[....] Starting enhanced syslogd: rsyslogd[ 12.998448] audit: type=1400 audit(1517110110.315:5): avc: denied { syslog } for pid=3524 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 syzkaller login: [ 19.035146] audit: type=1400 audit(1517110116.351:6): avc: denied { map } for pid=3664 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 '10.128.15.222' (ECDSA) to the list of known hosts. executing program [ 25.310750] audit: type=1400 audit(1517110122.627:7): avc: denied { map } for pid=3678 comm="syzkaller656826" path="/root/syzkaller656826707" 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 [ 25.313373] ipt_CLUSTERIP: Please specify destination IP [ 25.313387] kasan: CONFIG_KASAN_INLINE enabled [ 25.313390] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 25.313396] general protection fault: 0000 [#1] SMP KASAN [ 25.313400] Dumping ftrace buffer: [ 25.313402] (ftrace buffer empty) [ 25.313404] Modules linked in: [ 25.313410] CPU: 1 PID: 3678 Comm: syzkaller656826 Not tainted 4.15.0-rc9+ #212 [ 25.313413] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.313423] RIP: 0010:cgroup_mt_destroy_v1+0xcc/0x310 [ 25.313425] RSP: 0018:ffff8801d94af848 EFLAGS: 00010203 [ 25.313429] RAX: dffffc0000000000 RBX: 1ffff1003b295f09 RCX: ffffffff8473cb56 [ 25.313431] RDX: 000000000000000d RSI: ffffffff8709b4c0 RDI: 000000000000006d [ 25.313434] RBP: ffff8801d94af8d0 R08: ffffed003b295f4d R09: 0000000000000000 [ 25.313436] R10: ffffffff88181ee0 R11: 0000000000000000 R12: 0000000000000001 [ 25.313438] R13: ffff8801d94af8a8 R14: dffffc0000000000 R15: ffffffff8473caa0 [ 25.313442] FS: 000000000107c880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 25.313445] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.313447] CR2: 0000000020012fc0 CR3: 00000001ba5ec004 CR4: 00000000001606e0 [ 25.313452] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.313454] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.313455] Call Trace: [ 25.313461] ? cgroup_mt_check_v1+0x240/0x240 [ 25.313468] ? free_modinfo_version+0x70/0x70 [ 25.313473] ? mutex_unlock+0xd/0x10 [ 25.313479] ? cgroup_mt_check_v1+0x240/0x240 [ 25.313485] cleanup_match+0x14e/0x220 [ 25.313489] ? icmp_checkentry+0x80/0x80 [ 25.313499] find_check_entry.isra.8+0x513/0xcb0 [ 25.313508] ? ipt_do_table+0x1860/0x1860 [ 25.313516] ? mark_held_locks+0xaf/0x100 [ 25.313523] ? kfree+0xf0/0x260 [ 25.313529] ? trace_hardirqs_on+0xd/0x10 [ 25.313537] translate_table+0xed1/0x1610 [ 25.313550] ? alloc_counters.isra.11+0x7d0/0x7d0 [ 25.313556] ? kasan_check_write+0x14/0x20 [ 25.313561] ? _copy_from_user+0x99/0x110 [ 25.313567] do_ipt_set_ctl+0x370/0x5f0 [ 25.313573] ? translate_compat_table+0x1b90/0x1b90 [ 25.313582] ? mutex_unlock+0xd/0x10 [ 25.313588] ? nf_sockopt_find.constprop.0+0x1a7/0x220 [ 25.313594] nf_setsockopt+0x67/0xc0 [ 25.313601] ip_setsockopt+0xa1/0xb0 [ 25.313608] tcp_setsockopt+0x82/0xd0 [ 25.313616] sock_common_setsockopt+0x95/0xd0 [ 25.313623] SyS_setsockopt+0x189/0x360 [ 25.313629] ? SyS_recv+0x40/0x40 [ 25.313634] ? entry_SYSCALL_64_fastpath+0x5/0xa0 [ 25.313639] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.313646] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.313653] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 25.313657] RIP: 0033:0x440999 [ 25.313658] RSP: 002b:00007ffe3e6eb0c8 EFLAGS: 00000203 ORIG_RAX: 0000000000000036 [ 25.313662] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 0000000000440999 [ 25.313664] RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 [ 25.313666] RBP: 00000000006cc018 R08: 0000000000001328 R09: 0000000000000000 [ 25.313669] R10: 00000000203a2000 R11: 0000000000000203 R12: 00000000004022c0 [ 25.313671] R13: 0000000000402350 R14: 0000000000000000 R15: 0000000000000000 [ 25.313680] Code: 02 00 00 4d 8b a4 24 08 10 00 00 4d 85 e4 74 3c e8 8a 68 fc fc 49 8d 7c 24 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 [ 25.313748] RIP: cgroup_mt_destroy_v1+0xcc/0x310 RSP: ffff8801d94af848 [ 25.313754] ---[ end trace 9ed0ef16a1d9ee41 ]--- [ 25.313756] Kernel panic - not syncing: Fatal exception [ 25.337005] Dumping ftrace buffer: [ 25.337012] (ftrace buffer empty) [ 25.337014] Kernel Offset: disabled [ 25.687911] Rebooting in 86400 seconds..