syzbot has bisected this issue to:
commit 9c8ad7a2ff0bfe58f019ec0abc1fb965114dde7d
Author: David Howells <dhowells@xxxxxxxxxx>
Date: Thu May 16 11:52:27 2019 +0000
uapi, x86: Fix the syscall numbering of the mount API syscalls [ver #2]
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=113c6b3d180000
start commit: fe46a7dd189e Merge tag 'sound-6.9-rc1' of git://git.kernel..
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=133c6b3d180000
console output: https://syzkaller.appspot.com/x/log.txt?x=153c6b3d180000
kernel config: https://syzkaller.appspot.com/x/.config?x=4d90a36f0cab495a
dashboard link: https://syzkaller.appspot.com/bug?extid=e84662c5f30b8c401437
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=141bc615180000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=148423e3180000
Reported-by: syzbot+e84662c5f30b8c401437@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 9c8ad7a2ff0b ("uapi, x86: Fix the syscall numbering of the mount API syscalls [ver #2]")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
