Oops: general protection fault, probably for non-canonical address 0xdffffc0000000016: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x00000000000000b0-0x00000000000000b7]
CPU: 1 UID: 0 PID: 10969 Comm: syz.2.1309 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:macvlan_forward_source_one drivers/net/macvlan.c:408 [inline]
RIP: 0010:macvlan_forward_source+0x1a7/0x630 drivers/net/macvlan.c:438
Code: 80 3c 20 00 74 08 4c 89 f7 e8 e5 df eb fb 4d 8b 26 49 8d 9c 24 b0 00 00 00 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 64 03 00 00 d1 ed 44 08 ed 8b 1b 89 de 83
RSP: 0018:ffffc9000c2cf348 EFLAGS: 00010202
RAX: 0000000000000016 RBX: 00000000000000b0 RCX: dffffc0000000000
RDX: ffff888048b68000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffffc0000045 R09: 0000005865ffffff
R10: 65ffffffffffffff R11: 0000000000000058 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88802fc00d80 R15: ffff88803158cb00
FS:  00007f22f62e76c0(0000) GS:ffff8881261b1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f761abc0000 CR3: 000000007db90000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 macvlan_handle_frame+0x2e2/0x12e0 drivers/net/macvlan.c:471
 __netif_receive_skb_core+0x95f/0x2f90 net/core/dev.c:6024
 __netif_receive_skb_one_core net/core/dev.c:6135 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6250
 netif_receive_skb_internal net/core/dev.c:6336 [inline]
 netif_receive_skb+0x1bb/0x750 net/core/dev.c:6395
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2aa3/0x3dc0 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f22f538e1ff
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007f22f62e7000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f22f55e5fa0 RCX: 00007f22f538e1ff
RDX: 000000000000006e RSI: 0000200000000040 RDI: 00000000000000c8
RBP: 00007f22f5413f91 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000006e R11: 0000000000000293 R12: 0000000000000000
R13: 00007f22f55e6038 R14: 00007f22f55e5fa0 R15: 00007ffe0eadd9d8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:macvlan_forward_source_one drivers/net/macvlan.c:408 [inline]
RIP: 0010:macvlan_forward_source+0x1a7/0x630 drivers/net/macvlan.c:438
Code: 80 3c 20 00 74 08 4c 89 f7 e8 e5 df eb fb 4d 8b 26 49 8d 9c 24 b0 00 00 00 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 64 03 00 00 d1 ed 44 08 ed 8b 1b 89 de 83
RSP: 0018:ffffc9000c2cf348 EFLAGS: 00010202
RAX: 0000000000000016 RBX: 00000000000000b0 RCX: dffffc0000000000
RDX: ffff888048b68000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffffc0000045 R09: 0000005865ffffff
R10: 65ffffffffffffff R11: 0000000000000058 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88802fc00d80 R15: ffff88803158cb00
FS:  00007f22f62e76c0(0000) GS:ffff8881261b1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f761abc0000 CR3: 000000007db90000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	80 3c 20 00          	cmpb   $0x0,(%rax,%riz,1)
   4:	74 08                	je     0xe
   6:	4c 89 f7             	mov    %r14,%rdi
   9:	e8 e5 df eb fb       	call   0xfbebdff3
   e:	4d 8b 26             	mov    (%r14),%r12
  11:	49 8d 9c 24 b0 00 00 	lea    0xb0(%r12),%rbx
  18:	00
  19:	48 89 d8             	mov    %rbx,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	0f b6 04 08          	movzbl (%rax,%rcx,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 64 03 00 00    	jne    0x39a
  36:	d1 ed                	shr    %ebp
  38:	44 08 ed             	or     %r13b,%bpl
  3b:	8b 1b                	mov    (%rbx),%ebx
  3d:	89 de                	mov    %ebx,%esi
  3f:	83                   	.byte 0x83