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: 3739 Comm: syz-executor.2 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
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+0x389/0x4a0 net/dccp/ccids/lib/packet_history.c:414
 ccid3_hc_rx_packet_recv+0x6c3/0xf70 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+0x1b2/0x310 net/dccp/input.c:374
 dccp_v4_do_rcv+0xfc/0x1f0 net/dccp/ipv4.c:687
 sk_backlog_rcv include/net/sock.h:1109 [inline]
 __sk_receive_skb+0x43f/0x9e0 net/core/sock.c:565
 ip_protocol_deliver_rcu+0x38d/0x750 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x269/0x480 net/ipv4/ip_input.c:233
 __netif_receive_skb_one_core net/core/dev.c:5489 [inline]
 __netif_receive_skb+0x1c5/0x500 net/core/dev.c:5603
 process_backlog+0x568/0x920 net/core/dev.c:5931
 __napi_poll+0xbe/0x4b0 net/core/dev.c:6498
 napi_poll net/core/dev.c:6565 [inline]
 net_rx_action+0x76c/0x1100 net/core/dev.c:6676
 __do_softirq+0x277/0x75b kernel/softirq.c:571
 do_softirq+0x161/0x240 kernel/softirq.c:472
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x1b0/0x1f0 kernel/softirq.c:396
 rcu_read_unlock_bh include/linux/rcupdate.h:808 [inline]
 ip_finish_output2+0xe51/0x11c0 net/ipv4/ip_output.c:229
 dst_output include/net/dst.h:445 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 __ip_queue_xmit+0x11b2/0x1bf0 net/ipv4/ip_output.c:532
 dccp_transmit_skb+0xd3b/0x13c0 net/dccp/output.c:138
 dccp_xmit_packet+0x2e9/0x530 net/dccp/output.c:281
 dccp_write_xmit+0x13d/0x1f0 net/dccp/output.c:366
 dccp_sendmsg+0x5af/0x820 net/dccp/proto.c:783
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 ____sys_sendmsg+0x597/0x8e0 net/socket.c:2482
 ___sys_sendmsg net/socket.c:2536 [inline]
 __sys_sendmsg+0x28e/0x390 net/socket.c:2565
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7de948b5a9
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:00007f7dea18b168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f7de95abf80 RCX: 00007f7de948b5a9
RDX: 0000000000040000 RSI: 0000000020000400 RDI: 0000000000000005
RBP: 00007f7de94e67b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffebc9068ef R14: 00007f7dea18b300 R15: 0000000000022000
 </TASK>