=====================================================
BUG: KMSAN: uninit-value in decode_session6 net/xfrm/xfrm_policy.c:3467 [inline]
BUG: KMSAN: uninit-value in __xfrm_decode_session+0x880/0x2890 net/xfrm/xfrm_policy.c:3556
 decode_session6 net/xfrm/xfrm_policy.c:3467 [inline]
 __xfrm_decode_session+0x880/0x2890 net/xfrm/xfrm_policy.c:3556
 xfrm_decode_session_reverse include/net/xfrm.h:1217 [inline]
 icmpv6_route_lookup+0x7ac/0xb20 net/ipv6/icmp.c:387
 icmp6_send+0x2324/0x2b50 net/ipv6/icmp.c:591
 __icmpv6_send include/linux/icmpv6.h:28 [inline]
 icmpv6_send include/linux/icmpv6.h:49 [inline]
 ip6_link_failure+0x40/0x320 net/ipv6/route.c:2786
 dst_link_failure include/net/dst.h:423 [inline]
 ip6_tnl_xmit+0x257b/0x3bb0 net/ipv6/ip6_tunnel.c:1268
 ipxip6_tnl_xmit net/ipv6/ip6_tunnel.c:1384 [inline]
 ip6_tnl_start_xmit+0x1af3/0x1d20 net/ipv6/ip6_tunnel.c:1432
 __netdev_start_xmit include/linux/netdevice.h:4884 [inline]
 netdev_start_xmit include/linux/netdevice.h:4898 [inline]
 xmit_one net/core/dev.c:3581 [inline]
 dev_hard_start_xmit+0x253/0xa20 net/core/dev.c:3597
 sch_direct_xmit+0x3f7/0xdc0 net/sched/sch_generic.c:342
 qdisc_restart net/sched/sch_generic.c:407 [inline]
 __qdisc_run+0x139b/0x3360 net/sched/sch_generic.c:415
 __dev_xmit_skb net/core/dev.c:3871 [inline]
 __dev_queue_xmit+0x2021/0x5ac0 net/core/dev.c:4213
 dev_queue_xmit include/linux/netdevice.h:3054 [inline]
 neigh_connected_output+0x569/0x660 net/core/neighbour.c:1612
 neigh_output include/net/neighbour.h:546 [inline]
 ip6_finish_output2+0x2355/0x2ad0 net/ipv6/ip6_output.c:134
 __ip6_finish_output net/ipv6/ip6_output.c:195 [inline]
 ip6_finish_output+0xa0d/0x1230 net/ipv6/ip6_output.c:206
 NF_HOOK_COND include/linux/netfilter.h:291 [inline]
 ip6_output+0x362/0x650 net/ipv6/ip6_output.c:227
 dst_output include/net/dst.h:444 [inline]
 ip6_local_out+0xe9/0x140 net/ipv6/output_core.c:155
 ip6_send_skb+0xb8/0x3a0 net/ipv6/ip6_output.c:1989
 udp_v6_send_skb+0xba6/0x2210 net/ipv6/udp.c:1294
 udpv6_sendmsg+0x404a/0x4450 net/ipv6/udp.c:1588
 inet6_sendmsg+0x105/0x190 net/ipv6/af_inet6.c:651
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg net/socket.c:747 [inline]
 ____sys_sendmsg+0xa24/0xe40 net/socket.c:2501
 ___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2555
 __sys_sendmmsg+0x411/0xa50 net/socket.c:2641
 __do_sys_sendmmsg net/socket.c:2670 [inline]
 __se_sys_sendmmsg net/socket.c:2667 [inline]
 __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2667
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Uninit was created at:
 __alloc_pages+0x9f6/0xe90 mm/page_alloc.c:5615
 alloc_pages+0xab0/0xd80 mm/mempolicy.c:2277
 alloc_slab_page mm/slub.c:1851 [inline]
 allocate_slab mm/slub.c:1998 [inline]
 new_slab+0x425/0x15f0 mm/slub.c:2051
 ___slab_alloc+0x109c/0x32d0 mm/slub.c:3193
 __slab_alloc mm/slub.c:3292 [inline]
 __slab_alloc_node mm/slub.c:3345 [inline]
 slab_alloc_node mm/slub.c:3442 [inline]
 kmem_cache_alloc_node+0x621/0xab0 mm/slub.c:3497
 kmalloc_reserve+0x148/0x470 net/core/skbuff.c:520
 __alloc_skb+0x3a7/0x850 net/core/skbuff.c:606
 skb_copy+0x116/0xa00 net/core/skbuff.c:1876
 mac80211_hwsim_tx_frame_no_nl+0x1a2c/0x2330 drivers/net/wireless/mac80211_hwsim.c:1724
 mac80211_hwsim_tx_frame+0x2d4/0x380 drivers/net/wireless/mac80211_hwsim.c:2053
 mac80211_hwsim_beacon_tx+0x9d0/0xd90 drivers/net/wireless/mac80211_hwsim.c:2116
 __iterate_interfaces+0x40f/0x650 net/mac80211/util.c:766
 ieee80211_iterate_active_interfaces_atomic+0x3c/0x50 net/mac80211/util.c:802
 mac80211_hwsim_beacon+0x11c/0x2f0 drivers/net/wireless/mac80211_hwsim.c:2142
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x583/0x1140 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x22b/0x460 kernel/time/hrtimer.c:1766
 __do_softirq+0x1c9/0x7c5 kernel/softirq.c:571

CPU: 0 PID: 15268 Comm: syz-executor.0 Not tainted 6.3.0-syzkaller-g81af97bdef5e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
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