Oops: general protection fault, probably for non-canonical address 0xdffffc000000004c: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000260-0x0000000000000267]
CPU: 0 UID: 0 PID: 7229 Comm: syz.3.316 Not tainted 6.12.0-syzkaller-09734-g445d9f05fa14 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__dev_alloc_name net/core/dev.c:1120 [inline]
RIP: 0010:dev_prep_valid_name.constprop.0+0x19b/0x630 net/core/dev.c:1165
Code: 85 c0 48 89 44 24 18 0f 84 f0 03 00 00 e8 5d cb 95 f8 48 8d 93 68 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 d1 48 c1 e9 03 <80> 3c 01 00 0f 85 6c 04 00 00 48 8b 83 68 02 00 00 4c 8d a8 a8 fe
RSP: 0018:ffffc900044e6ee8 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: fffffffffffffffd RCX: 000000000000004c
RDX: 0000000000000265 RSI: ffffffff88f82ea3 RDI: ffffffff8da3aba0
RBP: 1ffff9200089cde6 R08: 0000000000000920 R09: 00000000ffffffff
R10: ffffffff96beecd7 R11: 0000000000000002 R12: ffff8880692fe120
R13: ffff8880692fe124 R14: 0000000000000011 R15: 0000000000000064
FS:  0000000000000000(0000) GS:ffff88802b400000(0063) knlGS:00000000f5136b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f5220132 CR3: 000000006b4e0000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 dev_get_valid_name net/core/dev.c:1199 [inline]
 register_netdevice+0x4b6/0x1e20 net/core/dev.c:10509
 veth_newlink+0x2a7/0xa30 drivers/net/veth.c:1819
 rtnl_newlink_create net/core/rtnetlink.c:3774 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3891 [inline]
 rtnl_newlink+0x11ad/0x1c10 net/core/rtnetlink.c:4001
 rtnetlink_rcv_msg+0x95b/0xea0 net/core/rtnetlink.c:6911
 netlink_rcv_skb+0x165/0x410 net/netlink/af_netlink.c:2541
 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline]
 netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1347
 netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1891
 sock_sendmsg_nosec net/socket.c:711 [inline]
 __sock_sendmsg net/socket.c:726 [inline]
 ____sys_sendmsg+0x9ae/0xb40 net/socket.c:2583
 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2637
 __sys_sendmsg+0x16e/0x220 net/socket.c:2669
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7fb3579
Code: 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 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 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f513657c EFLAGS: 00000292 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020000080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__dev_alloc_name net/core/dev.c:1120 [inline]
RIP: 0010:dev_prep_valid_name.constprop.0+0x19b/0x630 net/core/dev.c:1165
Code: 85 c0 48 89 44 24 18 0f 84 f0 03 00 00 e8 5d cb 95 f8 48 8d 93 68 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 d1 48 c1 e9 03 <80> 3c 01 00 0f 85 6c 04 00 00 48 8b 83 68 02 00 00 4c 8d a8 a8 fe
RSP: 0018:ffffc900044e6ee8 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: fffffffffffffffd RCX: 000000000000004c
RDX: 0000000000000265 RSI: ffffffff88f82ea3 RDI: ffffffff8da3aba0
RBP: 1ffff9200089cde6 R08: 0000000000000920 R09: 00000000ffffffff
R10: ffffffff96beecd7 R11: 0000000000000002 R12: ffff8880692fe120
R13: ffff8880692fe124 R14: 0000000000000011 R15: 0000000000000064
FS:  0000000000000000(0000) GS:ffff88802b400000(0063) knlGS:00000000f5136b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f5220132 CR3: 000000006b4e0000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	85 c0                	test   %eax,%eax
   2:	48 89 44 24 18       	mov    %rax,0x18(%rsp)
   7:	0f 84 f0 03 00 00    	je     0x3fd
   d:	e8 5d cb 95 f8       	call   0xf895cb6f
  12:	48 8d 93 68 02 00 00 	lea    0x268(%rbx),%rdx
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	48 89 d1             	mov    %rdx,%rcx
  26:	48 c1 e9 03          	shr    $0x3,%rcx
* 2a:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1) <-- trapping instruction
  2e:	0f 85 6c 04 00 00    	jne    0x4a0
  34:	48 8b 83 68 02 00 00 	mov    0x268(%rbx),%rax
  3b:	4c                   	rex.WR
  3c:	8d                   	.byte 0x8d
  3d:	a8 a8                	test   $0xa8,%al
  3f:	fe                   	.byte 0xfe