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: 'bluetooth' (00000000afe384d8): kobject_add_internal: parent: 'virtual', set: '(null)' CPU: 0 PID: 9979 Comm: syz-executor0 Not tainted 4.20.0-rc2+ #337 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:ffff8881789df5d0 EFLAGS: 00010202 kobject: 'loop4' (00000000fd604c40): kobject_uevent_env RAX: dffffc0000000000 RBX: ffff8881d31370e0 RCX: ffffc90005dd6000 RDX: 0000000000000001 RSI: ffffffff81f8f80a RDI: 0000000000000008 RBP: ffff8881789df618 R08: fffffbfff12cfa19 R09: fffffbfff12cfa18 kobject: 'hci0' (000000007cba1908): kobject_add_internal: parent: 'bluetooth', set: 'devices' R10: fffffbfff12cfa18 R11: ffffffff8967d0c7 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007ffa6ca89700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000930004 CR3: 00000001d1df8000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kobject: 'loop4' (00000000fd604c40): fill_kobj_path: path = '/devices/virtual/block/loop4' 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:00007ffa6ca88c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffa6ca896d4 R13: 00000000004c553b R14: 00000000004d8fe8 R15: 00000000ffffffff Modules linked in: kobject: 'hci0' (000000007cba1908): kobject_uevent_env kobject: 'loop2' (000000001071f1e2): kobject_uevent_env kobject: 'hci2' (0000000015544aa6): kobject_add_internal: parent: 'bluetooth', set: 'devices' kobject: 'loop2' (000000001071f1e2): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'hci0' (000000007cba1908): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0' kobject: 'loop5' (00000000b5ccc743): kobject_uevent_env kobject: 'hci2' (0000000015544aa6): kobject_uevent_env kobject: 'loop5' (00000000b5ccc743): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'hci2' (0000000015544aa6): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2' kobject: 'loop3' (000000004572627b): kobject_uevent_env kobject: 'rfkill100' (00000000295c52bc): kobject_add_internal: parent: 'hci0', set: 'devices' kobject: 'loop3' (000000004572627b): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'rfkill100' (00000000295c52bc): kobject_uevent_env kobject: 'loop4' (00000000fd604c40): kobject_uevent_env kobject: 'rfkill100' (00000000295c52bc): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0/rfkill100' kobject: 'loop4' (00000000fd604c40): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'rfkill101' (00000000c88e50dd): kobject_add_internal: parent: 'hci2', set: 'devices' kobject: 'loop4' (00000000fd604c40): kobject_uevent_env kobject: 'rfkill100' (00000000295c52bc): kobject_uevent_env kobject: 'loop4' (00000000fd604c40): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'rfkill101' (00000000c88e50dd): kobject_uevent_env kobject: 'rfkill101' (00000000c88e50dd): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill101' kobject: 'rfkill100' (00000000295c52bc): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0/rfkill100' kobject: 'rfkill101' (00000000c88e50dd): kobject_uevent_env kobject: 'rfkill101' (00000000c88e50dd): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill101' kobject: 'loop4' (00000000fd604c40): kobject_uevent_env kobject: 'rfkill100' (00000000295c52bc): kobject_cleanup, parent (null) kobject: 'loop4' (00000000fd604c40): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'rfkill101' (00000000c88e50dd): kobject_cleanup, parent (null) kobject: 'rfkill101' (00000000c88e50dd): calling ktype release kobject: 'rfkill101': free name kobject: 'rfkill100' (00000000295c52bc): calling ktype release kobject: 'hci2' (0000000015544aa6): kobject_uevent_env kobject: 'hci2' (0000000015544aa6): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2' kobject: 'loop3' (000000004572627b): kobject_uevent_env kobject: 'rfkill100': free name kobject: 'hci0' (000000007cba1908): kobject_uevent_env kobject: 'hci2' (0000000015544aa6): kobject_cleanup, parent (null) kobject: 'loop3' (000000004572627b): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'hci0' (000000007cba1908): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0' kobject: 'hci2' (0000000015544aa6): calling ktype release kobject: 'loop4' (00000000fd604c40): kobject_uevent_env kobject: 'hci2': free name kobject: 'loop4' (00000000fd604c40): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'bluetooth' (00000000afe384d8): kobject_cleanup, parent (null) kobject: 'loop4' (00000000fd604c40): kobject_uevent_env kobject: 'bluetooth' (00000000afe384d8): calling ktype release kobject: 'bluetooth': free name kobject: 'loop4' (00000000fd604c40): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'bluetooth' (000000003e529b25): kobject_add_internal: parent: 'virtual', set: '(null)' kobject: 'hci0' (000000007cba1908): kobject_cleanup, parent (null) kobject: 'hci0' (000000007cba1908): calling ktype release kobject: 'hci2' (00000000135e5fa9): kobject_add_internal: parent: 'bluetooth', set: 'devices' kobject: 'hci0': free name kobject: 'hci2' (00000000135e5fa9): kobject_uevent_env kobject: 'hci2' (00000000135e5fa9): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2' kobject: 'rfkill102' (00000000e5584269): kobject_add_internal: parent: 'hci2', set: 'devices' kobject: 'loop1' (00000000a9167514): kobject_uevent_env kobject: 'rfkill102' (00000000e5584269): kobject_uevent_env kobject: 'loop1' (00000000a9167514): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'rfkill102' (00000000e5584269): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill102' kobject: 'loop2' (000000001071f1e2): kobject_uevent_env kobject: 'rfkill102' (00000000e5584269): kobject_uevent_env kobject: 'loop2' (000000001071f1e2): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'rfkill102' (00000000e5584269): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2/rfkill102' kobject: 'rfkill102' (00000000e5584269): kobject_cleanup, parent (null) kobject: 'rfkill102' (00000000e5584269): calling ktype release kobject: 'rfkill102': free name kobject: 'hci2' (00000000135e5fa9): kobject_uevent_env kobject: 'hci2' (00000000135e5fa9): fill_kobj_path: path = '/devices/virtual/bluetooth/hci2' kobject: 'bluetooth' (000000003e529b25): kobject_cleanup, parent (null) kobject: 'bluetooth' (000000003e529b25): calling ktype release kobject: 'bluetooth': free name kobject: 'hci2' (00000000135e5fa9): kobject_cleanup, parent (null) kobject: 'hci2' (00000000135e5fa9): calling ktype release ---[ end trace df05be5d2dba264a ]--- kobject: 'hci2': free name 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: 'loop5' (00000000b5ccc743): kobject_uevent_env RSP: 0018:ffff8881789df5d0 EFLAGS: 00010202 kobject: 'loop5' (00000000b5ccc743): fill_kobj_path: path = '/devices/virtual/block/loop5' RAX: dffffc0000000000 RBX: ffff8881d31370e0 RCX: ffffc90005dd6000 RDX: 0000000000000001 RSI: ffffffff81f8f80a RDI: 0000000000000008 RBP: ffff8881789df618 R08: fffffbfff12cfa19 R09: fffffbfff12cfa18 R10: fffffbfff12cfa18 R11: ffffffff8967d0c7 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007ffa6ca89700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000707158 CR3: 00000001d1df8000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400