------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(class_idx > MAX_LOCKDEP_KEYS) WARNING: CPU: 0 PID: 7514 at kernel/locking/lockdep.c:3673 __lock_acquire+0x1887/0x3fb0 kernel/locking/lockdep.c:3673 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 7514 Comm: udevd Not tainted 5.1.0-rc6+ #186 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 panic+0x2cb/0x65c kernel/panic.c:214 __warn.cold+0x20/0x45 kernel/panic.c:571 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973 RIP: 0010:__lock_acquire+0x1887/0x3fb0 kernel/locking/lockdep.c:3673 Code: d2 0f 85 7b 1f 00 00 44 8b 3d 29 13 07 08 45 85 ff 0f 85 20 f3 ff ff 48 c7 c6 20 41 6b 87 48 c7 c7 60 17 6b 87 e8 27 e3 eb ff <0f> 0b e9 09 f3 ff ff 0f 0b e9 41 f1 ff ff 8b 1d 85 42 05 09 85 db RSP: 0018:ffff8880ae807a98 EFLAGS: 00010086 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000100 RSI: ffffffff815afcf6 RDI: ffffed1015d00f45 RBP: ffff8880ae807bd0 R08: ffff88809613e2c0 R09: fffffbfff1133639 R10: fffffbfff1133638 R11: ffffffff8899b1c3 R12: 000000003391902e R13: 0000000000000030 R14: 00000000000c302e R15: 0000000000000000 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:4211 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] __queue_work+0x99f/0x10e0 kernel/workqueue.c:1446 delayed_work_timer_fn+0x5d/0x90 kernel/workqueue.c:1616 call_timer_fn+0x190/0x720 kernel/time/timer.c:1325 expire_timers kernel/time/timer.c:1358 [inline] __run_timers kernel/time/timer.c:1681 [inline] __run_timers kernel/time/timer.c:1649 [inline] run_timer_softirq+0x44c/0x1700 kernel/time/timer.c:1694 __do_softirq+0x266/0x95a kernel/softirq.c:293 invoke_softirq kernel/softirq.c:374 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:414 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x14a/0x570 arch/x86/kernel/apic/apic.c:1062 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 RIP: 0010:netlink_recvmsg+0x19b/0xf10 net/netlink/af_netlink.c:1956 Code: 3c 02 00 0f 85 f6 0c 00 00 4d 03 bc 24 c0 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7f 08 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 b1 0c 00 00 49 8b 47 08 48 85 c0 48 89 85 e8 fe ff ff 0f 85 RSP: 0018:ffff888091667a08 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: ffff888087f13100 RCX: 0000000000000000 RDX: 1ffff11012497aa1 RSI: ffffffff85a8891d RDI: ffff8880924bd508 RBP: ffff888091667b48 R08: ffff88809613e2c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a139fa40 R13: ffff888091667b20 R14: 0000000000002000 R15: ffff8880924bd500 sock_recvmsg_nosec net/socket.c:881 [inline] sock_recvmsg net/socket.c:888 [inline] sock_recvmsg+0xd0/0x110 net/socket.c:884 ___sys_recvmsg+0x273/0x5a0 net/socket.c:2422 __sys_recvmsg+0x102/0x1d0 net/socket.c:2471 __do_sys_recvmsg net/socket.c:2481 [inline] __se_sys_recvmsg net/socket.c:2478 [inline] __x64_sys_recvmsg+0x78/0xb0 net/socket.c:2478 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7feb6aa45210 Code: 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 90 90 90 90 90 90 90 90 90 90 83 3d e5 d3 2a 00 00 75 10 b8 2f 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 6e bb 00 00 48 89 04 24 RSP: 002b:00007fffacb88c88 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 00007fffacb8adf0 RCX: 00007feb6aa45210 RDX: 0000000000000000 RSI: 00007fffacb88cf0 RDI: 000000000000000b RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fffacb88d50 R13: 000000000201f730 R14: 000000000201f730 R15: 000000000000000b Kernel Offset: disabled Rebooting in 86400 seconds..