[   35.394079][   T26] audit: type=1800 audit(1553168392.818:30): pid=7404 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.0.223' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   45.767484][ T1175] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
[   45.779822][ T1175] #PF error: [INSTR]
[   45.784776][ T1175] PGD 988d8067 P4D 988d8067 PUD 988d9067 PMD 0 
[   45.794531][ T1175] Oops: 0010 [#1] PREEMPT SMP KASAN
[   45.800845][ T1175] CPU: 0 PID: 1175 Comm: kworker/u5:0 Not tainted 5.1.0-rc1-next-20190321 #8
[   45.812344][ T1175] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   45.823846][ T1175] Workqueue: hci0 hci_power_on
[   45.829962][ T1175] RIP: 0010:          (null)
[   45.835384][ T1175] Code: Bad RIP value.
[   45.842741][ T1175] RSP: 0018:ffff8880a7fa7a28 EFLAGS: 00010246
[   45.856336][ T1175] RAX: 0000000000000000 RBX: ffffffff87ac5da0 RCX: 0000000000000000
[   45.866362][ T1175] RDX: 1ffffffff0f58bcd RSI: 1ffff11014ff2d9f RDI: ffff888091eee580
[   45.878886][ T1175] RBP: ffff8880a7fa7b00 R08: ffff8880a7f96400 R09: 0000000000000004
[   45.890542][ T1175] R10: ffffed10123ddcb5 R11: ffff888091eee5af R12: ffff888091eee580
[   45.906833][ T1175] R13: 1ffff11014ff4f47 R14: ffff888091eee590 R15: 0000000000000000
[   45.917254][ T1175] FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
[   45.929351][ T1175] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   45.944012][ T1175] CR2: ffffffffffffffd6 CR3: 00000000988d7000 CR4: 00000000001406f0
[   45.956398][ T1175] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   45.967982][ T1175] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   45.978637][ T1175] Call Trace:
[   45.983651][ T1175]  hci_uart_set_flow_control+0x41e/0x600
[   45.992580][ T1175]  ? hci_uart_init_ready+0xc0/0xc0
[   45.999873][ T1175]  ? hci_uart_set_baudrate+0x157/0x1c0
[   46.009181][ T1175]  mrvl_setup+0x22/0x110
[   46.014800][ T1175]  ? mrvl_load_firmware+0x5b0/0x5b0
[   46.022452][ T1175]  hci_uart_setup+0x1c4/0x490
[   46.030027][ T1175]  ? hci_uart_set_baudrate+0x1c0/0x1c0
[   46.036317][ T1175]  hci_dev_do_open+0x78c/0x1780
[   46.044380][ T1175]  ? hci_rx_work+0xaa0/0xaa0
[   46.049915][ T1175]  ? mark_held_locks+0xf0/0xf0
[   46.056890][ T1175]  hci_power_on+0x10d/0x580
[   46.065471][ T1175]  ? hci_error_reset+0xf0/0xf0
[   46.072016][ T1175]  process_one_work+0x98e/0x1790
[   46.079928][ T1175]  ? pwq_dec_nr_in_flight+0x320/0x320
[   46.087077][ T1175]  worker_thread+0x98/0xe40
[   46.092307][ T1175]  kthread+0x357/0x430
[   46.098346][ T1175]  ? process_one_work+0x1790/0x1790
[   46.104728][ T1175]  ? kthread_cancel_delayed_work_sync+0x20/0x20
[   46.114043][ T1175]  ret_from_fork+0x3a/0x50
[   46.122038][ T1175] Modules linked in:
[   46.133283][ T1175] CR2: 0000000000000000
[   46.142733][ T1175] ---[ end trace 1d0ef4438b7205a8 ]---
[   46.152487][ T1175] RIP: 0010:          (null)
[   46.161146][ T1175] Code: Bad RIP value.
[   46.166889][ T1175] RSP: 0018:ffff8880a7fa7a28 EFLAGS: 00010246
[   46.176136][ T1175] RAX: 0000000000000000 RBX: ffffffff87ac5da0 RCX: 0000000000000000
[   46.189243][ T1175] RDX: 1ffffffff0f58bcd RSI: 1ffff11014ff2d9f RDI: ffff888091eee580
[   46.203476][ T1175] RBP: ffff8880a7fa7b00 R08: ffff8880a7f96400 R09: 0000000000000004
[   46.224957][ T1175] R10: ffffed10123ddcb5 R11: ffff888091eee5af R12: ffff888091eee580
[   46.241764][ T1175] R13: 1ffff11014ff4f47 R14: ffff888091eee590 R15: 0000000000000000
[   46.253561][ T1175] FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
[   46.271453][ T1175] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   46.281167][ T1175] CR2: ffffffffffffffd6 CR3: 00000000988d7000 CR4: 00000000001406f0
[   46.293273][ T1175] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   46.303734][ T1175] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   46.315682][ T1175] Kernel panic - not syncing: Fatal exception
[   46.327512][ T1175] Kernel Offset: disabled
[   46.336331][ T1175] Rebooting in 86400 seconds..