general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 0 PID: 29962 Comm: syz-executor.1 Not tainted 5.13.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__dev_alloc_name net/core/dev.c:1234 [inline]
RIP: 0010:dev_alloc_name_ns+0x1ef/0x6b0 net/core/dev.c:1279
Code: 45 69 fa 49 8d 47 10 48 89 44 24 18 48 c1 e8 03 80 3c 28 00 0f 85 56 04 00 00 4d 8b 67 10 49 8d 7c 24 10 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 58 04 00 00 49 8b 44 24 10 48 8d 58 f0 49 39 dc
RSP: 0018:ffffc900018aef88 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 00000000000003c2 RCX: ffffc9000be91000
RDX: 0000000000040000 RSI: ffffffff870b94a8 RDI: 0000000000000010
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff88806260207f
R10: ffffed100c4c040f R11: 0000000000000000 R12: 0000000000000000
R13: ffff888070448000 R14: ffff888062602000 R15: ffff888000100000
FS:  00007fd5f71b3700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004e4da3 CR3: 00000000ade73000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 dev_get_valid_name+0x67/0x160 net/core/dev.c:1314
 register_netdevice+0x361/0x1500 net/core/dev.c:10200
 br_dev_newlink+0x23/0x110 net/bridge/br_netlink.c:1438
 __rtnl_newlink+0x1062/0x1710 net/core/rtnetlink.c:3452
 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3500
 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5566
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504
 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1929
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:674
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2337
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2391
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2420
 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665d9
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd5f71b3188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000005
RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 0000000000a9fb1f R14: 00007fd5f71b3300 R15: 0000000000022000
Modules linked in:
---[ end trace 16b267cd620d9e0d ]---
RIP: 0010:__dev_alloc_name net/core/dev.c:1234 [inline]
RIP: 0010:dev_alloc_name_ns+0x1ef/0x6b0 net/core/dev.c:1279
Code: 45 69 fa 49 8d 47 10 48 89 44 24 18 48 c1 e8 03 80 3c 28 00 0f 85 56 04 00 00 4d 8b 67 10 49 8d 7c 24 10 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 58 04 00 00 49 8b 44 24 10 48 8d 58 f0 49 39 dc
RSP: 0018:ffffc900018aef88 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 00000000000003c2 RCX: ffffc9000be91000
RDX: 0000000000040000 RSI: ffffffff870b94a8 RDI: 0000000000000010
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff88806260207f
R10: ffffed100c4c040f R11: 0000000000000000 R12: 0000000000000000
R13: ffff888070448000 R14: ffff888062602000 R15: ffff888000100000
FS:  00007fd5f71b3700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004e4da3 CR3: 00000000ade73000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400