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: 0 PID: 5110 Comm: syz-executor.0 Not tainted 6.7.0-rc7-syzkaller-00041-gf016f7547aee #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106
 tfrc_rx_hist_sample_rtt+0x3dd/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+0xe3/0x260 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+0x169/0x1b0 net/dccp/ipv4.c:675
 sk_backlog_rcv include/net/sock.h:1121 [inline]
 __sk_receive_skb+0x2af/0x840 net/core/sock.c:571
 dccp_v4_rcv+0x128a/0x1980 net/dccp/ipv4.c:898
 ip_protocol_deliver_rcu+0x9f/0x480 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x2e4/0x510 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+0x1c4/0x2f0 net/ipv4/ip_input.c:449
 NF_HOOK include/linux/netfilter.h:314 [inline]
 NF_HOOK include/linux/netfilter.h:308 [inline]
 ip_rcv+0xaf/0xd0 net/ipv4/ip_input.c:569
 __netif_receive_skb_one_core+0x115/0x180 net/core/dev.c:5532
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5646
 process_backlog+0x101/0x6b0 net/core/dev.c:5974
 __napi_poll.constprop.0+0xb4/0x540 net/core/dev.c:6536
 napi_poll net/core/dev.c:6605 [inline]
 net_rx_action+0x956/0xe90 net/core/dev.c:6738
 __do_softirq+0x21a/0x8de kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu kernel/softirq.c:632 [inline]
 irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
 sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:bpf_lsm_file_free_security+0x0/0x10 include/linux/lsm_hook_defs.h:171
Code: 70 da ff 31 c0 c3 0f 1f 40 00 f3 0f 1e fa e8 67 70 da ff 31 c0 c3 0f 1f 40 00 f3 0f 1e fa e8 57 70 da ff 31 c0 c3 0f 1f 40 00 <f3> 0f 1e fa e9 47 70 da ff 0f 1f 80 00 00 00 00 f3 0f 1e fa e8 37
RSP: 0018:ffffc900043dfe78 EFLAGS: 00000246
RAX: 1ffffffff194ee73 RBX: ffffffff8ca77380 RCX: ffffffff8423c37d
RDX: ffff8880166b8000 RSI: ffffffff841b906b RDI: ffff88807a23f900
RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000000004bd R11: 0000000000000000 R12: ffff88807a23f900
R13: 0000000000000000 R14: 0000000000000003 R15: 000000000000c000
 security_file_free+0x42/0xd0 security/security.c:2623
 file_free fs/file_table.c:66 [inline]
 __fput+0x3e7/0xb70 fs/file_table.c:407
 __fput_sync+0x47/0x50 fs/file_table.c:475
 __do_sys_close fs/open.c:1587 [inline]
 __se_sys_close fs/open.c:1572 [inline]
 __x64_sys_close+0x87/0xf0 fs/open.c:1572
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f662547bbda
Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 03 7f 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 63 7f 02 00 8b 44 24
RSP: 002b:00007f66256bfd40 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f662547bbda
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f66256bfdbc R08: 00007f66256bf68c R09: 0079746972756365
R10: 00007f66256bf6f0 R11: 0000000000000293 R12: 0000000000000032
R13: 00000000000a88ef R14: 00000000000a88b5 R15: 0000000000000007
 </TASK>
ccid3_first_li: No RTT estimate available, using fallback RTT
tfrc_calc_x_reverse_lookup: fvalue 5592 smaller than resolution
----------------
Code disassembly (best guess), 3 bytes skipped:
   0:	31 c0                	xor    %eax,%eax
   2:	c3                   	ret
   3:	0f 1f 40 00          	nopl   0x0(%rax)
   7:	f3 0f 1e fa          	endbr64
   b:	e8 67 70 da ff       	call   0xffda7077
  10:	31 c0                	xor    %eax,%eax
  12:	c3                   	ret
  13:	0f 1f 40 00          	nopl   0x0(%rax)
  17:	f3 0f 1e fa          	endbr64
  1b:	e8 57 70 da ff       	call   0xffda7077
  20:	31 c0                	xor    %eax,%eax
  22:	c3                   	ret
  23:	0f 1f 40 00          	nopl   0x0(%rax)
* 27:	f3 0f 1e fa          	endbr64 <-- trapping instruction
  2b:	e9 47 70 da ff       	jmp    0xffda7077
  30:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  37:	f3 0f 1e fa          	endbr64
  3b:	e8                   	.byte 0xe8
  3c:	37                   	(bad)