syzbot


KASAN: out-of-bounds Read in pebs_update_state
Status: fixed on 2020/09/16 22:51
Reported-by: syzbot+45862e7027be5d590577@syzkaller.appspotmail.com
Fix commit: 033724d68642 fbdev: Detect integer underflow at "struct fbcon_ops"->clear_margins.
First crash: 567d, last: 515d

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

Fix bisection: fixed by (bisect log) :
commit 033724d6864245a11f8e04c066002e6ad22b3fd0
Author: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Date: Wed Jul 15 01:51:02 2020 +0000

  fbdev: Detect integer underflow at "struct fbcon_ops"->clear_margins.


Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2020/05/11 02:59 upstream e99332e7b4cd 8742a2b9 .config log report syz