syzbot has bisected this bug to:

commit 6b27e27729270a2478fdebea2db9c4f57bb4e8e6 Author: Colin Ian King colin.king@canonical.com Date: Wed Oct 31 19:31:43 2018 +0000

ASoC: stm32: sai: fix less than zero comparison on unsigned int

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10c0298b200000 start commit: aa0c38cf Merge branch 'fixes' of git://git.kernel.org/pub/.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=12c0298b200000 console output: https://syzkaller.appspot.com/x/log.txt?x=14c0298b200000 kernel config: https://syzkaller.appspot.com/x/.config?x=ee434566c893c7b1 dashboard link: https://syzkaller.appspot.com/bug?extid=c4c4b2bb358bb936ad7e syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1197cb88c00000

Reported-by: syzbot+c4c4b2bb358bb936ad7e@syzkaller.appspotmail.com Fixes: 6b27e2772927 ("ASoC: stm32: sai: fix less than zero comparison on unsigned int")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection