===================================================== BUG: KMSAN: uninit-value in tcp_do_parse_auth_options+0x4b8/0x640 net/ipv4/tcp_input.c:4381 tcp_do_parse_auth_options+0x4b8/0x640 net/ipv4/tcp_input.c:4381 tcp_parse_auth_options include/net/tcp.h:2770 [inline] tcp_inbound_hash+0x122/0x9c0 net/ipv4/tcp.c:4792 tcp_v4_rcv+0x388b/0x5750 net/ipv4/tcp_ipv4.c:2322 ip_protocol_deliver_rcu+0x2a3/0x13d0 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x336/0x500 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:5670 [inline] __netif_receive_skb+0x319/0xa00 net/core/dev.c:5783 process_backlog+0x4ad/0xa50 net/core/dev.c:6115 __napi_poll+0xe7/0x980 net/core/dev.c:6779 napi_poll net/core/dev.c:6848 [inline] net_rx_action+0xa5a/0x19b0 net/core/dev.c:6970 handle_softirqs+0x1a0/0x7c0 kernel/softirq.c:554 __do_softirq+0x14/0x1a kernel/softirq.c:588 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:919 [inline] __dev_queue_xmit+0x26d8/0x56d0 net/core/dev.c:4459 dev_queue_xmit include/linux/netdevice.h:3094 [inline] neigh_hh_output include/net/neighbour.h:526 [inline] neigh_output include/net/neighbour.h:540 [inline] ip_finish_output2+0x187c/0x1b70 net/ipv4/ip_output.c:236 __ip_finish_output+0x287/0x810 ip_finish_output+0x4b/0x550 net/ipv4/ip_output.c:324 NF_HOOK_COND include/linux/netfilter.h:303 [inline] ip_output+0x15f/0x3f0 net/ipv4/ip_output.c:434 dst_output include/net/dst.h:450 [inline] ip_local_out net/ipv4/ip_output.c:130 [inline] __ip_queue_xmit+0x1e95/0x2040 net/ipv4/ip_output.c:536 ip_queue_xmit+0x60/0x80 net/ipv4/ip_output.c:550 __tcp_transmit_skb+0x3c6b/0x4880 net/ipv4/tcp_output.c:1466 tcp_transmit_skb net/ipv4/tcp_output.c:1484 [inline] tcp_write_xmit+0x3b90/0x9070 net/ipv4/tcp_output.c:2827 __tcp_push_pending_frames net/ipv4/tcp_output.c:3012 [inline] tcp_send_fin+0xa9d/0x12e0 net/ipv4/tcp_output.c:3618 __tcp_close+0x140c/0x1550 net/ipv4/tcp.c:3129 __mptcp_close_ssk+0x74e/0x16e0 net/mptcp/protocol.c:2495 mptcp_close_ssk+0x26b/0x2c0 net/mptcp/protocol.c:2549 mptcp_pm_nl_rm_addr_or_subflow+0x635/0xd10 net/mptcp/pm_netlink.c:880 mptcp_pm_nl_rm_subflow_received net/mptcp/pm_netlink.c:915 [inline] mptcp_pm_flush_addrs_and_subflows net/mptcp/pm_netlink.c:1687 [inline] mptcp_nl_flush_addrs_list net/mptcp/pm_netlink.c:1708 [inline] mptcp_pm_nl_flush_addrs_doit+0xe10/0x1630 net/mptcp/pm_netlink.c:1749 genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x1214/0x12c0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x375/0x650 net/netlink/af_netlink.c:2541 genl_rcv+0x40/0x60 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline] netlink_unicast+0xf52/0x1260 net/netlink/af_netlink.c:1347 netlink_sendmsg+0x10da/0x11e0 net/netlink/af_netlink.c:1891 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg+0x30f/0x380 net/socket.c:726 ____sys_sendmsg+0x877/0xb60 net/socket.c:2581 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2635 __sys_sendmsg+0x1b6/0x300 net/socket.c:2667 __compat_sys_sendmsg net/compat.c:346 [inline] __do_compat_sys_sendmsg net/compat.c:353 [inline] __se_compat_sys_sendmsg net/compat.c:350 [inline] __ia32_compat_sys_sendmsg+0x9d/0xe0 net/compat.c:350 ia32_sys_call+0x2685/0x4180 arch/x86/include/generated/asm/syscalls_32.h:371 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb0/0x110 arch/x86/entry/common.c:386 do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:411 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:449 entry_SYSENTER_compat_after_hwframe+0x84/0x8e Uninit was created at: slab_post_alloc_hook mm/slub.c:4091 [inline] slab_alloc_node mm/slub.c:4134 [inline] kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4186 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587 __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678 alloc_skb_fclone include/linux/skbuff.h:1372 [inline] tcp_send_fin+0x3ba/0x12e0 net/ipv4/tcp_output.c:3604 __tcp_close+0x140c/0x1550 net/ipv4/tcp.c:3129 __mptcp_close_ssk+0x74e/0x16e0 net/mptcp/protocol.c:2495 mptcp_close_ssk+0x26b/0x2c0 net/mptcp/protocol.c:2549 mptcp_pm_nl_rm_addr_or_subflow+0x635/0xd10 net/mptcp/pm_netlink.c:880 mptcp_pm_nl_rm_subflow_received net/mptcp/pm_netlink.c:915 [inline] mptcp_pm_flush_addrs_and_subflows net/mptcp/pm_netlink.c:1687 [inline] mptcp_nl_flush_addrs_list net/mptcp/pm_netlink.c:1708 [inline] mptcp_pm_nl_flush_addrs_doit+0xe10/0x1630 net/mptcp/pm_netlink.c:1749 genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x1214/0x12c0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x375/0x650 net/netlink/af_netlink.c:2541 genl_rcv+0x40/0x60 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline] netlink_unicast+0xf52/0x1260 net/netlink/af_netlink.c:1347 netlink_sendmsg+0x10da/0x11e0 net/netlink/af_netlink.c:1891 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg+0x30f/0x380 net/socket.c:726 ____sys_sendmsg+0x877/0xb60 net/socket.c:2581 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2635 __sys_sendmsg+0x1b6/0x300 net/socket.c:2667 __compat_sys_sendmsg net/compat.c:346 [inline] __do_compat_sys_sendmsg net/compat.c:353 [inline] __se_compat_sys_sendmsg net/compat.c:350 [inline] __ia32_compat_sys_sendmsg+0x9d/0xe0 net/compat.c:350 ia32_sys_call+0x2685/0x4180 arch/x86/include/generated/asm/syscalls_32.h:371 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb0/0x110 arch/x86/entry/common.c:386 do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:411 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:449 entry_SYSENTER_compat_after_hwframe+0x84/0x8e CPU: 0 UID: 0 PID: 6181 Comm: syz.3.55 Not tainted 6.12.0-syzkaller-01782-gbf9aa14fc523 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 =====================================================