syzbot


kernel BUG at fs/pipe.c:LINE!
Status: fixed on 2020/01/08 01:06
Reported-by: syzbot+d37abaade33a934f16f2@syzkaller.appspotmail.com
Fix commit: 8c7b8c34ae95 pipe: Remove assertion from pipe_poll()
First crash: 738d, last: 731d

Cause bisection: introduced by (bisect log) :
commit 8cefc107ca54c8b06438b7dc9cc08bc0a11d5b98
Author: David Howells <dhowells@redhat.com>
Date: Fri Nov 15 13:30:32 2019 +0000

  pipe: Use head and tail pointers for the ring, not cursor and length

Crash: kernel BUG at fs/pipe.c:LINE! (log)
Repro: C syz .config

Sample crash report:

Crashes (693):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2019/12/02 15:59 upstream ceb307474506 f879db37 .config log report syz C
ci-upstream-kasan-gce-root 2019/12/02 03:43 upstream b94ae8ad9fe7 f879db37 .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/12/01 18:24 upstream b94ae8ad9fe7 a76bf83f .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/12/01 17:12 upstream b94ae8ad9fe7 a76bf83f .config log report syz C
ci-upstream-kasan-gce-root 2019/12/01 16:45 upstream b94ae8ad9fe7 a76bf83f .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/12/02 14:10 upstream ceb307474506 f879db37 .config log report syz
ci-upstream-kasan-gce-root 2019/12/06 01:49 upstream 2f13437b8917 4fb74474 .config log report
ci-upstream-kasan-gce-selinux-root 2019/12/05 21:44 upstream 2f13437b8917 4fb74474 .config log report
ci-upstream-kasan-gce-selinux-root 2019/12/05 19:38 upstream 2f13437b8917 4fb74474 .config log report
ci-upstream-kasan-gce 2019/12/05 18:17 upstream 2f13437b8917 4fb74474 .config log report
ci-upstream-kasan-gce-selinux-root 2019/12/05 16:06 upstream 2f13437b8917 4fb74474 .config log report
ci-upstream-kasan-gce-selinux-root 2019/12/05 14:37 upstream 2f13437b8917 4fb74474 .config log report
ci-upstream-kasan-gce 2019/12/05 13:29 upstream aedc0650f913 b2088328 .config log report
ci-upstream-kasan-gce-selinux-root 2019/12/05 07:18 upstream aedc0650f913 b2088328 .config log report
ci-upstream-kasan-gce-selinux-root 2019/12/05 05:47 upstream 63de37476ebd b2088328 .config log report
ci-upstream-kasan-gce-selinux-root 2019/12/05 05:20 upstream 63de37476ebd b2088328 .config log report
ci-upstream-kasan-gce-selinux-root 2019/12/05 04:04 upstream 63de37476ebd b2088328 .config log report
ci-upstream-kasan-gce-root 2019/12/05 00:31 upstream 63de37476ebd b2088328 .config log report
ci-upstream-kasan-gce-selinux-root 2019/12/04 23:59 upstream 63de37476ebd b2088328 .config log report
ci-qemu-upstream 2019/12/04 22:55 upstream aedc0650f913 b2088328 .config log report
ci-upstream-kasan-gce-selinux-root 2019/12/04 21:06 upstream 63de37476ebd b2088328 .config log report
ci-upstream-kasan-gce-root 2019/12/04 19:11 upstream 63de37476ebd b2088328 .config log report
ci-upstream-kasan-gce-selinux-root 2019/12/04 18:58 upstream 63de37476ebd b2088328 .config log report
ci-upstream-kasan-gce-selinux-root 2019/12/04 17:26 upstream 63de37476ebd b2088328 .config log report
ci-upstream-kasan-gce-smack-root 2019/12/02 18:05 upstream ceb307474506 f879db37 .config log report
ci-upstream-kasan-gce-selinux-root 2019/12/01 13:52 upstream b94ae8ad9fe7 a76bf83f .config log report
ci-upstream-net-this-kasan-gce 2019/12/08 22:11 net 0fc75219fe9a 1508f453 .config log report
ci-upstream-bpf-kasan-gce 2019/12/06 19:01 bpf ae72555b4104 85f26751 .config log report
ci-upstream-bpf-kasan-gce 2019/12/06 16:57 bpf ae72555b4104 85f26751 .config log report
ci-upstream-bpf-kasan-gce 2019/12/05 10:43 bpf ef8c84effce3 b2088328 .config log report
ci-upstream-net-kasan-gce 2019/12/03 18:06 net-next 596cf45cbf6e ae13a849 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/07 10:02 linux-next 838333c80c4f 85f26751 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/07 09:01 linux-next 838333c80c4f 85f26751 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/07 07:02 linux-next 838333c80c4f 85f26751 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/07 06:01 linux-next 838333c80c4f 85f26751 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/07 02:39 linux-next 838333c80c4f 85f26751 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/07 02:35 linux-next 838333c80c4f 85f26751 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/07 01:23 linux-next 838333c80c4f 85f26751 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/06 23:24 linux-next 838333c80c4f 85f26751 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/06 21:09 linux-next 838333c80c4f 85f26751 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/06 19:17 linux-next 838333c80c4f 85f26751 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/06 17:58 linux-next 838333c80c4f 85f26751 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/06 15:51 linux-next 838333c80c4f 98b4ef2d .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/06 14:36 linux-next 838333c80c4f 98b4ef2d .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/06 13:07 linux-next 838333c80c4f 98b4ef2d .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/06 12:18 linux-next 838333c80c4f 98b4ef2d .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/06 10:10 linux-next 838333c80c4f 98b4ef2d .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/06 08:34 linux-next 838333c80c4f 98b4ef2d .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/06 05:32 linux-next 282ffdf30a3e 98b4ef2d .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/06 04:14 linux-next 282ffdf30a3e 98b4ef2d .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/05 22:51 linux-next 282ffdf30a3e 4fb74474 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/05 20:42 linux-next 282ffdf30a3e 4fb74474 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/05 15:46 linux-next 282ffdf30a3e 4fb74474 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/05 12:20 linux-next 282ffdf30a3e b2088328 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/05 09:25 linux-next 282ffdf30a3e b2088328 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/05 08:18 linux-next 282ffdf30a3e b2088328 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/05 03:43 linux-next c7c32c43e831 b2088328 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/05 02:38 linux-next c7c32c43e831 b2088328 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/05 01:32 linux-next c7c32c43e831 b2088328 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/04 17:33 linux-next c7c32c43e831 b2088328 .config log report