On Fri, Nov 22, 2019 at 04:05:01AM -0800, syzbot wrote: > syzbot has bisected this bug to: > > commit a32e236eb93e62a0f692e79b7c3c9636689559b9 > Author: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> > Date: Fri Aug 3 19:22:09 2018 +0000 > > Partially revert "block: fail op_is_write() requests to read-only > partitions" > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=119503d2e00000 > start commit: 60f5a217 Merge tag 'usercopy-fix-v4.18-rc8' of git://git.k.. > git tree: upstream > final crash: https://syzkaller.appspot.com/x/report.txt?x=139503d2e00000 > console output: https://syzkaller.appspot.com/x/log.txt?x=159503d2e00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=2dc0cd7c2eefb46f > dashboard link: https://syzkaller.appspot.com/bug?extid=21cfe1f803e0e158acf1 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17b87bfc400000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=117ccc8c400000 > > Reported-by: syzbot+21cfe1f803e0e158acf1@xxxxxxxxxxxxxxxxxxxxxxxxx > Fixes: a32e236eb93e ("Partially revert "block: fail op_is_write() requests > to read-only partitions"") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 8b2ded1c94c06f841f8c1612bcfa33c85012a36b See https://lore.kernel.org/lkml/20191125174037.GA768@xxxxxxxxxxxxx/ -- Kees Cook