[....] Starting enhanced syslogd: rsyslogd[ 13.221327] audit: type=1400 audit(1517082048.353:5): avc: denied { syslog } for pid=3535 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: [ 19.718155] audit: type=1400 audit(1517082054.849:6): avc: denied { map } for pid=3675 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 '10.128.0.62' (ECDSA) to the list of known hosts. executing program [ 26.082418] audit: type=1400 audit(1517082061.214:7): avc: denied { map } for pid=3689 comm="syzkaller757271" path="/root/syzkaller757271366" 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 [ 26.086596] ipt_CLUSTERIP: Please specify destination IP [ 26.086617] kasan: CONFIG_KASAN_INLINE enabled [ 26.086621] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 26.086632] general protection fault: 0000 [#1] SMP KASAN [ 26.086637] Dumping ftrace buffer: [ 26.086641] (ftrace buffer empty) [ 26.086643] Modules linked in: [ 26.086652] CPU: 1 PID: 3689 Comm: syzkaller757271 Not tainted 4.15.0-rc9+ #283 [ 26.086656] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.086673] RIP: 0010:cgroup_mt_destroy_v1+0xcc/0x310 [ 26.086676] RSP: 0018:ffff8801d9097848 EFLAGS: 00010203 [ 26.086682] RAX: dffffc0000000000 RBX: 1ffff1003b212f09 RCX: ffffffff847058d6 [ 26.086686] RDX: 000000000000000d RSI: ffffffff87099dc0 RDI: 000000000000006d [ 26.086689] RBP: ffff8801d90978d0 R08: ffffed003b212f4d R09: 0000000000000000 [ 26.086693] R10: ffffffff88178f20 R11: 0000000000000000 R12: 0000000000000001 [ 26.086697] R13: ffff8801d90978a8 R14: dffffc0000000000 R15: ffffffff84705820 [ 26.086703] FS: 0000000000c6f880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 26.086706] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.086710] CR2: 00005639e6a78110 CR3: 00000001d9514006 CR4: 00000000001606e0 [ 26.086717] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.086721] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.086722] Call Trace: [ 26.086731] ? cgroup_mt_check_v1+0x240/0x240 [ 26.086741] ? free_modinfo_version+0x70/0x70 [ 26.086751] ? mutex_unlock+0xd/0x10 [ 26.086761] ? cgroup_mt_check_v1+0x240/0x240 [ 26.086769] cleanup_match+0x14e/0x220 [ 26.086776] ? icmp_checkentry+0x80/0x80 [ 26.086791] find_check_entry.isra.8+0x513/0xcb0 [ 26.086807] ? ipt_do_table+0x1860/0x1860 [ 26.086819] ? mark_held_locks+0xaf/0x100 [ 26.086827] ? kfree+0xf0/0x260 [ 26.086837] ? trace_hardirqs_on+0xd/0x10 [ 26.086850] translate_table+0xed1/0x1610 [ 26.086871] ? alloc_counters.isra.11+0x7d0/0x7d0 [ 26.086881] ? kasan_check_write+0x14/0x20 [ 26.086890] ? _copy_from_user+0x99/0x110 [ 26.086899] do_ipt_set_ctl+0x370/0x5f0 [ 26.086910] ? translate_compat_table+0x1b90/0x1b90 [ 26.086925] ? mutex_unlock+0xd/0x10 [ 26.086934] ? nf_sockopt_find.constprop.0+0x1a7/0x220 [ 26.086944] nf_setsockopt+0x67/0xc0 [ 26.086955] ip_setsockopt+0xa1/0xb0 [ 26.086964] tcp_setsockopt+0x82/0xd0 [ 26.086975] sock_common_setsockopt+0x95/0xd0 [ 26.086984] SyS_setsockopt+0x189/0x360 [ 26.086994] ? SyS_recv+0x40/0x40 [ 26.087006] ? entry_SYSCALL_64_fastpath+0x5/0xa0 [ 26.087015] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.087028] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 26.087041] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 26.087046] RIP: 0033:0x440999 [ 26.087049] RSP: 002b:00007fff016f0488 EFLAGS: 00000203 ORIG_RAX: 0000000000000036 [ 26.087055] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 0000000000440999 [ 26.087059] RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 [ 26.087062] RBP: 00000000006cc018 R08: 0000000000001328 R09: 0000000000000000 [ 26.087066] R10: 00000000203a2000 R11: 0000000000000203 R12: 00000000004022c0 [ 26.087069] R13: 0000000000402350 R14: 0000000000000000 R15: 0000000000000000 [ 26.087083] Code: 02 00 00 4d 8b a4 24 08 10 00 00 4d 85 e4 74 3c e8 9a d2 ff 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 [ 26.087205] RIP: cgroup_mt_destroy_v1+0xcc/0x310 RSP: ffff8801d9097848 [ 26.087236] ---[ end trace 576a5ef2516655e0 ]--- [ 26.087240] Kernel panic - not syncing: Fatal exception [ 26.108705] Dumping ftrace buffer: [ 26.108708] (ftrace buffer empty) [ 26.108711] Kernel Offset: disabled [ 26.459476] Rebooting in 86400 seconds..