syzbot


KASAN: null-ptr-deref Write in video_usercopy
Status: upstream: reported C repro on 2020/01/08 08:54
Reported-by: syzbot+9240c422be249a8422bd@syzkaller.appspotmail.com
First crash: 621d, last: 620d

Cause bisection: introduced by (bisect log) :
commit c8ef1a6076bfb986052ff8fd8f5eb3b3a3f1048e
Author: Arnd Bergmann <arnd@arndb.de>
Date: Mon Dec 16 14:15:02 2019 +0000

  media: v4l2-core: split out data copy from video_usercopy

Crash: KASAN: null-ptr-deref Write in video_usercopy (log)
Repro: C syz .config
Patch testing requests:
Created Duration User Patch Repo Result
2021/03/15 01:45 15m ducheng2@gmail.com git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next-history.git master OK
2020/10/31 23:03 18m anant.thazhemadam@gmail.com https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master OK

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2020/01/09 00:22 linux-next 4becfd1b26ef ddc3e859 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/01/08 02:23 linux-next 264673852033 6738e0b3 .config log report syz C