=====================================================
BUG: KMSAN: uninit-value in ip6t_mangle_out net/ipv6/netfilter/ip6table_mangle.c:54 [inline]
BUG: KMSAN: uninit-value in ip6table_mangle_hook+0xd59/0xd80 net/ipv6/netfilter/ip6table_mangle.c:74
CPU: 0 PID: 11043 Comm: syz-executor.0 Not tainted 5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x24c/0x2e0 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 ip6t_mangle_out net/ipv6/netfilter/ip6table_mangle.c:54 [inline]
 ip6table_mangle_hook+0xd59/0xd80 net/ipv6/netfilter/ip6table_mangle.c:74
 nf_hook_entry_hookfn include/linux/netfilter.h:136 [inline]
 nf_hook_slow+0x17b/0x460 net/netfilter/core.c:589
 nf_hook include/linux/netfilter.h:256 [inline]
 __ip6_local_out+0x717/0x7e0 net/ipv6/output_core.c:167
 ip6_local_out+0xa1/0x1e0 net/ipv6/output_core.c:177
 ip6tunnel_xmit include/net/ip6_tunnel.h:160 [inline]
 udp_tunnel6_xmit_skb+0x82d/0xf50 net/ipv6/ip6_udp_tunnel.c:109
 geneve6_xmit_skb drivers/net/geneve.c:1027 [inline]
 geneve_xmit+0x338e/0x3c40 drivers/net/geneve.c:1056
 __netdev_start_xmit include/linux/netdevice.h:4825 [inline]
 netdev_start_xmit include/linux/netdevice.h:4839 [inline]
 xmit_one+0x2b6/0x760 net/core/dev.c:3605
 dev_hard_start_xmit net/core/dev.c:3621 [inline]
 __dev_queue_xmit+0x3432/0x4600 net/core/dev.c:4194
 dev_queue_xmit+0x4b/0x60 net/core/dev.c:4227
 packet_snd net/packet/af_packet.c:3006 [inline]
 packet_sendmsg+0x86ee/0x99d0 net/packet/af_packet.c:3031
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg net/socket.c:674 [inline]
 ____sys_sendmsg+0xcfc/0x12f0 net/socket.c:2350
 ___sys_sendmsg net/socket.c:2404 [inline]
 __sys_sendmsg+0x714/0x830 net/socket.c:2433
 __do_sys_sendmsg net/socket.c:2442 [inline]
 __se_sys_sendmsg+0x97/0xb0 net/socket.c:2440
 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2440
 do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665f9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1ff2790188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665f9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003
RBP: 00000000004bfbb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 0000000000a9fb1f R14: 00007f1ff2790300 R15: 0000000000022000

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline]
 kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289
 __msan_chain_origin+0x54/0xa0 mm/kmsan/kmsan_instr.c:147
 ip6_flow_hdr include/net/ipv6.h:941 [inline]
 udp_tunnel6_xmit_skb+0xc09/0xf50 net/ipv6/ip6_udp_tunnel.c:102
 geneve6_xmit_skb drivers/net/geneve.c:1027 [inline]
 geneve_xmit+0x338e/0x3c40 drivers/net/geneve.c:1056
 __netdev_start_xmit include/linux/netdevice.h:4825 [inline]
 netdev_start_xmit include/linux/netdevice.h:4839 [inline]
 xmit_one+0x2b6/0x760 net/core/dev.c:3605
 dev_hard_start_xmit net/core/dev.c:3621 [inline]
 __dev_queue_xmit+0x3432/0x4600 net/core/dev.c:4194
 dev_queue_xmit+0x4b/0x60 net/core/dev.c:4227
 packet_snd net/packet/af_packet.c:3006 [inline]
 packet_sendmsg+0x86ee/0x99d0 net/packet/af_packet.c:3031
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg net/socket.c:674 [inline]
 ____sys_sendmsg+0xcfc/0x12f0 net/socket.c:2350
 ___sys_sendmsg net/socket.c:2404 [inline]
 __sys_sendmsg+0x714/0x830 net/socket.c:2433
 __do_sys_sendmsg net/socket.c:2442 [inline]
 __se_sys_sendmsg+0x97/0xb0 net/socket.c:2440
 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2440
 do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Uninit was created at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline]
 kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:104
 kmsan_slab_alloc+0x8e/0xe0 mm/kmsan/kmsan_hooks.c:76
 slab_alloc_node mm/slub.c:2922 [inline]
 __kmalloc_node_track_caller+0xa4f/0x1470 mm/slub.c:4609
 kmalloc_reserve net/core/skbuff.c:353 [inline]
 __alloc_skb+0x4dd/0xe90 net/core/skbuff.c:424
 alloc_skb include/linux/skbuff.h:1103 [inline]
 alloc_skb_with_frags+0x1f3/0xc10 net/core/skbuff.c:5948
 sock_alloc_send_pskb+0xdc1/0xf90 net/core/sock.c:2362
 packet_alloc_skb net/packet/af_packet.c:2854 [inline]
 packet_snd net/packet/af_packet.c:2949 [inline]
 packet_sendmsg+0x6a12/0x99d0 net/packet/af_packet.c:3031
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg net/socket.c:674 [inline]
 ____sys_sendmsg+0xcfc/0x12f0 net/socket.c:2350
 ___sys_sendmsg net/socket.c:2404 [inline]
 __sys_sendmsg+0x714/0x830 net/socket.c:2433
 __do_sys_sendmsg net/socket.c:2442 [inline]
 __se_sys_sendmsg+0x97/0xb0 net/socket.c:2440
 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2440
 do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xae
=====================================================
=====================================================
BUG: KMSAN: uninit-value in __skb_checksum_complete+0x421/0x630 net/core/skbuff.c:2906
CPU: 0 PID: 11043 Comm: syz-executor.0 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x24c/0x2e0 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 __skb_checksum_complete+0x421/0x630 net/core/skbuff.c:2906
 nf_ip6_checksum+0x529/0x6a0 net/netfilter/utils.c:91
 nf_nat_icmpv6_reply_translation+0x312/0x1350 net/netfilter/nf_nat_proto.c:817
 nf_nat_ipv6_fn+0x3bf/0x570 net/netfilter/nf_nat_proto.c:890
 nf_nat_ipv6_local_fn+0xad/0x870 net/netfilter/nf_nat_proto.c:963
 nf_hook_entry_hookfn include/linux/netfilter.h:136 [inline]
 nf_hook_slow+0x17b/0x460 net/netfilter/core.c:589
 nf_hook include/linux/netfilter.h:256 [inline]
 __ip6_local_out+0x717/0x7e0 net/ipv6/output_core.c:167
 ip6_local_out+0xa1/0x1e0 net/ipv6/output_core.c:177
 ip6_send_skb net/ipv6/ip6_output.c:1904 [inline]
 ip6_push_pending_frames+0x243/0x570 net/ipv6/ip6_output.c:1924
 icmpv6_push_pending_frames+0x6e4/0x720 net/ipv6/icmp.c:310
 icmp6_send+0x38cc/0x40d0 net/ipv6/icmp.c:626
 __icmpv6_send include/linux/icmpv6.h:28 [inline]
 icmpv6_send include/linux/icmpv6.h:49 [inline]
 ip6_pkt_drop+0x926/0xa20 net/ipv6/route.c:4396
 ip6_pkt_discard_out+0xbb/0x130 net/ipv6/route.c:4409
 dst_output include/net/dst.h:448 [inline]
 ip6_local_out+0x17b/0x1e0 net/ipv6/output_core.c:179
 ip6tunnel_xmit include/net/ip6_tunnel.h:160 [inline]
 udp_tunnel6_xmit_skb+0x82d/0xf50 net/ipv6/ip6_udp_tunnel.c:109
 geneve6_xmit_skb drivers/net/geneve.c:1027 [inline]
 geneve_xmit+0x338e/0x3c40 drivers/net/geneve.c:1056
 __netdev_start_xmit include/linux/netdevice.h:4825 [inline]
 netdev_start_xmit include/linux/netdevice.h:4839 [inline]
 xmit_one+0x2b6/0x760 net/core/dev.c:3605
 dev_hard_start_xmit net/core/dev.c:3621 [inline]
 __dev_queue_xmit+0x3432/0x4600 net/core/dev.c:4194
 dev_queue_xmit+0x4b/0x60 net/core/dev.c:4227
 packet_snd net/packet/af_packet.c:3006 [inline]
 packet_sendmsg+0x86ee/0x99d0 net/packet/af_packet.c:3031
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg net/socket.c:674 [inline]
 ____sys_sendmsg+0xcfc/0x12f0 net/socket.c:2350
 ___sys_sendmsg net/socket.c:2404 [inline]
 __sys_sendmsg+0x714/0x830 net/socket.c:2433
 __do_sys_sendmsg net/socket.c:2442 [inline]
 __se_sys_sendmsg+0x97/0xb0 net/socket.c:2440
 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2440
 do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665f9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1ff2790188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665f9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003
RBP: 00000000004bfbb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 0000000000a9fb1f R14: 00007f1ff2790300 R15: 0000000000022000

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline]
 kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289
 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226
 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:246
 __msan_memcpy+0x46/0x60 mm/kmsan/kmsan_instr.c:110
 csum_partial_copy_nocheck include/net/checksum.h:51 [inline]
 skb_copy_and_csum_bits+0x251/0x1430 net/core/skbuff.c:2793
 icmpv6_getfrag+0x13e/0x3b0 net/ipv6/icmp.c:325
 __ip6_append_data+0x5e8f/0x74d0 net/ipv6/ip6_output.c:1663
 ip6_append_data+0x44b/0x6e0 net/ipv6/ip6_output.c:1796
 icmp6_send+0x3673/0x40d0 net/ipv6/icmp.c:618
 __icmpv6_send include/linux/icmpv6.h:28 [inline]
 icmpv6_send include/linux/icmpv6.h:49 [inline]
 ip6_pkt_drop+0x926/0xa20 net/ipv6/route.c:4396
 ip6_pkt_discard_out+0xbb/0x130 net/ipv6/route.c:4409
 dst_output include/net/dst.h:448 [inline]
 ip6_local_out+0x17b/0x1e0 net/ipv6/output_core.c:179
 ip6tunnel_xmit include/net/ip6_tunnel.h:160 [inline]
 udp_tunnel6_xmit_skb+0x82d/0xf50 net/ipv6/ip6_udp_tunnel.c:109
 geneve6_xmit_skb drivers/net/geneve.c:1027 [inline]
 geneve_xmit+0x338e/0x3c40 drivers/net/geneve.c:1056
 __netdev_start_xmit include/linux/netdevice.h:4825 [inline]
 netdev_start_xmit include/linux/netdevice.h:4839 [inline]
 xmit_one+0x2b6/0x760 net/core/dev.c:3605
 dev_hard_start_xmit net/core/dev.c:3621 [inline]
 __dev_queue_xmit+0x3432/0x4600 net/core/dev.c:4194
 dev_queue_xmit+0x4b/0x60 net/core/dev.c:4227
 packet_snd net/packet/af_packet.c:3006 [inline]
 packet_sendmsg+0x86ee/0x99d0 net/packet/af_packet.c:3031
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg net/socket.c:674 [inline]
 ____sys_sendmsg+0xcfc/0x12f0 net/socket.c:2350
 ___sys_sendmsg net/socket.c:2404 [inline]
 __sys_sendmsg+0x714/0x830 net/socket.c:2433
 __do_sys_sendmsg net/socket.c:2442 [inline]
 __se_sys_sendmsg+0x97/0xb0 net/socket.c:2440
 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2440
 do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline]
 kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289
 __msan_chain_origin+0x54/0xa0 mm/kmsan/kmsan_instr.c:147
 ip6_flow_hdr include/net/ipv6.h:941 [inline]
 udp_tunnel6_xmit_skb+0xc09/0xf50 net/ipv6/ip6_udp_tunnel.c:102
 geneve6_xmit_skb drivers/net/geneve.c:1027 [inline]
 geneve_xmit+0x338e/0x3c40 drivers/net/geneve.c:1056
 __netdev_start_xmit include/linux/netdevice.h:4825 [inline]
 netdev_start_xmit include/linux/netdevice.h:4839 [inline]
 xmit_one+0x2b6/0x760 net/core/dev.c:3605
 dev_hard_start_xmit net/core/dev.c:3621 [inline]
 __dev_queue_xmit+0x3432/0x4600 net/core/dev.c:4194
 dev_queue_xmit+0x4b/0x60 net/core/dev.c:4227
 packet_snd net/packet/af_packet.c:3006 [inline]
 packet_sendmsg+0x86ee/0x99d0 net/packet/af_packet.c:3031
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg net/socket.c:674 [inline]
 ____sys_sendmsg+0xcfc/0x12f0 net/socket.c:2350
 ___sys_sendmsg net/socket.c:2404 [inline]
 __sys_sendmsg+0x714/0x830 net/socket.c:2433
 __do_sys_sendmsg net/socket.c:2442 [inline]
 __se_sys_sendmsg+0x97/0xb0 net/socket.c:2440
 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2440
 do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Uninit was created at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline]
 kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:104
 kmsan_slab_alloc+0x8e/0xe0 mm/kmsan/kmsan_hooks.c:76
 slab_alloc_node mm/slub.c:2922 [inline]
 __kmalloc_node_track_caller+0xa4f/0x1470 mm/slub.c:4609
 kmalloc_reserve net/core/skbuff.c:353 [inline]
 __alloc_skb+0x4dd/0xe90 net/core/skbuff.c:424
 alloc_skb include/linux/skbuff.h:1103 [inline]
 alloc_skb_with_frags+0x1f3/0xc10 net/core/skbuff.c:5948
 sock_alloc_send_pskb+0xdc1/0xf90 net/core/sock.c:2362
 packet_alloc_skb net/packet/af_packet.c:2854 [inline]
 packet_snd net/packet/af_packet.c:2949 [inline]
 packet_sendmsg+0x6a12/0x99d0 net/packet/af_packet.c:3031
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg net/socket.c:674 [inline]
 ____sys_sendmsg+0xcfc/0x12f0 net/socket.c:2350
 ___sys_sendmsg net/socket.c:2404 [inline]
 __sys_sendmsg+0x714/0x830 net/socket.c:2433
 __do_sys_sendmsg net/socket.c:2442 [inline]
 __se_sys_sendmsg+0x97/0xb0 net/socket.c:2440
 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2440
 do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xae
=====================================================
=====================================================
BUG: KMSAN: uninit-value in nf_nat_icmpv6_reply_translation+0x39f/0x1350 net/netfilter/nf_nat_proto.c:817
CPU: 0 PID: 11043 Comm: syz-executor.0 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x24c/0x2e0 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 nf_nat_icmpv6_reply_translation+0x39f/0x1350 net/netfilter/nf_nat_proto.c:817
 nf_nat_ipv6_fn+0x3bf/0x570 net/netfilter/nf_nat_proto.c:890
 nf_nat_ipv6_local_fn+0xad/0x870 net/netfilter/nf_nat_proto.c:963
 nf_hook_entry_hookfn include/linux/netfilter.h:136 [inline]
 nf_hook_slow+0x17b/0x460 net/netfilter/core.c:589
 nf_hook include/linux/netfilter.h:256 [inline]
 __ip6_local_out+0x717/0x7e0 net/ipv6/output_core.c:167
 ip6_local_out+0xa1/0x1e0 net/ipv6/output_core.c:177
 ip6_send_skb net/ipv6/ip6_output.c:1904 [inline]
 ip6_push_pending_frames+0x243/0x570 net/ipv6/ip6_output.c:1924
 icmpv6_push_pending_frames+0x6e4/0x720 net/ipv6/icmp.c:310
 icmp6_send+0x38cc/0x40d0 net/ipv6/icmp.c:626
 __icmpv6_send include/linux/icmpv6.h:28 [inline]
 icmpv6_send include/linux/icmpv6.h:49 [inline]
 ip6_pkt_drop+0x926/0xa20 net/ipv6/route.c:4396
 ip6_pkt_discard_out+0xbb/0x130 net/ipv6/route.c:4409
 dst_output include/net/dst.h:448 [inline]
 ip6_local_out+0x17b/0x1e0 net/ipv6/output_core.c:179
 ip6tunnel_xmit include/net/ip6_tunnel.h:160 [inline]
 udp_tunnel6_xmit_skb+0x82d/0xf50 net/ipv6/ip6_udp_tunnel.c:109
 geneve6_xmit_skb drivers/net/geneve.c:1027 [inline]
 geneve_xmit+0x338e/0x3c40 drivers/net/geneve.c:1056
 __netdev_start_xmit include/linux/netdevice.h:4825 [inline]
 netdev_start_xmit include/linux/netdevice.h:4839 [inline]
 xmit_one+0x2b6/0x760 net/core/dev.c:3605
 dev_hard_start_xmit net/core/dev.c:3621 [inline]
 __dev_queue_xmit+0x3432/0x4600 net/core/dev.c:4194
 dev_queue_xmit+0x4b/0x60 net/core/dev.c:4227
 packet_snd net/packet/af_packet.c:3006 [inline]
 packet_sendmsg+0x86ee/0x99d0 net/packet/af_packet.c:3031
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg net/socket.c:674 [inline]
 ____sys_sendmsg+0xcfc/0x12f0 net/socket.c:2350
 ___sys_sendmsg net/socket.c:2404 [inline]
 __sys_sendmsg+0x714/0x830 net/socket.c:2433
 __do_sys_sendmsg net/socket.c:2442 [inline]
 __se_sys_sendmsg+0x97/0xb0 net/socket.c:2440
 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2440
 do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665f9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1ff2790188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665f9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003
RBP: 00000000004bfbb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 0000000000a9fb1f R14: 00007f1ff2790300 R15: 0000000000022000

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline]
 kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289
 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226
 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:246
 __msan_memcpy+0x46/0x60 mm/kmsan/kmsan_instr.c:110
 csum_partial_copy_nocheck include/net/checksum.h:51 [inline]
 skb_copy_and_csum_bits+0x251/0x1430 net/core/skbuff.c:2793
 icmpv6_getfrag+0x13e/0x3b0 net/ipv6/icmp.c:325
 __ip6_append_data+0x5e8f/0x74d0 net/ipv6/ip6_output.c:1663
 ip6_append_data+0x44b/0x6e0 net/ipv6/ip6_output.c:1796
 icmp6_send+0x3673/0x40d0 net/ipv6/icmp.c:618
 __icmpv6_send include/linux/icmpv6.h:28 [inline]
 icmpv6_send include/linux/icmpv6.h:49 [inline]
 ip6_pkt_drop+0x926/0xa20 net/ipv6/route.c:4396
 ip6_pkt_discard_out+0xbb/0x130 net/ipv6/route.c:4409
 dst_output include/net/dst.h:448 [inline]
 ip6_local_out+0x17b/0x1e0 net/ipv6/output_core.c:179
 ip6tunnel_xmit include/net/ip6_tunnel.h:160 [inline]
 udp_tunnel6_xmit_skb+0x82d/0xf50 net/ipv6/ip6_udp_tunnel.c:109
 geneve6_xmit_skb drivers/net/geneve.c:1027 [inline]
 geneve_xmit+0x338e/0x3c40 drivers/net/geneve.c:1056
 __netdev_start_xmit include/linux/netdevice.h:4825 [inline]
 netdev_start_xmit include/linux/netdevice.h:4839 [inline]
 xmit_one+0x2b6/0x760 net/core/dev.c:3605
 dev_hard_start_xmit net/core/dev.c:3621 [inline]
 __dev_queue_xmit+0x3432/0x4600 net/core/dev.c:4194
 dev_queue_xmit+0x4b/0x60 net/core/dev.c:4227
 packet_snd net/packet/af_packet.c:3006 [inline]
 packet_sendmsg+0x86ee/0x99d0 net/packet/af_packet.c:3031
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg net/socket.c:674 [inline]
 ____sys_sendmsg+0xcfc/0x12f0 net/socket.c:2350
 ___sys_sendmsg net/socket.c:2404 [inline]
 __sys_sendmsg+0x714/0x830 net/socket.c:2433
 __do_sys_sendmsg net/socket.c:2442 [inline]
 __se_sys_sendmsg+0x97/0xb0 net/socket.c:2440
 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2440
 do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline]
 kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289
 __msan_chain_origin+0x54/0xa0 mm/kmsan/kmsan_instr.c:147
 ip6_flow_hdr include/net/ipv6.h:941 [inline]
 udp_tunnel6_xmit_skb+0xc09/0xf50 net/ipv6/ip6_udp_tunnel.c:102
 geneve6_xmit_skb drivers/net/geneve.c:1027 [inline]
 geneve_xmit+0x338e/0x3c40 drivers/net/geneve.c:1056
 __netdev_start_xmit include/linux/netdevice.h:4825 [inline]
 netdev_start_xmit include/linux/netdevice.h:4839 [inline]
 xmit_one+0x2b6/0x760 net/core/dev.c:3605
 dev_hard_start_xmit net/core/dev.c:3621 [inline]
 __dev_queue_xmit+0x3432/0x4600 net/core/dev.c:4194
 dev_queue_xmit+0x4b/0x60 net/core/dev.c:4227
 packet_snd net/packet/af_packet.c:3006 [inline]
 packet_sendmsg+0x86ee/0x99d0 net/packet/af_packet.c:3031
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg net/socket.c:674 [inline]
 ____sys_sendmsg+0xcfc/0x12f0 net/socket.c:2350
 ___sys_sendmsg net/socket.c:2404 [inline]
 __sys_sendmsg+0x714/0x830 net/socket.c:2433
 __do_sys_sendmsg net/socket.c:2442 [inline]
 __se_sys_sendmsg+0x97/0xb0 net/socket.c:2440
 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2440
 do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Uninit was created at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline]
 kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:104
 kmsan_slab_alloc+0x8e/0xe0 mm/kmsan/kmsan_hooks.c:76
 slab_alloc_node mm/slub.c:2922 [inline]
 __kmalloc_node_track_caller+0xa4f/0x1470 mm/slub.c:4609
 kmalloc_reserve net/core/skbuff.c:353 [inline]
 __alloc_skb+0x4dd/0xe90 net/core/skbuff.c:424
 alloc_skb include/linux/skbuff.h:1103 [inline]
 alloc_skb_with_frags+0x1f3/0xc10 net/core/skbuff.c:5948
 sock_alloc_send_pskb+0xdc1/0xf90 net/core/sock.c:2362
 packet_alloc_skb net/packet/af_packet.c:2854 [inline]
 packet_snd net/packet/af_packet.c:2949 [inline]
 packet_sendmsg+0x6a12/0x99d0 net/packet/af_packet.c:3031
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg net/socket.c:674 [inline]
 ____sys_sendmsg+0xcfc/0x12f0 net/socket.c:2350
 ___sys_sendmsg net/socket.c:2404 [inline]
 __sys_sendmsg+0x714/0x830 net/socket.c:2433
 __do_sys_sendmsg net/socket.c:2442 [inline]
 __se_sys_sendmsg+0x97/0xb0 net/socket.c:2440
 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2440
 do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xae
=====================================================