syzbot


BUG: MAX_LOCKDEP_ENTRIES too low! (3)

Status: upstream: reported C repro on 2022/11/16 22:12
Subsystems: net
Labels: no-reminders
[Documentation on labels]
Reported-by: syzbot+b04c9ffbbd2f303d00d9@syzkaller.appspotmail.com
First crash: 390d, last: 6d17h
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 (3)
Title Replies (including bot) Last reply
[syzbot] Monthly net report (Jul 2023) 0 (1) 2023/08/01 12:53
[PATCH] lib/stackdepot: stackdepot: don't use __GFP_KSWAPD_RECLAIM from __stack_depot_save() if atomic context 16 (16) 2023/06/21 15:37
[syzbot] BUG: MAX_LOCKDEP_ENTRIES too low! (3) 0 (2) 2022/11/22 07:57
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 BUG: MAX_LOCKDEP_ENTRIES too low! origin:upstream C 2 8d09h 104d 0/3 upstream: reported C repro on 2023/08/21 09:06
upstream BUG: MAX_LOCKDEP_ENTRIES too low! C done 179076 939d 1630d 22/25 fixed on 2021/11/10 00:50
linux-5.15 BUG: MAX_LOCKDEP_ENTRIES too low! origin:upstream missing-backport C done 5 83d 200d 0/3 upstream: reported C repro on 2023/05/17 04:24
upstream BUG: MAX_LOCKDEP_ENTRIES too low! (2) kernel 9 564d 718d 0/25 auto-closed as invalid on 2022/08/16 22:49
Last patch testing requests (7)
Created Duration User Patch Repo Result
2023/11/14 00:37 24m retest repro net-next OK log
2023/11/13 06:22 22m retest repro linux-next OK log
2023/11/13 06:22 22m retest repro upstream OK log
2023/11/13 06:22 22m retest repro upstream OK log
2023/11/13 06:22 24m retest repro linux-next OK log
2023/11/13 05:49 23m retest repro net OK log
2022/11/22 10:14 15m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git 9ab000d9ac54 report log

Sample crash report:
BUG: MAX_LOCKDEP_ENTRIES too low!
turning off the locking correctness validator.
CPU: 0 PID: 6077 Comm: syz-executor294 Not tainted 6.7.0-rc2-syzkaller-00103-ga524eabcd72d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 alloc_list_entry kernel/locking/lockdep.c:1397 [inline]
 add_lock_to_list+0x259/0x380 kernel/locking/lockdep.c:1418
 check_prev_add kernel/locking/lockdep.c:3204 [inline]
 check_prevs_add kernel/locking/lockdep.c:3253 [inline]
 validate_chain kernel/locking/lockdep.c:3868 [inline]
 __lock_acquire+0x2c30/0x3b10 kernel/locking/lockdep.c:5136
 lock_acquire kernel/locking/lockdep.c:5753 [inline]
 lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5718
 __mutex_lock_common kernel/locking/mutex.c:603 [inline]
 __mutex_lock+0x175/0x9d0 kernel/locking/mutex.c:747
 pcpu_alloc+0xbb8/0x1420 mm/percpu.c:1769
 mpls_add_dev net/mpls/af_mpls.c:1465 [inline]
 mpls_dev_notify+0x359/0xa00 net/mpls/af_mpls.c:1618
 notifier_call_chain+0xb6/0x3b0 kernel/notifier.c:93
 call_netdevice_notifiers_info+0xbe/0x130 net/core/dev.c:1967
 call_netdevice_notifiers_extack net/core/dev.c:2005 [inline]
 call_netdevice_notifiers net/core/dev.c:2019 [inline]
 register_netdevice+0x16d3/0x1da0 net/core/dev.c:10251
 bpq_new_device drivers/net/hamradio/bpqether.c:499 [inline]
 bpq_device_event+0x39e/0xaf0 drivers/net/hamradio/bpqether.c:542
 notifier_call_chain+0xb6/0x3b0 kernel/notifier.c:93
 call_netdevice_notifiers_info+0xbe/0x130 net/core/dev.c:1967
 call_netdevice_notifiers_extack net/core/dev.c:2005 [inline]
 call_netdevice_notifiers net/core/dev.c:2019 [inline]
 dev_open net/core/dev.c:1488 [inline]
 dev_open+0x13c/0x150 net/core/dev.c:1476
 team_port_add drivers/net/team/team.c:1213 [inline]
 team_add_slave+0xb4b/0x2130 drivers/net/team/team.c:1973
 do_set_master+0x1c1/0x220 net/core/rtnetlink.c:2710
 rtnl_newlink_create net/core/rtnetlink.c:3538 [inline]
 __rtnl_newlink+0x14e4/0x1930 net/core/rtnetlink.c:3741
 rtnl_newlink+0x67/0xa0 net/core/rtnetlink.c:3754
 rtnetlink_rcv_msg+0x3c7/0xe00 net/core/rtnetlink.c:6558
 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2545
 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline]
 netlink_unicast+0x53b/0x810 net/netlink/af_netlink.c:1368
 netlink_sendmsg+0x93c/0xe40 net/netlink/af_netlink.c:1910
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0xd5/0x180 net/socket.c:745
 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2584
 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2638
 __sys_sendmsg+0x117/0x1e0 net/socket.c:2667
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f067f9b6c19
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc8a4e19c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f067f9b6c19
RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000006 R09: 0000000000000006
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
 </TASK>
8021q: adding VLAN 0 to HW filter on device batadv954
team954: Port device batadv954 added

Crashes (433):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/11/27 01:21 net a524eabcd72d 5b429f39 .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/11/27 06:43 net-next dba1b8a7ab68 5b429f39 .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/07/12 12:41 upstream 3f01e9fed845 2f19aa4f .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root BUG: MAX_LOCKDEP_ENTRIES too low!
2022/11/22 08:51 upstream eb7081409f94 1c576c23 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root BUG: MAX_LOCKDEP_ENTRIES too low!
2022/11/22 07:56 net-old 9ab000d9ac54 1c576c23 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2022/11/23 04:10 net-next-old 339e79dfb087 9da37ae8 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/01/03 04:03 linux-next c76083fac3ba ab32d508 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: MAX_LOCKDEP_ENTRIES too low!
2022/12/23 20:50 linux-next e45fb347b630 9da18ae8 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: MAX_LOCKDEP_ENTRIES too low!
2023/11/22 12:23 upstream c2d5304e6c64 cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root BUG: MAX_LOCKDEP_ENTRIES too low!
2023/10/30 05:44 upstream 2af9b20dbb39 3c418d72 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root BUG: MAX_LOCKDEP_ENTRIES too low!
2023/10/16 11:52 upstream 58720809f527 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/09/27 04:12 upstream 50768a425b46 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root BUG: MAX_LOCKDEP_ENTRIES too low!
2023/09/20 10:32 upstream 2cf0f7156238 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/29 19:22 upstream 1c59d383390f 7ba13a15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/29 03:33 upstream 727dbda16b83 7ba13a15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/28 12:07 upstream 2dde18cd1d8f 03d9c195 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/28 02:03 upstream 85eb043618bb 03d9c195 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/27 22:04 upstream 85eb043618bb 03d9c195 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/25 20:12 upstream 4f9e7fabf864 03d9c195 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/25 09:32 upstream f8d6ff449094 49be837e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/24 02:16 upstream a5e505a99ca7 4d7ae7ab .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/23 18:51 upstream 89bf6209cad6 b81ca3f6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/22 17:29 upstream f7757129e3de b81ca3f6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/20 10:25 upstream 9e6c269de404 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/20 03:35 upstream 9e6c269de404 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/18 05:26 upstream 16931859a650 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/15 15:46 upstream 91aa6c412d7f 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/14 08:45 upstream 2ccdd1b13c59 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/01 07:53 upstream 5d0c230f1de8 2a0d0f29 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root BUG: MAX_LOCKDEP_ENTRIES too low!
2022/11/14 15:55 upstream 094226ad94f4 943f4cb8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/27 05:53 upstream 28f20a19294d 03d9c195 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/22 05:56 upstream f7757129e3de 6b415825 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 BUG: MAX_LOCKDEP_ENTRIES too low!
2023/11/26 17:43 net a524eabcd72d 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/09/06 06:25 net d3287e4038ca 8bc9053e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/27 11:54 net 5c905279a1b7 03d9c195 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/25 14:58 net 786c96e92fb9 03d9c195 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/22 04:09 net be809424659c 6b415825 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/21 14:14 net d1cdbf66e18c d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/19 07:25 net d44036cad311 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/19 00:42 net 820a38d8f2cb d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/17 23:52 net e9bbd6016947 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/15 06:32 net 855067defa36 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/14 01:15 net cc941e548bff 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/08 09:18 net fa41884c1c6d b1b6ae3d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2022/11/10 14:53 net-old 27c064ae14d1 b2488a87 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2022/11/08 09:55 net-old c23fb2c82267 881db35d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/10/09 16:31 net-next 19537e125cc7 3c53c7d9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/09/07 06:58 net-next bd6c11bc43c4 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/09/04 14:54 net-next bd6c11bc43c4 8bc9053e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/30 23:49 net-next bd6c11bc43c4 84803932 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/30 20:22 net-next bd6c11bc43c4 84803932 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/28 23:21 net-next 4b151e75aa5e 7ba13a15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/25 03:18 net-next 59da9885767a 49be837e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/16 03:38 net-next c65dffc6f25c 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/14 19:02 net-next 83b5f0253b1e 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/13 14:09 net-next 2f4503f94c5d 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/12 00:47 net-next 80f9ad046052 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/10 11:52 net-next 29afcd69672a 4df3089c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/09 16:35 net-next b9b05381e5d7 13ca4cd6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/09 15:25 net-next b9b05381e5d7 13ca4cd6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/08/08 15:44 net-next b98a5aa7e4c2 3c27dfcd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: MAX_LOCKDEP_ENTRIES too low!
2023/07/19 05:03 linux-next aeba456828b4 022df2bb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: MAX_LOCKDEP_ENTRIES too low!
* Struck through repros no longer work on HEAD.