Oops: general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067]
CPU: 3 UID: 0 PID: 7373 Comm: syz.0.371 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:configfs_depend_item_unlocked+0x24a/0x6a0 fs/configfs/dir.c:1255
Code: 76 0e 09 c7 44 24 1c fe ff ff ff e9 a6 02 00 00 e8 eb f3 44 ff 48 8d 7d 60 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 1d 04 00 00 48 bb 00 00 00 00 00 fc ff df 4c 8b
RSP: 0018:ffffc9000c3ffb30 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 000000000000000c RSI: ffffffff82c75405 RDI: 0000000000000060
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: ffff888055222800 R14: ffff888055222800 R15: ffff888055222942
FS:  00007f3269dfc6c0(0000) GS:ffff8880d5e4e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3269db9ff8 CR3: 000000005c947000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 usbg_make_tpg+0x251/0x610 drivers/usb/gadget/function/f_tcm.c:1692
 target_fabric_make_tpg+0xab/0x8c0 drivers/target/target_core_fabric_configfs.c:947
 configfs_mkdir+0x525/0xd40 fs/configfs/dir.c:1369
 vfs_mkdir+0x364/0x850 fs/namei.c:5410
 filename_mkdirat+0x48b/0x5e0 fs/namei.c:5443
 __do_sys_mkdirat fs/namei.c:5464 [inline]
 __se_sys_mkdirat fs/namei.c:5461 [inline]
 __x64_sys_mkdirat+0x89/0xc0 fs/namei.c:5461
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3268f9e159
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:00007f3269dfc028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f3269225fa0 RCX: 00007f3268f9e159
RDX: 00000000000001ff RSI: 00002000000002c0 RDI: ffffffffffffff9c
RBP: 00007f326903506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3269226038 R14: 00007f3269225fa0 R15: 00007ffcdbf277f8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:configfs_depend_item_unlocked+0x24a/0x6a0 fs/configfs/dir.c:1255
Code: 76 0e 09 c7 44 24 1c fe ff ff ff e9 a6 02 00 00 e8 eb f3 44 ff 48 8d 7d 60 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 1d 04 00 00 48 bb 00 00 00 00 00 fc ff df 4c 8b
RSP: 0018:ffffc9000c3ffb30 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 000000000000000c RSI: ffffffff82c75405 RDI: 0000000000000060
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: ffff888055222800 R14: ffff888055222800 R15: ffff888055222942
FS:  00007f3269dfc6c0(0000) GS:ffff8880d5b4e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555561844a28 CR3: 000000005c947000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess), 3 bytes skipped:
   0:	c7 44 24 1c fe ff ff 	movl   $0xfffffffe,0x1c(%rsp)
   7:	ff
   8:	e9 a6 02 00 00       	jmp    0x2b3
   d:	e8 eb f3 44 ff       	call   0xff44f3fd
  12:	48 8d 7d 60          	lea    0x60(%rbp),%rdi
  16:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1d:	fc ff df
  20:	48 89 fa             	mov    %rdi,%rdx
  23:	48 c1 ea 03          	shr    $0x3,%rdx
* 27:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2b:	0f 85 1d 04 00 00    	jne    0x44e
  31:	48 bb 00 00 00 00 00 	movabs $0xdffffc0000000000,%rbx
  38:	fc ff df
  3b:	4c                   	rex.WR
  3c:	8b                   	.byte 0x8b