------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(class_idx > MAX_LOCKDEP_KEYS) WARNING: CPU: 1 PID: 13041 at kernel/locking/lockdep.c:3765 __lock_acquire+0x17b5/0x5490 kernel/locking/lockdep.c:3765 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 13041 Comm: syz-executor.2 Not tainted 5.2.0-rc1+ #26 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/0x744 kernel/panic.c:219 __warn.cold+0x20/0x4d kernel/panic.c:576 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:986 RIP: 0010:__lock_acquire+0x17b5/0x5490 kernel/locking/lockdep.c:3765 Code: d2 0f 85 c7 2c 00 00 44 8b 3d a7 9e 29 08 45 85 ff 0f 85 57 f3 ff ff 48 c7 c6 20 c1 6b 87 48 c7 c7 00 98 6b 87 e8 09 d5 eb ff <0f> 0b e9 40 f3 ff ff 0f 0b e9 83 f1 ff ff 8b 0d 47 88 0e 09 85 c9 RSP: 0018:ffff88806480eea0 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 00000000000171e2 RSI: ffffffff815ac7e6 RDI: ffffed100c901dc6 RBP: ffff88806480f048 R08: ffff888063b92500 R09: fffffbfff11730e9 R10: fffffbfff11730e8 R11: ffffffff88b98743 R12: 000000003bfe7e89 R13: 0000000000000000 R14: 00000000000c1e89 R15: 0000000000000000 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:4303 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:338 [inline] __queue_work+0x285/0x1200 kernel/workqueue.c:1449 __queue_delayed_work+0x1d6/0x270 kernel/workqueue.c:1638 mod_delayed_work_on+0xd8/0x200 kernel/workqueue.c:1712 mod_delayed_work include/linux/workqueue.h:524 [inline] addrconf_mod_dad_work+0x3f/0xa0 net/ipv6/addrconf.c:329 addrconf_dad_start+0x76/0xb0 net/ipv6/addrconf.c:4016 addrconf_add_linklocal+0x28c/0x3c0 net/ipv6/addrconf.c:3195 addrconf_addr_gen+0x34d/0x3a0 net/ipv6/addrconf.c:3318 addrconf_dev_config+0x1ea/0x2c0 net/ipv6/addrconf.c:3361 addrconf_notify+0x3bf/0x2270 net/ipv6/addrconf.c:3596 notifier_call_chain+0xc2/0x230 kernel/notifier.c:95 __raw_notifier_call_chain kernel/notifier.c:396 [inline] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1753 call_netdevice_notifiers_mtu net/core/dev.c:1802 [inline] dev_set_mtu_ext+0x396/0x590 net/core/dev.c:7720 dev_set_mtu+0xa5/0x130 net/core/dev.c:7741 team_change_mtu+0xc6/0x1a0 drivers/net/team/team.c:1811 __dev_set_mtu net/core/dev.c:7674 [inline] dev_set_mtu_ext+0x346/0x590 net/core/dev.c:7717 dev_set_mtu+0xa5/0x130 net/core/dev.c:7741 dev_ifsioc+0x357/0x940 net/core/dev_ioctl.c:244 dev_ioctl+0x1b2/0xc60 net/core/dev_ioctl.c:489 sock_do_ioctl+0x1b7/0x2f0 net/socket.c:1072 sock_ioctl+0x3ed/0x780 net/socket.c:1200 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459279 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fdedd26fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459279 RDX: 0000000020000200 RSI: 0000000000008922 RDI: 0000000000000003 RBP: 000000000075c060 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fdedd2706d4 R13: 00000000004c32d3 R14: 00000000004d62b8 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..