[....] Starting enhanced syslogd: rsyslogd[   11.768069] audit: type=1400 audit(1514476439.189:4): avc:  denied  { syslog } for  pid=3170 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 OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.15.234' (ECDSA) to the list of known hosts.
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syzkaller login: [   32.327707] IPVS: Creating netns size=2536 id=1
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[   32.359444] IPVS: Creating netns size=2536 id=2
[   32.362777] kasan: CONFIG_KASAN_INLINE enabled
[   32.362779] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   32.362785] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   32.362789] Dumping ftrace buffer:
[   32.362791]    (ftrace buffer empty)
[   32.362794] Modules linked in:
[   32.362799] CPU: 0 PID: 3345 Comm: syzkaller430277 Not tainted 4.9.72-gcb7518e #114
[   32.362802] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   32.362805] task: ffff8801d4889800 task.stack: ffff8801c3308000
[   32.362815] RIP: 0010:[<ffffffff8144d081>]  [<ffffffff8144d081>] __free_pages+0x21/0x80
[   32.362817] RSP: 0018:ffff8801c330f9b0  EFLAGS: 00010a07
[   32.362819] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff82664f9b
[   32.362821] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
[   32.362824] RBP: ffff8801c330f9c0 R08: 0000000000000001 R09: 0000000000000001
[   32.362826] R10: 0000000000000000 R11: ffff8801d4889800 R12: 0000000000000004
[   32.362828] R13: 0000000000000020 R14: ffff8801c889c200 R15: dffffc0000000000
[   32.362831] FS:  00000000026c1880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
[   32.362833] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.362836] CR2: 0000000020dc8000 CR3: 00000001cb4a1000 CR4: 00000000001406f0
[   32.362840] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   32.362842] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   32.362843] Stack:
[   32.362849]  ffffffff838affb9 ffff8801c889c358 ffff8801c330fa20 ffffffff82664fc1
[   32.362853]  ffff8801c889c370 ffffed003911386b ffffed003911386e ffff8801c889c368
[   32.362858]  dead4ead00000000 ffff8801c889c340 0000000000000000 0000000000000000
[   32.362859] Call Trace:
[   32.362865]  [<ffffffff838affb9>] ? retint_kernel+0x2d/0x2d
[   32.362871]  [<ffffffff82664fc1>] sg_remove_scat.isra.19+0x1c1/0x2d0
[   32.362874]  [<ffffffff82665385>] sg_finish_rem_req+0x2b5/0x340
[   32.362878]  [<ffffffff82665766>] sg_new_read.isra.20+0x356/0x3e0
[   32.362881]  [<ffffffff82663793>] ? sg_idr_max_id+0x3/0x60
[   32.362885]  [<ffffffff8266703d>] sg_read+0x8bd/0x1440
[   32.362888]  [<ffffffff82666780>] ? sg_proc_seq_show_debug+0xd10/0xd10
[   32.362894]  [<ffffffff81641d00>] ? fsnotify+0xf30/0xf30
[   32.362900]  [<ffffffff81bd97f9>] ? avc_policy_seqno+0x9/0x20
[   32.362906]  [<ffffffff8156a4e1>] do_loop_readv_writev.part.17+0x141/0x1e0
[   32.362910]  [<ffffffff81bd08b9>] ? security_file_permission+0x89/0x1e0
[   32.362913]  [<ffffffff82666780>] ? sg_proc_seq_show_debug+0xd10/0xd10
[   32.362917]  [<ffffffff82666780>] ? sg_proc_seq_show_debug+0xd10/0xd10
[   32.362921]  [<ffffffff8156e350>] do_readv_writev+0x520/0x750
[   32.362925]  [<ffffffff8156de30>] ? vfs_write+0x530/0x530
[   32.362931]  [<ffffffff814ccab0>] ? __pmd_alloc+0x410/0x410
[   32.362938]  [<ffffffff810dd48c>] ? __do_page_fault+0x5ec/0xd40
[   32.362941]  [<ffffffff8156e604>] vfs_readv+0x84/0xc0
[   32.362945]  [<ffffffff8156e726>] do_readv+0xe6/0x250
[   32.362948]  [<ffffffff8156e640>] ? vfs_readv+0xc0/0xc0
[   32.362952]  [<ffffffff838af567>] ? entry_SYSCALL_64_fastpath+0x5/0xc6
[   32.362958]  [<ffffffff812397eb>] ? trace_hardirqs_on_caller+0x38b/0x590
[   32.362962]  [<ffffffff81571c17>] SyS_readv+0x27/0x30
[   32.362965]  [<ffffffff838af585>] entry_SYSCALL_64_fastpath+0x23/0xc6
[   32.363019] Code: e9 27 fc ff ff 0f 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 3d 
[   32.363023] RIP  [<ffffffff8144d081>] __free_pages+0x21/0x80
[   32.363024]  RSP <ffff8801c330f9b0>
[   32.363029] ---[ end trace 9d49329f77beb761 ]---
[   32.363032] Kernel panic - not syncing: Fatal exception
[   32.364425] Dumping ftrace buffer:
[   32.364426]    (ftrace buffer empty)
[   32.364427] Kernel Offset: disabled
[   32.721331] Rebooting in 86400 seconds..