syzbot suspects this bug was fixed by commit:
commit cd26d1c4d1bc947b56ae404998ae2276df7b39b7
Author: Hans Verkuil <hverkuil@xxxxxxxxx>
Date: Tue Nov 13 14:06:46 2018 +0000
media: vb2: vb2_mmap: move lock up
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=101a70e2600000
start commit: e12e00e3 Merge tag 'kbuild-fixes-v4.20' of git://git.kerne..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=8f215f21f041a0d7
dashboard link: https://syzkaller.appspot.com/bug?extid=52e5bf0ebfa66092937a
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14c61b0b400000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=109d545d400000
If the result looks correct, please mark the bug fixed by replying with:
#syz fix: media: vb2: vb2_mmap: move lock up
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
