kvm [29958]: vcpu0, guest rIP: 0xfff0 disabled perfctr wrmsr: 0xc1 data 0x0
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: 1 PID: 29968 Comm: syz-executor2 Not tainted 4.20.0-rc5+ #142
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kernfs_add_one+0x342/0x4d0 fs/kernfs/dir.c:812
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 49 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6d 70 49 8d 7d 08 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 16 01 00 00 45 8b 6d 08 31 ff
kobject: 'kvm' (000000006f12ebff): kobject_uevent_env
RSP: 0018:ffff888182fef5d0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8881bf8231c0 RCX: ffffc90009e8a000
RDX: 0000000000000001 RSI: ffffffff81f9223a RDI: 0000000000000008
RBP: ffff888182fef618 R08: fffffbfff12cfac9 R09: fffffbfff12cfac8
R10: fffffbfff12cfac8 R11: ffffffff8967d647 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f279d51f700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000625208 CR3: 00000001cbabe000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 kernfs_create_dir_ns+0xf6/0x160 fs/kernfs/dir.c:1031
 sysfs_create_dir_ns+0x19b/0x340 fs/sysfs/dir.c:58
 create_dir lib/kobject.c:88 [inline]
 kobject_add_internal.cold.11+0x116/0x6af lib/kobject.c:247
 kobject_add_varg lib/kobject.c:382 [inline]
 kobject_add+0x13f/0x1b0 lib/kobject.c:426
 device_add+0x445/0x18e0 drivers/base/core.c:1879
 hci_register_dev+0x3b3/0x9c0 net/bluetooth/hci_core.c:3261
 __vhci_create_device+0x2c1/0x580 drivers/bluetooth/hci_vhci.c:139
 vhci_create_device drivers/bluetooth/hci_vhci.c:163 [inline]
 vhci_get_user drivers/bluetooth/hci_vhci.c:219 [inline]
 vhci_write+0x2de/0x470 drivers/bluetooth/hci_vhci.c:299
 call_write_iter include/linux/fs.h:1857 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x6b8/0x9f0 fs/read_write.c:487
 vfs_write+0x1fc/0x560 fs/read_write.c:549
 ksys_write+0x101/0x260 fs/read_write.c:598
 __do_sys_write fs/read_write.c:610 [inline]
 __se_sys_write fs/read_write.c:607 [inline]
 __x64_sys_write+0x73/0xb0 fs/read_write.c:607
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457569
Code: fd b3 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 b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f279d51ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569
RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000004
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f279d51f6d4
R13: 00000000004c57fc R14: 00000000004d9770 R15: 00000000ffffffff
Modules linked in:
kobject: 'kvm' (000000006f12ebff): kobject_uevent_env
kobject: 'loop4' (000000009f90d38b): kobject_uevent_env
kobject: 'loop4' (000000009f90d38b): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'kvm' (000000006f12ebff): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'bluetooth' (00000000e226a5bc): kobject_add_internal: parent: 'virtual', set: '(null)'
kobject: 'kvm' (000000006f12ebff): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'hci0' (0000000036c4cf24): kobject_add_internal: parent: 'bluetooth', set: 'devices'
kobject: 'kvm' (000000006f12ebff): kobject_uevent_env
kobject: 'hci0' (0000000036c4cf24): kobject_uevent_env
kobject: 'kvm' (000000006f12ebff): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000006f12ebff): kobject_uevent_env
kobject: 'hci0' (0000000036c4cf24): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0'
kobject: 'kvm' (000000006f12ebff): kobject_uevent_env
kobject: 'kvm' (000000006f12ebff): kobject_uevent_env
kobject: 'kvm' (000000006f12ebff): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000006f12ebff): kobject_uevent_env
kobject: 'rfkill67' (000000009fb20d49): kobject_add_internal: parent: 'hci0', set: 'devices'
kobject: 'kvm' (000000006f12ebff): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop4' (000000009f90d38b): kobject_uevent_env
kobject: 'loop4' (000000009f90d38b): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'kvm' (000000006f12ebff): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000006f12ebff): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'rfkill67' (000000009fb20d49): kobject_uevent_env
kobject: 'kvm' (000000006f12ebff): kobject_uevent_env
kobject: 'loop4' (000000009f90d38b): kobject_uevent_env
kobject: 'loop4' (000000009f90d38b): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop3' (00000000c24c47d9): kobject_uevent_env
kobject: 'rfkill67' (000000009fb20d49): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0/rfkill67'
kobject: 'kvm' (000000006f12ebff): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop3' (00000000c24c47d9): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'kvm' (000000006f12ebff): kobject_uevent_env
kobject: 'rfkill67' (000000009fb20d49): kobject_uevent_env
kobject: 'kvm' (000000006f12ebff): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'rfkill67' (000000009fb20d49): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0/rfkill67'
kobject: 'kvm' (000000006f12ebff): kobject_uevent_env
kobject: 'kvm' (000000006f12ebff): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000006f12ebff): kobject_uevent_env
kobject: 'loop4' (000000009f90d38b): kobject_uevent_env
kobject: 'rfkill67' (000000009fb20d49): kobject_cleanup, parent           (null)
---[ end trace 57b6e39a98f19471 ]---
kobject: 'kvm' (000000006f12ebff): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop4' (000000009f90d38b): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'rfkill67' (000000009fb20d49): calling ktype release
kobject: 'rfkill67': free name
kobject: 'kvm' (000000006f12ebff): kobject_uevent_env
kobject: 'hci0' (0000000036c4cf24): kobject_uevent_env
RIP: 0010:kernfs_add_one+0x342/0x4d0 fs/kernfs/dir.c:812
kobject: 'kvm' (000000006f12ebff): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'hci0' (0000000036c4cf24): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0'
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 49 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6d 70 49 8d 7d 08 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 16 01 00 00 45 8b 6d 08 31 ff
kobject: 'loop4' (000000009f90d38b): kobject_uevent_env
kobject: 'bluetooth' (00000000e226a5bc): kobject_cleanup, parent           (null)
kobject: 'loop4' (000000009f90d38b): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'kvm' (000000006f12ebff): kobject_uevent_env
kobject: 'kvm' (000000006f12ebff): kobject_uevent_env
kobject: 'kvm' (000000006f12ebff): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'bluetooth' (00000000e226a5bc): calling ktype release
RSP: 0018:ffff888182fef5d0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8881bf8231c0 RCX: ffffc90009e8a000
kobject: 'kvm' (000000006f12ebff): kobject_uevent_env
kobject: 'kvm' (000000006f12ebff): fill_kobj_path: path = '/devices/virtual/misc/kvm'
RDX: 0000000000000001 RSI: ffffffff81f9223a RDI: 0000000000000008
kobject: 'kvm' (000000006f12ebff): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop4' (000000009f90d38b): kobject_uevent_env
kobject: 'bluetooth': free name
RBP: ffff888182fef618 R08: fffffbfff12cfac9 R09: fffffbfff12cfac8
kobject: 'loop4' (000000009f90d38b): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'hci0' (0000000036c4cf24): kobject_cleanup, parent           (null)
kobject: 'kvm' (000000006f12ebff): kobject_uevent_env
kobject: 'kvm' (000000006f12ebff): fill_kobj_path: path = '/devices/virtual/misc/kvm'
R10: fffffbfff12cfac8 R11: ffffffff8967d647 R12: 0000000000000000
kobject: 'hci0' (0000000036c4cf24): calling ktype release
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
kobject: 'loop4' (000000009f90d38b): kobject_uevent_env
kobject: 'kvm' (000000006f12ebff): kobject_uevent_env
kobject: 'hci0': free name
kobject: 'loop4' (000000009f90d38b): kobject_uevent_env
kobject: 'loop4' (000000009f90d38b): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'kvm' (000000006f12ebff): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000006f12ebff): kobject_uevent_env
FS:  00007f279d51f700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000
kobject: 'loop4' (000000009f90d38b): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (00000000e4bd8eb2): kobject_uevent_env
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'kvm' (000000006f12ebff): kobject_uevent_env
kobject: 'kvm' (000000006f12ebff): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop5' (00000000e4bd8eb2): fill_kobj_path: path = '/devices/virtual/block/loop5'
CR2: 00007f559c473000 CR3: 00000001cbabe000 CR4: 00000000001426e0
kobject: 'kvm' (000000006f12ebff): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'bluetooth' (0000000069bc7e73): kobject_add_internal: parent: 'virtual', set: '(null)'
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
kobject: 'loop4' (000000009f90d38b): kobject_uevent_env
kobject: 'loop4' (000000009f90d38b): fill_kobj_path: path = '/devices/virtual/block/loop4'
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
kobject: 'hci0' (00000000a44beb3d): kobject_add_internal: parent: 'bluetooth', set: 'devices'