syzbot has bisected this bug to:
commit 0a957467c5fd46142bc9c52758ffc552d4c5e2f7
Author: Guenter Roeck <linux@xxxxxxxxxxxx>
Date: Wed Aug 15 20:22:27 2018 +0000
x86: i8259: Add missing include file
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1579e751e00000
start commit: 46cf053e Linux 5.5-rc3
git tree: upstream
final crash: https://syzkaller.appspot.com/x/report.txt?x=1779e751e00000
console output: https://syzkaller.appspot.com/x/log.txt?x=1379e751e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=ed9d672709340e35
dashboard link: https://syzkaller.appspot.com/bug?extid=19616eedf6fd8e241e50
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14a47ab9e00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=170f2485e00000
Reported-by: syzbot+19616eedf6fd8e241e50@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 0a957467c5fd ("x86: i8259: Add missing include file")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
