syzbot


BUG: MAX_LOCKDEP_KEYS too low! (2)

Status: upstream: reported C repro on 2021/05/19 17:35
Labels: net (incorrect?)
Reported-by: syzbot+a70a6358abd2c3f9550f@syzkaller.appspotmail.com
First crash: 754d, last: 2d13h

Cause bisection: introduced by (bisect log) [merge commit]:
commit d99676af540c2dc829999928fb81c58c80a1dce4
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date: Sun Feb 21 22:44:44 2021 +0000

  Merge tag 'drm-next-2021-02-19' of git://anongit.freedesktop.org/drm/drm

Crash: WARNING in kvm_wait (log)
Repro: C syz .config
Discussions (2)
Title Replies (including bot) Last reply
[PATCH] lib/stackdepot: stackdepot: don't use __GFP_KSWAPD_RECLAIM from __stack_depot_save() if atomic context 14 (14) 2023/05/31 13:31
[syzbot] BUG: MAX_LOCKDEP_KEYS too low! (2) 6 (8) 2022/11/08 18:36
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 BUG: MAX_LOCKDEP_KEYS too low! origin:upstream C 4 3d13h 80d 0/3 upstream: reported C repro on 2023/03/20 08:38
upstream BUG: MAX_LOCKDEP_KEYS too low! net C done error 3496 1076d 1320d 17/24 fixed on 2020/12/09 20:00
linux-6.1 BUG: MAX_LOCKDEP_KEYS too low! origin:upstream C 3 3d12h 60d 0/3 upstream: reported C repro on 2023/04/09 03:19

Sample crash report:
8021q: adding VLAN 0 to HW filter on device team1077
BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 1 PID: 11541 Comm: syz-executor315 Not tainted 6.4.0-rc1-syzkaller-00071-g105131df9c3b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
 register_lock_class+0xbab/0x1120 kernel/locking/lockdep.c:1327
 __lock_acquire+0x10a/0x5df0 kernel/locking/lockdep.c:4951
 lock_acquire kernel/locking/lockdep.c:5691 [inline]
 lock_acquire+0x1b1/0x520 kernel/locking/lockdep.c:5656
 __mutex_lock_common kernel/locking/mutex.c:603 [inline]
 __mutex_lock+0x12f/0x1350 kernel/locking/mutex.c:747
 team_vlan_rx_add_vid+0x3c/0x1e0 drivers/net/team/team.c:1904
 vlan_add_rx_filter_info+0x149/0x1d0 net/8021q/vlan_core.c:211
 __vlan_vid_add net/8021q/vlan_core.c:306 [inline]
 vlan_vid_add+0x413/0x820 net/8021q/vlan_core.c:336
 vlan_device_event+0x3e7/0x1fe0 net/8021q/vlan.c:385
 notifier_call_chain+0xb6/0x3c0 kernel/notifier.c:93
 call_netdevice_notifiers_info+0xb9/0x130 net/core/dev.c:1935
 call_netdevice_notifiers_extack net/core/dev.c:1973 [inline]
 call_netdevice_notifiers net/core/dev.c:1987 [inline]
 __dev_notify_flags+0x120/0x2d0 net/core/dev.c:8605
 rtnl_configure_link+0x181/0x260 net/core/rtnetlink.c:3273
 rtnl_newlink_create net/core/rtnetlink.c:3451 [inline]
 __rtnl_newlink+0x10f6/0x1840 net/core/rtnetlink.c:3660
 rtnl_newlink+0x68/0xa0 net/core/rtnetlink.c:3673
 rtnetlink_rcv_msg+0x43d/0xd50 net/core/rtnetlink.c:6395
 netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2546
 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
 netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1365
 netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1913
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg+0xde/0x190 net/socket.c:747
 ____sys_sendmsg+0x71c/0x900 net/socket.c:2503
 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2557
 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2586
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f53844a4319
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd21ec4fb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f53844a4319
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000084511e40 R09: 0000000084511e40
R10: 0000000084511e40 R11: 0000000000000246 R12: 000000000005be86
R13: 00007ffd21ec4fe0 R14: 00007ffd21ec4fd0 R15: 00007ffd21ec4fc4
 </TASK>

Crashes (298):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
2023/05/12 07:25 upstream 105131df9c3b adb9a3cd .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root BUG: MAX_LOCKDEP_KEYS too low!
2023/04/02 11:25 upstream 00c7b5f4ddc5 f325deb0 .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root BUG: MAX_LOCKDEP_KEYS too low!
2023/03/20 04:37 upstream 5cdfdd6da323 7939252e .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root BUG: MAX_LOCKDEP_KEYS too low!
2023/01/22 09:11 upstream f67144022885 559a440a .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/01/04 15:58 upstream 69b41ac87e4a 1dac8c7a .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root BUG: MAX_LOCKDEP_KEYS too low!
2022/12/26 11:44 upstream 1b929c02afd3 9da18ae8 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2022/12/25 20:34 upstream 72a85e2b0a1e 9da18ae8 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root BUG: MAX_LOCKDEP_KEYS too low!
2022/12/07 11:16 upstream 8ed710da2873 d88f3abb .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/06/05 06:43 net 8cde87b007da a4ae4f42 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/01/22 04:40 net-old 71ab9c3e2253 559a440a .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/01/11 11:52 net-old 0aa7d35f5d00 1dac8c7a .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2022/12/26 04:44 net-old be1236fce5f4 9da18ae8 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/06/05 06:42 net-next f69de8aa4752 a4ae4f42 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/01/22 00:15 net-next-old a7b87d2a31dc 559a440a .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/01/11 09:48 net-next-old ef1757ef5846 1dac8c7a .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/05/22 16:01 linux-next 715abedee4cd 4bce1a3e .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: MAX_LOCKDEP_KEYS too low!
2023/03/04 23:21 linux-next 1acf39ef8f14 f8902b57 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: MAX_LOCKDEP_KEYS too low!
2023/01/26 07:16 linux-next 691781f561e9 9dfcf09c .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: MAX_LOCKDEP_KEYS too low!
2023/06/05 06:09 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci eb0f1697d729 a4ae4f42 .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: MAX_LOCKDEP_KEYS too low!
2023/03/20 08:33 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 7939252e .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: MAX_LOCKDEP_KEYS too low!
2023/01/22 03:58 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci edb2f0dc90f2 559a440a .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: MAX_LOCKDEP_KEYS too low!
2023/01/11 06:43 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 358a161a6a9e 1dac8c7a .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: MAX_LOCKDEP_KEYS too low!
2022/12/26 05:57 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci a5541c0811a0 9da18ae8 .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: MAX_LOCKDEP_KEYS too low!
2022/12/07 16:22 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci a5541c0811a0 d88f3abb .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: MAX_LOCKDEP_KEYS too low!
2022/11/08 13:40 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 3577a7611842 881db35d .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: MAX_LOCKDEP_KEYS too low!
2023/05/16 08:55 upstream f1fcbaa18b28 71b00cfb .config console log report syz [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root BUG: MAX_LOCKDEP_KEYS too low!
2023/06/04 16:34 upstream e5282a7d8f6b a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/06/03 07:25 upstream 4ecd704a4c51 a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/05/18 22:01 upstream 4d6d4c7f541d 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/05/07 11:14 upstream fc4354c6e5c2 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root BUG: MAX_LOCKDEP_KEYS too low!
2023/05/06 19:09 upstream 2e1e1337881b 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root BUG: MAX_LOCKDEP_KEYS too low!
2023/04/26 21:34 upstream 0cfd8703e7da 19a3dabe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root BUG: MAX_LOCKDEP_KEYS too low!
2023/04/26 12:56 upstream 4173cf6fb6b7 7560799c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root BUG: MAX_LOCKDEP_KEYS too low!
2023/04/23 10:31 upstream 622322f53c6d 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/04/15 22:09 upstream 7a934f4bd7d6 ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root BUG: MAX_LOCKDEP_KEYS too low!
2023/04/14 16:47 upstream 44149752e998 3cfcaa1b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root BUG: MAX_LOCKDEP_KEYS too low!
2023/04/06 12:58 upstream 99ddf2254feb 08707520 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root BUG: MAX_LOCKDEP_KEYS too low!
2023/04/05 02:48 upstream 76f598ba7d8e 831373d3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root BUG: MAX_LOCKDEP_KEYS too low!
2023/03/19 12:12 upstream a3671bd86a97 7939252e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root BUG: MAX_LOCKDEP_KEYS too low!
2023/03/14 07:57 upstream fc89d7fb499b 026e2200 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/02/17 16:54 upstream ec35307e18ba 3e7039f4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/04/20 22:43 upstream cb0856346a60 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 BUG: MAX_LOCKDEP_KEYS too low!
2023/04/05 12:49 upstream 76f598ba7d8e 831373d3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 BUG: MAX_LOCKDEP_KEYS too low!
2023/06/06 06:14 net fb928170e32e a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/05/20 19:38 net 67caf26d769e 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/05/17 20:05 net 6ad85ed0ebf7 eaac4681 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/05/09 07:07 net 27c1eaa07283 f4168103 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/05/02 23:34 net fb7cba61919a 48e0a81d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/04/18 04:53 net 338469d677e5 436577a9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/04/06 15:10 net 24e3fce00c0b 08707520 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/04/05 08:23 net 218c597325f4 831373d3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/03/26 23:18 net 33189f0a94b9 fbf0499a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/03/26 04:49 net 33189f0a94b9 fbf0499a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/03/25 08:18 net f33642224e38 fbf0499a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/03/24 03:50 net b1de5c78ebe9 f94b4a29 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2021/05/15 17:31 net-old b81ac7841d51 93f844de .config console log report info ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/05/20 14:04 net-next dcbe4ea1985d 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/05/20 00:24 net-next 20d5e0ef252a 96689200 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/05/14 13:04 net-next befcc1fce564 2b9ba477 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/05/04 19:16 net-next 042334a8d424 3a560463 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/05/03 11:43 net-next 042334a8d424 48e0a81d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/04/28 13:46 net-next 042334a8d424 457a6e0a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/04/28 04:16 net-next 6e98b09da931 70a605de .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/04/13 06:49 net-next ed72bd5a6790 82d5e53e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/04/12 09:48 net-next 18bb56ab4477 1a1596b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/03/31 14:40 net-next ee05d90d0ac7 f325deb0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/03/30 10:37 net-next 615927f1a487 f325deb0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/03/30 02:56 net-next 3b064f541be8 f325deb0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/03/28 22:01 net-next d8b0c963e919 48c74771 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/03/28 17:39 net-next d8b0c963e919 48c74771 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/03/19 10:18 net-next df28e8690e71 7939252e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/03/07 16:55 net-next 36e5e391a25a ffaa5c55 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/02/26 10:29 net-next-old 5b7c4cabbb65 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/02/15 18:19 net-next-old 1ed32ad4a3cb 6be0f1f5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_KEYS too low!
2023/04/15 20:09 linux-next d3f2cd248191 ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: MAX_LOCKDEP_KEYS too low!
2023/04/14 06:51 linux-next e3342532ecd3 3cfcaa1b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: MAX_LOCKDEP_KEYS too low!
2023/04/14 04:57 linux-next e3342532ecd3 3cfcaa1b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: MAX_LOCKDEP_KEYS too low!
2023/04/04 13:02 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59caa87f9dfb 928dd177 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: MAX_LOCKDEP_KEYS too low!
* Struck through repros no longer work on HEAD.