syzbot


BUG: MAX_LOCKDEP_CHAINS too low! (2)

Status: fixed on 2021/11/10 00:50
Reported-by: syzbot+4c0c011e71ae95a85ffe@syzkaller.appspotmail.com
Fix commit: 5dc33592e955 lockdep: Allow tuning tracing capacity constants.
First crash: 810d, last: 330d

Cause bisection: failed (bisect log)
similar bugs (4):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 BUG: MAX_LOCKDEP_CHAINS too low! 401 504d 1102d 0/1 auto-closed as invalid on 2021/09/16 14:16
linux-4.19 BUG: MAX_LOCKDEP_CHAINS too low! 61873 8h01m 1265d 0/1 upstream: reported on 2019/04/20 01:26
upstream BUG: MAX_LOCKDEP_CHAINS too low! (3) C error 7442 1h02m 326d 0/24 upstream: reported C repro on 2021/11/14 03:47
upstream BUG: MAX_LOCKDEP_CHAINS too low! C done 17240 810d 1469d 17/24 fixed on 2020/07/17 17:58

Sample crash report:
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 1834 Comm: kworker/u4:4 Not tainted 5.8.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bond1466 bond_resend_igmp_join_requests_delayed
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1f0/0x31e lib/dump_stack.c:118
 add_chain_cache kernel/locking/lockdep.c:452 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3162 [inline]
 validate_chain+0x4e64/0x8920 kernel/locking/lockdep.c:3183
 __lock_acquire+0x116c/0x2c30 kernel/locking/lockdep.c:4380
 lock_acquire+0x160/0x720 kernel/locking/lockdep.c:4959
 __raw_read_lock_bh include/linux/rwlock_api_smp.h:176 [inline]
 _raw_read_lock_bh+0x3a/0x50 kernel/locking/spinlock.c:247
 ipv6_chk_mcast_addr+0x106/0x5b0 net/ipv6/mcast.c:1000
 ip6_finish_output2+0x797/0x1400 net/ipv6/ip6_output.c:73
 dst_output include/net/dst.h:443 [inline]
 NF_HOOK include/linux/netfilter.h:307 [inline]
 mld_sendpack+0x6a0/0xa50 net/ipv6/mcast.c:1679
 ipv6_mc_rejoin_groups net/ipv6/mcast.c:2637 [inline]
 ipv6_mc_netdev_event+0x2da/0x360 net/ipv6/mcast.c:2650
 notifier_call_chain kernel/notifier.c:83 [inline]
 __raw_notifier_call_chain kernel/notifier.c:361 [inline]
 raw_notifier_call_chain+0xe7/0x170 kernel/notifier.c:368
 call_netdevice_notifiers_info net/core/dev.c:2027 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline]
 call_netdevice_notifiers+0xeb/0x150 net/core/dev.c:2053
 bond_resend_igmp_join_requests_delayed+0x5c/0x180 drivers/net/bonding/bond_main.c:590
 process_one_work+0x789/0xfc0 kernel/workqueue.c:2269
 worker_thread+0xaa4/0x1460 kernel/workqueue.c:2415
 kthread+0x37e/0x3a0 drivers/block/aoe/aoecmd.c:1234
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293

Crashes (84838):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2020/07/22 06:37 upstream 4fa640dc5230 21f1765e .config log report syz C
ci-upstream-kasan-gce 2020/07/22 02:31 upstream 4fa640dc5230 21f1765e .config log report syz C
ci-upstream-kasan-gce-root 2020/07/19 00:15 upstream 6a70f89cc58f 9c812472 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/07/18 08:02 upstream 8882572675c1 9c812472 .config log report syz C
ci-upstream-net-this-kasan-gce 2020/07/20 08:29 net a463fa2cda56 9c812472 .config log report syz C
ci-upstream-net-kasan-gce 2020/07/20 04:03 net-next a050d82f5b04 9c812472 .config log report syz C
ci-upstream-net-kasan-gce 2020/07/18 17:05 net-next a050d82f5b04 9c812472 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/07/18 17:48 linux-next 4c43049f19a2 9c812472 .config log report syz C
ci-upstream-kasan-gce-root 2021/11/06 19:24 upstream d4439a1189f9 4c1be0be .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-root 2021/11/06 00:15 upstream d4439a1189f9 4c1be0be .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-root 2021/11/04 05:13 upstream ce840177930f 4c1be0be .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-root 2021/11/02 03:35 upstream 8bb7eca972ad 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-root 2021/11/02 00:41 upstream 8bb7eca972ad 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-root 2021/11/01 22:50 upstream 8bb7eca972ad 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-selinux-root 2021/11/01 10:43 upstream 8bb7eca972ad 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce 2021/11/01 10:18 upstream 8bb7eca972ad 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-smack-root 2021/11/01 08:28 upstream 8bb7eca972ad 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-smack-root 2021/11/01 01:03 upstream 8bb7eca972ad 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-selinux-root 2021/11/01 00:53 upstream 8bb7eca972ad 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-root 2021/10/31 23:48 upstream 8bb7eca972ad 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-smack-root 2021/10/31 11:49 upstream 180eca540ae0 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-root 2021/10/31 11:32 upstream 180eca540ae0 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-root 2021/10/31 10:24 upstream 180eca540ae0 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-root 2021/10/31 09:25 upstream 180eca540ae0 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce 2021/10/31 07:30 upstream 119c85055d86 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-smack-root 2021/10/30 20:55 upstream 119c85055d86 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-smack-root 2021/10/30 20:25 upstream 119c85055d86 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-smack-root 2021/10/30 19:21 upstream 119c85055d86 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-root 2021/10/30 18:46 upstream 119c85055d86 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce 2021/10/29 23:35 upstream f25a5481af12 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-root 2021/10/29 22:05 upstream f25a5481af12 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-root 2021/10/29 21:57 upstream f25a5481af12 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-root 2021/10/29 20:55 upstream f25a5481af12 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-smack-root 2021/10/29 19:45 upstream f25a5481af12 2353a3ec .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-root 2021/10/29 19:25 upstream f25a5481af12 2353a3ec .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-root 2021/10/29 09:38 upstream 411a44c24a56 2353a3ec .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-386 2021/11/03 04:02 upstream bfc484fe6abb 17f3edd2 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-386 2021/11/01 21:30 upstream 8bb7eca972ad 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-this-kasan-gce 2021/11/09 21:08 net 0b9111922b1f 59bcaf9a .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-this-kasan-gce 2021/11/09 14:26 net 0b9111922b1f 59bcaf9a .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-this-kasan-gce 2021/11/08 14:09 net c45231a7668d d29682f1 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-this-kasan-gce 2021/11/08 10:07 net c45231a7668d 4c1be0be .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-this-kasan-gce 2021/11/07 23:19 net 08fcdfa6e3ae 4c1be0be .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-this-kasan-gce 2021/11/07 21:56 net 08fcdfa6e3ae 4c1be0be .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-this-kasan-gce 2021/11/06 23:00 net 70bf363d7adb 4c1be0be .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-this-kasan-gce 2021/11/06 17:59 net 70bf363d7adb 4c1be0be .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-this-kasan-gce 2021/11/06 12:16 net 70bf363d7adb 4c1be0be .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-this-kasan-gce 2021/11/05 07:50 net 436014e860d3 4c1be0be .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-this-kasan-gce 2021/11/04 12:42 net 92f62485b371 4c1be0be .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-this-kasan-gce 2021/11/04 10:52 net 92f62485b371 4c1be0be .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-this-kasan-gce 2021/11/02 02:34 net 6b278c0cb378 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-this-kasan-gce 2021/11/01 19:53 net 6b278c0cb378 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-bpf-kasan-gce 2021/05/12 02:09 bpf bbd6f0a94813 b3c3bb8e .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-kasan-gce 2021/11/02 06:54 net-next 047304d0bfa5 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-kasan-gce 2021/11/02 05:41 net-next 047304d0bfa5 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-kasan-gce 2021/11/01 17:04 net-next c07c6e8eb4b3 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-kasan-gce 2021/11/01 14:59 net-next c07c6e8eb4b3 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-kasan-gce 2021/10/30 23:28 net-next ae0393500e3b 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-kasan-gce 2021/10/30 04:31 net-next 28131d896d6d 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-kasan-gce 2021/10/30 00:44 net-next 28131d896d6d 098b5d53 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-kasan-gce 2021/10/29 18:10 net-next a812a046c22d 2353a3ec .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-kasan-gce 2021/10/29 15:09 net-next a812a046c22d 2353a3ec .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-net-kasan-gce 2021/10/29 10:46 net-next a812a046c22d 2353a3ec .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-bpf-next-kasan-gce 2021/05/10 10:42 bpf-next 3733bfbbdd28 bc5434be .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-linux-next-kasan-gce-root 2021/09/17 04:52 linux-next 368847b165bb 5b989942 .config log report info BUG: MAX_LOCKDEP_CHAINS too low!
ci-upstream-kasan-gce-selinux-root 2021/01/17 14:26 upstream 0da0a8a0a0e1 813be542 .config log report info
ci-upstream-net-kasan-gce 2020/07/17 19:21 net-next 4291dc1a5608 9c812472 .config log report
* Struck through repros no longer work on HEAD.