RAX: ffffffffffffffda RBX: 00007f0e988eff60 RCX: 00007f0e987dd109
RDX: 0000000020000000 RSI: 0000000080045505 RDI: 0000000000000004
RBP: 00007f0e97f521d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fffbd15827f R14: 00007f0e97f52300 R15: 0000000000022000
usb usb9: device_add((null)) --> -22
general protection fault, probably for non-canonical address 0xdffffc0000000021: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000108-0x000000000000010f]
CPU: 0 PID: 8652 Comm: syz-executor.0 Not tainted 5.13.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__device_attach+0xa7/0x410 drivers/base/dd.c:914
Code: e8 03 42 80 3c 20 00 0f 85 f5 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 65 48 49 8d bc 24 08 01 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 06 0f 8e c0 02 00 00 45 31 ff 41 f6 84 24 08
RSP: 0018:ffffc90001917b98 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 1ffff92000322f74 RCX: 0000000000000000
RDX: 0000000000000021 RSI: 0000000000000008 RDI: 0000000000000108
RBP: ffff8880123a5030 R08: 0000000000000000 R09: ffff8880123a5147
R10: ffffed1002474a28 R11: 0000000000078087 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8880123a5140 R15: 00000000fffffff0
FS:  00007f0e97f52700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0e97f30d38 CR3: 0000000013bb4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 proc_ioctl.part.0+0x36e/0x430 drivers/usb/core/devio.c:2262
 proc_ioctl drivers/usb/core/devio.c:169 [inline]
 proc_ioctl_default drivers/usb/core/devio.c:2297 [inline]
 usbdev_do_ioctl drivers/usb/core/devio.c:2653 [inline]
 usbdev_ioctl+0x228b/0x2ea0 drivers/usb/core/devio.c:2713
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:1069 [inline]
 __se_sys_ioctl fs/ioctl.c:1055 [inline]
 __x64_sys_ioctl+0x11f/0x190 fs/ioctl.c:1055
 do_syscall_64+0x3a/0x70 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f0e987dd109
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0e97f52168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f0e988eff60 RCX: 00007f0e987dd109
RDX: 0000000020000040 RSI: 00000000c0105512 RDI: 0000000000000006
RBP: 00007f0e9883708d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffbd15827f R14: 00007f0e97f52300 R15: 0000000000022000
Modules linked in:
---[ end trace ad64c48785514804 ]---
RIP: 0010:__device_attach+0xa7/0x410 drivers/base/dd.c:914
Code: e8 03 42 80 3c 20 00 0f 85 f5 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 65 48 49 8d bc 24 08 01 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 06 0f 8e c0 02 00 00 45 31 ff 41 f6 84 24 08
RSP: 0018:ffffc90001917b98 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 1ffff92000322f74 RCX: 0000000000000000
RDX: 0000000000000021 RSI: 0000000000000008 RDI: 0000000000000108
RBP: ffff8880123a5030 R08: 0000000000000000 R09: ffff8880123a5147
R10: ffffed1002474a28 R11: 0000000000078087 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8880123a5140 R15: 00000000fffffff0
FS:  00007f0e97f52700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0e97f30d38 CR3: 0000000013bb4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	e8 03 42 80 3c       	callq  0x3c804208
   5:	20 00                	and    %al,(%rax)
   7:	0f 85 f5 02 00 00    	jne    0x302
   d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  14:	fc ff df
  17:	4c 8b 65 48          	mov    0x48(%rbp),%r12
  1b:	49 8d bc 24 08 01 00 	lea    0x108(%r12),%rdi
  22:	00
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	74 06                	je     0x38
  32:	0f 8e c0 02 00 00    	jle    0x2f8
  38:	45 31 ff             	xor    %r15d,%r15d
  3b:	41                   	rex.B
  3c:	f6                   	.byte 0xf6
  3d:	84 24 08             	test   %ah,(%rax,%rcx,1)