[....] Starting enhanced syslogd: rsyslogd[ 16.831590] audit: type=1400 audit(1517426484.690:5): avc: denied { syslog } for pid=4022 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 syzkaller login: [ 19.431959] audit: type=1400 audit(1517426487.290:6): avc: denied { map } for pid=4162 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.8' (ECDSA) to the list of known hosts. executing program [ 26.929066] audit: type=1400 audit(1517426494.787:7): avc: denied { map } for pid=4176 comm="syzkaller493328" path="/root/syzkaller493328633" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 26.932276] BUG: unable to handle kernel paging request at ffffffffffffff6d [ 26.932293] IP: cgroup_mt_destroy_v1+0xe5/0x310 [ 26.932296] PGD 6a25067 P4D 6a25067 PUD 6a27067 PMD 0 [ 26.932309] Oops: 0000 [#1] SMP KASAN [ 26.932315] Dumping ftrace buffer: [ 26.932318] (ftrace buffer empty) [ 26.932320] Modules linked in: [ 26.932328] CPU: 0 PID: 4176 Comm: syzkaller493328 Not tainted 4.15.0+ #288 [ 26.932331] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.932338] RIP: 0010:cgroup_mt_destroy_v1+0xe5/0x310 [ 26.932341] RSP: 0018:ffff8801b19e7958 EFLAGS: 00010246 [ 26.932347] RAX: 0000000000000008 RBX: 1ffff1003633cf2b RCX: ffffffff847188c6 [ 26.932351] RDX: 0000000000000000 RSI: ffffffff8709b900 RDI: ffffffffffffff6d [ 26.932354] RBP: ffff8801b19e79e0 R08: 1ffff1003633cef9 R09: 0000000000000000 [ 26.932357] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffffffff01 [ 26.932361] R13: ffff8801b19e79b8 R14: dffffc0000000000 R15: ffffffff84718810 [ 26.932366] FS: 0000000000c16880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 26.932370] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.932374] CR2: ffffffffffffff6d CR3: 00000001b1f38004 CR4: 00000000001606f0 [ 26.932381] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.932384] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.932386] Call Trace: [ 26.932394] ? cgroup_mt_check_v1+0x240/0x240 [ 26.932402] ? free_percpu+0x22e/0x830 [ 26.932411] ? __alloc_percpu+0x30/0x30 [ 26.932419] ? cgroup_mt_check_v1+0x240/0x240 [ 26.932425] cleanup_match+0x14e/0x220 [ 26.932431] ? icmp_checkentry+0x80/0x80 [ 26.932445] cleanup_entry+0xcb/0x350 [ 26.932453] ? cleanup_match+0x220/0x220 [ 26.932464] ? find_next_bit+0x27/0x30 [ 26.932474] __do_replace+0x7d7/0xa90 [ 26.932489] ? compat_table_info+0x470/0x470 [ 26.932500] ? kasan_check_write+0x14/0x20 [ 26.932505] ? _copy_from_user+0x99/0x110 [ 26.932514] do_ipt_set_ctl+0x40f/0x5f0 [ 26.932523] ? translate_compat_table+0x1b90/0x1b90 [ 26.932540] ? mutex_unlock+0xd/0x10 [ 26.932549] ? nf_sockopt_find.constprop.0+0x1a7/0x220 [ 26.932559] nf_setsockopt+0x67/0xc0 [ 26.932567] ip_setsockopt+0xa1/0xb0 [ 26.932576] tcp_setsockopt+0x82/0xd0 [ 26.932587] sock_common_setsockopt+0x95/0xd0 [ 26.932597] SyS_setsockopt+0x189/0x360 [ 26.932607] ? SyS_recv+0x40/0x40 [ 26.932615] ? entry_SYSCALL_64_fastpath+0x5/0xa0 [ 26.932625] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.932633] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 26.932645] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 26.932649] RIP: 0033:0x4408a9 [ 26.932652] RSP: 002b:00007ffddd061cc8 EFLAGS: 00000207 ORIG_RAX: 0000000000000036 [ 26.932659] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 00000000004408a9 [ 26.932662] RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000004 [ 26.932665] RBP: faaff2414ccfc19e R08: 00000000000012f0 R09: 0000000000000000 [ 26.932669] R10: 000000002000b000 R11: 0000000000000207 R12: 886f734548d4d66b [ 26.932672] R13: ffffffffffffff01 R14: 0000000000000000 R15: 0000000000000000 [ 26.932686] Code: 6c 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 a6 01 00 00 <41> f6 44 24 6c 01 74 2e e8 be 06 ff fc 48 b8 00 00 00 00 00 fc [ 26.932798] RIP: cgroup_mt_destroy_v1+0xe5/0x310 RSP: ffff8801b19e7958 [ 26.932800] CR2: ffffffffffffff6d [ 26.932808] ---[ end trace bfd8c145aa41ae03 ]--- [ 26.932811] Kernel panic - not syncing: Fatal exception [ 26.955393] Dumping ftrace buffer: [ 26.955396] (ftrace buffer empty) [ 26.955398] Kernel Offset: disabled [ 27.297568] Rebooting in 86400 seconds..