===================================================== BUG: KMSAN: uninit-value in ip_rcv_core+0xf4c/0x1480 net/ipv4/ip_input.c:477 CPU: 0 PID: 8414 Comm: syz-executor580 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 ip_rcv_core+0xf4c/0x1480 net/ipv4/ip_input.c:477 ip_rcv+0xc7/0x820 net/ipv4/ip_input.c:536 __netif_receive_skb_one_core net/core/dev.c:5384 [inline] __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 process_backlog+0x517/0xbd0 net/core/dev.c:6365 __napi_poll+0x13e/0xca0 net/core/dev.c:6912 napi_poll net/core/dev.c:6979 [inline] net_rx_action+0x726/0x14a0 net/core/dev.c:7065 __do_softirq+0x1b9/0x715 kernel/softirq.c:345 do_softirq+0x123/0x1c0 kernel/softirq.c:248 __local_bh_enable_ip+0xa1/0xb0 kernel/softirq.c:198 local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32 rcu_read_unlock_bh include/linux/rcupdate.h:745 [inline] __dev_queue_xmit+0x3b4a/0x4600 net/core/dev.c:4221 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: 0033:0x443df9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffd1500878 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443df9 RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000f0b5ff R09: 0000000000f0b5ff R10: 00007fffd15002f0 R11: 0000000000000246 R12: 00007fffd15008b0 R13: 00007fffd15008a0 R14: 00007fffd1500890 R15: 0000000000000003 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 iptunnel_xmit+0xbd6/0xf20 net/ipv4/ip_tunnel_core.c:76 udp_tunnel_xmit_skb+0x526/0x640 net/ipv4/udp_tunnel_core.c:174 geneve_xmit_skb drivers/net/geneve.c:959 [inline] geneve_xmit+0x2139/0x3c40 drivers/net/geneve.c:1059 __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 ip_rcv_core+0xf5d/0x1480 net/ipv4/ip_input.c:477 CPU: 0 PID: 8414 Comm: syz-executor580 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 ip_rcv_core+0xf5d/0x1480 net/ipv4/ip_input.c:477 ip_rcv+0xc7/0x820 net/ipv4/ip_input.c:536 __netif_receive_skb_one_core net/core/dev.c:5384 [inline] __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 process_backlog+0x517/0xbd0 net/core/dev.c:6365 __napi_poll+0x13e/0xca0 net/core/dev.c:6912 napi_poll net/core/dev.c:6979 [inline] net_rx_action+0x726/0x14a0 net/core/dev.c:7065 __do_softirq+0x1b9/0x715 kernel/softirq.c:345 do_softirq+0x123/0x1c0 kernel/softirq.c:248 __local_bh_enable_ip+0xa1/0xb0 kernel/softirq.c:198 local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32 rcu_read_unlock_bh include/linux/rcupdate.h:745 [inline] __dev_queue_xmit+0x3b4a/0x4600 net/core/dev.c:4221 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: 0033:0x443df9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffd1500878 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443df9 RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000f0b5ff R09: 0000000000f0b5ff R10: 00007fffd15002f0 R11: 0000000000000246 R12: 00007fffd15008b0 R13: 00007fffd15008a0 R14: 00007fffd1500890 R15: 0000000000000003 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 iptunnel_xmit+0xbd6/0xf20 net/ipv4/ip_tunnel_core.c:76 udp_tunnel_xmit_skb+0x526/0x640 net/ipv4/udp_tunnel_core.c:174 geneve_xmit_skb drivers/net/geneve.c:959 [inline] geneve_xmit+0x2139/0x3c40 drivers/net/geneve.c:1059 __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 ip_rcv_core+0x1068/0x1480 net/ipv4/ip_input.c:486 CPU: 0 PID: 8414 Comm: syz-executor580 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 ip_rcv_core+0x1068/0x1480 net/ipv4/ip_input.c:486 ip_rcv+0xc7/0x820 net/ipv4/ip_input.c:536 __netif_receive_skb_one_core net/core/dev.c:5384 [inline] __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 process_backlog+0x517/0xbd0 net/core/dev.c:6365 __napi_poll+0x13e/0xca0 net/core/dev.c:6912 napi_poll net/core/dev.c:6979 [inline] net_rx_action+0x726/0x14a0 net/core/dev.c:7065 __do_softirq+0x1b9/0x715 kernel/softirq.c:345 do_softirq+0x123/0x1c0 kernel/softirq.c:248 __local_bh_enable_ip+0xa1/0xb0 kernel/softirq.c:198 local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32 rcu_read_unlock_bh include/linux/rcupdate.h:745 [inline] __dev_queue_xmit+0x3b4a/0x4600 net/core/dev.c:4221 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: 0033:0x443df9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffd1500878 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443df9 RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000f0b5ff R09: 0000000000f0b5ff R10: 00007fffd15002f0 R11: 0000000000000246 R12: 00007fffd15008b0 R13: 00007fffd15008a0 R14: 00007fffd1500890 R15: 0000000000000003 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 ip_send_check net/ipv4/ip_output.c:95 [inline] __ip_local_out+0x479/0x840 net/ipv4/ip_output.c:104 ip_local_out+0xa1/0x1e0 net/ipv4/ip_output.c:124 iptunnel_xmit+0x931/0xf20 net/ipv4/ip_tunnel_core.c:82 udp_tunnel_xmit_skb+0x526/0x640 net/ipv4/udp_tunnel_core.c:174 geneve_xmit_skb drivers/net/geneve.c:959 [inline] geneve_xmit+0x2139/0x3c40 drivers/net/geneve.c:1059 __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 iptunnel_xmit+0xbd6/0xf20 net/ipv4/ip_tunnel_core.c:76 udp_tunnel_xmit_skb+0x526/0x640 net/ipv4/udp_tunnel_core.c:174 geneve_xmit_skb drivers/net/geneve.c:959 [inline] geneve_xmit+0x2139/0x3c40 drivers/net/geneve.c:1059 __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 ip_rcv_core+0xf4c/0x1480 net/ipv4/ip_input.c:477 CPU: 0 PID: 8417 Comm: syz-executor580 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 ip_rcv_core+0xf4c/0x1480 net/ipv4/ip_input.c:477 ip_rcv+0xc7/0x820 net/ipv4/ip_input.c:536 __netif_receive_skb_one_core net/core/dev.c:5384 [inline] __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 process_backlog+0x517/0xbd0 net/core/dev.c:6365 __napi_poll+0x13e/0xca0 net/core/dev.c:6912 napi_poll net/core/dev.c:6979 [inline] net_rx_action+0x726/0x14a0 net/core/dev.c:7065 __do_softirq+0x1b9/0x715 kernel/softirq.c:345 do_softirq+0x123/0x1c0 kernel/softirq.c:248 __local_bh_enable_ip+0xa1/0xb0 kernel/softirq.c:198 local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32 rcu_read_unlock_bh include/linux/rcupdate.h:745 [inline] __dev_queue_xmit+0x3b4a/0x4600 net/core/dev.c:4221 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: 0033:0x443df9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffd1500878 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443df9 RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000f0b5ff R09: 0000000000f0b5ff R10: 00007fffd15002f0 R11: 0000000000000246 R12: 00000000000239e4 R13: 00007fffd15008a0 R14: 00007fffd1500890 R15: 00007fffd1500884 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 iptunnel_xmit+0xbd6/0xf20 net/ipv4/ip_tunnel_core.c:76 udp_tunnel_xmit_skb+0x526/0x640 net/ipv4/udp_tunnel_core.c:174 geneve_xmit_skb drivers/net/geneve.c:959 [inline] geneve_xmit+0x2139/0x3c40 drivers/net/geneve.c:1059 __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 ip_rcv_core+0xf5d/0x1480 net/ipv4/ip_input.c:477 CPU: 0 PID: 8417 Comm: syz-executor580 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 ip_rcv_core+0xf5d/0x1480 net/ipv4/ip_input.c:477 ip_rcv+0xc7/0x820 net/ipv4/ip_input.c:536 __netif_receive_skb_one_core net/core/dev.c:5384 [inline] __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 process_backlog+0x517/0xbd0 net/core/dev.c:6365 __napi_poll+0x13e/0xca0 net/core/dev.c:6912 napi_poll net/core/dev.c:6979 [inline] net_rx_action+0x726/0x14a0 net/core/dev.c:7065 __do_softirq+0x1b9/0x715 kernel/softirq.c:345 do_softirq+0x123/0x1c0 kernel/softirq.c:248 __local_bh_enable_ip+0xa1/0xb0 kernel/softirq.c:198 local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32 rcu_read_unlock_bh include/linux/rcupdate.h:745 [inline] __dev_queue_xmit+0x3b4a/0x4600 net/core/dev.c:4221 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: 0033:0x443df9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffd1500878 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443df9 RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000f0b5ff R09: 0000000000f0b5ff R10: 00007fffd15002f0 R11: 0000000000000246 R12: 00000000000239e4 R13: 00007fffd15008a0 R14: 00007fffd1500890 R15: 00007fffd1500884 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 iptunnel_xmit+0xbd6/0xf20 net/ipv4/ip_tunnel_core.c:76 udp_tunnel_xmit_skb+0x526/0x640 net/ipv4/udp_tunnel_core.c:174 geneve_xmit_skb drivers/net/geneve.c:959 [inline] geneve_xmit+0x2139/0x3c40 drivers/net/geneve.c:1059 __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 ip_rcv_core+0x1068/0x1480 net/ipv4/ip_input.c:486 CPU: 0 PID: 8417 Comm: syz-executor580 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 ip_rcv_core+0x1068/0x1480 net/ipv4/ip_input.c:486 ip_rcv+0xc7/0x820 net/ipv4/ip_input.c:536 __netif_receive_skb_one_core net/core/dev.c:5384 [inline] __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 process_backlog+0x517/0xbd0 net/core/dev.c:6365 __napi_poll+0x13e/0xca0 net/core/dev.c:6912 napi_poll net/core/dev.c:6979 [inline] net_rx_action+0x726/0x14a0 net/core/dev.c:7065 __do_softirq+0x1b9/0x715 kernel/softirq.c:345 do_softirq+0x123/0x1c0 kernel/softirq.c:248 __local_bh_enable_ip+0xa1/0xb0 kernel/softirq.c:198 local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32 rcu_read_unlock_bh include/linux/rcupdate.h:745 [inline] __dev_queue_xmit+0x3b4a/0x4600 net/core/dev.c:4221 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: 0033:0x443df9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffd1500878 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443df9 RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000f0b5ff R09: 0000000000f0b5ff R10: 00007fffd15002f0 R11: 0000000000000246 R12: 00000000000239e4 R13: 00007fffd15008a0 R14: 00007fffd1500890 R15: 00007fffd1500884 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 ip_send_check net/ipv4/ip_output.c:95 [inline] __ip_local_out+0x479/0x840 net/ipv4/ip_output.c:104 ip_local_out+0xa1/0x1e0 net/ipv4/ip_output.c:124 iptunnel_xmit+0x931/0xf20 net/ipv4/ip_tunnel_core.c:82 udp_tunnel_xmit_skb+0x526/0x640 net/ipv4/udp_tunnel_core.c:174 geneve_xmit_skb drivers/net/geneve.c:959 [inline] geneve_xmit+0x2139/0x3c40 drivers/net/geneve.c:1059 __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 iptunnel_xmit+0xbd6/0xf20 net/ipv4/ip_tunnel_core.c:76 udp_tunnel_xmit_skb+0x526/0x640 net/ipv4/udp_tunnel_core.c:174 geneve_xmit_skb drivers/net/geneve.c:959 [inline] geneve_xmit+0x2139/0x3c40 drivers/net/geneve.c:1059 __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 ip_rcv_core+0xf4c/0x1480 net/ipv4/ip_input.c:477 CPU: 0 PID: 8421 Comm: syz-executor580 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 ip_rcv_core+0xf4c/0x1480 net/ipv4/ip_input.c:477 ip_rcv+0xc7/0x820 net/ipv4/ip_input.c:536 __netif_receive_skb_one_core net/core/dev.c:5384 [inline] __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 process_backlog+0x517/0xbd0 net/core/dev.c:6365 __napi_poll+0x13e/0xca0 net/core/dev.c:6912 napi_poll net/core/dev.c:6979 [inline] net_rx_action+0x726/0x14a0 net/core/dev.c:7065 __do_softirq+0x1b9/0x715 kernel/softirq.c:345 do_softirq+0x123/0x1c0 kernel/softirq.c:248 __local_bh_enable_ip+0xa1/0xb0 kernel/softirq.c:198 local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32 rcu_read_unlock_bh include/linux/rcupdate.h:745 [inline] __dev_queue_xmit+0x3b4a/0x4600 net/core/dev.c:4221 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: 0033:0x443df9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffd1500878 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443df9 RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000f0b5ff R09: 0000000000f0b5ff R10: 00007fffd15002f0 R11: 0000000000000246 R12: 0000000000025334 R13: 00007fffd15008a0 R14: 00007fffd1500890 R15: 00007fffd1500884 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 iptunnel_xmit+0xbd6/0xf20 net/ipv4/ip_tunnel_core.c:76 udp_tunnel_xmit_skb+0x526/0x640 net/ipv4/udp_tunnel_core.c:174 geneve_xmit_skb drivers/net/geneve.c:959 [inline] geneve_xmit+0x2139/0x3c40 drivers/net/geneve.c:1059 __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 ip_rcv_core+0xf5d/0x1480 net/ipv4/ip_input.c:477 CPU: 0 PID: 8421 Comm: syz-executor580 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 ip_rcv_core+0xf5d/0x1480 net/ipv4/ip_input.c:477 ip_rcv+0xc7/0x820 net/ipv4/ip_input.c:536 __netif_receive_skb_one_core net/core/dev.c:5384 [inline] __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 process_backlog+0x517/0xbd0 net/core/dev.c:6365 __napi_poll+0x13e/0xca0 net/core/dev.c:6912 napi_poll net/core/dev.c:6979 [inline] net_rx_action+0x726/0x14a0 net/core/dev.c:7065 __do_softirq+0x1b9/0x715 kernel/softirq.c:345 do_softirq+0x123/0x1c0 kernel/softirq.c:248 __local_bh_enable_ip+0xa1/0xb0 kernel/softirq.c:198 local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32 rcu_read_unlock_bh include/linux/rcupdate.h:745 [inline] __dev_queue_xmit+0x3b4a/0x4600 net/core/dev.c:4221 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: 0033:0x443df9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffd1500878 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443df9 RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000f0b5ff R09: 0000000000f0b5ff R10: 00007fffd15002f0 R11: 0000000000000246 R12: 0000000000025334 R13: 00007fffd15008a0 R14: 00007fffd1500890 R15: 00007fffd1500884 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 iptunnel_xmit+0xbd6/0xf20 net/ipv4/ip_tunnel_core.c:76 udp_tunnel_xmit_skb+0x526/0x640 net/ipv4/udp_tunnel_core.c:174 geneve_xmit_skb drivers/net/geneve.c:959 [inline] geneve_xmit+0x2139/0x3c40 drivers/net/geneve.c:1059 __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 ip_rcv_core+0x1068/0x1480 net/ipv4/ip_input.c:486 CPU: 0 PID: 8421 Comm: syz-executor580 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 ip_rcv_core+0x1068/0x1480 net/ipv4/ip_input.c:486 ip_rcv+0xc7/0x820 net/ipv4/ip_input.c:536 __netif_receive_skb_one_core net/core/dev.c:5384 [inline] __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 process_backlog+0x517/0xbd0 net/core/dev.c:6365 __napi_poll+0x13e/0xca0 net/core/dev.c:6912 napi_poll net/core/dev.c:6979 [inline] net_rx_action+0x726/0x14a0 net/core/dev.c:7065 __do_softirq+0x1b9/0x715 kernel/softirq.c:345 do_softirq+0x123/0x1c0 kernel/softirq.c:248 __local_bh_enable_ip+0xa1/0xb0 kernel/softirq.c:198 local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32 rcu_read_unlock_bh include/linux/rcupdate.h:745 [inline] __dev_queue_xmit+0x3b4a/0x4600 net/core/dev.c:4221 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: 0033:0x443df9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffd1500878 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443df9 RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000f0b5ff R09: 0000000000f0b5ff R10: 00007fffd15002f0 R11: 0000000000000246 R12: 0000000000025334 R13: 00007fffd15008a0 R14: 00007fffd1500890 R15: 00007fffd1500884 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 ip_send_check net/ipv4/ip_output.c:95 [inline] __ip_local_out+0x479/0x840 net/ipv4/ip_output.c:104 ip_local_out+0xa1/0x1e0 net/ipv4/ip_output.c:124 iptunnel_xmit+0x931/0xf20 net/ipv4/ip_tunnel_core.c:82 udp_tunnel_xmit_skb+0x526/0x640 net/ipv4/udp_tunnel_core.c:174 geneve_xmit_skb drivers/net/geneve.c:959 [inline] geneve_xmit+0x2139/0x3c40 drivers/net/geneve.c:1059 __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 iptunnel_xmit+0xbd6/0xf20 net/ipv4/ip_tunnel_core.c:76 udp_tunnel_xmit_skb+0x526/0x640 net/ipv4/udp_tunnel_core.c:174 geneve_xmit_skb drivers/net/geneve.c:959 [inline] geneve_xmit+0x2139/0x3c40 drivers/net/geneve.c:1059 __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 ip_rcv_core+0xf4c/0x1480 net/ipv4/ip_input.c:477 CPU: 0 PID: 8422 Comm: syz-executor580 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 ip_rcv_core+0xf4c/0x1480 net/ipv4/ip_input.c:477 ip_rcv+0xc7/0x820 net/ipv4/ip_input.c:536 __netif_receive_skb_one_core net/core/dev.c:5384 [inline] __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 process_backlog+0x517/0xbd0 net/core/dev.c:6365 __napi_poll+0x13e/0xca0 net/core/dev.c:6912 napi_poll net/core/dev.c:6979 [inline] net_rx_action+0x726/0x14a0 net/core/dev.c:7065 __do_softirq+0x1b9/0x715 kernel/softirq.c:345 do_softirq+0x123/0x1c0 kernel/softirq.c:248 __local_bh_enable_ip+0xa1/0xb0 kernel/softirq.c:198 local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32 rcu_read_unlock_bh include/linux/rcupdate.h:745 [inline] __dev_queue_xmit+0x3b4a/0x4600 net/core/dev.c:4221 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: 0033:0x443df9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffd1500878 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443df9 RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000f0b5ff R09: 0000000000f0b5ff R10: 00007fffd15002f0 R11: 0000000000000246 R12: 000000000002594c R13: 00007fffd15008a0 R14: 00007fffd1500890 R15: 00007fffd1500884 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 iptunnel_xmit+0xbd6/0xf20 net/ipv4/ip_tunnel_core.c:76 udp_tunnel_xmit_skb+0x526/0x640 net/ipv4/udp_tunnel_core.c:174 geneve_xmit_skb drivers/net/geneve.c:959 [inline] geneve_xmit+0x2139/0x3c40 drivers/net/geneve.c:1059 __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