[....] Starting enhanced syslogd: rsyslogd[   12.794057] audit: type=1400 audit(1515278261.666:4): avc:  denied  { syslog } for  pid=3174 comm="rsyslogd" capability=34  scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1
[?25l[?1c7[ ok 8[?25h[?0c.
Starting mcstransd: 
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting file context maintaining daemon: restorecond[?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 '10.128.0.19' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   29.072705] sg_write: data in/out 486575354/302 bytes for SCSI command 0x67-- guessing data in;
[   29.072705]    program syzkaller764432 not setting count and/or reply_len properly
[   29.091155] kasan: CONFIG_KASAN_INLINE enabled
[   29.095825] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   29.103159] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   29.109358] Dumping ftrace buffer:
[   29.112862]    (ftrace buffer empty)
[   29.116540] Modules linked in:
[   29.119814] CPU: 1 PID: 3331 Comm: syzkaller764432 Not tainted 4.9.75-g06fe41f #16
[   29.127483] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   29.136801] task: ffff8801cb2d9800 task.stack: ffff8801c9868000
[   29.142820] RIP: 0010:[<ffffffff8266880c>]  [<ffffffff8266880c>] sg_read+0xd0c/0x1440
[   29.150880] RSP: 0018:ffff8801c986fa50  EFLAGS: 00010246
[   29.156294] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff826687d3
[   29.163545] RDX: 0000000000000000 RSI: 000000000000001a RDI: ffff8801c8600170
[   29.170791] RBP: ffff8801c986fb58 R08: 0000000000000000 R09: ffffed003964a411
[   29.178035] R10: 0000000000000005 R11: ffffed003964a410 R12: 0000000000001000
[   29.185273] R13: 0000000000000000 R14: ffff8801cb252060 R15: ffff8801c8600140
[   29.192518] FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000008743840
[   29.200710] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   29.206556] CR2: 0000000020701fc2 CR3: 00000001c856a000 CR4: 0000000000160670
[   29.213792] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   29.221028] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   29.228261] Stack:
[   29.230374]  ffff8801d1c98a40 ffff8801c986fa80 ffff8801c8600158 ffff88010000001a
[   29.238324]  0000000000000000 ffff8801c8600168 000000000000003e 0000000000000246
[   29.246273]  ffff8801d1678280 1ffff1003930df56 0000000020701fc2 0000000020701fe6
[   29.254216] Call Trace:
[   29.256773]  [<ffffffff82667b00>] ? sg_proc_seq_show_debug+0xd10/0xd10
[   29.263405]  [<ffffffff81642ca0>] ? fsnotify+0xf30/0xf30
[   29.268854]  [<ffffffff81bda799>] ? avc_policy_seqno+0x9/0x20
[   29.274705]  [<ffffffff8156b481>] do_loop_readv_writev.part.17+0x141/0x1e0
[   29.281685]  [<ffffffff81bd1859>] ? security_file_permission+0x89/0x1e0
[   29.288408]  [<ffffffff82667b00>] ? sg_proc_seq_show_debug+0xd10/0xd10
[   29.295037]  [<ffffffff82667b00>] ? sg_proc_seq_show_debug+0xd10/0xd10
[   29.301671]  [<ffffffff815703a2>] compat_do_readv_writev+0x522/0x760
[   29.308130]  [<ffffffff8156fe80>] ? do_pwritev+0x1a0/0x1a0
[   29.313727]  [<ffffffff838b01bc>] ? _raw_spin_unlock+0x2c/0x50
[   29.319663]  [<ffffffff814cde8e>] ? handle_mm_fault+0x6ee/0x2530
[   29.325770]  [<ffffffff814cd7a0>] ? __pmd_alloc+0x410/0x410
[   29.331447]  [<ffffffff81beb0e2>] ? selinux_file_permission+0x82/0x460
[   29.338079]  [<ffffffff815706c3>] compat_readv+0xe3/0x150
[   29.343584]  [<ffffffff81570824>] do_compat_readv+0xf4/0x1d0
[   29.349353]  [<ffffffff81570730>] ? compat_readv+0x150/0x150
[   29.355115]  [<ffffffff81572d96>] compat_SyS_readv+0x26/0x30
[   29.361627]  [<ffffffff81572d70>] ? SyS_pwritev2+0x80/0x80
[   29.367219]  [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890
[   29.373331]  [<ffffffff81003036>] ? trace_hardirqs_off_thunk+0x1a/0x1c
[   29.379969]  [<ffffffff838b2334>] entry_SYSENTER_compat+0x74/0x83
[   29.386165] Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8a 06 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5f 28 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 df 05 00 00 48 8b 1b 48 85 db 0f 84 51 03 00 
[   29.412506] RIP  [<ffffffff8266880c>] sg_read+0xd0c/0x1440
[   29.418210]  RSP <ffff8801c986fa50>
[   29.421912] ---[ end trace 42f4f1718ef8bbc6 ]---
[   29.426718] Kernel panic - not syncing: Fatal exception
[   29.432405] Dumping ftrace buffer:
[   29.435914]    (ftrace buffer empty)
[   29.439597] Kernel Offset: disabled
[   29.443189] Rebooting in 86400 seconds..