[....] Starting enhanced syslogd: rsyslogd[   10.828346] audit: type=1400 audit(1514391055.384:4): avc:  denied  { syslog } for  pid=3177 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 periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
Starting mcstransd: 
[....] 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 '10.128.15.199' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   22.631844] sg_write: data in/out 1562545400/3 bytes for SCSI command 0x0-- guessing data in;
[   22.631844]    program syzkaller163758 not setting count and/or reply_len properly
[   22.635742] kasan: CONFIG_KASAN_INLINE enabled
[   22.636354] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   22.637505] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   22.638352] Dumping ftrace buffer:
[   22.638834]    (ftrace buffer empty)
[   22.639327] Modules linked in:
[   22.639794] CPU: 0 PID: 3332 Comm: syzkaller163758 Not tainted 4.9.72-gcb7518e #10
[   22.640801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   22.642046] task: ffff8801c98f0000 task.stack: ffff8801c83a0000
[   22.642842] RIP: 0010:[<ffffffff8266748c>]  [<ffffffff8266748c>] sg_read+0xd0c/0x1440
[   22.643962] RSP: 0018:ffff8801c83a7a50  EFLAGS: 00010246
[   22.644700] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff82667453
[   22.645668] RDX: 0000000000000000 RSI: 0000000000000fdc RDI: ffff8801c8b7c370
[   22.646633] RBP: ffff8801c83a7b58 R08: 0000000000000000 R09: ffffed003957907d
[   22.647588] R10: 0000000000000005 R11: ffffed003957907c R12: 0000000000001000
[   22.648558] R13: 0000000000000000 R14: ffff8801cabc83c0 R15: ffff8801c8b7c340
[   22.649510] FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000009d61840
[   22.650581] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   22.651354] CR2: 0000000020563000 CR3: 00000001c8e96000 CR4: 00000000001406f0
[   22.652327] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   22.659562] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   22.666794] Stack:
[   22.668905]  ffff8801d4de8580 ffff8801c83a7a80 ffff8801c8b7c358 ffff880100000fdc
[   22.676847]  0000000000000000 ffff8801c8b7c368 0000000000001000 0000000000000246
[   22.684790]  ffff8801d15c6000 1ffff10039074f56 0000000020563000 0000000020563024
[   22.692739] Call Trace:
[   22.695297]  [<ffffffff82666780>] ? sg_proc_seq_show_debug+0xd10/0xd10
[   22.701927]  [<ffffffff81641d00>] ? fsnotify+0xf30/0xf30
[   22.707343]  [<ffffffff81bd97f9>] ? avc_policy_seqno+0x9/0x20
[   22.713192]  [<ffffffff8156a4e1>] do_loop_readv_writev.part.17+0x141/0x1e0
[   22.720168]  [<ffffffff81bd08b9>] ? security_file_permission+0x89/0x1e0
[   22.726935]  [<ffffffff82666780>] ? sg_proc_seq_show_debug+0xd10/0xd10
[   22.733563]  [<ffffffff82666780>] ? sg_proc_seq_show_debug+0xd10/0xd10
[   22.740194]  [<ffffffff8156f402>] compat_do_readv_writev+0x522/0x760
[   22.746652]  [<ffffffff8156eee0>] ? do_pwritev+0x1a0/0x1a0
[   22.752241]  [<ffffffff838aecdc>] ? _raw_spin_unlock+0x2c/0x50
[   22.758180]  [<ffffffff814cd19e>] ? handle_mm_fault+0x6ee/0x2530
[   22.764288]  [<ffffffff814ccab0>] ? __pmd_alloc+0x410/0x410
[   22.769964]  [<ffffffff81bea142>] ? selinux_file_permission+0x82/0x460
[   22.776593]  [<ffffffff8156f723>] compat_readv+0xe3/0x150
[   22.782101]  [<ffffffff8156f884>] do_compat_readv+0xf4/0x1d0
[   22.787861]  [<ffffffff8156f790>] ? compat_readv+0x150/0x150
[   22.793621]  [<ffffffff81571df6>] compat_SyS_readv+0x26/0x30
[   22.799380]  [<ffffffff81571dd0>] ? SyS_pwritev2+0x80/0x80
[   22.804972]  [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890
[   22.811081]  [<ffffffff81003036>] ? trace_hardirqs_off_thunk+0x1a/0x1c
[   22.817709]  [<ffffffff838b0be1>] entry_SYSENTER_compat+0x51/0x60
[   22.824305] 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 
[   22.850611] RIP  [<ffffffff8266748c>] sg_read+0xd0c/0x1440
[   22.856311]  RSP <ffff8801c83a7a50>
[   22.860285] ---[ end trace 7022138f971df58b ]---
[   22.865024] Kernel panic - not syncing: Fatal exception
[   22.870826] Dumping ftrace buffer:
[   22.874337]    (ftrace buffer empty)
[   22.878015] Kernel Offset: disabled
[   22.881621] Rebooting in 86400 seconds..