[....] Starting enhanced syslogd: rsyslogd[ 12.281799] audit: type=1400 audit(1515959361.829:5): avc: denied { syslog } for pid=3501 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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: [ 19.945056] audit: type=1400 audit(1515959369.492:6): avc: denied { map } for pid=3641 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 '10.128.15.224' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 35.415561] audit: type=1400 audit(1515959384.963:7): avc: denied { map } for pid=3658 comm="syzkaller420566" path="/root/syzkaller420566475" 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 RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 35.688312] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument executing program [ 36.023729] audit: type=1400 audit(1515959385.571:8): avc: denied { sys_admin } for pid=3658 comm="syzkaller420566" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 36.055317] audit: type=1400 audit(1515959385.603:9): avc: denied { sys_chroot } for pid=3813 comm="syzkaller420566" capability=18 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 36.079872] audit: type=1400 audit(1515959385.604:10): avc: denied { map_create } for pid=3813 comm="syzkaller420566" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=bpf permissive=1 [ 36.102714] audit: type=1400 audit(1515959385.604:11): avc: denied { map_read map_write } for pid=3813 comm="syzkaller420566" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=bpf permissive=1 [ 36.145226] kasan: CONFIG_KASAN_INLINE enabled [ 36.149874] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 36.157363] general protection fault: 0000 [#1] SMP KASAN [ 36.163045] Dumping ftrace buffer: [ 36.166551] (ftrace buffer empty) [ 36.170228] Modules linked in: [ 36.173390] CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 4.15.0-rc7+ #188 [ 36.180278] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.189613] Workqueue: events bpf_map_free_deferred [ 36.194612] RIP: 0010:cgroup_fd_array_put_ptr+0x71/0x2a0 [ 36.200034] RSP: 0018:ffff8801d9fbf490 EFLAGS: 00010a02 [ 36.205369] RAX: 1ae00039a00001ea RBX: 1ffff1003b3f7e92 RCX: ffffffff8181cdd5 [ 36.212605] RDX: 0000000000000000 RSI: ffff8801d4ee74a4 RDI: d70001cd00000f51 [ 36.219926] RBP: ffff8801d9fbf518 R08: 1ffff1003b3f7e70 R09: 0000000000000000 [ 36.227162] R10: 0000000000000000 R11: 0000000000000000 R12: d70001cd00000ee5 [ 36.234397] R13: ffff8801d9fbf4f0 R14: dffffc0000000000 R15: d70001cd00000ee5 [ 36.241896] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 36.250087] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.255931] CR2: 00000000203e2fe4 CR3: 0000000006822004 CR4: 00000000001606e0 [ 36.263167] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.270404] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.277638] Call Trace: [ 36.280202] ? array_of_map_free+0x180/0x180 [ 36.284583] ? kfree+0xf0/0x260 [ 36.287835] ? selinux_bpf_map_free+0x39/0x50 [ 36.292298] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 36.297282] cgroup_fd_array_free+0xd2/0x150 [ 36.301660] bpf_map_free_deferred+0xb0/0xe0 [ 36.306036] process_one_work+0xbbf/0x1b10 [ 36.310233] ? trace_hardirqs_on+0xd/0x10 [ 36.314351] ? pwq_dec_nr_in_flight+0x450/0x450 [ 36.318990] ? __schedule+0x8f3/0x2060 [ 36.322842] ? _raw_spin_unlock_irqrestore+0xa6/0xba [ 36.327917] ? check_noncircular+0x20/0x20 [ 36.332118] ? __wake_up_common_lock+0x1c2/0x310 [ 36.336853] ? lock_downgrade+0x980/0x980 [ 36.340974] ? do_wait_intr_irq+0x3e0/0x3e0 [ 36.345268] ? lock_acquire+0x1d5/0x580 [ 36.349206] ? lock_acquire+0x1d5/0x580 [ 36.353152] ? worker_thread+0x4a3/0x1990 [ 36.357268] ? lock_downgrade+0x980/0x980 [ 36.361381] ? lock_release+0xa40/0xa40 [ 36.365321] ? try_to_del_timer_sync+0xe0/0x130 [ 36.369956] ? do_raw_spin_trylock+0x190/0x190 [ 36.374517] worker_thread+0x223/0x1990 [ 36.378488] ? process_one_work+0x1b10/0x1b10 [ 36.382953] ? _raw_spin_unlock_irq+0x27/0x70 [ 36.387414] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 36.392398] ? trace_hardirqs_on+0xd/0x10 [ 36.396512] ? finish_task_switch+0x1d3/0x740 [ 36.400980] ? finish_task_switch+0x1aa/0x740 [ 36.405451] ? copy_overflow+0x20/0x20 [ 36.409310] ? __schedule+0x8f3/0x2060 [ 36.413175] ? find_held_lock+0x35/0x1d0 [ 36.417219] ? find_held_lock+0x35/0x1d0 [ 36.421251] ? complete+0x62/0x80 [ 36.424673] ? __schedule+0x2060/0x2060 [ 36.428619] ? do_wait_intr_irq+0x3e0/0x3e0 [ 36.432910] ? __lockdep_init_map+0xe4/0x650 [ 36.437285] ? do_raw_spin_trylock+0x190/0x190 [ 36.441843] ? lockdep_init_map+0x9/0x10 [ 36.445879] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 36.450949] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 36.455930] ? trace_hardirqs_on+0xd/0x10 [ 36.460042] ? __kthread_parkme+0x175/0x240 [ 36.464339] kthread+0x33c/0x400 [ 36.467675] ? process_one_work+0x1b10/0x1b10 [ 36.472145] ? kthread_stop+0x7a0/0x7a0 [ 36.476085] ret_from_fork+0x24/0x30 [ 36.479768] Code: 45 88 70 cd 81 81 c7 00 f1 f1 f1 f1 c7 40 04 00 f2 f2 f2 c7 40 08 f3 f3 f3 f3 e8 6b 50 ee ff 49 8d 7c 24 6c 48 89 f8 48 c1 e8 03 <42> 0f b6 14 30 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f [ 36.498839] RIP: cgroup_fd_array_put_ptr+0x71/0x2a0 RSP: ffff8801d9fbf490 [ 36.505819] ---[ end trace 758ee18d9ced7683 ]--- [ 36.510575] Kernel panic - not syncing: Fatal exception [ 36.516347] Dumping ftrace buffer: [ 36.519861] (ftrace buffer empty) [ 36.523537] Kernel Offset: disabled [ 36.527128] Rebooting in 86400 seconds..