audit: type=1804 audit(1551043438.617:555): pid=18175 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir509160946/syzkaller.pSPU3P/400/file0" dev="sda1" ino=17201 res=1
Bluetooth: hci0: Frame reassembly failed (-84)
BUG: unable to handle kernel paging request at ffffffffffffffd6
#PF error: [normal kernel read fault]
PGD 8874067 P4D 8874067 PUD 8876067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 14594 Comm: kworker/u4:9 Not tainted 5.0.0-rc7+ #86
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound flush_to_ldisc
RIP: 0010:h4_recv_buf+0x1ea/0xda0 drivers/bluetooth/hci_h4.c:211
Code: b6 14 10 48 89 c8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 d7 0a 00 00 48 ba 00 00 00 00 00 fc ff df 48 8b 45 d0 4c 8d 60 70 <0f> b7 58 2a 4c 89 e0 48 c1 e8 03 0f b6 04 10 84 c0 74 08 3c 03 0f
RSP: 0018:ffff88800f57fb10 EFLAGS: 00010246
RAX: ffffffffffffffac RBX: 0000000000000000 RCX: ffffffffffffffd6
RDX: dffffc0000000000 RSI: ffffffff84ed3862 RDI: 0000000000000005
RBP: ffff88800f57fb98 R08: ffff88809835a180 R09: 0000000000000003
R10: ffffed1015d05bcf R11: ffff8880ae82de7b R12: 000000000000001c
R13: ffff8880827837c0 R14: ffff888098e22920 R15: 0000000000000006
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'loop2' (00000000fca252c2): kobject_uevent_env
CR2: ffffffffffffffd6 CR3: 0000000088a85000 CR4: 00000000001406f0
Call Trace:
 h4_recv+0xe4/0x200 drivers/bluetooth/hci_h4.c:131
kobject: 'loop2' (00000000fca252c2): fill_kobj_path: path = '/devices/virtual/block/loop2'
 hci_uart_tty_receive+0x22b/0x530 drivers/bluetooth/hci_ldisc.c:607
 tty_ldisc_receive_buf+0x164/0x1c0 drivers/tty/tty_buffer.c:465
 tty_port_default_receive_buf+0x7d/0xb0 drivers/tty/tty_port.c:38
 receive_buf drivers/tty/tty_buffer.c:481 [inline]
 flush_to_ldisc+0x228/0x390 drivers/tty/tty_buffer.c:533
 process_one_work+0x98e/0x1790 kernel/workqueue.c:2173
kobject: 'loop2' (00000000fca252c2): kobject_uevent_env
 worker_thread+0x98/0xe40 kernel/workqueue.c:2319
 kthread+0x357/0x430 kernel/kthread.c:246
kobject: 'loop2' (00000000fca252c2): fill_kobj_path: path = '/devices/virtual/block/loop2'
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Modules linked in:
CR2: ffffffffffffffd6
---[ end trace eef70bb4bf3b2090 ]---
RIP: 0010:h4_recv_buf+0x1ea/0xda0 drivers/bluetooth/hci_h4.c:211
kobject: 'loop5' (0000000062ac727c): kobject_uevent_env
Code: b6 14 10 48 89 c8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 d7 0a 00 00 48 ba 00 00 00 00 00 fc ff df 48 8b 45 d0 4c 8d 60 70 <0f> b7 58 2a 4c 89 e0 48 c1 e8 03 0f b6 04 10 84 c0 74 08 3c 03 0f
RSP: 0018:ffff88800f57fb10 EFLAGS: 00010246
RAX: ffffffffffffffac RBX: 0000000000000000 RCX: ffffffffffffffd6
RDX: dffffc0000000000 RSI: ffffffff84ed3862 RDI: 0000000000000005
RBP: ffff88800f57fb98 R08: ffff88809835a180 R09: 0000000000000003
R10: ffffed1015d05bcf R11: ffff8880ae82de7b R12: 000000000000001c
R13: ffff8880827837c0 R14: ffff888098e22920 R15: 0000000000000006
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'loop5' (0000000062ac727c): fill_kobj_path: path = '/devices/virtual/block/loop5'
CR2: ffffffffffffffd6 CR3: 0000000088a85000 CR4: 00000000001406f0