syzbot


BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
Status: fixed on 2020/12/09 20:00
Reported-by: syzbot+91fd909b6e62ebe06131@syzkaller.appspotmail.com
Fix commit: 1a33e10e net: partially revert dynamic lockdep key changes
First crash: 731d, last: 291d

Cause bisection: introduced by (bisect log) :
commit 726e41097920a73e4c7c33385dcc0debb1281e18
Author: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Tue Jul 10 00:29:10 2018 +0000

  drivers: core: Remove glue dirs from sysfs earlier

Crash: WARNING in kernfs_get (log)
Repro: C syz .config

Fix bisection: failed (bisect log)
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! (2) 8 6d16h 7d19h 0/21 upstream: reported on 2021/02/27 06:02

Sample crash report:

Crashes (25236):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2020/03/29 14:07 upstream 906c4043 05736b29 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/03/29 09:32 upstream 906c4043 05736b29 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/03/29 07:41 upstream 906c4043 05736b29 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/03/28 22:16 upstream 69c5eea3 f1ebdfba .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/03/27 11:36 upstream f3e69428 7d95711b .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/03/26 12:13 upstream 1b649e0b e8e6c7d2 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/03/26 01:48 upstream e2cf67f6 41f049cc .config log report syz C
ci-upstream-kasan-gce-root 2020/03/23 11:57 upstream 67d584e3 78267cec .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/03/20 13:35 upstream cd607737 2c31c529 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/03/20 09:27 upstream cd607737 2c31c529 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/03/19 17:52 upstream 5076190d 2c31c529 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/03/18 13:33 upstream ac309e77 97bc55ce .config log report syz C
ci-upstream-kasan-gce-root 2020/03/18 12:44 upstream ac309e77 97bc55ce .config log report syz C
ci-upstream-kasan-gce-root 2020/03/17 11:18 upstream fb33c651 749688d2 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/03/17 09:28 upstream fb33c651 749688d2 .config log report syz C
ci-upstream-kasan-gce-root 2020/03/17 06:19 upstream fb33c651 749688d2 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/03/16 23:17 upstream fb33c651 749688d2 .config log report syz C
ci-upstream-kasan-gce-root 2020/03/16 07:30 upstream a42a7bb6 749688d2 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/03/16 07:00 upstream a42a7bb6 749688d2 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/03/15 21:57 upstream d3dca690 749688d2 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/03/13 16:19 upstream 3cc6e2c5 d850e9d0 .config log report syz C
ci-upstream-kasan-gce-root 2020/03/13 09:26 upstream 3cc6e2c5 d850e9d0 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/03/13 09:19 upstream 3cc6e2c5 d850e9d0 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/03/12 18:55 upstream e6e6ec48 d850e9d0 .config log report syz C
ci-upstream-kasan-gce-root 2020/03/10 17:19 upstream 30bb5572 35f53e45 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/03/10 07:30 upstream 30bb5572 35f53e45 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/03/09 12:35 upstream 2c523b34 2e9971bb .config log report syz C
ci-upstream-kasan-gce-root 2020/03/07 18:08 upstream 63849c8f 2e9971bb .config log report syz C
ci-upstream-kasan-gce 2019/04/11 01:42 upstream 771acc7e e955ac50 .config log report syz C
ci-upstream-bpf-kasan-gce 2020/03/31 00:26 bpf a0ba26f3 c8d1cc20 .config log report syz C
ci-upstream-net-this-kasan-gce 2020/03/18 05:25 net 32ca98fe 97bc55ce .config log report syz C
ci-upstream-net-this-kasan-gce 2020/03/14 20:16 net 94b18a87 749688d2 .config log report syz C
ci-upstream-net-this-kasan-gce 2020/03/12 14:18 net e1f550dc d850e9d0 .config log report syz C
ci-upstream-net-this-kasan-gce 2020/03/10 09:31 net 661388f9 35f53e45 .config log report syz C
ci-upstream-net-this-kasan-gce 2020/03/08 20:50 net aeaa925b 2e9971bb .config log report syz C
ci-upstream-net-this-kasan-gce 2020/03/08 10:06 net aeaa925b 2e9971bb .config log report syz C
ci-upstream-net-kasan-gce 2020/03/31 01:11 net-next 41b14502 c8d1cc20 .config log report syz C
ci-upstream-net-kasan-gce 2020/03/17 10:58 net-next 86e85bf6 749688d2 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/03/27 04:17 upstream 9420e8ad 6d25c5a0 .config log report syz
ci-upstream-kasan-gce-root 2020/03/24 11:55 upstream 979e52ca 33e14df3 .config log report syz
ci-upstream-net-this-kasan-gce 2020/03/12 04:17 net 2165fdf4 e7caca8e .config log report syz
ci-upstream-kasan-gce 2020/04/20 17:54 upstream ae83d0b4 347a5dc3 .config log report
ci-upstream-kasan-gce-root 2020/03/30 18:41 upstream 7111951b c8d1cc20 .config log report
ci-upstream-kasan-gce-selinux-root 2020/03/30 18:41 upstream 7111951b c8d1cc20 .config log report
ci-upstream-kasan-gce-smack-root 2020/03/30 14:53 upstream 7111951b c8d1cc20 .config log report
ci-upstream-kasan-gce 2020/03/27 11:28 upstream f3e69428 7d95711b .config log report
ci-upstream-kasan-gce-386 2020/03/29 10:33 upstream 906c4043 05736b29 .config log report
ci-qemu-upstream-386 2020/01/12 20:48 upstream 040a3c33 53faa9fe .config log report
ci-upstream-bpf-kasan-gce 2020/05/19 21:24 bpf f85c1598 6d882fd2 .config log report
ci-upstream-bpf-kasan-gce 2020/04/01 18:40 bpf a0ba26f3 a34e2c33 .config log report
ci-upstream-bpf-kasan-gce 2020/04/01 16:08 bpf a0ba26f3 a34e2c33 .config log report
ci-upstream-bpf-kasan-gce 2020/04/01 15:56 bpf a0ba26f3 a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/01 13:48 net 01413176 a34e2c33 .config log report
ci-upstream-bpf-kasan-gce 2020/04/01 13:40 bpf a0ba26f3 a34e2c33 .config log report
ci-upstream-bpf-kasan-gce 2020/04/01 11:15 bpf a0ba26f3 a34e2c33 .config log report
ci-upstream-bpf-kasan-gce 2020/04/01 10:14 bpf a0ba26f3 a34e2c33 .config log report
ci-upstream-bpf-kasan-gce 2020/04/01 09:50 bpf a0ba26f3 a34e2c33 .config log report
ci-upstream-bpf-kasan-gce 2020/04/01 08:35 bpf a0ba26f3 a34e2c33 .config log report
ci-upstream-net-this-kasan-gce 2020/04/01 02:13 net 01413176 a34e2c33 .config log report
ci-upstream-bpf-kasan-gce 2020/04/01 01:30 bpf a0ba26f3 a34e2c33 .config log report
ci-upstream-bpf-kasan-gce 2020/03/31 12:08 bpf a0ba26f3 c8d1cc20 .config log report
ci-upstream-bpf-kasan-gce 2020/03/31 09:19 bpf a0ba26f3 c8d1cc20 .config log report
ci-upstream-bpf-kasan-gce 2020/03/31 08:17 bpf a0ba26f3 c8d1cc20 .config log report
ci-upstream-bpf-kasan-gce 2020/03/31 07:16 bpf a0ba26f3 c8d1cc20 .config log report
ci-upstream-net-this-kasan-gce 2020/03/31 07:08 net 01413176 c8d1cc20 .config log report
ci-upstream-bpf-kasan-gce 2020/03/31 04:48 bpf a0ba26f3 c8d1cc20 .config log report
ci-upstream-net-this-kasan-gce 2020/03/31 04:27 net 01413176 c8d1cc20 .config log report
ci-upstream-bpf-kasan-gce 2020/03/31 03:16 bpf a0ba26f3 c8d1cc20 .config log report
ci-upstream-bpf-kasan-gce 2020/03/31 03:01 bpf a0ba26f3 c8d1cc20 .config log report
ci-upstream-bpf-kasan-gce 2020/03/30 23:50 bpf a0ba26f3 c8d1cc20 .config log report
ci-upstream-bpf-kasan-gce 2020/03/30 22:49 bpf a0ba26f3 c8d1cc20 .config log report
ci-upstream-bpf-kasan-gce 2020/03/30 22:09 bpf a0ba26f3 c8d1cc20 .config log report
ci-upstream-bpf-kasan-gce 2020/03/30 21:03 bpf a0ba26f3 c8d1cc20 .config log report
ci-upstream-bpf-next-kasan-gce 2020/04/01 17:45 bpf-next 3902baf9 a34e2c33 .config log report
ci-upstream-bpf-next-kasan-gce 2020/04/01 16:54 bpf-next 3902baf9 a34e2c33 .config log report
ci-upstream-bpf-next-kasan-gce 2020/04/01 14:52 bpf-next 3902baf9 a34e2c33 .config log report
ci-upstream-bpf-next-kasan-gce 2020/04/01 14:49 bpf-next 3902baf9 a34e2c33 .config log report
ci-upstream-bpf-next-kasan-gce 2020/04/01 12:38 bpf-next 3902baf9 a34e2c33 .config log report
ci-upstream-bpf-next-kasan-gce 2020/04/01 11:37 bpf-next 3902baf9 a34e2c33 .config log report
ci-upstream-bpf-next-kasan-gce 2020/04/01 08:48 bpf-next 3902baf9 a34e2c33 .config log report
ci-upstream-bpf-next-kasan-gce 2020/04/01 07:27 bpf-next 3902baf9 a34e2c33 .config log report
ci-upstream-net-kasan-gce 2020/04/01 06:10 net-next 7f80ccfe a34e2c33 .config log report
ci-upstream-net-kasan-gce 2020/04/01 04:53 net-next 7f80ccfe a34e2c33 .config log report
ci-upstream-net-kasan-gce 2020/04/01 03:31 net-next 7f80ccfe a34e2c33 .config log report
ci-upstream-bpf-next-kasan-gce 2020/03/31 11:08 bpf-next 8596a75f c8d1cc20 .config log report
ci-upstream-bpf-next-kasan-gce 2020/03/31 10:23 bpf-next 8596a75f c8d1cc20 .config log report
ci-upstream-bpf-next-kasan-gce 2020/03/31 09:23 bpf-next 8596a75f c8d1cc20 .config log report
ci-upstream-net-kasan-gce 2020/03/31 05:58 net-next 6fe9a949 c8d1cc20 .config log report
ci-upstream-bpf-next-kasan-gce 2020/03/31 01:50 bpf-next 641cd7b0 c8d1cc20 .config log report
ci-upstream-bpf-next-kasan-gce 2020/03/31 00:40 bpf-next 641cd7b0 c8d1cc20 .config log report
ci-upstream-bpf-next-kasan-gce 2020/03/30 20:50 bpf-next 641cd7b0 c8d1cc20 .config log report
ci-upstream-bpf-next-kasan-gce 2020/03/30 19:46 bpf-next 641cd7b0 c8d1cc20 .config log report
ci-upstream-bpf-next-kasan-gce 2020/03/30 19:44 bpf-next 641cd7b0 c8d1cc20 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/02/11 23:38 linux-next ac431e2d 4d1ab643 .config log report
ci-upstream-linux-next-kasan-gce-root 2019/03/06 16:55 linux-next cf08baa2 05cf83bf .config log report