Oops: general protection fault, probably for non-canonical address 0xdffffc0000000021: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000108-0x000000000000010f]
CPU: 2 UID: 0 PID: 61 Comm: kworker/2:1 Not tainted 6.15.0-syzkaller-10820-gcd2e103d57e5 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: wg-crypt-wg1 wg_packet_tx_worker
RIP: 0010:read_pnet include/net/net_namespace.h:409 [inline]
RIP: 0010:dev_net include/linux/netdevice.h:2713 [inline]
RIP: 0010:confirm_addr_indev+0x5c/0x8c0 net/ipv4/devinet.c:1439
Code: 80 3c 02 00 0f 85 58 08 00 00 48 8b 2b e8 ec 48 83 01 48 b8 00 00 00 00 00 fc ff df 48 8d bd 08 01 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 1a 08 00 00 48 8b ad 08 01 00 00 48 b8 00 00 00
RSP: 0018:ffffc90000cf7a10 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff88805cefac00 RCX: 00000000000000fe
RDX: 0000000000000021 RSI: ffffffff89fa18d1 RDI: 0000000000000108
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000
R13: 000000000100007f R14: 0000000000000001 R15: 00000000000000fe
FS:  0000000000000000(0000) GS:ffff8880d6965000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000025d1b000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 00000000000032e7 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inet_confirm_addr net/ipv4/devinet.c:1496 [inline]
 inet_confirm_addr+0x117/0x3a0 net/ipv4/devinet.c:1483
 send4+0x4fb/0x1070 drivers/net/wireguard/socket.c:53
 wg_socket_send_skb_to_peer+0x18f/0x210 drivers/net/wireguard/socket.c:175
 wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline]
 wg_packet_tx_worker+0x1aa/0x810 drivers/net/wireguard/send.c:276
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3321 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402
 kthread+0x3c5/0x780 kernel/kthread.c:464
 ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:read_pnet include/net/net_namespace.h:409 [inline]
RIP: 0010:dev_net include/linux/netdevice.h:2713 [inline]
RIP: 0010:confirm_addr_indev+0x5c/0x8c0 net/ipv4/devinet.c:1439
Code: 80 3c 02 00 0f 85 58 08 00 00 48 8b 2b e8 ec 48 83 01 48 b8 00 00 00 00 00 fc ff df 48 8d bd 08 01 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 1a 08 00 00 48 8b ad 08 01 00 00 48 b8 00 00 00
RSP: 0018:ffffc90000cf7a10 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff88805cefac00 RCX: 00000000000000fe
RDX: 0000000000000021 RSI: ffffffff89fa18d1 RDI: 0000000000000108
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000
R13: 000000000100007f R14: 0000000000000001 R15: 00000000000000fe
FS:  0000000000000000(0000) GS:ffff8880d6965000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000025d1b000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 00000000000032e7 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   4:	0f 85 58 08 00 00    	jne    0x862
   a:	48 8b 2b             	mov    (%rbx),%rbp
   d:	e8 ec 48 83 01       	call   0x18348fe
  12:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  19:	fc ff df
  1c:	48 8d bd 08 01 00 00 	lea    0x108(%rbp),%rdi
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 1a 08 00 00    	jne    0x84e
  34:	48 8b ad 08 01 00 00 	mov    0x108(%rbp),%rbp
  3b:	48                   	rex.W
  3c:	b8                   	.byte 0xb8
  3d:	00 00                	add    %al,(%rax)