INIT: Entering runlevel: 2

[info] Using makefile-style concurrent boot in runlevel 2.
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added 'ci-upstream-mmots-kasan-gce-4,10.128.0.34' (ECDSA) to the list of known hosts.
2017/12/03 19:51:32 parsed 1 programs
2017/12/03 19:51:32 executed programs: 0
syzkaller login: [   54.391827] BUG: unable to handle kernel NULL pointer dereference at 00000000c58b0b19
[   54.392973] IP: sha512_mb_mgr_get_comp_job_avx2+0x6e/0xee
[   54.393728] PGD 1cb562067 P4D 1cb562067 PUD 1cb563067 PMD 0 
[   54.394501] Oops: 0002 [#1] SMP KASAN
[   54.395008] Dumping ftrace buffer:
[   54.395480]    (ftrace buffer empty)
[   54.395974] Modules linked in:
[   54.396406] CPU: 1 PID: 24 Comm: kworker/1:1 Not tainted 4.15.0-rc1-mm1+ #29
[   54.397347] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   54.398568] Workqueue: crypto mcryptd_queue_worker
[   54.399622] task: 0000000018ff7174 task.stack: 000000004c6e7fb4
[   54.400432] RIP: 0010:sha512_mb_mgr_get_comp_job_avx2+0x6e/0xee
[   54.401228] RSP: 0018:ffff8801d9d171b8 EFLAGS: 00010002
[   54.401935] RAX: 0000000000000000 RBX: ffff8801d5aa38d0 RCX: 0000000000000000
[   54.402884] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff8801d5aa3780
[   54.403833] RBP: ffff8801d9d171e0 R08: 0000000100000000 R09: 0000000000000001
[   54.404784] R10: 0000000000000002 R11: 0000000000000003 R12: ffff8801d5aa3780
[   54.405734] R13: 0000000000000282 R14: ffff8801cc115760 R15: ffffe8ffffd10630
[   54.406687] FS:  0000000000000000(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000
[   54.407763] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   54.408536] CR2: 0000000000000060 CR3: 00000001cb55f000 CR4: 00000000001406e0
[   54.409504] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   54.410476] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   54.411427] Call Trace:
[   54.411782]  ? sha512_ctx_mgr_get_comp_ctx+0x51/0x80
[   54.412460]  sha_complete_job+0x276/0x830
[   54.416574]  ? lock_release+0xda0/0xda0
[   54.420511]  ? mcryptd_hash_init_tfm+0x110/0x110
[   54.425233]  ? sha512_ctx_mgr_get_comp_ctx+0x80/0x80
[   54.430303]  ? mark_held_locks+0xb2/0x100
[   54.434419]  ? _raw_spin_unlock_irqrestore+0x31/0xba
[   54.439485]  ? __kernel_fpu_end+0xad/0x180
[   54.443682]  ? fpu__restore+0x8c0/0x8c0
[   54.447625]  ? trace_hardirqs_on+0xd/0x10
[   54.451737]  ? sha_finish_walk+0x1f4/0x360
[   54.455939]  sha512_mb_update+0x2f6/0x530
[   54.460051]  ? sha512_mb_final+0x330/0x330
[   54.464250]  ? __local_bh_enable_ip+0x121/0x230
[   54.468884]  mcryptd_hash_update+0xcd/0x1c0
[   54.473169]  mcryptd_queue_worker+0xfe/0x660
[   54.477550]  ? mcryptd_create+0xab0/0xab0
[   54.481749]  ? __lock_is_held+0xbc/0x140
[   54.485782]  process_one_work+0xbfd/0x1bc0
[   54.489987]  ? pwq_dec_nr_in_flight+0x450/0x450
[   54.494620]  ? finish_task_switch+0x1d3/0x740
[   54.499074]  ? finish_task_switch+0x1aa/0x740
[   54.503547]  ? __sched_text_start+0x8/0x8
[   54.507660]  ? debug_check_no_locks_freed+0x3d0/0x3d0
[   54.512816]  ? select_task_rq_fair+0x2770/0x2770
[   54.517535]  ? check_noncircular+0x20/0x20
[   54.521734]  ? find_held_lock+0x39/0x1d0
[   54.525763]  ? lock_acquire+0x1d5/0x580
[   54.529698]  ? worker_thread+0x4a3/0x1990
[   54.533811]  ? lock_release+0xda0/0xda0
[   54.537747]  ? check_noncircular+0x20/0x20
[   54.541947]  ? do_raw_spin_trylock+0x190/0x190
[   54.546500]  worker_thread+0x223/0x1990
[   54.550449]  ? process_one_work+0x1bc0/0x1bc0
[   54.554907]  ? _raw_spin_unlock_irq+0x27/0x70
[   54.559368]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   54.564346]  ? trace_hardirqs_on+0xd/0x10
[   54.568457]  ? mmdrop+0x18/0x30
[   54.571699]  ? finish_task_switch+0x1f6/0x740
[   54.576158]  ? copy_overflow+0x20/0x20
[   54.580012]  ? __schedule+0x8f3/0x2060
[   54.583861]  ? check_noncircular+0x20/0x20
[   54.588064]  ? find_held_lock+0x39/0x1d0
[   54.592091]  ? find_held_lock+0x39/0x1d0
[   54.596122]  ? lock_downgrade+0x980/0x980
[   54.600233]  ? default_wake_function+0x30/0x50
[   54.604782]  ? __schedule+0x2060/0x2060
[   54.608718]  ? do_wait_intr+0x3e0/0x3e0
[   54.612660]  ? do_raw_spin_trylock+0x190/0x190
[   54.617209]  ? _raw_spin_unlock_irqrestore+0x31/0xba
[   54.622275]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   54.627256]  ? trace_hardirqs_on+0xd/0x10
[   54.631366]  ? __kthread_parkme+0x175/0x240
[   54.635650]  kthread+0x37a/0x440
[   54.638981]  ? process_one_work+0x1bc0/0x1bc0
[   54.643438]  ? kthread_stop+0x7b0/0x7b0
[   54.647379]  ret_from_fork+0x24/0x30
[   54.651062] Code: 49 0f 42 d3 48 f7 c2 f0 ff ff ff 0f 85 9a 00 00 00 48 83 e2 0f 48 6b da 08 48 8d 9c 1f 48 01 00 00 48 8b 03 48 c7 03 00 00 00 00 <c7> 40 60 02 00 00 00 48 8b 9f 40 01 00 00 48 c1 e3 08 48 09 d3 
[   54.670121] RIP: sha512_mb_mgr_get_comp_job_avx2+0x6e/0xee RSP: ffff8801d9d171b8
[   54.677615] CR2: 0000000000000060
[   54.681048] ---[ end trace 2003a6fbb2bb168e ]---
[   54.685766] Kernel panic - not syncing: Fatal exception
[   54.691125] Dumping ftrace buffer:
[   54.694640]    (ftrace buffer empty)
[   54.698312] Kernel Offset: disabled
[   54.701996] Rebooting in 86400 seconds..