On Tue, Mar 12, 2019 at 5:09 PM Dmitry Vyukov <dvyukov@xxxxxxxxxx> wrote: > > On Tue, Mar 12, 2019 at 1:02 PM Oliver Hartkopp <socketcan@xxxxxxxxxxxx> wrote: > > > > Hi all, > > > > I'm not sure why a Kernel 4.12.0-rc2+ is used here, but I do not get any > > problems on the my latest 5.0.0-06622-g1fc1cd8399ab tree and I strongly > > assume this patch showing up in 4.12-rc6 > > > > https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit?id=74b7b490886852582d986a33443c2ffa50970169 > > > > fixes the problem. > > > Hi Oliver, > > You can see how bisection progressed and got to 4.12.0-rc2+ in the > bisection log. > > The commit that it come up with looks unrelated. > I've started collecting such cases at: > https://github.com/google/syzkaller/issues/1051 > and added for this case: > > ===== > Bisected to wrong commit. > Root cause: broken kernel boots, bugs that happen on all tests. > Boot is broken for several releases with "WARNING in hsr_forward_skb", > this switches to a bug that happens during every test "INFO: trying to > register non-static key in can_notifier", which then leads to a > completely random commit. > ===== Broken boots did not happen here. "WARNING in hsr_forward_skb" is the crash that we pursued, so it started correctly. But then diverged to an unrelated "INFO: trying to register non-static key in can_notifier". > > On 3/12/19 9:57 AM, syzbot wrote: > > > syzbot has bisected this bug to: > > > > > > commit ab42f35d9cb5ac49b5a2a11f940e74f58f207280 > > > Author: Ming Lei <ming.lei@xxxxxxxxxx> > > > Date: Fri May 26 11:53:19 2017 +0000 > > > > > > blk-mq: merge bio into sw queue before plugging > > > > > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16e68713200000 > > > start commit: ab42f35d blk-mq: merge bio into sw queue before plugging > > > git tree: upstream > > > final crash: https://syzkaller.appspot.com/x/report.txt?x=15e68713200000 > > > console output: https://syzkaller.appspot.com/x/log.txt?x=11e68713200000 > > > kernel config: https://syzkaller.appspot.com/x/.config?x=5e7dc790609552d7 > > > dashboard link: > > > https://syzkaller.appspot.com/bug?extid=fdce8f2a8903f3ba0e6b > > > userspace arch: amd64 > > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15f6d1fd400000 > > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17290fdd400000 > > > > > > Reported-by: syzbot+fdce8f2a8903f3ba0e6b@xxxxxxxxxxxxxxxxxxxxxxxxx > > > Fixes: ab42f35d ("blk-mq: merge bio into sw queue before plugging") > > > > -- > > You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group. > > To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@xxxxxxxxxxxxxxxx. > > To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/7dd5ffca-803d-9d5e-7fa4-f9eed2249d26%40hartkopp.net. > > For more options, visit https://groups.google.com/d/optout.
