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 UID: 0 PID: 9405 Comm: syz.1.1126 Not tainted 6.12.0-rc1-syzkaller-00237-gcf9545686230 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 tfrc_rx_hist_sample_rtt+0x397/0x4b0 net/dccp/ccids/lib/packet_history.c:414
 ccid3_hc_rx_packet_recv+0x69d/0xe60 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+0x1bb/0x320 net/dccp/input.c:374
 dccp_v4_do_rcv+0xff/0x1f0 net/dccp/ipv4.c:680
 sk_backlog_rcv include/net/sock.h:1119 [inline]
 __sk_receive_skb+0x82b/0x8b0 net/core/sock.c:570
 ip_protocol_deliver_rcu+0x2e9/0x440 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x341/0x5f0 net/ipv4/ip_input.c:233
 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314
 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314
 __netif_receive_skb_one_core net/core/dev.c:5666 [inline]
 __netif_receive_skb+0x2bf/0x650 net/core/dev.c:5779
 process_backlog+0x662/0x15b0 net/core/dev.c:6111
 __napi_poll+0xcb/0x490 net/core/dev.c:6775
 napi_poll net/core/dev.c:6844 [inline]
 net_rx_action+0x89b/0x1240 net/core/dev.c:6966
 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1037
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:memset_orig+0x75/0xb0 arch/x86/lib/memset_64.S:90
Code: 89 47 30 48 89 47 38 48 8d 7f 40 75 d8 0f 1f 84 00 00 00 00 00 89 d1 83 e1 38 74 14 c1 e9 03 66 0f 1f 44 00 00 ff c9 48 89 07 <48> 8d 7f 08 75 f5 83 e2 07 74 0a ff ca 88 07 48 8d 7f 01 75 f6 4c
RSP: 0018:ffffc90003f8e9e8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888061ec9580 RCX: 0000000000000000
RDX: 0000000000000020 RSI: 0000000000000000 RDI: ffff888061ec9598
RBP: 0000000000000000 R08: ffffffff84f4154d R09: 0000000000000000
R10: ffff888061ec9580 R11: fffff520007f1d60 R12: 0000000000000020
R13: ffff88801ac41780 R14: ffffffff84f4159b R15: 0000000000002920
 slab_post_alloc_hook mm/slub.c:4089 [inline]
 slab_alloc_node mm/slub.c:4135 [inline]
 __kmalloc_cache_noprof+0x156/0x2c0 mm/slub.c:4291
 kmalloc_noprof include/linux/slab.h:878 [inline]
 kzalloc_noprof include/linux/slab.h:1014 [inline]
 ref_tracker_alloc+0x14b/0x490 lib/ref_tracker.c:203
 __netdev_tracker_alloc include/linux/netdevice.h:4054 [inline]
 netdev_hold include/linux/netdevice.h:4083 [inline]
 dst_init+0xee/0x490 net/core/dst.c:52
 dst_alloc+0x14f/0x190 net/core/dst.c:93
 rt_dst_alloc net/ipv4/route.c:1612 [inline]
 __mkroute_output net/ipv4/route.c:2577 [inline]
 ip_route_output_key_hash_rcu+0x13cc/0x2390 net/ipv4/route.c:2799
 ip_route_output_key_hash+0x193/0x2b0 net/ipv4/route.c:2628
 __ip_route_output_key include/net/route.h:141 [inline]
 ip_route_output_flow+0x29/0x140 net/ipv4/route.c:2856
 ip_route_output_key include/net/route.h:151 [inline]
 sctp_v4_get_dst+0x488/0x14a0 net/sctp/protocol.c:453
 sctp_transport_route+0x12c/0x2e0 net/sctp/transport.c:455
 sctp_assoc_add_peer+0x614/0x15c0 net/sctp/associola.c:662
 sctp_process_param net/sctp/sm_make_chunk.c:2576 [inline]
 sctp_process_init+0xe40/0x2b20 net/sctp/sm_make_chunk.c:2396
 sctp_cmd_process_init net/sctp/sm_sideeffect.c:706 [inline]
 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1389 [inline]
 sctp_side_effects net/sctp/sm_sideeffect.c:1198 [inline]
 sctp_do_sm+0x19aa/0x60c0 net/sctp/sm_sideeffect.c:1169
 sctp_assoc_bh_rcv+0x3f1/0x640 net/sctp/associola.c:1051
 sctp_backlog_rcv+0x177/0x3f0 net/sctp/input.c:331
 sk_backlog_rcv include/net/sock.h:1119 [inline]
 __release_sock+0x243/0x350 net/core/sock.c:3085
 release_sock+0x61/0x1f0 net/core/sock.c:3639
 sctp_wait_for_connect+0x3ce/0x6e0 net/sctp/socket.c:9352
 sctp_sendmsg_to_asoc+0x1404/0x1800 net/sctp/socket.c:1885
 sctp_sendmsg+0x1bc3/0x3520 net/sctp/socket.c:2031
 sock_sendmsg_nosec net/socket.c:729 [inline]
 __sock_sendmsg+0x1a6/0x270 net/socket.c:744
 __sys_sendto+0x39b/0x4f0 net/socket.c:2209
 __do_sys_sendto net/socket.c:2221 [inline]
 __se_sys_sendto net/socket.c:2217 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2217
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2952f7dff9
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2953cfd038 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f2953135f80 RCX: 00007f2952f7dff9
RDX: 0000000000000001 RSI: 0000000020000500 RDI: 0000000000000007
RBP: 00007f2952ff0296 R08: 0000000020000000 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2953135f80 R15: 00007ffd34bb9f08
 </TASK>
dccp_check_seqno: Step 6 failed for CLOSEREQ packet, (LSWL(100466406198339) <= P.seqno(100466406198338) <= S.SWH(100466406198413)) and (P.ackno exists or LAWL(29836505530800) <= P.ackno(29836505530800) <= S.AWH(29836505530800), sending SYNC...
----------------
Code disassembly (best guess):
   0:	89 47 30             	mov    %eax,0x30(%rdi)
   3:	48 89 47 38          	mov    %rax,0x38(%rdi)
   7:	48 8d 7f 40          	lea    0x40(%rdi),%rdi
   b:	75 d8                	jne    0xffffffe5
   d:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
  14:	00
  15:	89 d1                	mov    %edx,%ecx
  17:	83 e1 38             	and    $0x38,%ecx
  1a:	74 14                	je     0x30
  1c:	c1 e9 03             	shr    $0x3,%ecx
  1f:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
  25:	ff c9                	dec    %ecx
  27:	48 89 07             	mov    %rax,(%rdi)
* 2a:	48 8d 7f 08          	lea    0x8(%rdi),%rdi <-- trapping instruction
  2e:	75 f5                	jne    0x25
  30:	83 e2 07             	and    $0x7,%edx
  33:	74 0a                	je     0x3f
  35:	ff ca                	dec    %edx
  37:	88 07                	mov    %al,(%rdi)
  39:	48 8d 7f 01          	lea    0x1(%rdi),%rdi
  3d:	75 f6                	jne    0x35
  3f:	4c                   	rex.WR