kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) Bluetooth: Can't register HCI device general protection fault: 0000 [#1] PREEMPT SMP KASAN kobject: 'hci2' (00000000acdaaa96): kobject_uevent_env CPU: 0 PID: 5852 Comm: syz-executor119 Not tainted 4.19.0-rc8-next-20181018+ #97 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 RSP: 0018:ffff8801b9f075d0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff8801d7daf540 RCX: ffffffff87be3c27 RDX: 0000000000000001 RSI: ffffffff81f9e81a RDI: 0000000000000008 RBP: ffff8801b9f07618 R08: fffffbfff128fd1d R09: fffffbfff128fd1c R10: fffffbfff128fd1c R11: ffffffff8947e8e7 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000002036880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 kobject: 'rfkill225' (00000000c4ed95fe): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1/rfkill225' CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000414af0 CR3: 00000001cbeda000 CR4: 00000000001406f0 Call Trace: kernfs_create_dir_ns+0xf6/0x160 fs/kernfs/dir.c:1031 sysfs_create_dir_ns+0x19b/0x340 fs/sysfs/dir.c:58 kobject: 'hci2' (00000000acdaaa96): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2' kobject: 'rfkill225' (00000000c4ed95fe): kobject_uevent_env create_dir lib/kobject.c:88 [inline] kobject_add_internal.cold.11+0x116/0x6af lib/kobject.c:247 kobject: 'rfkill226' (0000000020fde341): kobject_add_internal: parent: 'hci2', set: 'devices' kobject_add_varg lib/kobject.c:382 [inline] kobject_add+0x13f/0x1b0 lib/kobject.c:426 kobject: 'rfkill225' (00000000c4ed95fe): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1/rfkill225' device_add+0x445/0x18e0 drivers/base/core.c:1879 kobject: 'rfkill226' (0000000020fde341): kobject_uevent_env kobject: 'rfkill226' (0000000020fde341): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill226' kobject: 'hci5' (00000000075e573c): kobject_add_internal: parent: 'bluetooth', set: 'devices' 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 kobject: 'rfkill227' (000000001fb4def9): kobject_add_internal: parent: 'hci3', set: 'devices' call_write_iter include/linux/fs.h:1844 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x6b8/0x9f0 fs/read_write.c:487 kobject: 'rfkill227' (000000001fb4def9): kobject_uevent_env vfs_write+0x1fc/0x560 fs/read_write.c:549 ksys_write+0x101/0x260 fs/read_write.c:598 kobject: 'rfkill227' (000000001fb4def9): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3/rfkill227' __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 kobject: 'hci5' (00000000075e573c): kobject_uevent_env do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 kobject: 'hci5' (00000000075e573c): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5' kobject: 'rfkill227' (000000001fb4def9): kobject_uevent_env entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440e79 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:00007ffc28e3fde8 EFLAGS: 00000213 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440e79 kobject: 'rfkill227' (000000001fb4def9): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3/rfkill227' RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8 R10: 0000000002036880 R11: 0000000000000213 R12: 000000000000da06 R13: 0000000000401da0 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: kobject: 'rfkill228' (0000000029623825): kobject_add_internal: parent: 'hci4', set: 'devices' ---[ end trace 52de90cd12b0e25b ]--- kobject: 'rfkill228' (0000000029623825): kobject_uevent_env RIP: 0010:kernfs_add_one+0x342/0x4d0 fs/kernfs/dir.c:812 kobject: 'rfkill228' (0000000029623825): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4/rfkill228' 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: 'rfkill228' (0000000029623825): kobject_uevent_env kobject: 'rfkill225' (00000000c4ed95fe): kobject_cleanup, parent (null) kobject: 'rfkill228' (0000000029623825): fill_kobj_path: path = '/devices/virtual/bluetooth/hci4/rfkill228' kobject: 'rfkill226' (0000000020fde341): kobject_uevent_env RSP: 0018:ffff8801b9f075d0 EFLAGS: 00010202 kobject: 'rfkill229' (000000008d775a52): kobject_add_internal: parent: 'hci5', set: 'devices' RAX: dffffc0000000000 RBX: ffff8801d7daf540 RCX: ffffffff87be3c27 kobject: 'rfkill226' (0000000020fde341): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill226' RDX: 0000000000000001 RSI: ffffffff81f9e81a RDI: 0000000000000008 kobject: 'rfkill225' (00000000c4ed95fe): calling ktype release RBP: ffff8801b9f07618 R08: fffffbfff128fd1d R09: fffffbfff128fd1c kobject: 'rfkill225': free name kobject: 'rfkill229' (000000008d775a52): kobject_uevent_env kobject: 'hci1' (00000000f9a556ee): kobject_uevent_env R10: fffffbfff128fd1c R11: ffffffff8947e8e7 R12: 0000000000000000 kobject: 'hci1' (00000000f9a556ee): fill_kobj_path: path = '/devices/virtual/bluetooth/hci1' kobject: 'rfkill229' (000000008d775a52): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5/rfkill229' kobject: 'hci1' (00000000f9a556ee): kobject_cleanup, parent (null) R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 kobject: 'hci1' (00000000f9a556ee): calling ktype release FS: 0000000002036880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 kobject: 'hci1': free name kobject: 'rfkill229' (000000008d775a52): kobject_uevent_env kobject: 'rfkill227' (000000001fb4def9): kobject_cleanup, parent (null) kobject: 'rfkill228' (0000000029623825): kobject_cleanup, parent (null) kobject: 'rfkill227' (000000001fb4def9): calling ktype release kobject: 'rfkill226' (0000000020fde341): kobject_cleanup, parent (null) CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'rfkill226' (0000000020fde341): calling ktype release kobject: 'rfkill227': free name kobject: 'rfkill228' (0000000029623825): calling ktype release CR2: 00007f00dbd97000 CR3: 00000001cbeda000 CR4: 00000000001406f0 kobject: 'rfkill229' (000000008d775a52): fill_kobj_path: path = '/devices/virtual/bluetooth/hci5/rfkill229' kobject: 'hci1' (00000000a22e8073): kobject_add_internal: parent: 'bluetooth', set: 'devices' kobject: 'rfkill226': free name