IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
================================================================================
UBSAN: object-size-mismatch in ./include/linux/skbuff.h:2023:28
member access within address ffffc90000c671c0 with insufficient space
for an object of type 'struct sk_buff'
CPU: 0 PID: 378 Comm: kworker/0:2 Not tainted 5.10.78-syzkaller-01155-gbb235e8cc2b6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack_lvl+0x1e2/0x24b lib/dump_stack.c:118
 dump_stack+0x15/0x1d lib/dump_stack.c:135
 ubsan_epilogue lib/ubsan.c:148 [inline]
 handle_object_size_mismatch lib/ubsan.c:229 [inline]
 ubsan_type_mismatch_common+0x1ed/0x3a0 lib/ubsan.c:242
 __ubsan_handle_type_mismatch_v1+0x5b/0x70 lib/ubsan.c:271
 __skb_queue_before include/linux/skbuff.h:2023 [inline]
 __skb_queue_tail include/linux/skbuff.h:2056 [inline]
 wg_xmit+0x4a2/0xae0 drivers/net/wireguard/device.c:182
 __netdev_start_xmit include/linux/netdevice.h:4823 [inline]
 netdev_start_xmit+0x8a/0x160 include/linux/netdevice.h:4837
 xmit_one net/core/dev.c:3589 [inline]
 dev_hard_start_xmit+0x18d/0x2f0 net/core/dev.c:3605
 __dev_queue_xmit+0xfbe/0x1bb0 net/core/dev.c:4167
 dev_queue_xmit+0x17/0x20 net/core/dev.c:4200
 neigh_connected_output+0x288/0x2b0 net/core/neighbour.c:1526
 neigh_output include/net/neighbour.h:518 [inline]
 ip6_finish_output2+0xde2/0x1440 net/ipv6/ip6_output.c:145
 __ip6_finish_output+0x3e4/0x520 net/ipv6/ip6_output.c:210
 ip6_finish_output+0x3f/0x220 net/ipv6/ip6_output.c:220
 NF_HOOK_COND include/linux/netfilter.h:293 [inline]
 ip6_output+0x1f8/0x4b0 net/ipv6/ip6_output.c:243
 dst_output include/net/dst.h:443 [inline]
 NF_HOOK+0xdd/0x280 include/linux/netfilter.h:304
 ndisc_send_skb+0x646/0x9f0 net/ipv6/ndisc.c:508
 ndisc_send_rs+0x26c/0x360 net/ipv6/ndisc.c:702
 addrconf_dad_completed+0x4f3/0x9f0 net/ipv6/addrconf.c:4221
 addrconf_dad_work+0x9c1/0x1520 net/ipv6/addrconf.c:3986
 process_one_work+0x3ca/0x660 kernel/workqueue.c:2289
 worker_thread+0x709/0xa20 kernel/workqueue.c:2435
 kthread+0x371/0x390 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
================================================================================
================================================================================
UBSAN: object-size-mismatch in ./include/linux/skbuff.h:1916:2
member access within address ffffc90000c671c0 with insufficient space
for an object of type 'struct sk_buff'
CPU: 0 PID: 378 Comm: kworker/0:2 Not tainted 5.10.78-syzkaller-01155-gbb235e8cc2b6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack_lvl+0x1e2/0x24b lib/dump_stack.c:118
 dump_stack+0x15/0x1d lib/dump_stack.c:135
 ubsan_epilogue lib/ubsan.c:148 [inline]
 handle_object_size_mismatch lib/ubsan.c:229 [inline]
 ubsan_type_mismatch_common+0x1ed/0x3a0 lib/ubsan.c:242
 __ubsan_handle_type_mismatch_v1+0x5b/0x70 lib/ubsan.c:271
 __skb_insert include/linux/skbuff.h:1916 [inline]
 __skb_queue_before include/linux/skbuff.h:2023 [inline]
 __skb_queue_tail include/linux/skbuff.h:2056 [inline]
 wg_xmit+0x513/0xae0 drivers/net/wireguard/device.c:182
 __netdev_start_xmit include/linux/netdevice.h:4823 [inline]
 netdev_start_xmit+0x8a/0x160 include/linux/netdevice.h:4837
 xmit_one net/core/dev.c:3589 [inline]
 dev_hard_start_xmit+0x18d/0x2f0 net/core/dev.c:3605
 __dev_queue_xmit+0xfbe/0x1bb0 net/core/dev.c:4167
 dev_queue_xmit+0x17/0x20 net/core/dev.c:4200
 neigh_connected_output+0x288/0x2b0 net/core/neighbour.c:1526
 neigh_output include/net/neighbour.h:518 [inline]
 ip6_finish_output2+0xde2/0x1440 net/ipv6/ip6_output.c:145
 __ip6_finish_output+0x3e4/0x520 net/ipv6/ip6_output.c:210
 ip6_finish_output+0x3f/0x220 net/ipv6/ip6_output.c:220
 NF_HOOK_COND include/linux/netfilter.h:293 [inline]
 ip6_output+0x1f8/0x4b0 net/ipv6/ip6_output.c:243
 dst_output include/net/dst.h:443 [inline]
 NF_HOOK+0xdd/0x280 include/linux/netfilter.h:304
 ndisc_send_skb+0x646/0x9f0 net/ipv6/ndisc.c:508
 ndisc_send_rs+0x26c/0x360 net/ipv6/ndisc.c:702
 addrconf_dad_completed+0x4f3/0x9f0 net/ipv6/addrconf.c:4221
 addrconf_dad_work+0x9c1/0x1520 net/ipv6/addrconf.c:3986
 process_one_work+0x3ca/0x660 kernel/workqueue.c:2289
 worker_thread+0x709/0xa20 kernel/workqueue.c:2435
 kthread+0x371/0x390 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
================================================================================