netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'.
BUG: spinlock bad magic on CPU#0, syz-executor0/1737
 lock: 0xffff8880ae82c7e0, .magic: ffffffff, .owner: %us workers=%d/1902867055, .owner_cpu: 0
CPU: 0 PID: 1737 Comm: syz-executor0 Not tainted 5.0.0-rc4+ #40
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
 spin_dump.cold+0x81/0xe6 kernel/locking/spinlock_debug.c:67
 spin_bug kernel/locking/spinlock_debug.c:75 [inline]
 debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
 do_raw_spin_lock+0x231/0x2e0 kernel/locking/spinlock_debug.c:112
 __raw_spin_lock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_lock+0x37/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 __queue_work+0x23d/0x1180 kernel/workqueue.c:1417
 __queue_delayed_work+0x1d6/0x270 kernel/workqueue.c:1522
 mod_delayed_work_on+0xd8/0x200 kernel/workqueue.c:1596
 mod_delayed_work include/linux/workqueue.h:542 [inline]
 addrconf_mod_dad_work+0x3f/0xa0 net/ipv6/addrconf.c:328
 addrconf_dad_start+0x76/0xb0 net/ipv6/addrconf.c:4011
 addrconf_add_linklocal+0x28c/0x3c0 net/ipv6/addrconf.c:3190
 addrconf_addr_gen+0x34d/0x3a0 net/ipv6/addrconf.c:3313
 addrconf_dev_config+0x1ea/0x2c0 net/ipv6/addrconf.c:3356
 addrconf_notify+0x3c5/0x2280 net/ipv6/addrconf.c:3591
kobject: 'loop4' (00000000f520b29a): kobject_uevent_env
kobject: 'loop4' (00000000f520b29a): fill_kobj_path: path = '/devices/virtual/block/loop4'
 notifier_call_chain+0xc7/0x240 kernel/notifier.c:93
 __raw_notifier_call_chain kernel/notifier.c:394 [inline]
 raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401
 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1739
 call_netdevice_notifiers_extack net/core/dev.c:1751 [inline]
 call_netdevice_notifiers net/core/dev.c:1765 [inline]
 dev_open net/core/dev.c:1436 [inline]
 dev_open+0x143/0x160 net/core/dev.c:1424
 ipmr_new_tunnel+0x3d3/0x4d0 net/ipv4/ipmr.c:511
 vif_add+0x1bd/0xed0 net/ipv4/ipmr.c:873
 ip_mroute_setsockopt+0xd05/0xe10 net/ipv4/ipmr.c:1453
 do_ip_setsockopt.isra.0+0x3036/0x3e00 net/ipv4/ip_sockglue.c:638
 ip_setsockopt+0x49/0x100 net/ipv4/ip_sockglue.c:1246
 raw_setsockopt+0xe0/0x100 net/ipv4/raw.c:860
 sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:3016
 __sys_setsockopt+0x180/0x280 net/socket.c:1902
 __do_sys_setsockopt net/socket.c:1913 [inline]
 __se_sys_setsockopt net/socket.c:1910 [inline]
 __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1910
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457e39
Code: ad b8 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fbac2bcec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000457e39
RDX: 00000000000000ca RSI: 0000000000000000 RDI: 0000000000000004
RBP: 000000000073bfa0 R08: 0000000000000010 R09: 0000000000000000
R10: 0000000020000000 R11: 0000000000000246 R12: 00007fbac2bcf6d4
R13: 00000000004c5c09 R14: 00000000004da070 R15: 00000000ffffffff
netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'.