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: 1 PID: 4150 Comm: syz-executor.4 Not tainted 5.15.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 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:672
 sk_backlog_rcv include/net/sock.h:1059 [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:302
 NF_HOOK+0x364/0x410 include/linux/netfilter.h:302
 __netif_receive_skb_one_core net/core/dev.c:5485 [inline]
 __netif_receive_skb+0x1c6/0x530 net/core/dev.c:5599
 process_backlog+0x363/0x7f0 net/core/dev.c:6476
 __napi_poll+0xc7/0x440 net/core/dev.c:7035
 napi_poll net/core/dev.c:7102 [inline]
 net_rx_action+0x617/0xda0 net/core/dev.c:7192
 handle_softirqs+0x3a7/0x930 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:809 [inline]
 ip_finish_output2+0xdf1/0x11a0 net/ipv4/ip_output.c:229
 dst_output include/net/dst.h:443 [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+0x74a/0xb50 net/dccp/proto.c:810
 sock_sendmsg_nosec net/socket.c:704 [inline]
 __sock_sendmsg net/socket.c:716 [inline]
 ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2431
 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2485
 __sys_sendmsg net/socket.c:2514 [inline]
 __do_sys_sendmsg net/socket.c:2523 [inline]
 __se_sys_sendmsg+0x19a/0x260 net/socket.c:2521
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f5213e92959
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f52132140c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f5213fb1f80 RCX: 00007f5213e92959
RDX: 000000000c004004 RSI: 0000000020004340 RDI: 0000000000000005
RBP: 00007f5213eeec88 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f5213fb1f80 R15: 00007ffc0c1cdb48
 </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: 1 PID: 4243 Comm: syz-executor.1 Not tainted 5.15.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 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:672
 sk_backlog_rcv include/net/sock.h:1059 [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:302
 NF_HOOK+0x364/0x410 include/linux/netfilter.h:302
 __netif_receive_skb_one_core net/core/dev.c:5485 [inline]
 __netif_receive_skb+0x1c6/0x530 net/core/dev.c:5599
 process_backlog+0x363/0x7f0 net/core/dev.c:6476
 __napi_poll+0xc7/0x440 net/core/dev.c:7035
 napi_poll net/core/dev.c:7102 [inline]
 net_rx_action+0x617/0xda0 net/core/dev.c:7192
 handle_softirqs+0x3a7/0x930 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:809 [inline]
 ip_finish_output2+0xdf1/0x11a0 net/ipv4/ip_output.c:229
 dst_output include/net/dst.h:443 [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+0x74a/0xb50 net/dccp/proto.c:810
 sock_sendmsg_nosec net/socket.c:704 [inline]
 __sock_sendmsg net/socket.c:716 [inline]
 ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2431
 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2485
 __sys_sendmsg net/socket.c:2514 [inline]
 __do_sys_sendmsg net/socket.c:2523 [inline]
 __se_sys_sendmsg+0x19a/0x260 net/socket.c:2521
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f5c03520959
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5c028a20c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f5c0363ff80 RCX: 00007f5c03520959
RDX: 000000000c004004 RSI: 0000000020004340 RDI: 0000000000000005
RBP: 00007f5c0357cc88 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f5c0363ff80 R15: 00007fff6ce274c8
 </TASK>