BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:417/tfrc_rx_hist_sample_rtt()
CPU: 0 PID: 5053 Comm: syz-executor.1 Not tainted 5.15.104-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 tfrc_rx_hist_sample_rtt+0x370/0x460 net/dccp/ccids/lib/packet_history.c:414
 ccid3_hc_rx_packet_recv+0x636/0xd50 net/dccp/ccids/ccid3.c:760
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids net/dccp/input.c:176 [inline]
 dccp_rcv_established+0x1b3/0x310 net/dccp/input.c:374
 dccp_v4_do_rcv+0xcd/0x190 net/dccp/ipv4.c:669
 sk_backlog_rcv include/net/sock.h:1057 [inline]
 __sk_receive_skb+0x416/0x9c0 net/core/sock.c:528
 ip_protocol_deliver_rcu+0x381/0x730 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1db/0x320 net/ipv4/ip_input.c:231
 NF_HOOK+0x364/0x410 include/linux/netfilter.h:307
 NF_HOOK+0x364/0x410 include/linux/netfilter.h:307
 __netif_receive_skb_one_core net/core/dev.c:5458 [inline]
 __netif_receive_skb+0x1c6/0x530 net/core/dev.c:5572
 process_backlog+0x363/0x7f0 net/core/dev.c:6449
 __napi_poll+0xc7/0x440 net/core/dev.c:7008
 napi_poll net/core/dev.c:7075 [inline]
 net_rx_action+0x617/0xda0 net/core/dev.c:7162
 __do_softirq+0x3b3/0x93a kernel/softirq.c:558
 do_softirq+0x162/0x240 kernel/softirq.c:459
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x1b1/0x1f0 kernel/softirq.c:383
 rcu_read_unlock_bh include/linux/rcupdate.h:766 [inline]
 ip_finish_output2+0xece/0x1270 net/ipv4/ip_output.c:229
 dst_output include/net/dst.h:449 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 __ip_queue_xmit+0x1296/0x1ce0 net/ipv4/ip_output.c:532
 dccp_transmit_skb+0xc29/0x1030 net/dccp/output.c:138
 dccp_xmit_packet+0x2ef/0x530 net/dccp/output.c:281
 dccp_write_xmit+0x131/0x220 net/dccp/output.c:366
 dccp_sendmsg+0x69c/0xa30 net/dccp/proto.c:794
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg net/socket.c:724 [inline]
 ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2412
 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2466
 __sys_sendmsg net/socket.c:2495 [inline]
 __do_sys_sendmsg net/socket.c:2504 [inline]
 __se_sys_sendmsg+0x19a/0x260 net/socket.c:2502
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f1a94cb90f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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:00007f1a9322b168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f1a94dd8f80 RCX: 00007f1a94cb90f9
RDX: 000000000c004004 RSI: 0000000020004340 RDI: 0000000000000008
RBP: 00007f1a94d14b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdfe3fd69f R14: 00007f1a9322b300 R15: 0000000000022000
 </TASK>
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:417/tfrc_rx_hist_sample_rtt()
CPU: 0 PID: 5061 Comm: syz-executor.3 Not tainted 5.15.104-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 tfrc_rx_hist_sample_rtt+0x370/0x460 net/dccp/ccids/lib/packet_history.c:414
 ccid3_hc_rx_packet_recv+0x636/0xd50 net/dccp/ccids/ccid3.c:760
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids net/dccp/input.c:176 [inline]
 dccp_rcv_established+0x1b3/0x310 net/dccp/input.c:374
 dccp_v4_do_rcv+0xcd/0x190 net/dccp/ipv4.c:669
 sk_backlog_rcv include/net/sock.h:1057 [inline]
 __sk_receive_skb+0x416/0x9c0 net/core/sock.c:528
 ip_protocol_deliver_rcu+0x381/0x730 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1db/0x320 net/ipv4/ip_input.c:231
 NF_HOOK+0x364/0x410 include/linux/netfilter.h:307
 NF_HOOK+0x364/0x410 include/linux/netfilter.h:307
 __netif_receive_skb_one_core net/core/dev.c:5458 [inline]
 __netif_receive_skb+0x1c6/0x530 net/core/dev.c:5572
 process_backlog+0x363/0x7f0 net/core/dev.c:6449
 __napi_poll+0xc7/0x440 net/core/dev.c:7008
 napi_poll net/core/dev.c:7075 [inline]
 net_rx_action+0x617/0xda0 net/core/dev.c:7162
 __do_softirq+0x3b3/0x93a kernel/softirq.c:558
 do_softirq+0x162/0x240 kernel/softirq.c:459
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x1b1/0x1f0 kernel/softirq.c:383
 rcu_read_unlock_bh include/linux/rcupdate.h:766 [inline]
 ip_finish_output2+0xece/0x1270 net/ipv4/ip_output.c:229
 dst_output include/net/dst.h:449 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 __ip_queue_xmit+0x1296/0x1ce0 net/ipv4/ip_output.c:532
 dccp_transmit_skb+0xc29/0x1030 net/dccp/output.c:138
 dccp_xmit_packet+0x2ef/0x530 net/dccp/output.c:281
 dccp_write_xmit+0x131/0x220 net/dccp/output.c:366
 dccp_sendmsg+0x69c/0xa30 net/dccp/proto.c:794
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg net/socket.c:724 [inline]
 ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2412
 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2466
 __sys_sendmsg net/socket.c:2495 [inline]
 __do_sys_sendmsg net/socket.c:2504 [inline]
 __se_sys_sendmsg+0x19a/0x260 net/socket.c:2502
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fb3e9d240f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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:00007fb3e8296168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fb3e9e43f80 RCX: 00007fb3e9d240f9
RDX: 000000000c004004 RSI: 0000000020004340 RDI: 0000000000000008
RBP: 00007fb3e9d7fb39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdc8e4fe7f R14: 00007fb3e8296300 R15: 0000000000022000
 </TASK>