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: 1 PID: 27 Comm: ksoftirqd/1 Not tainted 6.8.0-rc3-syzkaller-00010-g6d280f4d760e #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106
 tfrc_rx_hist_sample_rtt+0x3e1/0x4a0 net/dccp/ccids/lib/packet_history.c:414
 ccid3_hc_rx_packet_recv+0x443/0xf50 net/dccp/ccids/ccid3.c:760
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xe3/0x270 net/dccp/input.c:176
 dccp_rcv_established net/dccp/input.c:374 [inline]
 dccp_rcv_established+0x10a/0x160 net/dccp/input.c:364
 dccp_v4_do_rcv+0x16d/0x1b0 net/dccp/ipv4.c:675
 sk_backlog_rcv include/net/sock.h:1092 [inline]
 __sk_receive_skb+0x7b5/0x8a0 net/core/sock.c:568
 dccp_v4_rcv+0x1285/0x1980 net/dccp/ipv4.c:898
 ip_protocol_deliver_rcu+0x45e/0x4e0 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x2e4/0x520 net/ipv4/ip_input.c:233
 NF_HOOK include/linux/netfilter.h:314 [inline]
 NF_HOOK include/linux/netfilter.h:308 [inline]
 ip_local_deliver+0x18e/0x1f0 net/ipv4/ip_input.c:254
 dst_input include/net/dst.h:461 [inline]
 ip_rcv_finish net/ipv4/ip_input.c:449 [inline]
 NF_HOOK include/linux/netfilter.h:314 [inline]
 NF_HOOK include/linux/netfilter.h:308 [inline]
 ip_rcv+0x2c5/0x5d0 net/ipv4/ip_input.c:569
 __netif_receive_skb_one_core+0x199/0x1e0 net/core/dev.c:5534
 __netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5648
 process_backlog+0x101/0x6b0 net/core/dev.c:5976
 __napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6576
 napi_poll net/core/dev.c:6645 [inline]
 net_rx_action+0x95a/0xe90 net/core/dev.c:6778
 __do_softirq+0x21c/0x8e7 kernel/softirq.c:553
 run_ksoftirqd kernel/softirq.c:921 [inline]
 run_ksoftirqd+0x35/0x60 kernel/softirq.c:913
 smpboot_thread_fn+0x669/0xa20 kernel/smpboot.c:164
 kthread+0x2c6/0x3b0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
 </TASK>