netlink: 72 bytes leftover after parsing attributes in process `syz.1.2564'.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 15160 at net/ipv4/route.c:1275 ip_rt_bug+0x2c/0x110 net/ipv4/route.c:1275
Modules linked in:
CPU: 0 UID: 0 PID: 15160 Comm: syz.1.2564 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:ip_rt_bug+0x2c/0x110 net/ipv4/route.c:1275
Code: 1e fa 41 57 41 56 41 55 41 54 53 48 89 d3 e8 2b 2c 0f f8 66 90 e8 24 2c 0f f8 31 ff 48 89 de ba 02 00 00 00 e8 95 06 6f ff 90 <0f> 0b 90 31 c0 5b 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc cc f3 0f
RSP: 0018:ffffc90003a17160 EFLAGS: 00010286
RAX: 1968ef36ded12600 RBX: ffff88802857dc80 RCX: 1968ef36ded12600
RDX: 0000000000000002 RSI: ffffffff8d70e34e RDI: ffffffff8bbf08e0
RBP: 0000000000000001 R08: ffffffff8f7ced77 R09: 1ffffffff1ef9dae
R10: dffffc0000000000 R11: fffffbfff1ef9daf R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88802857dc80 R15: ffff8881452e9e00
FS:  0000000000000000(0000) GS:ffff88812613b000(0063) knlGS:00000000f5456b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000000c33ee70 CR3: 0000000028916000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ip_local_out net/ipv4/ip_output.c:131 [inline]
 ip_send_skb net/ipv4/ip_output.c:1508 [inline]
 ip_push_pending_frames+0xbe/0x150 net/ipv4/ip_output.c:1528
 __icmp_send+0xfc3/0x1320 net/ipv4/icmp.c:787
 icmp_send include/net/icmp.h:43 [inline]
 ip_options_compile+0x80/0xb0 net/ipv4/ip_options.c:473
 ip_rcv_options net/ipv4/ip_input.c:288 [inline]
 ip_rcv_finish_core+0xaa2/0x1c00 net/ipv4/ip_input.c:391
 ip_rcv_finish+0x14c/0x2f0 net/ipv4/ip_input.c:451
 NF_HOOK+0x30c/0x3a0 include/linux/netfilter.h:318
 __netif_receive_skb_one_core net/core/dev.c:6079 [inline]
 __netif_receive_skb+0x143/0x380 net/core/dev.c:6192
 netif_receive_skb_internal net/core/dev.c:6278 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6337
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xb6/0x2b0 arch/x86/entry/syscall_32.c:306
 do_fast_syscall_32+0x34/0x80 arch/x86/entry/syscall_32.c:331
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7f65539
Code: 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f5456520 EFLAGS: 00000206 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 00000000000000c8 RCX: 0000000080000080
RDX: 000000000000002e RSI: 00000000f73f6ff4 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   4:	10 07                	adc    %al,(%rdi)
   6:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   a:	10 08                	adc    %cl,(%rax)
   c:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  20:	00 51 52             	add    %dl,0x52(%rcx)
  23:	55                   	push   %rbp
  24:	89 e5                	mov    %esp,%ebp
  26:	0f 34                	sysenter
  28:	cd 80                	int    $0x80
* 2a:	5d                   	pop    %rbp <-- trapping instruction
  2b:	5a                   	pop    %rdx
  2c:	59                   	pop    %rcx
  2d:	c3                   	ret
  2e:	90                   	nop
  2f:	90                   	nop
  30:	90                   	nop
  31:	90                   	nop
  32:	90                   	nop
  33:	90                   	nop
  34:	90                   	nop
  35:	90                   	nop
  36:	90                   	nop
  37:	90                   	nop
  38:	90                   	nop
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop