8021q: adding VLAN 0 to HW filter on device team0
8021q: adding VLAN 0 to HW filter on device team0
8021q: adding VLAN 0 to HW filter on device team0
8021q: adding VLAN 0 to HW filter on device team0
=====================================================
BUG: KMSAN: uninit-value in memcmp lib/string.c:926 [inline]
BUG: KMSAN: uninit-value in bcmp+0x136/0x190 lib/string.c:948
CPU: 1 PID: 7518 Comm: syz-executor0 Not tainted 5.8.0-rc5-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+0x1df/0x240 lib/dump_stack.c:118
 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:121
 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215
 memcmp lib/string.c:926 [inline]
 bcmp+0x136/0x190 lib/string.c:948
 __hw_addr_del_ex net/core/dev_addr_lists.c:120 [inline]
 __dev_mc_del+0x1dc/0x6f0 net/core/dev_addr_lists.c:816
 dev_mc_del+0x6d/0x80 net/core/dev_addr_lists.c:834
 igmp6_group_dropped+0x2d3/0x1450 net/ipv6/mcast.c:705
 __ipv6_dev_mc_dec+0x657/0xb40 net/ipv6/mcast.c:955
 addrconf_leave_solict net/ipv6/addrconf.c:2154 [inline]
 __ipv6_ifa_notify+0x11a6/0x1c70 net/ipv6/addrconf.c:6040
 addrconf_ifdown+0x16b6/0x27c0 net/ipv6/addrconf.c:3791
 addrconf_notify+0x571/0x5ae0 net/ipv6/addrconf.c:3471
 notifier_call_chain kernel/notifier.c:83 [inline]
 __raw_notifier_call_chain kernel/notifier.c:361 [inline]
 raw_notifier_call_chain+0x130/0x250 kernel/notifier.c:368
 call_netdevice_notifiers_info net/core/dev.c:2027 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline]
 call_netdevice_notifiers net/core/dev.c:2053 [inline]
 dev_close_many+0x673/0xaf0 net/core/dev.c:1628
 rollback_registered_many+0x8ae/0x25e0 net/core/dev.c:8945
 rollback_registered net/core/dev.c:9013 [inline]
 unregister_netdevice_queue+0x58f/0xac0 net/core/dev.c:10094
 unregister_netdevice include/linux/netdevice.h:2754 [inline]
 __tun_detach+0x23f3/0x2d70 drivers/net/tun.c:691
 tun_detach drivers/net/tun.c:708 [inline]
 tun_chr_close+0xda/0x1c0 drivers/net/tun.c:3423
 __fput+0x4ae/0xb80 fs/file_table.c:281
 ____fput+0x37/0x40 fs/file_table.c:314
 task_work_run+0x1ee/0x2d0 kernel/task_work.c:135
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop arch/x86/entry/common.c:240 [inline]
 __prepare_exit_to_usermode+0x422/0x4d0 arch/x86/entry/common.c:270
 __syscall_return_slowpath+0x79/0xc0 arch/x86/entry/common.c:353
 do_syscall_64+0xd6/0x150 arch/x86/entry/common.c:395
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x411051
Code: Bad RIP value.
RSP: 002b:00007ffca719d370 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000411051
RDX: 0000000000000000 RSI: 0000000000730360 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 00007ffca719d2a0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000

Local variable ----buf@igmp6_group_dropped created at:
 igmp6_group_dropped+0xa1/0x1450 net/ipv6/mcast.c:695
 igmp6_group_dropped+0xa1/0x1450 net/ipv6/mcast.c:695
=====================================================