syzbot has bisected this bug to:
commit 664820265d70a759dceca87b6eb200cd2b93cda8
Author: Mike Snitzer <snitzer@xxxxxxxxxx>
Date: Thu Feb 18 20:44:39 2016 +0000
dm: do not return target from dm_get_live_table_for_ioctl()
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13f4eb64600000
start commit: 0011572c Merge branch 'for-5.2-fixes' of git://git.kernel...
git tree: upstream
final crash: https://syzkaller.appspot.com/x/report.txt?x=100ceb64600000
console output: https://syzkaller.appspot.com/x/log.txt?x=17f4eb64600000
kernel config: https://syzkaller.appspot.com/x/.config?x=cb38d33cd06d8d48
dashboard link: https://syzkaller.appspot.com/bug?extid=03e5c8ebd22cc6c3a8cb
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13244221a00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=117b2432a00000
Reported-by: syzbot+03e5c8ebd22cc6c3a8cb@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 664820265d70 ("dm: do not return target from
dm_get_live_table_for_ioctl()")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
