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: 'hci0' (0000000059803d80): kobject_add_internal: parent: 'bluetooth', set: 'devices' CPU: 0 PID: 6169 Comm: syz-executor432 Not tainted 4.20.0-rc1-next-20181109+ #110 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: 'hci3' (00000000241dd732): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3' RSP: 0018:ffff8801bb87f5d0 EFLAGS: 00010202 kobject_add_internal failed for hci0 (error: -2 parent: bluetooth) RAX: dffffc0000000000 RBX: ffff8801c53c6a80 RCX: ffffffff87cdfac7 RDX: 0000000000000001 RSI: ffffffff81fa80ca RDI: 0000000000000008 RBP: ffff8801bb87f618 R08: fffffbfff12d0189 R09: fffffbfff12d0188 R10: fffffbfff12d0188 R11: ffffffff89680c47 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000a94880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'hci3' (00000000241dd732): kobject_cleanup, parent (null) CR2: 0000000000414ac0 CR3: 00000001bb86c000 CR4: 00000000001406f0 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 kobject: 'hci3' (00000000241dd732): calling ktype release sysfs_create_dir_ns+0x19b/0x340 fs/sysfs/dir.c:58 Bluetooth: Can't register HCI device create_dir lib/kobject.c:88 [inline] kobject_add_internal.cold.11+0x116/0x6af lib/kobject.c:247 kobject: 'hci3': free name kobject_add_varg lib/kobject.c:382 [inline] kobject_add+0x13f/0x1b0 lib/kobject.c:426 kobject: 'hci0' (0000000059803d80): kobject_cleanup, parent (null) device_add+0x445/0x18e0 drivers/base/core.c:1879 kobject: 'hci0' (0000000059803d80): calling ktype release kobject: 'hci0': free name kobject: 'bluetooth' (000000009186a219): kobject_add_internal: parent: 'virtual', set: '(null)' hci_register_dev+0x3b3/0x9c0 net/bluetooth/hci_core.c:3261 kobject: 'hci0' (00000000966b271f): kobject_add_internal: parent: 'bluetooth', set: 'devices' __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 kobject: 'hci0' (00000000966b271f): kobject_uevent_env call_write_iter include/linux/fs.h:1867 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x6b8/0x9f0 fs/read_write.c:487 kobject: 'hci0' (00000000966b271f): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0' vfs_write+0x1fc/0x560 fs/read_write.c:549 kobject: 'rfkill59' (00000000e1c69c84): kobject_add_internal: parent: 'hci0', set: 'devices' ksys_write+0x101/0x260 fs/read_write.c:598 kobject: 'rfkill59' (00000000e1c69c84): kobject_uevent_env __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 kobject: 'rfkill59' (00000000e1c69c84): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0/rfkill59' kobject: 'rfkill59' (00000000e1c69c84): kobject_uevent_env entry_SYSCALL_64_after_hwframe+0x49/0xbe kobject: 'rfkill59' (00000000e1c69c84): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0/rfkill59' RIP: 0033:0x440e49 Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 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 0f 83 0b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fff37fe7128 EFLAGS: 00000213 ORIG_RAX: 0000000000000001 kobject: 'rfkill59' (00000000e1c69c84): kobject_cleanup, parent (null) RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440e49 RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8 R10: 0000000000a94880 R11: 0000000000000213 R12: 0000000000009f70 R13: 0000000000401d70 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: kobject: 'rfkill59' (00000000e1c69c84): calling ktype release kobject: 'hci4' (0000000040d012ba): kobject_cleanup, parent (null) kobject: 'hci4' (0000000040d012ba): calling ktype release kobject: 'hci4': free name kobject: 'hci2' (000000004d4308ad): kobject_add_internal: parent: 'bluetooth', set: 'devices' kobject: 'hci4' (0000000088ab5569): kobject_add_internal: parent: 'bluetooth', set: 'devices' kobject: 'hci3' (00000000e4861fb7): kobject_add_internal: parent: 'bluetooth', set: 'devices' kobject: 'hci4' (0000000088ab5569): kobject_uevent_env kobject: 'hci5' (00000000e445f041): kobject_add_internal: parent: 'bluetooth', set: 'devices' kobject: 'rfkill59': free name kobject: 'hci3' (00000000e4861fb7): kobject_uevent_env kobject: 'hci4' (0000000088ab5569): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4' kobject: 'hci5' (00000000e445f041): kobject_uevent_env kobject: 'rfkill60' (0000000024c10b88): kobject_add_internal: parent: 'hci4', set: 'devices' kobject: 'hci3' (00000000e4861fb7): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3' kobject: 'hci0' (00000000966b271f): kobject_uevent_env kobject: 'hci2' (000000004d4308ad): kobject_uevent_env kobject: 'rfkill60' (0000000024c10b88): kobject_uevent_env kobject: 'hci5' (00000000e445f041): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5' kobject: 'hci0' (00000000966b271f): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0' kobject: 'hci2' (000000004d4308ad): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2' kobject: 'rfkill60' (0000000024c10b88): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4/rfkill60' kobject: 'hci0' (00000000966b271f): kobject_cleanup, parent (null) kobject: 'rfkill60' (0000000024c10b88): kobject_uevent_env kobject: 'rfkill61' (000000008d12550e): kobject_add_internal: parent: 'hci5', set: 'devices' kobject: 'rfkill60' (0000000024c10b88): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4/rfkill60' kobject: 'rfkill61' (000000008d12550e): kobject_uevent_env ---[ end trace 5261232adca78d84 ]--- kobject: 'hci0' (00000000966b271f): calling ktype release RIP: 0010:kernfs_add_one+0x342/0x4d0 fs/kernfs/dir.c:812 kobject: 'hci0': free name 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: 'hci0' (000000008f8947c3): kobject_add_internal: parent: 'bluetooth', set: 'devices' kobject: 'rfkill61' (000000008d12550e): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5/rfkill61' kobject: 'hci0' (000000008f8947c3): kobject_uevent_env RSP: 0018:ffff8801bb87f5d0 EFLAGS: 00010202 kobject: 'hci0' (000000008f8947c3): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0' kobject: 'rfkill61' (000000008d12550e): kobject_uevent_env kobject: 'rfkill62' (000000009fe9db12): kobject_add_internal: parent: 'hci2', set: 'devices' RAX: dffffc0000000000 RBX: ffff8801c53c6a80 RCX: ffffffff87cdfac7 kobject: 'rfkill62' (000000009fe9db12): kobject_uevent_env RDX: 0000000000000001 RSI: ffffffff81fa80ca RDI: 0000000000000008 kobject: 'rfkill62' (000000009fe9db12): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill62' kobject: 'rfkill61' (000000008d12550e): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5/rfkill61' kobject: 'rfkill63' (00000000121bab9c): kobject_add_internal: parent: 'hci3', set: 'devices' RBP: ffff8801bb87f618 R08: fffffbfff12d0189 R09: fffffbfff12d0188 kobject: 'rfkill62' (000000009fe9db12): kobject_uevent_env R10: fffffbfff12d0188 R11: ffffffff89680c47 R12: 0000000000000000 kobject: 'rfkill63' (00000000121bab9c): kobject_uevent_env R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 kobject: 'rfkill62' (000000009fe9db12): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill62' FS: 0000000000a94880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 kobject: 'rfkill63' (00000000121bab9c): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3/rfkill63' CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'rfkill63' (00000000121bab9c): kobject_uevent_env kobject: 'rfkill60' (0000000024c10b88): kobject_cleanup, parent (null) kobject: 'rfkill64' (00000000b193c397): kobject_add_internal: parent: 'hci0', set: 'devices' CR2: 00007fa184b34000 CR3: 00000001bb86c000 CR4: 00000000001406e0 kobject: 'rfkill63' (00000000121bab9c): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3/rfkill63' kobject: 'rfkill60' (0000000024c10b88): calling ktype release kobject: 'rfkill64' (00000000b193c397): kobject_uevent_env DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kobject: 'rfkill64' (00000000b193c397): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0/rfkill64' kobject: 'rfkill60': free name kobject: 'rfkill61' (000000008d12550e): kobject_cleanup, parent (null) kobject: 'hci4' (0000000088ab5569): kobject_uevent_env kobject: 'rfkill62' (000000009fe9db12): kobject_cleanup, parent (null) DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: 'rfkill63' (00000000121bab9c): kobject_cleanup, parent (null)