kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 16923 Comm: syz-executor.5 Not tainted 5.2.0+ #89
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kernfs_add_one+0x343/0x4d0 /fs/kernfs/dir.c:813
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 52 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 70 48 8d 7b 08 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 1f 01 00 00 8b 5b 08 31 ff 83
RSP: 0018:ffff888056d6f828 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90010bcf000
RDX: 0000000000000001 RSI: ffffffff81db15bb RDI: 0000000000000008
RBP: ffff888056d6f868 R08: 1ffffffff11d40dc R09: fffffbfff11d40dd
R10: fffffbfff11d40dc R11: ffffffff88ea06e7 R12: ffff888095df8460
R13: ffff888095df8460 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fbf03425700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdabb925000 CR3: 0000000087546000 CR4: 00000000001406f0
Call Trace:
 kernfs_create_dir_ns+0xff/0x160 /fs/kernfs/dir.c:1032
 sysfs_create_dir_ns+0x136/0x290 /fs/sysfs/dir.c:59
 create_dir /lib/kobject.c:89 [inline]
 kobject_add_internal /lib/kobject.c:255 [inline]
 kobject_add_internal.cold+0x116/0x662 /lib/kobject.c:225
 kobject_add_varg /lib/kobject.c:390 [inline]
 kobject_add+0x150/0x1c0 /lib/kobject.c:442
 device_add+0x3b7/0x17a0 /drivers/base/core.c:2062
 hci_register_dev+0x2e8/0x8f0 /net/bluetooth/hci_core.c:3307
 __vhci_create_device+0x2c5/0x5d0 /drivers/bluetooth/hci_vhci.c:124
 vhci_create_device /drivers/bluetooth/hci_vhci.c:148 [inline]
 vhci_get_user /drivers/bluetooth/hci_vhci.c:204 [inline]
 vhci_write+0x2d0/0x470 /drivers/bluetooth/hci_vhci.c:284
 call_write_iter /./include/linux/fs.h:1870 [inline]
 new_sync_write+0x4d3/0x770 /fs/read_write.c:483
 __vfs_write+0xe1/0x110 /fs/read_write.c:496
 vfs_write+0x268/0x5d0 /fs/read_write.c:558
 ksys_write+0x14f/0x290 /fs/read_write.c:611
 __do_sys_write /fs/read_write.c:623 [inline]
 __se_sys_write /fs/read_write.c:620 [inline]
 __x64_sys_write+0x73/0xb0 /fs/read_write.c:620
 do_syscall_64+0xfd/0x6a0 /arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459819
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fbf03424c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459819
RDX: 0000000000000002 RSI: 0000000020000000 RDI: 0000000000000005
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbf034256d4
R13: 00000000004c9985 R14: 00000000004e0e40 R15: 00000000ffffffff
Modules linked in:
---[ end trace 4e17351aabe64843 ]---
RIP: 0010:kernfs_add_one+0x343/0x4d0 /fs/kernfs/dir.c:813
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 52 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 70 48 8d 7b 08 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 1f 01 00 00 8b 5b 08 31 ff 83
RSP: 0018:ffff888056d6f828 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90010bcf000
RDX: 0000000000000001 RSI: ffffffff81db15bb RDI: 0000000000000008
RBP: ffff888056d6f868 R08: 1ffffffff11d40dc R09: fffffbfff11d40dd
R10: fffffbfff11d40dc R11: ffffffff88ea06e7 R12: ffff888095df8460
R13: ffff888095df8460 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fbf03425700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001ea8fd0 CR3: 0000000087546000 CR4: 00000000001406f0