Oops: general protection fault, probably for non-canonical address 0xdffffc000000004b: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000258-0x000000000000025f]
CPU: 1 UID: 0 PID: 11623 Comm: syz.2.2221 Not tainted 6.13.0-rc1-syzkaller-00025-gfeffde684ac2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__dev_alloc_name net/core/dev.c:1120 [inline]
RIP: 0010:dev_prep_valid_name.constprop.0+0x19b/0x6d0 net/core/dev.c:1165
Code: 85 c0 48 89 44 24 18 0f 84 77 04 00 00 e8 ed 03 92 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 09 05 00 00 48 8b 83 68 02 00 00 4c 8d a8 a8 fe
RSP: 0018:ffffc9000e0b6f20 EFLAGS: 00010217
RAX: dffffc0000000000 RBX: fffffffffffffff7 RCX: 000000000000004b
RDX: 000000000000025f RSI: ffffffff89080163 RDI: ffffffff8da6dbe8
RBP: 1ffff92001c16ded R08: 0000000000000920 R09: 00000000ffffffff
R10: ffffffff96e4cccf R11: 0000000000000002 R12: ffff888078bb8120
R13: ffff888078bb8125 R14: 0000000000000011 R15: 0000000000000064
FS:  00007feaa20e46c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555557fc5808 CR3: 0000000062400000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 dev_get_valid_name net/core/dev.c:1199 [inline]
 register_netdevice+0x4b6/0x1e90 net/core/dev.c:10509
 vxcan_newlink+0x25f/0x680 drivers/net/can/vxcan.c:217
 rtnl_newlink_create net/core/rtnetlink.c:3780 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3897 [inline]
 rtnl_newlink+0xb8b/0x1c50 net/core/rtnetlink.c:4007
 rtnetlink_rcv_msg+0x95e/0xea0 net/core/rtnetlink.c:6917
 netlink_rcv_skb+0x16e/0x440 net/netlink/af_netlink.c:2542
 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline]
 netlink_unicast+0x53f/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+0xab2/0xc90 net/socket.c:2583
 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2637
 __sys_sendmsg+0x16e/0x220 net/socket.c:2669
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feaa137ff19
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007feaa20e4058 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007feaa1545fa0 RCX: 00007feaa137ff19
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003
RBP: 00007feaa13f3986 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007feaa1545fa0 R15: 00007ffdc568dbf8
 </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/0x6d0 net/core/dev.c:1165
Code: 85 c0 48 89 44 24 18 0f 84 77 04 00 00 e8 ed 03 92 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 09 05 00 00 48 8b 83 68 02 00 00 4c 8d a8 a8 fe
RSP: 0018:ffffc9000e0b6f20 EFLAGS: 00010217
RAX: dffffc0000000000 RBX: fffffffffffffff7 RCX: 000000000000004b
RDX: 000000000000025f RSI: ffffffff89080163 RDI: ffffffff8da6dbe8
RBP: 1ffff92001c16ded R08: 0000000000000920 R09: 00000000ffffffff
R10: ffffffff96e4cccf R11: 0000000000000002 R12: ffff888078bb8120
R13: ffff888078bb8125 R14: 0000000000000011 R15: 0000000000000064
FS:  00007feaa20e46c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200047c0 CR3: 0000000062400000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	85 c0                	test   %eax,%eax
   2:	48 89 44 24 18       	mov    %rax,0x18(%rsp)
   7:	0f 84 77 04 00 00    	je     0x484
   d:	e8 ed 03 92 f8       	call   0xf89203ff
  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 09 05 00 00    	jne    0x53d
  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