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 kobject: 'hci3' (000000002422d3f5): kobject_cleanup, parent (null) CPU: 1 PID: 12679 Comm: syz-executor.3 Not tainted 4.19.60 #33 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:811 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:ffff88805a7af850 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000c4aa000 RDX: 0000000000000001 RSI: ffffffff81cd110b RDI: 0000000000000008 RBP: ffff88805a7af890 R08: 1ffffffff11106d4 R09: fffffbfff11106d5 kobject: 'hci3' (000000002422d3f5): calling ktype release R10: fffffbfff11106d4 R11: ffffffff888836a7 R12: ffff888088c26b60 R13: ffff888088c26b60 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f38cf9d9700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffd1a4ad48 CR3: 0000000088fcb000 CR4: 00000000001406e0 Call Trace: kernfs_create_dir_ns+0xff/0x160 /fs/kernfs/dir.c:1030 sysfs_create_dir_ns+0x131/0x290 /fs/sysfs/dir.c:58 kobject: 'hci3': free name create_dir /lib/kobject.c:88 [inline] kobject_add_internal /lib/kobject.c:247 [inline] kobject_add_internal.cold+0xe5/0x5d1 /lib/kobject.c:217 kobject_add_varg /lib/kobject.c:382 [inline] kobject_add+0x150/0x1c0 /lib/kobject.c:426 device_add+0x3cc/0x1760 /drivers/base/core.c:1885 kobject: 'loop5' (0000000088d6a94e): kobject_uevent_env hci_register_dev+0x304/0x880 /net/bluetooth/hci_core.c:3198 __vhci_create_device+0x2d0/0x5a0 /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+0x2d6/0x470 /drivers/bluetooth/hci_vhci.c:299 kobject: 'loop5' (0000000088d6a94e): fill_kobj_path: path = '/devices/virtual/block/loop5' call_write_iter /./include/linux/fs.h:1820 [inline] new_sync_write /fs/read_write.c:474 [inline] __vfs_write+0x587/0x810 /fs/read_write.c:487 kobject: 'bluetooth' (00000000f5ca1c7f): kobject_add_internal: parent: 'virtual', set: '(null)' vfs_write+0x20c/0x560 /fs/read_write.c:549 kobject: 'hci1' (00000000fef7c40e): kobject_add_internal: parent: 'bluetooth', set: 'devices' ksys_write+0x14f/0x2d0 /fs/read_write.c:599 kobject: 'hci1' (00000000fef7c40e): kobject_uevent_env __do_sys_write /fs/read_write.c:611 [inline] __se_sys_write /fs/read_write.c:608 [inline] __x64_sys_write+0x73/0xb0 /fs/read_write.c:608 do_syscall_64+0xfd/0x620 /arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe kobject: 'loop0' (00000000b395f3fe): kobject_uevent_env 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:00007f38cf9d8c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 kobject: 'hci1' (00000000fef7c40e): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1' RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459819 RDX: 0000000000000002 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f38cf9d96d4 R13: 00000000004c9985 R14: 00000000004e0e40 R15: 00000000ffffffff Modules linked in: ---[ end trace d1d8663dcd0d2a91 ]--- kobject: 'loop0' (00000000b395f3fe): fill_kobj_path: path = '/devices/virtual/block/loop0' RIP: 0010:kernfs_add_one+0x343/0x4d0 /fs/kernfs/dir.c:811 kobject: 'rfkill229' (000000007da89ae2): kobject_add_internal: parent: 'hci1', set: 'devices' 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 kobject: 'loop2' (0000000046403bc0): kobject_uevent_env RSP: 0018:ffff88805a7af850 EFLAGS: 00010202 kobject: 'loop2' (0000000046403bc0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000731272ab): kobject_uevent_env RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000c4aa000 kobject: 'loop4' (00000000731272ab): fill_kobj_path: path = '/devices/virtual/block/loop4' RDX: 0000000000000001 RSI: ffffffff81cd110b RDI: 0000000000000008 kobject: 'loop5' (0000000088d6a94e): kobject_uevent_env RBP: ffff88805a7af890 R08: 1ffffffff11106d4 R09: fffffbfff11106d5 kobject: 'rfkill229' (000000007da89ae2): kobject_uevent_env R10: fffffbfff11106d4 R11: ffffffff888836a7 R12: ffff888088c26b60 kobject: 'loop5' (0000000088d6a94e): fill_kobj_path: path = '/devices/virtual/block/loop5' R13: ffff888088c26b60 R14: 0000000000000000 R15: 0000000000000000 kobject: 'rfkill229' (000000007da89ae2): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1/rfkill229' FS: 00007f38cf9d9700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 kobject: 'loop1' (00000000d24d5a2f): kobject_uevent_env CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'rfkill229' (000000007da89ae2): kobject_uevent_env CR2: 0000001b31e23000 CR3: 0000000088fcb000 CR4: 00000000001406e0 kobject: 'rfkill229' (000000007da89ae2): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1/rfkill229'