kmalloc include/linux/slab.h:545 [inline]
 kzalloc include/linux/slab.h:740 [inline]
 hci_alloc_dev+0x43/0x1d00 net/bluetooth/hci_core.c:3116
 hci_uart_register_dev drivers/bluetooth/hci_ldisc.c:623 [inline]
 hci_uart_set_proto drivers/bluetooth/hci_ldisc.c:693 [inline]
 hci_uart_tty_ioctl+0x321/0xa70 drivers/bluetooth/hci_ldisc.c:748
 tty_ioctl+0xac9/0x14d0 drivers/tty/tty_io.c:2662
kasan: GPF could be caused by NULL-ptr deref or user memory access
Bluetooth: Invalid header checksum
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.0.0-rc5 #60
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events hci_uart_write_work
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696
RIP: 0010:hci_uart_write_work+0x1b6/0x710 drivers/bluetooth/hci_ldisc.c:180
Code: 0f 85 6a 04 00 00 49 8b b4 24 c8 00 00 00 4c 89 ef e8 ce 9c 53 02 89 c6 48 8b 45 d0 48 8d b8 5c 10 00 00 48 89 f8 48 c1 e8 03 <0f> b6 14 18 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 1d
RSP: 0018:ffff8880a98c7cb0 EFLAGS: 00010203
RAX: 000000000000020b RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 000000000000105c
RBP: ffff8880a98c7d30 R08: ffff8880a98b8480 R09: ffff8880a98b8d48
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809f760b40
R13: ffff88809fe6d640 R14: ffff88809b263b28 R15: ffff88809f760bb0
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
CR2: 0000000000000000 CR3: 0000000086d48000 CR4: 00000000001426e0
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
RIP: 0033:0x457e39
Call Trace:
Code: ad b8 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
 process_one_work+0x98e/0x1790 kernel/workqueue.c:2173
RSP: 002b:00007ff13097cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ff13097cc90 RCX: 0000000000457e39
RDX: 0000000000000002 RSI: 00000000400455c8 RDI: 0000000000000005
 worker_thread+0x98/0xe40 kernel/workqueue.c:2319
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
 kthread+0x357/0x430 kernel/kthread.c:246
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff13097d6d4
R13: 00000000004c06e7 R14: 00000000004d22d0 R15: 0000000000000006
kobject: 'kvm' (000000003e1d22cd): kobject_uevent_env
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Modules linked in:
kobject: 'loop2' (0000000051862e52): kobject_uevent_env
kobject: 'loop2' (0000000051862e52): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'kvm' (000000003e1d22cd): fill_kobj_path: path = '/devices/virtual/misc/kvm'
Bluetooth: Can't allocate HCI device
kobject: 'loop3' (000000009a8bd096): kobject_uevent_env
kobject: 'kvm' (000000003e1d22cd): kobject_uevent_env
kobject: 'loop3' (000000009a8bd096): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'kvm' (000000003e1d22cd): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop0' (000000007166b3aa): kobject_uevent_env
kobject: 'loop0' (000000007166b3aa): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop3' (000000009a8bd096): kobject_uevent_env
kobject: 'loop3' (000000009a8bd096): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop2' (0000000051862e52): kobject_uevent_env
kobject: 'loop2' (0000000051862e52): fill_kobj_path: path = '/devices/virtual/block/loop2'
---[ end trace 3c0e1e1f03dc71dc ]---
RIP: 0010:hci_uart_write_work+0x1b6/0x710 drivers/bluetooth/hci_ldisc.c:180
Code: 0f 85 6a 04 00 00 49 8b b4 24 c8 00 00 00 4c 89 ef e8 ce 9c 53 02 89 c6 48 8b 45 d0 48 8d b8 5c 10 00 00 48 89 f8 48 c1 e8 03 <0f> b6 14 18 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 1d
kobject: '(null)' (00000000b205d783): kobject_cleanup, parent           (null)
RSP: 0018:ffff8880a98c7cb0 EFLAGS: 00010203
RAX: 000000000000020b RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 000000000000105c
RBP: ffff8880a98c7d30 R08: ffff8880a98b8480 R09: ffff8880a98b8d48
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809f760b40
kobject: '(null)' (00000000b205d783): calling ktype release
R13: ffff88809fe6d640 R14: ffff88809b263b28 R15: ffff88809f760bb0
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'kvm' (000000003e1d22cd): kobject_uevent_env
kobject: 'loop0' (000000007166b3aa): kobject_uevent_env
CR2: 00007f0883888330 CR3: 0000000093147000 CR4: 00000000001426e0
kobject: 'loop0' (000000007166b3aa): fill_kobj_path: path = '/devices/virtual/block/loop0'
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
kobject: 'kvm' (000000003e1d22cd): fill_kobj_path: path = '/devices/virtual/misc/kvm'
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400