8021q: adding VLAN 0 to HW filter on device macvtap392
BUG: MAX_LOCKDEP_ENTRIES too low!
turning off the locking correctness validator.
CPU: 0 PID: 20379 Comm: syz-executor.5 Not tainted 5.7.0-rc2-syzkaller #0
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+0x188/0x20d lib/dump_stack.c:118
 alloc_list_entry.cold+0x11/0x18 kernel/locking/lockdep.c:1329
 add_lock_to_list kernel/locking/lockdep.c:1350 [inline]
 check_prev_add kernel/locking/lockdep.c:2567 [inline]
 check_prevs_add kernel/locking/lockdep.c:2620 [inline]
 validate_chain kernel/locking/lockdep.c:3237 [inline]
 __lock_acquire+0x2f26/0x4c50 kernel/locking/lockdep.c:4355
 lock_acquire+0x1f2/0x8f0 kernel/locking/lockdep.c:4934
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:175
 spin_lock_bh include/linux/spinlock.h:358 [inline]
 netif_addr_lock_bh include/linux/netdevice.h:4226 [inline]
 __dev_mc_add+0x28/0xd0 net/core/dev_addr_lists.c:765
 igmp6_group_added+0x375/0x420 net/ipv6/mcast.c:672
 __ipv6_dev_mc_inc+0x819/0xca0 net/ipv6/mcast.c:931
 ipv6_add_dev net/ipv6/addrconf.c:458 [inline]
 ipv6_add_dev+0xa3d/0x10b0 net/ipv6/addrconf.c:365
 addrconf_notify+0x89c/0x2270 net/ipv6/addrconf.c:3490
 notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
 call_netdevice_notifiers_info net/core/dev.c:2018 [inline]
 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2003
 call_netdevice_notifiers_extack net/core/dev.c:2030 [inline]
 call_netdevice_notifiers net/core/dev.c:2044 [inline]
 register_netdevice+0xd70/0x10b0 net/core/dev.c:9499
 macvlan_common_newlink+0xc04/0x14a0 drivers/net/macvlan.c:1465
 macvtap_newlink drivers/net/macvtap.c:109 [inline]
 macvtap_newlink+0x190/0x260 drivers/net/macvtap.c:81
 __rtnl_newlink+0xf18/0x1590 net/core/rtnetlink.c:3340
 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3398
 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5461
 netlink_rcv_skb+0x15a/0x410 net/netlink/af_netlink.c:2469
 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
 netlink_unicast+0x537/0x740 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0x882/0xe10 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:672
 ____sys_sendmsg+0x6bf/0x7e0 net/socket.c:2362
 ___sys_sendmsg+0x100/0x170 net/socket.c:2416
 __sys_sendmsg+0xec/0x1b0 net/socket.c:2449
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x45c829
Code: 0d 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 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f5cdc402c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000500a40 RCX: 000000000045c829
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000004
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000009fe R14: 00000000004ccb57 R15: 00007f5cdc4036d4
8021q: adding VLAN 0 to HW filter on device macvtap393