ccid3_first_li: No RTT estimate available, using fallback RTT
ccid3_first_li: X_recv==0
BUG: stored value of X_recv is zero at net/dccp/ccids/ccid3.c:691/ccid3_first_li()
CPU: 0 PID: 19190 Comm: syz-executor.2 Not tainted 6.5.0-rc7-syzkaller-00022-ga5e505a99ca7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106
 ccid3_first_li+0x317/0x520 net/dccp/ccids/ccid3.c:691
 tfrc_lh_interval_add+0x610/0x8e0 net/dccp/ccids/lib/loss_interval.c:157
 tfrc_rx_handle_loss+0xe02/0x2080 net/dccp/ccids/lib/packet_history.c:328
 ccid3_hc_rx_packet_recv+0x372/0xf10 net/dccp/ccids/ccid3.c:744
 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:571
 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/0x540 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:6460
 napi_poll net/core/dev.c:6527 [inline]
 net_rx_action+0x956/0xe90 net/core/dev.c:6660
 __do_softirq+0x218/0x965 kernel/softirq.c:553
 do_softirq kernel/softirq.c:454 [inline]
 do_softirq+0xaa/0xe0 kernel/softirq.c:441
 </IRQ>
 <TASK>
 __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+0xb1d/0x3f20 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+0x31/0x280 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+0xa15/0x1bf0 net/ipv4/ip_output.c:534
 dccp_transmit_skb+0xd18/0x15f0 net/dccp/output.c:138
 dccp_send_sync+0x1c2/0x270 net/dccp/output.c:666
 __dccp_rcv_established.constprop.0+0x189/0x410 net/dccp/input.c:346
 dccp_rcv_established net/dccp/input.c:376 [inline]
 dccp_rcv_established+0x111/0x160 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]
 __release_sock+0x132/0x3a0 net/core/sock.c:2981
 release_sock+0x58/0x1b0 net/core/sock.c:3518
 dccp_sendmsg+0x40f/0xcc0 net/dccp/proto.c:799
 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+0x2ac/0x940 net/socket.c:2494
 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2548
 __sys_sendmmsg+0x1a1/0x450 net/socket.c:2634
 __do_sys_sendmmsg net/socket.c:2663 [inline]
 __se_sys_sendmmsg net/socket.c:2660 [inline]
 __x64_sys_sendmmsg+0x9c/0x100 net/socket.c:2660
 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: 0033:0x7fef4cc7cae9
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:00007fef4da590c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007fef4cd9c050 RCX: 00007fef4cc7cae9
RDX: 0000000000000002 RSI: 0000000020003540 RDI: 0000000000000006
RBP: 00007fef4ccc847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fef4cd9c050 R15: 00007fef4cebfa48
 </TASK>