[....] Starting enhanced syslogd: rsyslogd[    9.880459] audit: type=1400 audit(1514411068.987:4): avc:  denied  { syslog } for  pid=3178 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 '10.128.0.18' (ECDSA) to the list of known hosts.
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syzkaller login: [   50.568523] kasan: CONFIG_KASAN_INLINE enabled
[   50.569305] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   50.570278] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   50.571098] Dumping ftrace buffer:
[   50.571572]    (ftrace buffer empty)
[   50.572080] Modules linked in:
[   50.572550] CPU: 0 PID: 3359 Comm: syzkaller599547 Not tainted 4.9.72-gcb7518e #10
[   50.573555] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   50.574791] task: ffff8801c8eb3000 task.stack: ffff8801c6408000
[   50.575602] RIP: 0010:[<ffffffff8144d081>]  [<ffffffff8144d081>] __free_pages+0x21/0x80
[   50.576726] RSP: 0018:ffff8801c640faa0  EFLAGS: 00010a07
[   50.577444] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff82664f9b
[   50.578405] RDX: 1bd5a9d5a0000003 RSI: 0000000000000000 RDI: dead4ead0000001c
[   50.579356] RBP: ffff8801c640fab0 R08: ffffed00390cf9f0 R09: ffff8801c867cf60
[   50.580359] R10: 0000000000000005 R11: ffffed00390cf9f0 R12: 0000000000000004
[   50.581330] R13: 0000000000000020 R14: ffff8801c7390000 R15: dffffc0000000000
[   50.582283] FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f7719b40
[   50.583356] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   50.584131] CR2: 0000000020603000 CR3: 00000001c7116000 CR4: 00000000001406f0
[   50.585083] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   50.586035] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   50.586985] Stack:
[   50.587298]  0000000000000000 ffff8801c7390158 ffff8801c640fb10 ffffffff82664fc1
[   50.588448]  ffff8801c7390170 ffffed0038e7202b ffffed0038e7202e ffff8801c7390168
[   50.595282]  dead4ead00000000 ffff8801c7390140 0000000000000000 0000000000000000
[   50.603227] Call Trace:
[   50.605782]  [<ffffffff82664fc1>] sg_remove_scat.isra.19+0x1c1/0x2d0
[   50.612238]  [<ffffffff82665385>] sg_finish_rem_req+0x2b5/0x340
[   50.618258]  [<ffffffff8266719c>] sg_read+0xa1c/0x1440
[   50.623497]  [<ffffffff82666780>] ? sg_proc_seq_show_debug+0xd10/0xd10
[   50.630171]  [<ffffffff8123a020>] ? debug_check_no_locks_freed+0x2c0/0x2c0
[   50.637149]  [<ffffffff815cef78>] ? __fget_light+0x158/0x1e0
[   50.642911]  [<ffffffff82666780>] ? sg_proc_seq_show_debug+0xd10/0xd10
[   50.649542]  [<ffffffff81569903>] __vfs_read+0x103/0x670
[   50.654956]  [<ffffffff81569800>] ? default_llseek+0x290/0x290
[   50.660893]  [<ffffffff81640e56>] ? fsnotify+0x86/0xf30
[   50.666221]  [<ffffffff81641d00>] ? fsnotify+0xf30/0xf30
[   50.671637]  [<ffffffff81bd97f9>] ? avc_policy_seqno+0x9/0x20
[   50.677485]  [<ffffffff81bea142>] ? selinux_file_permission+0x82/0x460
[   50.684116]  [<ffffffff81bd08b9>] ? security_file_permission+0x89/0x1e0
[   50.690834]  [<ffffffff8156d3b5>] ? rw_verify_area+0xe5/0x2b0
[   50.696685]  [<ffffffff8156d69e>] vfs_read+0x11e/0x380
[   50.701936]  [<ffffffff815713c9>] SyS_read+0xd9/0x1b0
[   50.707092]  [<ffffffff815712f0>] ? vfs_copy_file_range+0x740/0x740
[   50.713462]  [<ffffffff81006d9f>] ? do_fast_syscall_32+0xcf/0x890
[   50.719657]  [<ffffffff815712f0>] ? vfs_copy_file_range+0x740/0x740
[   50.726028]  [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890
[   50.732136]  [<ffffffff81003036>] ? trace_hardirqs_off_thunk+0x1a/0x1c
[   50.738769]  [<ffffffff838b0be1>] entry_SYSENTER_compat+0x51/0x60
[   50.744963] 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 
[   50.771316] RIP  [<ffffffff8144d081>] __free_pages+0x21/0x80
[   50.777190]  RSP <ffff8801c640faa0>
[   50.780989] ---[ end trace 726b2652f55c50c7 ]---
[   50.785717] Kernel panic - not syncing: Fatal exception
[   50.791441] Dumping ftrace buffer:
[   50.794955]    (ftrace buffer empty)
[   50.798631] Kernel Offset: disabled
[   50.802225] Rebooting in 86400 seconds..