===================================================== BUG: KMSAN: uninit-value in eth_type_trans+0x62b/0x810 net/ethernet/eth.c:169 eth_type_trans+0x62b/0x810 net/ethernet/eth.c:169 ip_tunnel_rcv+0x2bdc/0x32e0 net/ipv4/ip_tunnel.c:437 erspan_rcv net/ipv4/ip_gre.c:346 [inline] gre_rcv+0x17da/0x1d20 net/ipv4/ip_gre.c:447 gre_rcv+0x2a8/0x390 net/ipv4/gre_demux.c:163 ip_protocol_deliver_rcu+0xb4e/0x13d0 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x332/0x500 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:314 [inline] ip_local_deliver+0x21f/0x490 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:460 [inline] ip_rcv_finish+0x4a2/0x520 net/ipv4/ip_input.c:449 NF_HOOK include/linux/netfilter.h:314 [inline] ip_rcv+0xcd/0x380 net/ipv4/ip_input.c:569 __netif_receive_skb_one_core net/core/dev.c:5544 [inline] __netif_receive_skb+0x319/0xa00 net/core/dev.c:5658 process_backlog+0x480/0x8b0 net/core/dev.c:5987 __napi_poll+0xe7/0x980 net/core/dev.c:6638 napi_poll net/core/dev.c:6707 [inline] net_rx_action+0x89d/0x1820 net/core/dev.c:6822 __do_softirq+0x1c0/0x7d7 kernel/softirq.c:554 do_softirq+0x9a/0x100 kernel/softirq.c:455 __local_bh_enable_ip+0x9f/0xb0 kernel/softirq.c:382 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:851 [inline] __dev_queue_xmit+0x260c/0x5350 net/core/dev.c:4368 dev_queue_xmit include/linux/netdevice.h:3091 [inline] neigh_resolve_output+0x9c9/0xae0 net/core/neighbour.c:1563 neigh_output include/net/neighbour.h:542 [inline] ip_finish_output2+0x1907/0x1b70 net/ipv4/ip_output.c:235 __ip_finish_output+0x287/0x810 ip_finish_output+0x4b/0x550 net/ipv4/ip_output.c:323 NF_HOOK_COND include/linux/netfilter.h:303 [inline] ip_mc_output+0x609/0xd50 net/ipv4/ip_output.c:420 dst_output include/net/dst.h:450 [inline] ip_local_out net/ipv4/ip_output.c:129 [inline] __ip_queue_xmit+0x2017/0x2030 net/ipv4/ip_output.c:535 sctp_v4_xmit+0x6a2/0xea0 net/sctp/protocol.c:1075 sctp_packet_transmit+0x3fff/0x4310 net/sctp/output.c:653 sctp_packet_singleton+0x342/0x440 net/sctp/outqueue.c:783 sctp_outq_flush_ctrl net/sctp/outqueue.c:914 [inline] sctp_outq_flush+0x77c/0x6590 net/sctp/outqueue.c:1212 sctp_outq_uncork+0x9c/0xb0 net/sctp/outqueue.c:764 sctp_side_effects net/sctp/sm_sideeffect.c:1198 [inline] sctp_do_sm+0x8c49/0x93d0 net/sctp/sm_sideeffect.c:1169 sctp_primitive_ASSOCIATE+0xc3/0x100 net/sctp/primitive.c:73 sctp_sendmsg_to_asoc+0x179f/0x1f00 net/sctp/socket.c:1841 sctp_sendmsg+0x32b9/0x4a80 net/sctp/socket.c:2031 inet_sendmsg+0x25a/0x280 net/ipv4/af_inet.c:851 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x267/0x380 net/socket.c:745 ____sys_sendmsg+0x877/0xb60 net/socket.c:2584 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638 __sys_sendmsg net/socket.c:2667 [inline] __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __x64_sys_sendmsg+0x307/0x4a0 net/socket.c:2674 x64_sys_call+0xc4b/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: pskb_expand_head+0x30f/0x19d0 net/core/skbuff.c:2253 __skb_cow include/linux/skbuff.h:3676 [inline] skb_cow_head include/linux/skbuff.h:3710 [inline] erspan_xmit+0xb08/0x1ec0 net/ipv4/ip_gre.c:697 __netdev_start_xmit include/linux/netdevice.h:4903 [inline] netdev_start_xmit include/linux/netdevice.h:4917 [inline] xmit_one net/core/dev.c:3531 [inline] dev_hard_start_xmit+0x247/0xa20 net/core/dev.c:3547 sch_direct_xmit+0x3c5/0xd50 net/sched/sch_generic.c:343 __dev_xmit_skb net/core/dev.c:3760 [inline] __dev_queue_xmit+0x2eec/0x5350 net/core/dev.c:4307 dev_queue_xmit include/linux/netdevice.h:3091 [inline] neigh_resolve_output+0x9c9/0xae0 net/core/neighbour.c:1563 neigh_output include/net/neighbour.h:542 [inline] ip_finish_output2+0x1907/0x1b70 net/ipv4/ip_output.c:235 __ip_finish_output+0x287/0x810 ip_finish_output+0x4b/0x550 net/ipv4/ip_output.c:323 NF_HOOK_COND include/linux/netfilter.h:303 [inline] ip_mc_output+0x609/0xd50 net/ipv4/ip_output.c:420 dst_output include/net/dst.h:450 [inline] ip_local_out net/ipv4/ip_output.c:129 [inline] __ip_queue_xmit+0x2017/0x2030 net/ipv4/ip_output.c:535 sctp_v4_xmit+0x6a2/0xea0 net/sctp/protocol.c:1075 sctp_packet_transmit+0x3fff/0x4310 net/sctp/output.c:653 sctp_packet_singleton+0x342/0x440 net/sctp/outqueue.c:783 sctp_outq_flush_ctrl net/sctp/outqueue.c:914 [inline] sctp_outq_flush+0x77c/0x6590 net/sctp/outqueue.c:1212 sctp_outq_uncork+0x9c/0xb0 net/sctp/outqueue.c:764 sctp_side_effects net/sctp/sm_sideeffect.c:1198 [inline] sctp_do_sm+0x8c49/0x93d0 net/sctp/sm_sideeffect.c:1169 sctp_primitive_ASSOCIATE+0xc3/0x100 net/sctp/primitive.c:73 sctp_sendmsg_to_asoc+0x179f/0x1f00 net/sctp/socket.c:1841 sctp_sendmsg+0x32b9/0x4a80 net/sctp/socket.c:2031 inet_sendmsg+0x25a/0x280 net/ipv4/af_inet.c:851 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x267/0x380 net/socket.c:745 ____sys_sendmsg+0x877/0xb60 net/socket.c:2584 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638 __sys_sendmsg net/socket.c:2667 [inline] __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __x64_sys_sendmsg+0x307/0x4a0 net/socket.c:2674 x64_sys_call+0xc4b/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: pskb_expand_head+0x30f/0x19d0 net/core/skbuff.c:2253 skb_expand_head+0x45d/0x890 net/core/skbuff.c:2417 ip_finish_output2+0xd9d/0x1b70 net/ipv4/ip_output.c:216 __ip_finish_output+0x287/0x810 ip_finish_output+0x4b/0x550 net/ipv4/ip_output.c:323 NF_HOOK_COND include/linux/netfilter.h:303 [inline] ip_mc_output+0x609/0xd50 net/ipv4/ip_output.c:420 dst_output include/net/dst.h:450 [inline] ip_local_out net/ipv4/ip_output.c:129 [inline] __ip_queue_xmit+0x2017/0x2030 net/ipv4/ip_output.c:535 sctp_v4_xmit+0x6a2/0xea0 net/sctp/protocol.c:1075 sctp_packet_transmit+0x3fff/0x4310 net/sctp/output.c:653 sctp_packet_singleton+0x342/0x440 net/sctp/outqueue.c:783 sctp_outq_flush_ctrl net/sctp/outqueue.c:914 [inline] sctp_outq_flush+0x77c/0x6590 net/sctp/outqueue.c:1212 sctp_outq_uncork+0x9c/0xb0 net/sctp/outqueue.c:764 sctp_side_effects net/sctp/sm_sideeffect.c:1198 [inline] sctp_do_sm+0x8c49/0x93d0 net/sctp/sm_sideeffect.c:1169 sctp_primitive_ASSOCIATE+0xc3/0x100 net/sctp/primitive.c:73 sctp_sendmsg_to_asoc+0x179f/0x1f00 net/sctp/socket.c:1841 sctp_sendmsg+0x32b9/0x4a80 net/sctp/socket.c:2031 inet_sendmsg+0x25a/0x280 net/ipv4/af_inet.c:851 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x267/0x380 net/socket.c:745 ____sys_sendmsg+0x877/0xb60 net/socket.c:2584 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638 __sys_sendmsg net/socket.c:2667 [inline] __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __x64_sys_sendmsg+0x307/0x4a0 net/socket.c:2674 x64_sys_call+0xc4b/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: slab_post_alloc_hook mm/slub.c:3804 [inline] slab_alloc_node mm/slub.c:3845 [inline] __do_kmalloc_node mm/slub.c:3965 [inline] __kmalloc_node_track_caller+0x747/0x1060 mm/slub.c:3986 kmalloc_reserve+0x249/0x4a0 net/core/skbuff.c:599 __alloc_skb+0x35b/0x7a0 net/core/skbuff.c:668 alloc_skb include/linux/skbuff.h:1313 [inline] sctp_packet_transmit+0x454/0x4310 net/sctp/output.c:598 sctp_packet_singleton+0x342/0x440 net/sctp/outqueue.c:783 sctp_outq_flush_ctrl net/sctp/outqueue.c:914 [inline] sctp_outq_flush+0x77c/0x6590 net/sctp/outqueue.c:1212 sctp_outq_uncork+0x9c/0xb0 net/sctp/outqueue.c:764 sctp_side_effects net/sctp/sm_sideeffect.c:1198 [inline] sctp_do_sm+0x8c49/0x93d0 net/sctp/sm_sideeffect.c:1169 sctp_primitive_ASSOCIATE+0xc3/0x100 net/sctp/primitive.c:73 sctp_sendmsg_to_asoc+0x179f/0x1f00 net/sctp/socket.c:1841 sctp_sendmsg+0x32b9/0x4a80 net/sctp/socket.c:2031 inet_sendmsg+0x25a/0x280 net/ipv4/af_inet.c:851 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x267/0x380 net/socket.c:745 ____sys_sendmsg+0x877/0xb60 net/socket.c:2584 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638 __sys_sendmsg net/socket.c:2667 [inline] __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __x64_sys_sendmsg+0x307/0x4a0 net/socket.c:2674 x64_sys_call+0xc4b/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 0 PID: 7808 Comm: syz-executor.3 Not tainted 6.9.0-rc5-syzkaller-00042-ge88c4cfcb7b8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 =====================================================