======================================================== WARNING: possible irq lock inversion dependency detected 6.1.0-rc5-syzkaller-00326-g77c51ba552a1 #0 Not tainted -------------------------------------------------------- syz-executor.3/13060 just changed the state of lock: ffff88807e153e30 (k-slock-AF_INET){+.-.}-{2:2}, at: spin_lock include/linux/spinlock.h:350 [inline] ffff88807e153e30 (k-slock-AF_INET){+.-.}-{2:2}, at: dccp_v4_ctl_send_reset+0xb00/0x12f0 net/dccp/ipv4.c:569 but this lock took another, SOFTIRQ-unsafe lock in the past: (k-clock-AF_INET){+++.}-{2:2} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(k-clock-AF_INET); local_irq_disable(); lock(k-slock-AF_INET); lock(k-clock-AF_INET); lock(k-slock-AF_INET); *** DEADLOCK *** 4 locks held by syz-executor.3/13060: #0: ffff88804550d330 (sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1721 [inline] #0: ffff88804550d330 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_stream_connect+0x43/0xa0 net/ipv4/af_inet.c:728 #1: ffffffff8c58fc40 (rcu_read_lock){....}-{1:2}, at: read_pnet include/net/net_namespace.h:369 [inline] #1: ffffffff8c58fc40 (rcu_read_lock){....}-{1:2}, at: sock_net include/net/sock.h:645 [inline] #1: ffffffff8c58fc40 (rcu_read_lock){....}-{1:2}, at: __ip_queue_xmit+0x41/0x1bf0 net/ipv4/ip_output.c:457 #2: ffffffff8c58fc40 (rcu_read_lock){....}-{1:2}, at: __skb_unlink include/linux/skbuff.h:2324 [inline] #2: ffffffff8c58fc40 (rcu_read_lock){....}-{1:2}, at: __skb_dequeue include/linux/skbuff.h:2339 [inline] #2: ffffffff8c58fc40 (rcu_read_lock){....}-{1:2}, at: process_backlog+0x38f/0x810 net/core/dev.c:5929 #3: ffffffff8c58fc40 (rcu_read_lock){....}-{1:2}, at: __skb_pull include/linux/skbuff.h:2609 [inline] #3: ffffffff8c58fc40 (rcu_read_lock){....}-{1:2}, at: ip_local_deliver_finish+0x20a/0x4c0 net/ipv4/ip_input.c:230 the shortest dependencies between 2nd lock and 1st lock: -> (k-clock-AF_INET){+++.}-{2:2} { HARDIRQ-ON-W at: lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_write_lock_bh include/linux/rwlock_api_smp.h:202 [inline] _raw_write_lock_bh+0x33/0x40 kernel/locking/spinlock.c:334 sock_orphan include/net/sock.h:2090 [inline] dccp_close+0x4c8/0xd60 net/dccp/proto.c:1039 inet_release+0x132/0x270 net/ipv4/af_inet.c:428 __sock_release net/socket.c:650 [inline] sock_release+0x8b/0x1b0 net/socket.c:678 inet_ctl_sock_destroy include/net/inet_common.h:71 [inline] dccp_v4_exit_net+0x15a/0x2c0 net/dccp/ipv4.c:1050 ops_exit_list+0xb0/0x170 net/core/net_namespace.c:169 cleanup_net+0x4ee/0xb00 net/core/net_namespace.c:601 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x669/0x1090 kernel/workqueue.c:2436 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 HARDIRQ-ON-R at: lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_read_lock_bh include/linux/rwlock_api_smp.h:176 [inline] _raw_read_lock_bh+0x3f/0x70 kernel/locking/spinlock.c:252 sock_i_uid+0x1f/0xb0 net/core/sock.c:2542 udp_lib_lport_inuse+0x32/0x490 net/ipv4/udp.c:140 udp_lib_get_port+0x835/0x18c0 net/ipv4/udp.c:306 __inet_bind+0x831/0xc90 net/ipv4/af_inet.c:525 inet_bind+0x177/0x220 net/ipv4/af_inet.c:456 udp_sock_create4+0x1d1/0x490 net/ipv4/udp_tunnel_core.c:30 udp_sock_create include/net/udp_tunnel.h:59 [inline] rxe_setup_udp_tunnel.constprop.0+0xfc/0x220 drivers/infiniband/sw/rxe/rxe_net.c:186 rxe_net_ipv4_init drivers/infiniband/sw/rxe/rxe_net.c:622 [inline] rxe_net_init+0x1f/0xd0 drivers/infiniband/sw/rxe/rxe_net.c:667 rxe_module_init+0x10/0x49 drivers/infiniband/sw/rxe/rxe.c:213 do_one_initcall+0x141/0x780 init/main.c:1303 do_initcall_level init/main.c:1376 [inline] do_initcalls init/main.c:1392 [inline] do_basic_setup init/main.c:1411 [inline] kernel_init_freeable+0x6ff/0x788 init/main.c:1631 kernel_init+0x1e/0x1d0 init/main.c:1519 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 SOFTIRQ-ON-W at: lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_write_lock include/linux/rwlock_api_smp.h:209 [inline] _raw_write_lock+0x2e/0x40 kernel/locking/spinlock.c:300 l2tp_tunnel_register+0x126/0x1210 net/l2tp/l2tp_core.c:1477 l2tp_nl_cmd_tunnel_create+0x3d6/0x8b0 net/l2tp/l2tp_netlink.c:245 genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:756 genl_family_rcv_msg net/netlink/genetlink.c:833 [inline] genl_rcv_msg+0x445/0x780 net/netlink/genetlink.c:850 netlink_rcv_skb+0x157/0x430 net/netlink/af_netlink.c:2540 genl_rcv+0x28/0x40 net/netlink/genetlink.c:861 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x91b/0xe10 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2482 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2565 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_write_lock_bh include/linux/rwlock_api_smp.h:202 [inline] _raw_write_lock_bh+0x33/0x40 kernel/locking/spinlock.c:334 sock_orphan include/net/sock.h:2090 [inline] dccp_close+0x4c8/0xd60 net/dccp/proto.c:1039 inet_release+0x132/0x270 net/ipv4/af_inet.c:428 __sock_release net/socket.c:650 [inline] sock_release+0x8b/0x1b0 net/socket.c:678 inet_ctl_sock_destroy include/net/inet_common.h:71 [inline] dccp_v4_exit_net+0x15a/0x2c0 net/dccp/ipv4.c:1050 ops_exit_list+0xb0/0x170 net/core/net_namespace.c:169 cleanup_net+0x4ee/0xb00 net/core/net_namespace.c:601 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x669/0x1090 kernel/workqueue.c:2436 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 INITIAL READ USE at: lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_read_lock_bh include/linux/rwlock_api_smp.h:176 [inline] _raw_read_lock_bh+0x3f/0x70 kernel/locking/spinlock.c:252 sock_i_uid+0x1f/0xb0 net/core/sock.c:2542 udp_lib_lport_inuse+0x32/0x490 net/ipv4/udp.c:140 udp_lib_get_port+0x835/0x18c0 net/ipv4/udp.c:306 __inet_bind+0x831/0xc90 net/ipv4/af_inet.c:525 inet_bind+0x177/0x220 net/ipv4/af_inet.c:456 udp_sock_create4+0x1d1/0x490 net/ipv4/udp_tunnel_core.c:30 udp_sock_create include/net/udp_tunnel.h:59 [inline] rxe_setup_udp_tunnel.constprop.0+0xfc/0x220 drivers/infiniband/sw/rxe/rxe_net.c:186 rxe_net_ipv4_init drivers/infiniband/sw/rxe/rxe_net.c:622 [inline] rxe_net_init+0x1f/0xd0 drivers/infiniband/sw/rxe/rxe_net.c:667 rxe_module_init+0x10/0x49 drivers/infiniband/sw/rxe/rxe.c:213 do_one_initcall+0x141/0x780 init/main.c:1303 do_initcall_level init/main.c:1376 [inline] do_initcalls init/main.c:1392 [inline] do_basic_setup init/main.c:1411 [inline] kernel_init_freeable+0x6ff/0x788 init/main.c:1631 kernel_init+0x1e/0x1d0 init/main.c:1519 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 } ... key at: [] af_kern_callback_keys+0x20/0x300 ... acquired at: __raw_write_lock_bh include/linux/rwlock_api_smp.h:202 [inline] _raw_write_lock_bh+0x33/0x40 kernel/locking/spinlock.c:334 sock_orphan include/net/sock.h:2090 [inline] __mptcp_close+0x349/0x8d0 net/mptcp/protocol.c:2943 mptcp_close+0x28/0x150 net/mptcp/protocol.c:2969 inet_release+0x132/0x270 net/ipv4/af_inet.c:428 __sock_release+0xcd/0x280 net/socket.c:650 sock_close+0x1c/0x20 net/socket.c:1365 __fput+0x27c/0xa90 fs/file_table.c:320 task_work_run+0x16f/0x270 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:296 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> (k-slock-AF_INET){+.-.}-{2:2} { HARDIRQ-ON-W at: lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:355 [inline] lock_sock_nested+0x5f/0xf0 net/core/sock.c:3450 lock_sock include/net/sock.h:1721 [inline] __inet_bind+0x8c3/0xc90 net/ipv4/af_inet.c:511 inet_bind+0x177/0x220 net/ipv4/af_inet.c:456 udp_sock_create4+0x1d1/0x490 net/ipv4/udp_tunnel_core.c:30 udp_sock_create include/net/udp_tunnel.h:59 [inline] rxe_setup_udp_tunnel.constprop.0+0xfc/0x220 drivers/infiniband/sw/rxe/rxe_net.c:186 rxe_net_ipv4_init drivers/infiniband/sw/rxe/rxe_net.c:622 [inline] rxe_net_init+0x1f/0xd0 drivers/infiniband/sw/rxe/rxe_net.c:667 rxe_module_init+0x10/0x49 drivers/infiniband/sw/rxe/rxe.c:213 do_one_initcall+0x141/0x780 init/main.c:1303 do_initcall_level init/main.c:1376 [inline] do_initcalls init/main.c:1392 [inline] do_basic_setup init/main.c:1411 [inline] kernel_init_freeable+0x6ff/0x788 init/main.c:1631 kernel_init+0x1e/0x1d0 init/main.c:1519 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 IN-SOFTIRQ-W at: lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:350 [inline] dccp_v4_ctl_send_reset+0xb00/0x12f0 net/dccp/ipv4.c:569 dccp_v4_rcv+0x1283/0x18e0 net/dccp/ipv4.c:924 ip_protocol_deliver_rcu+0x9f/0x7c0 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2ec/0x4c0 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:302 [inline] NF_HOOK include/linux/netfilter.h:296 [inline] ip_local_deliver+0x1ae/0x200 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:455 [inline] ip_rcv_finish+0x1cf/0x2f0 net/ipv4/ip_input.c:444 NF_HOOK include/linux/netfilter.h:302 [inline] NF_HOOK include/linux/netfilter.h:296 [inline] ip_rcv+0xae/0xd0 net/ipv4/ip_input.c:564 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5489 __netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5603 process_backlog+0x3e4/0x810 net/core/dev.c:5931 __napi_poll+0xb8/0x770 net/core/dev.c:6498 napi_poll net/core/dev.c:6565 [inline] net_rx_action+0xa00/0xde0 net/core/dev.c:6676 __do_softirq+0x1fb/0xadc kernel/softirq.c:571 do_softirq.part.0+0xde/0x130 kernel/softirq.c:472 do_softirq kernel/softirq.c:464 [inline] __local_bh_enable_ip+0x106/0x130 kernel/softirq.c:396 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:808 [inline] ip_finish_output2+0x7dc/0x2180 net/ipv4/ip_output.c:229 __ip_finish_output net/ipv4/ip_output.c:306 [inline] __ip_finish_output+0x396/0x650 net/ipv4/ip_output.c:288 ip_finish_output+0x31/0x280 net/ipv4/ip_output.c:316 NF_HOOK_COND include/linux/netfilter.h:291 [inline] ip_output+0x1a3/0x320 net/ipv4/ip_output.c:430 dst_output include/net/dst.h:445 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] __ip_queue_xmit+0x8e2/0x1bf0 net/ipv4/ip_output.c:532 dccp_transmit_skb+0xcfe/0x1450 net/dccp/output.c:138 dccp_connect+0x39b/0x720 net/dccp/output.c:569 dccp_v4_connect+0x1098/0x2010 net/dccp/ipv4.c:149 __inet_stream_connect+0x69e/0xed0 net/ipv4/af_inet.c:665 inet_stream_connect+0x57/0xa0 net/ipv4/af_inet.c:729 __sys_connect_file+0x153/0x1a0 net/socket.c:1976 __sys_connect+0x165/0x1a0 net/socket.c:1993 __do_sys_connect net/socket.c:2003 [inline] __se_sys_connect net/socket.c:2000 [inline] __x64_sys_connect+0x73/0xb0 net/socket.c:2000 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:355 [inline] lock_sock_nested+0x5f/0xf0 net/core/sock.c:3450 lock_sock include/net/sock.h:1721 [inline] __inet_bind+0x8c3/0xc90 net/ipv4/af_inet.c:511 inet_bind+0x177/0x220 net/ipv4/af_inet.c:456 udp_sock_create4+0x1d1/0x490 net/ipv4/udp_tunnel_core.c:30 udp_sock_create include/net/udp_tunnel.h:59 [inline] rxe_setup_udp_tunnel.constprop.0+0xfc/0x220 drivers/infiniband/sw/rxe/rxe_net.c:186 rxe_net_ipv4_init drivers/infiniband/sw/rxe/rxe_net.c:622 [inline] rxe_net_init+0x1f/0xd0 drivers/infiniband/sw/rxe/rxe_net.c:667 rxe_module_init+0x10/0x49 drivers/infiniband/sw/rxe/rxe.c:213 do_one_initcall+0x141/0x780 init/main.c:1303 do_initcall_level init/main.c:1376 [inline] do_initcalls init/main.c:1392 [inline] do_basic_setup init/main.c:1411 [inline] kernel_init_freeable+0x6ff/0x788 init/main.c:1631 kernel_init+0x1e/0x1d0 init/main.c:1519 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 } ... key at: [] af_family_kern_slock_keys+0x20/0x300 ... acquired at: mark_lock kernel/locking/lockdep.c:4598 [inline] mark_usage kernel/locking/lockdep.c:4529 [inline] __lock_acquire+0x11d9/0x56d0 kernel/locking/lockdep.c:5009 lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:350 [inline] dccp_v4_ctl_send_reset+0xb00/0x12f0 net/dccp/ipv4.c:569 dccp_v4_rcv+0x1283/0x18e0 net/dccp/ipv4.c:924 ip_protocol_deliver_rcu+0x9f/0x7c0 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2ec/0x4c0 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:302 [inline] NF_HOOK include/linux/netfilter.h:296 [inline] ip_local_deliver+0x1ae/0x200 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:455 [inline] ip_rcv_finish+0x1cf/0x2f0 net/ipv4/ip_input.c:444 NF_HOOK include/linux/netfilter.h:302 [inline] NF_HOOK include/linux/netfilter.h:296 [inline] ip_rcv+0xae/0xd0 net/ipv4/ip_input.c:564 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5489 __netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5603 process_backlog+0x3e4/0x810 net/core/dev.c:5931 __napi_poll+0xb8/0x770 net/core/dev.c:6498 napi_poll net/core/dev.c:6565 [inline] net_rx_action+0xa00/0xde0 net/core/dev.c:6676 __do_softirq+0x1fb/0xadc kernel/softirq.c:571 do_softirq.part.0+0xde/0x130 kernel/softirq.c:472 do_softirq kernel/softirq.c:464 [inline] __local_bh_enable_ip+0x106/0x130 kernel/softirq.c:396 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:808 [inline] ip_finish_output2+0x7dc/0x2180 net/ipv4/ip_output.c:229 __ip_finish_output net/ipv4/ip_output.c:306 [inline] __ip_finish_output+0x396/0x650 net/ipv4/ip_output.c:288 ip_finish_output+0x31/0x280 net/ipv4/ip_output.c:316 NF_HOOK_COND include/linux/netfilter.h:291 [inline] ip_output+0x1a3/0x320 net/ipv4/ip_output.c:430 dst_output include/net/dst.h:445 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] __ip_queue_xmit+0x8e2/0x1bf0 net/ipv4/ip_output.c:532 dccp_transmit_skb+0xcfe/0x1450 net/dccp/output.c:138 dccp_connect+0x39b/0x720 net/dccp/output.c:569 dccp_v4_connect+0x1098/0x2010 net/dccp/ipv4.c:149 __inet_stream_connect+0x69e/0xed0 net/ipv4/af_inet.c:665 inet_stream_connect+0x57/0xa0 net/ipv4/af_inet.c:729 __sys_connect_file+0x153/0x1a0 net/socket.c:1976 __sys_connect+0x165/0x1a0 net/socket.c:1993 __do_sys_connect net/socket.c:2003 [inline] __se_sys_connect net/socket.c:2000 [inline] __x64_sys_connect+0x73/0xb0 net/socket.c:2000 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd stack backtrace: CPU: 0 PID: 13060 Comm: syz-executor.3 Not tainted 6.1.0-rc5-syzkaller-00326-g77c51ba552a1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106 print_irq_inversion_bug kernel/locking/lockdep.c:4636 [inline] check_usage_forwards kernel/locking/lockdep.c:4070 [inline] mark_lock_irq kernel/locking/lockdep.c:4205 [inline] mark_lock.part.0.cold+0xa9/0xd8 kernel/locking/lockdep.c:4634 mark_lock kernel/locking/lockdep.c:4598 [inline] mark_usage kernel/locking/lockdep.c:4529 [inline] __lock_acquire+0x11d9/0x56d0 kernel/locking/lockdep.c:5009 lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:350 [inline] dccp_v4_ctl_send_reset+0xb00/0x12f0 net/dccp/ipv4.c:569 dccp_v4_rcv+0x1283/0x18e0 net/dccp/ipv4.c:924 ip_protocol_deliver_rcu+0x9f/0x7c0 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2ec/0x4c0 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:302 [inline] NF_HOOK include/linux/netfilter.h:296 [inline] ip_local_deliver+0x1ae/0x200 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:455 [inline] ip_rcv_finish+0x1cf/0x2f0 net/ipv4/ip_input.c:444 NF_HOOK include/linux/netfilter.h:302 [inline] NF_HOOK include/linux/netfilter.h:296 [inline] ip_rcv+0xae/0xd0 net/ipv4/ip_input.c:564 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5489 __netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5603 process_backlog+0x3e4/0x810 net/core/dev.c:5931 __napi_poll+0xb8/0x770 net/core/dev.c:6498 napi_poll net/core/dev.c:6565 [inline] net_rx_action+0xa00/0xde0 net/core/dev.c:6676 __do_softirq+0x1fb/0xadc kernel/softirq.c:571 do_softirq.part.0+0xde/0x130 kernel/softirq.c:472 do_softirq kernel/softirq.c:464 [inline] __local_bh_enable_ip+0x106/0x130 kernel/softirq.c:396 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:808 [inline] ip_finish_output2+0x7dc/0x2180 net/ipv4/ip_output.c:229 __ip_finish_output net/ipv4/ip_output.c:306 [inline] __ip_finish_output+0x396/0x650 net/ipv4/ip_output.c:288 ip_finish_output+0x31/0x280 net/ipv4/ip_output.c:316 NF_HOOK_COND include/linux/netfilter.h:291 [inline] ip_output+0x1a3/0x320 net/ipv4/ip_output.c:430 dst_output include/net/dst.h:445 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] __ip_queue_xmit+0x8e2/0x1bf0 net/ipv4/ip_output.c:532 dccp_transmit_skb+0xcfe/0x1450 net/dccp/output.c:138 dccp_connect+0x39b/0x720 net/dccp/output.c:569 dccp_v4_connect+0x1098/0x2010 net/dccp/ipv4.c:149 __inet_stream_connect+0x69e/0xed0 net/ipv4/af_inet.c:665 inet_stream_connect+0x57/0xa0 net/ipv4/af_inet.c:729 __sys_connect_file+0x153/0x1a0 net/socket.c:1976 __sys_connect+0x165/0x1a0 net/socket.c:1993 __do_sys_connect net/socket.c:2003 [inline] __se_sys_connect net/socket.c:2000 [inline] __x64_sys_connect+0x73/0xb0 net/socket.c:2000 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f9fb1c8b639 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9fb0fde168 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 00007f9fb1dac050 RCX: 00007f9fb1c8b639 RDX: 0000000000000010 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 00007f9fb1ce6ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f9fb1ecfb1f R14: 00007f9fb0fde300 R15: 0000000000022000