------------[ cut here ]------------
memcpy: detected field-spanning write (size 16) of single field "r->arp_ha.sa_data" at net/ipv4/arp.c:1128 (size 14)
WARNING: CPU: 0 PID: 3636 at net/ipv4/arp.c:1128 arp_req_get net/ipv4/arp.c:1128 [inline]
WARNING: CPU: 0 PID: 3636 at net/ipv4/arp.c:1128 arp_ioctl+0x7ef/0x840 net/ipv4/arp.c:1261
Modules linked in:
CPU: 0 PID: 3636 Comm: syz-executor173 Not tainted 6.1.0-syzkaller-03225-g764822972d64 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:arp_req_get net/ipv4/arp.c:1128 [inline]
RIP: 0010:arp_ioctl+0x7ef/0x840 net/ipv4/arp.c:1261
Code: fc ff ff e8 23 ba 35 f9 b9 0e 00 00 00 4c 89 e6 48 c7 c2 a0 1f 66 8b 48 c7 c7 80 1e 66 8b c6 05 a3 fb f1 05 01 e8 72 9a 5d 01 <0f> 0b e9 66 fc ff ff e8 f5 b9 35 f9 41 be fa ff ff ff e8 7a 14 6f
RSP: 0018:ffffc90003b9fa48 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff888023557028 RCX: 0000000000000000
RDX: ffff888024b9ba80 RSI: ffffffff8165e57c RDI: fffff52000773f3b
RBP: 1ffff92000773f4f R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000201 R11: 0000000000000000 R12: 0000000000000010
R13: ffff888023557000 R14: 0000000000000000 R15: ffff888023557124
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0063) knlGS:0000000056cd42c0
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020000504 CR3: 000000007e9e6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inet_ioctl+0x2f9/0x380 net/ipv4/af_inet.c:957
 sock_do_ioctl+0xcc/0x230 net/socket.c:1169
 compat_sock_ioctl_trans net/socket.c:3398 [inline]
 compat_sock_ioctl+0x3af/0x740 net/socket.c:3423
 __do_compat_sys_ioctl+0x255/0x2b0 fs/ioctl.c:968
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7e6d549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000fffc027c EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000008954
RDX: 0000000020000500 RSI: 00000000fffc02d0 RDI: 00000000f7f10000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	03 74 c0 01          	add    0x1(%rax,%rax,8),%esi
   4:	10 05 03 74 b8 01    	adc    %al,0x1b87403(%rip)        # 0x1b8740d
   a:	10 06                	adc    %al,(%rsi)
   c:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
  10:	10 07                	adc    %al,(%rdi)
  12:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
  16:	10 08                	adc    %cl,(%rax)
  18:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1c:	00 00                	add    %al,(%rax)
  1e:	00 00                	add    %al,(%rax)
  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                   	retq
  2e:	90                   	nop
  2f:	90                   	nop
  30:	90                   	nop
  31:	90                   	nop
  32:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  39:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi