------------[ 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: 7688 at net/ipv4/arp.c:1128 arp_req_get net/ipv4/arp.c:1128 [inline] WARNING: CPU: 0 PID: 7688 at net/ipv4/arp.c:1128 arp_ioctl+0x7eb/0x840 net/ipv4/arp.c:1261 Modules linked in: CPU: 0 PID: 7688 Comm: syz-executor.2 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 RIP: 0010:arp_req_get net/ipv4/arp.c:1128 [inline] RIP: 0010:arp_ioctl+0x7eb/0x840 net/ipv4/arp.c:1261 Code: fc ff ff e8 87 29 8e f9 b9 0e 00 00 00 4c 89 e6 48 c7 c2 00 95 01 8b 48 c7 c7 e0 93 01 8b c6 05 2e 27 de 05 01 e8 31 cd 5b 01 <0f> 0b e9 66 fc ff ff e8 59 29 8e f9 41 be fa ff ff ff e8 5e 69 6f RSP: 0018:ffffc9000a2b7a70 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff88807d2b5828 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff816142b8 RDI: fffff52001456f40 RBP: 1ffff92001456f54 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000201 R11: 203a7970636d656d R12: 0000000000000010 R13: ffff88807d2b5800 R14: 0000000000000000 R15: ffff88807d2b5924 FS: 00007ff73133f700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f07dbad53be CR3: 0000000081897000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: inet_ioctl+0x27f/0x320 net/ipv4/af_inet.c:955 sock_do_ioctl+0xcc/0x230 net/socket.c:1169 sock_ioctl+0x2f1/0x640 net/socket.c:1286 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff73068b5a9 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff73133f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ff7307ac050 RCX: 00007ff73068b5a9 RDX: 0000000020000000 RSI: 0000000000008954 RDI: 0000000000000005 RBP: 00007ff7306e67b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe70951f0f R14: 00007ff73133f300 R15: 0000000000022000