Oops: general protection fault, probably for non-canonical address 0xdffffc0000000080: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000400-0x0000000000000407]
CPU: 0 UID: 0 PID: 6320 Comm: syz.0.16 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:status_show_vhci drivers/usb/usbip/vhci_sysfs.c:80 [inline]
RIP: 0010:status_show+0x1c9/0xb90 drivers/usb/usbip/vhci_sysfs.c:160
Code: 03 80 3c 02 00 0f 85 c0 09 00 00 48 8b 9b 88 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 00 04 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a1 09 00 00 48 8b 83 00 04 00 00 41 c1 e6 04 45
RSP: 0018:ffffc9000338faa8 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87c77152
RDX: 0000000000000080 RSI: ffffffff87c771d8 RDI: 0000000000000400
RBP: ffff88807af50000 R08: 0000000000000005 R09: 0000000000000000
R10: 000000000000000f R11: 64666b636f732020 R12: dffffc0000000000
R13: ffff88807af5002d R14: 000000000000000f R15: 1ffff92000671f5f
FS:  00007fd87770c6c0(0000) GS:ffff88812431f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d95ffff CR3: 0000000077798000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 dev_attr_show+0x52/0xa0 drivers/base/core.c:2487
 sysfs_kf_seq_show+0x217/0x3f0 fs/sysfs/file.c:65
 seq_read_iter+0x32f/0x1270 fs/seq_file.c:231
 kernfs_fop_read_iter+0x46c/0x610 fs/kernfs/file.c:290
 new_sync_read fs/read_write.c:493 [inline]
 vfs_read+0x82e/0xb40 fs/read_write.c:574
 ksys_read+0x12a/0x250 fs/read_write.c:716
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x840 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd8769903b9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd87770c028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fd876b95fa0 RCX: 00007fd8769903b9
RDX: 0000000000000062 RSI: 0000000020001080 RDI: 0000000000000003
RBP: 00007fd876a1b9d4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd876b95fa0 R15: 00007ffe14b30e48
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:status_show_vhci drivers/usb/usbip/vhci_sysfs.c:80 [inline]
RIP: 0010:status_show+0x1c9/0xb90 drivers/usb/usbip/vhci_sysfs.c:160
Code: 03 80 3c 02 00 0f 85 c0 09 00 00 48 8b 9b 88 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 00 04 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a1 09 00 00 48 8b 83 00 04 00 00 41 c1 e6 04 45
RSP: 0018:ffffc9000338faa8 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87c77152
RDX: 0000000000000080 RSI: ffffffff87c771d8 RDI: 0000000000000400
RBP: ffff88807af50000 R08: 0000000000000005 R09: 0000000000000000
R10: 000000000000000f R11: 64666b636f732020 R12: dffffc0000000000
R13: ffff88807af5002d R14: 000000000000000f R15: 1ffff92000671f5f
FS:  00007fd87770c6c0(0000) GS:ffff88812441f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd8769ddb00 CR3: 0000000077798000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	03 80 3c 02 00 0f    	add    0xf00023c(%rax),%eax
   6:	85 c0                	test   %eax,%eax
   8:	09 00                	or     %eax,(%rax)
   a:	00 48 8b             	add    %cl,-0x75(%rax)
   d:	9b                   	fwait
   e:	88 00                	mov    %al,(%rax)
  10:	00 00                	add    %al,(%rax)
  12:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  19:	fc ff df
  1c:	48 8d bb 00 04 00 00 	lea    0x400(%rbx),%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 a1 09 00 00    	jne    0x9d5
  34:	48 8b 83 00 04 00 00 	mov    0x400(%rbx),%rax
  3b:	41 c1 e6 04          	shl    $0x4,%r14d
  3f:	45                   	rex.RB