[....] Starting enhanced syslogd: rsyslogd[   12.580655] audit: type=1400 audit(1514438946.785:4): avc:  denied  { syslog } for  pid=3172 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 '10.128.0.31' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   36.202462] sg_write: data in/out 2127708969/3 bytes for SCSI command 0xe3-- guessing data in;
[   36.202462]    program syzkaller260179 not setting count and/or reply_len properly
[   36.220528] kasan: CONFIG_KASAN_INLINE enabled
[   36.225088] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   36.232488] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   36.238698] Dumping ftrace buffer:
[   36.242204]    (ftrace buffer empty)
[   36.245884] Modules linked in:
[   36.249157] CPU: 1 PID: 3339 Comm: syzkaller260179 Not tainted 4.9.72-gcb7518e #10
[   36.256831] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   36.266153] task: ffff8801c96ec800 task.stack: ffff8801c8290000
[   36.272173] RIP: 0010:[<ffffffff8266748c>]  [<ffffffff8266748c>] sg_read+0xd0c/0x1440
[   36.280226] RSP: 0018:ffff8801c8297a50  EFLAGS: 00010246
[   36.285638] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff82667453
[   36.292880] RDX: 0000000000000000 RSI: 0000000000000012 RDI: ffff8801c88dc370
[   36.300114] RBP: ffff8801c8297b58 R08: 0000000000000000 R09: ffffed00394ad805
[   36.307348] R10: 0000000000000005 R11: ffffed00394ad804 R12: 0000000000001000
[   36.314583] R13: 0000000000000000 R14: ffff8801ca56c000 R15: ffff8801c88dc340
[   36.321830] FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000008986840
[   36.330020] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   36.335878] CR2: 0000000020477000 CR3: 00000001c808c000 CR4: 00000000001406e0
[   36.343116] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   36.350352] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   36.357683] Stack:
[   36.359797]  ffff8801d55eca40 ffff8801c8297a80 ffff8801c88dc358 ffff880100000012
[   36.367751]  0000000000000000 ffff8801c88dc368 0000000000000036 0000000000000246
[   36.375731]  ffff8801d1510a00 1ffff10039052f56 0000000020477000 0000000020477024
[   36.383691] Call Trace:
[   36.386247]  [<ffffffff82666780>] ? sg_proc_seq_show_debug+0xd10/0xd10
[   36.392897]  [<ffffffff81641d00>] ? fsnotify+0xf30/0xf30
[   36.398314]  [<ffffffff81bd97f9>] ? avc_policy_seqno+0x9/0x20
[   36.404166]  [<ffffffff8156a4e1>] do_loop_readv_writev.part.17+0x141/0x1e0
[   36.411145]  [<ffffffff81bd08b9>] ? security_file_permission+0x89/0x1e0
[   36.417863]  [<ffffffff82666780>] ? sg_proc_seq_show_debug+0xd10/0xd10
[   36.424494]  [<ffffffff82666780>] ? sg_proc_seq_show_debug+0xd10/0xd10
[   36.431129]  [<ffffffff8156f402>] compat_do_readv_writev+0x522/0x760
[   36.437586]  [<ffffffff8156eee0>] ? do_pwritev+0x1a0/0x1a0
[   36.443179]  [<ffffffff838aecdc>] ? _raw_spin_unlock+0x2c/0x50
[   36.449130]  [<ffffffff814cd19e>] ? handle_mm_fault+0x6ee/0x2530
[   36.455251]  [<ffffffff812397eb>] ? trace_hardirqs_on_caller+0x38b/0x590
[   36.462057]  [<ffffffff814ccab0>] ? __pmd_alloc+0x410/0x410
[   36.467736]  [<ffffffff8156f723>] compat_readv+0xe3/0x150
[   36.473250]  [<ffffffff8156f884>] do_compat_readv+0xf4/0x1d0
[   36.479023]  [<ffffffff8156f790>] ? compat_readv+0x150/0x150
[   36.484787]  [<ffffffff81571df6>] compat_SyS_readv+0x26/0x30
[   36.490549]  [<ffffffff81571dd0>] ? SyS_pwritev2+0x80/0x80
[   36.496141]  [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890
[   36.502261]  [<ffffffff81003036>] ? trace_hardirqs_off_thunk+0x1a/0x1c
[   36.508902]  [<ffffffff838b0be1>] entry_SYSENTER_compat+0x51/0x60
[   36.515096] 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 
[   36.541463] RIP  [<ffffffff8266748c>] sg_read+0xd0c/0x1440
[   36.547199]  RSP <ffff8801c8297a50>
[   36.550912] ---[ end trace 55abce9779cab57c ]---
[   36.555640] Kernel panic - not syncing: Fatal exception
[   36.561506] Dumping ftrace buffer:
[   36.565040]    (ftrace buffer empty)
[   36.568721] Kernel Offset: disabled
[   36.572314] Rebooting in 86400 seconds..