BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:414/tfrc_rx_hist_sample_rtt() CPU: 0 PID: 5098 Comm: syz-executor355 Not tainted 6.5.0-rc1-next-20230713-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106 tfrc_rx_hist_sample_rtt+0x3db/0x4a0 net/dccp/ccids/lib/packet_history.c:414 ccid3_hc_rx_packet_recv+0x844/0xf10 net/dccp/ccids/ccid3.c:760 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline] dccp_deliver_input_to_ccids+0xe3/0x260 net/dccp/input.c:176 dccp_rcv_established net/dccp/input.c:374 [inline] dccp_rcv_established+0x106/0x160 net/dccp/input.c:364 dccp_v4_do_rcv+0x169/0x1a0 net/dccp/ipv4.c:676 sk_backlog_rcv include/net/sock.h:1115 [inline] __sk_receive_skb+0x2a8/0xba0 net/core/sock.c:569 dccp_v4_rcv+0xfc2/0x1530 net/dccp/ipv4.c:899 ip_protocol_deliver_rcu+0x9f/0x480 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2e6/0x520 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:303 [inline] NF_HOOK include/linux/netfilter.h:297 [inline] ip_local_deliver+0x1be/0x550 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:468 [inline] ip_rcv_finish+0x1c4/0x2e0 net/ipv4/ip_input.c:449 NF_HOOK include/linux/netfilter.h:303 [inline] NF_HOOK include/linux/netfilter.h:297 [inline] ip_rcv+0xc8/0x410 net/ipv4/ip_input.c:569 __netif_receive_skb_one_core+0x115/0x180 net/core/dev.c:5452 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5566 process_backlog+0x101/0x6c0 net/core/dev.c:5894 __napi_poll.constprop.0+0xb4/0x530 net/core/dev.c:6456 napi_poll net/core/dev.c:6523 [inline] net_rx_action+0x93c/0xe80 net/core/dev.c:6656 __do_softirq+0x1d8/0x8fd kernel/softirq.c:553 do_softirq kernel/softirq.c:454 [inline] do_softirq+0xaa/0xe0 kernel/softirq.c:441 __local_bh_enable_ip+0xf8/0x120 kernel/softirq.c:381 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:819 [inline] __dev_queue_xmit+0xaeb/0x3e60 net/core/dev.c:4230 dev_queue_xmit include/linux/netdevice.h:3088 [inline] neigh_hh_output include/net/neighbour.h:528 [inline] neigh_output include/net/neighbour.h:542 [inline] ip_finish_output2+0x1701/0x24b0 net/ipv4/ip_output.c:230 __ip_finish_output net/ipv4/ip_output.c:308 [inline] __ip_finish_output+0x38b/0x640 net/ipv4/ip_output.c:290 ip_finish_output+0x31/0x310 net/ipv4/ip_output.c:318 NF_HOOK_COND include/linux/netfilter.h:292 [inline] ip_output+0x198/0x310 net/ipv4/ip_output.c:432 dst_output include/net/dst.h:458 [inline] ip_local_out net/ipv4/ip_output.c:127 [inline] __ip_queue_xmit+0xa0c/0x1be0 net/ipv4/ip_output.c:534 dccp_transmit_skb+0xd18/0x15f0 net/dccp/output.c:138 dccp_xmit_packet+0x1f8/0x710 net/dccp/output.c:281 dccp_write_xmit+0x16c/0x1d0 net/dccp/output.c:366 dccp_sendmsg+0x89b/0xc10 net/dccp/proto.c:791 inet_sendmsg+0x9d/0xe0 net/ipv4/af_inet.c:830 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg+0xd9/0x180 net/socket.c:748 ____sys_sendmsg+0x680/0x910 net/socket.c:2494 ___sys_sendmsg+0x11d/0x1b0 net/socket.c:2548 __sys_sendmsg+0xfa/0x1d0 net/socket.c:2577 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f88cfe0fb19 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd52be2018 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f88cfe0fb19 RDX: 000000000c004004 RSI: 0000000020004340 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000100000000 R09: 0000000100000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:414/tfrc_rx_hist_sample_rtt() CPU: 0 PID: 5101 Comm: syz-executor355 Not tainted 6.5.0-rc1-next-20230713-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106 tfrc_rx_hist_sample_rtt+0x3db/0x4a0 net/dccp/ccids/lib/packet_history.c:414 ccid3_hc_rx_packet_recv+0x844/0xf10 net/dccp/ccids/ccid3.c:760 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline] dccp_deliver_input_to_ccids+0xe3/0x260 net/dccp/input.c:176 dccp_rcv_established net/dccp/input.c:374 [inline] dccp_rcv_established+0x106/0x160 net/dccp/input.c:364 dccp_v4_do_rcv+0x169/0x1a0 net/dccp/ipv4.c:676 sk_backlog_rcv include/net/sock.h:1115 [inline] __sk_receive_skb+0x2a8/0xba0 net/core/sock.c:569 dccp_v4_rcv+0xfc2/0x1530 net/dccp/ipv4.c:899 ip_protocol_deliver_rcu+0x9f/0x480 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2e6/0x520 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:303 [inline] NF_HOOK include/linux/netfilter.h:297 [inline] ip_local_deliver+0x1be/0x550 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:468 [inline] ip_rcv_finish+0x1c4/0x2e0 net/ipv4/ip_input.c:449 NF_HOOK include/linux/netfilter.h:303 [inline] NF_HOOK include/linux/netfilter.h:297 [inline] ip_rcv+0xc8/0x410 net/ipv4/ip_input.c:569 __netif_receive_skb_one_core+0x115/0x180 net/core/dev.c:5452 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5566 process_backlog+0x101/0x6c0 net/core/dev.c:5894 __napi_poll.constprop.0+0xb4/0x530 net/core/dev.c:6456 napi_poll net/core/dev.c:6523 [inline] net_rx_action+0x93c/0xe80 net/core/dev.c:6656 __do_softirq+0x1d8/0x8fd kernel/softirq.c:553 do_softirq kernel/softirq.c:454 [inline] do_softirq+0xaa/0xe0 kernel/softirq.c:441 __local_bh_enable_ip+0xf8/0x120 kernel/softirq.c:381 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:819 [inline] __dev_queue_xmit+0xaeb/0x3e60 net/core/dev.c:4230 dev_queue_xmit include/linux/netdevice.h:3088 [inline] neigh_hh_output include/net/neighbour.h:528 [inline] neigh_output include/net/neighbour.h:542 [inline] ip_finish_output2+0x1701/0x24b0 net/ipv4/ip_output.c:230 __ip_finish_output net/ipv4/ip_output.c:308 [inline] __ip_finish_output+0x38b/0x640 net/ipv4/ip_output.c:290 ip_finish_output+0x31/0x310 net/ipv4/ip_output.c:318 NF_HOOK_COND include/linux/netfilter.h:292 [inline] ip_output+0x198/0x310 net/ipv4/ip_output.c:432 dst_output include/net/dst.h:458 [inline] ip_local_out net/ipv4/ip_output.c:127 [inline] __ip_queue_xmit+0xa0c/0x1be0 net/ipv4/ip_output.c:534 dccp_transmit_skb+0xd18/0x15f0 net/dccp/output.c:138 dccp_xmit_packet+0x1f8/0x710 net/dccp/output.c:281 dccp_write_xmit+0x16c/0x1d0 net/dccp/output.c:366 dccp_sendmsg+0x89b/0xc10 net/dccp/proto.c:791 inet_sendmsg+0x9d/0xe0 net/ipv4/af_inet.c:830 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg+0xd9/0x180 net/socket.c:748 ____sys_sendmsg+0x680/0x910 net/socket.c:2494 ___sys_sendmsg+0x11d/0x1b0 net/socket.c:2548 __sys_sendmsg+0xfa/0x1d0 net/socket.c:2577 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f88cfe0fb19 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd52be2018 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f88cfe0fb19 RDX: 000000000c004004 RSI: 0000000020004340 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000100000000 R09: 0000000100000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:414/tfrc_rx_hist_sample_rtt() CPU: 0 PID: 5104 Comm: syz-executor355 Not tainted 6.5.0-rc1-next-20230713-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106 tfrc_rx_hist_sample_rtt+0x3db/0x4a0 net/dccp/ccids/lib/packet_history.c:414 ccid3_hc_rx_packet_recv+0x844/0xf10 net/dccp/ccids/ccid3.c:760 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline] dccp_deliver_input_to_ccids+0xe3/0x260 net/dccp/input.c:176 dccp_rcv_established net/dccp/input.c:374 [inline] dccp_rcv_established+0x106/0x160 net/dccp/input.c:364 dccp_v4_do_rcv+0x169/0x1a0 net/dccp/ipv4.c:676 sk_backlog_rcv include/net/sock.h:1115 [inline] __sk_receive_skb+0x2a8/0xba0 net/core/sock.c:569 dccp_v4_rcv+0xfc2/0x1530 net/dccp/ipv4.c:899 ip_protocol_deliver_rcu+0x9f/0x480 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2e6/0x520 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:303 [inline] NF_HOOK include/linux/netfilter.h:297 [inline] ip_local_deliver+0x1be/0x550 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:468 [inline] ip_rcv_finish+0x1c4/0x2e0 net/ipv4/ip_input.c:449 NF_HOOK include/linux/netfilter.h:303 [inline] NF_HOOK include/linux/netfilter.h:297 [inline] ip_rcv+0xc8/0x410 net/ipv4/ip_input.c:569 __netif_receive_skb_one_core+0x115/0x180 net/core/dev.c:5452 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5566 process_backlog+0x101/0x6c0 net/core/dev.c:5894 __napi_poll.constprop.0+0xb4/0x530 net/core/dev.c:6456 napi_poll net/core/dev.c:6523 [inline] net_rx_action+0x93c/0xe80 net/core/dev.c:6656 __do_softirq+0x1d8/0x8fd kernel/softirq.c:553 do_softirq kernel/softirq.c:454 [inline] do_softirq+0xaa/0xe0 kernel/softirq.c:441 __local_bh_enable_ip+0xf8/0x120 kernel/softirq.c:381 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:819 [inline] __dev_queue_xmit+0xaeb/0x3e60 net/core/dev.c:4230 dev_queue_xmit include/linux/netdevice.h:3088 [inline] neigh_hh_output include/net/neighbour.h:528 [inline] neigh_output include/net/neighbour.h:542 [inline] ip_finish_output2+0x1701/0x24b0 net/ipv4/ip_output.c:230 __ip_finish_output net/ipv4/ip_output.c:308 [inline] __ip_finish_output+0x38b/0x640 net/ipv4/ip_output.c:290 ip_finish_output+0x31/0x310 net/ipv4/ip_output.c:318 NF_HOOK_COND include/linux/netfilter.h:292 [inline] ip_output+0x198/0x310 net/ipv4/ip_output.c:432 dst_output include/net/dst.h:458 [inline] ip_local_out net/ipv4/ip_output.c:127 [inline] __ip_queue_xmit+0xa0c/0x1be0 net/ipv4/ip_output.c:534 dccp_transmit_skb+0xd18/0x15f0 net/dccp/output.c:138 dccp_xmit_packet+0x1f8/0x710 net/dccp/output.c:281 dccp_write_xmit+0x16c/0x1d0 net/dccp/output.c:366 dccp_sendmsg+0x89b/0xc10 net/dccp/proto.c:791 inet_sendmsg+0x9d/0xe0 net/ipv4/af_inet.c:830 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg+0xd9/0x180 net/socket.c:748 ____sys_sendmsg+0x680/0x910 net/socket.c:2494 ___sys_sendmsg+0x11d/0x1b0 net/socket.c:2548 __sys_sendmsg+0xfa/0x1d0 net/socket.c:2577 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f88cfe0fb19 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd52be2018 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f88cfe0fb19 RDX: 000000000c004004 RSI: 0000000020004340 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000100000000 R09: 0000000100000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000