
Status: upstream: reported C repro on 2021/03/29 19:54
Reported-by: syzbot+099593561bbd1805b839@syzkaller.appspotmail.com
First crash: 27d, last: 24d

Cause bisection: introduced by (bisect log) :
commit 4d004099a668c41522242aa146a38cc4eb59cb1e
Author: Peter Zijlstra <peterz@infradead.org>
Date: Fri Oct 2 09:04:21 2020 +0000

  lockdep: Fix lockdep recursion

Crash: BUG: using __this_cpu_read() in preemptible code in trace_hardirqs_on (log)
Repro: C syz .config
Patch testing requests:
Created Duration User Patch Repo Result
2021/03/29 19:56 19m axboe@kernel.dk git://git.kernel.dk/linux-block for-5.13/io_uring OK

Sample crash report:

Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2021/03/27 13:35 linux-next 93129492 a8529b82 .config log report syz C KASAN: use-after-free Read in create_worker_cb
ci-upstream-linux-next-kasan-gce-root 2021/03/30 13:49 linux-next 93129492 6a81331a .config log report info KASAN: use-after-free Read in create_worker_cb
ci-upstream-linux-next-kasan-gce-root 2021/03/27 13:02 linux-next 93129492 a8529b82 .config log report info KASAN: use-after-free Read in create_worker_cb