[....] Starting enhanced syslogd: rsyslogd[ 12.911799] audit: type=1400 audit(1516131132.344:5): avc: denied { syslog } for pid=3500 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: [ 17.541733] audit: type=1400 audit(1516131136.974:6): avc: denied { map } for pid=3640 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 '10.128.0.25' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 30.437460] audit: type=1400 audit(1516131149.870:7): avc: denied { map } for pid=3656 comm="syzkaller026244" path="/root/syzkaller026244656" 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 [ 30.656845] 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 [ 30.992193] audit: type=1400 audit(1516131150.424:8): avc: denied { sys_admin } for pid=3656 comm="syzkaller026244" 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 [ 31.019463] audit: type=1400 audit(1516131150.452:9): avc: denied { sys_chroot } for pid=3784 comm="syzkaller026244" 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 [ 31.044134] audit: type=1400 audit(1516131150.452:10): avc: denied { map_create } for pid=3784 comm="syzkaller026244" 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 [ 31.067267] audit: type=1400 audit(1516131150.452:11): avc: denied { map_read map_write } for pid=3784 comm="syzkaller026244" 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 [ 31.096192] kasan: CONFIG_KASAN_INLINE enabled [ 31.100840] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 31.108323] general protection fault: 0000 [#1] SMP KASAN [ 31.113842] Dumping ftrace buffer: [ 31.117355] (ftrace buffer empty) [ 31.121037] Modules linked in: [ 31.124204] CPU: 1 PID: 1550 Comm: kworker/1:2 Not tainted 4.15.0-rc7+ #191 [ 31.131277] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.140608] Workqueue: events bpf_map_free_deferred [ 31.145601] RIP: 0010:cgroup_fd_array_put_ptr+0x71/0x2a0 [ 31.151016] RSP: 0018:ffff8801d35c7490 EFLAGS: 00010a03 [ 31.156348] RAX: 1ca80039a00001e6 RBX: 1ffff1003a6b8e92 RCX: ffffffff8181cd95 [ 31.163593] RDX: 0000000000000000 RSI: ffff8801d8a2ace4 RDI: e54001cd00000f34 [ 31.170833] RBP: ffff8801d35c7518 R08: 1ffff1003a6b8e70 R09: 0000000000000000 [ 31.178071] R10: 0000000000000000 R11: 0000000000000000 R12: e54001cd00000ec8 [ 31.186096] R13: ffff8801d35c74f0 R14: dffffc0000000000 R15: e54001cd00000ec8 [ 31.193345] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 31.201541] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.207391] CR2: 00000000203e2fe4 CR3: 0000000006822002 CR4: 00000000001606e0 [ 31.214639] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.221877] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.229120] Call Trace: [ 31.231683] ? array_of_map_free+0x180/0x180 [ 31.236062] ? kfree+0xf0/0x260 [ 31.239314] ? selinux_bpf_map_free+0x39/0x50 [ 31.243792] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.248787] cgroup_fd_array_free+0xd2/0x150 [ 31.253175] bpf_map_free_deferred+0xb0/0xe0 [ 31.257557] process_one_work+0xbbf/0x1b10 [ 31.261761] ? put_task_stack+0x116/0x270 [ 31.265886] ? pwq_dec_nr_in_flight+0x450/0x450 [ 31.270529] ? __schedule+0x8f3/0x2060 [ 31.274383] ? update_curr+0x47b/0xa60 [ 31.278243] ? check_noncircular+0x20/0x20 [ 31.282445] ? __lock_is_held+0xb6/0x140 [ 31.286496] ? lock_acquire+0x1d5/0x580 [ 31.290440] ? lock_acquire+0x1d5/0x580 [ 31.294390] ? worker_thread+0x4a3/0x1990 [ 31.298504] ? lock_downgrade+0x980/0x980 [ 31.302625] ? lock_release+0xa40/0xa40 [ 31.306570] ? worker_pool_assign_id+0x1b0/0x1b0 [ 31.311305] ? do_raw_spin_trylock+0x190/0x190 [ 31.315863] ? __update_idle_core+0x305/0x600 [ 31.320341] worker_thread+0x223/0x1990 [ 31.324294] ? process_one_work+0x1b10/0x1b10 [ 31.328762] ? _raw_spin_unlock_irq+0x27/0x70 [ 31.333232] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.338218] ? trace_hardirqs_on+0xd/0x10 [ 31.342334] ? _raw_spin_unlock_irq+0x27/0x70 [ 31.346818] ? finish_task_switch+0x1d3/0x740 [ 31.351280] ? finish_task_switch+0x1aa/0x740 [ 31.355753] ? copy_overflow+0x20/0x20 [ 31.359616] ? __schedule+0x8f3/0x2060 [ 31.363483] ? find_held_lock+0x35/0x1d0 [ 31.367524] ? find_held_lock+0x35/0x1d0 [ 31.371562] ? complete+0x62/0x80 [ 31.374989] ? __schedule+0x2060/0x2060 [ 31.378931] ? do_wait_intr_irq+0x3e0/0x3e0 [ 31.383222] ? __lockdep_init_map+0xe4/0x650 [ 31.387602] ? do_raw_spin_trylock+0x190/0x190 [ 31.392157] ? lockdep_init_map+0x9/0x10 [ 31.396188] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 31.401260] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.406245] ? trace_hardirqs_on+0xd/0x10 [ 31.410363] ? __kthread_parkme+0x175/0x240 [ 31.414655] kthread+0x33c/0x400 [ 31.417994] ? process_one_work+0x1b10/0x1b10 [ 31.422467] ? kthread_stop+0x7a0/0x7a0 [ 31.426412] ret_from_fork+0x24/0x30 [ 31.430099] Code: 45 88 30 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 [ 31.449168] RIP: cgroup_fd_array_put_ptr+0x71/0x2a0 RSP: ffff8801d35c7490 [ 31.456277] ---[ end trace bf8ed3dbb0bc775f ]--- [ 31.461052] Kernel panic - not syncing: Fatal exception [ 31.466860] Dumping ftrace buffer: [ 31.470373] (ftrace buffer empty) [ 31.474056] Kernel Offset: disabled [ 31.477655] Rebooting in 86400 seconds..