[....] Starting enhanced syslogd: rsyslogd[ 12.973119] audit: type=1400 audit(1515931153.983:5): 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: [ 17.355323] audit: type=1400 audit(1515931158.366:6): 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 '10.128.15.216' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 23.761810] audit: type=1400 audit(1515931164.772:7): avc: denied { map } for pid=3654 comm="syzkaller274114" path="/root/syzkaller274114981" 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 [ 24.155051] 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 [ 24.512229] audit: type=1400 audit(1515931165.522:8): avc: denied { sys_admin } for pid=3654 comm="syzkaller274114" 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 [ 24.549425] audit: type=1400 audit(1515931165.560:9): avc: denied { sys_chroot } for pid=3810 comm="syzkaller274114" 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 [ 24.574566] audit: type=1400 audit(1515931165.561:10): avc: denied { map_create } for pid=3810 comm="syzkaller274114" 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 [ 24.597261] audit: type=1400 audit(1515931165.562:11): avc: denied { map_read map_write } for pid=3810 comm="syzkaller274114" 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 [ 24.629310] kasan: CONFIG_KASAN_INLINE enabled [ 24.633965] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 24.641361] general protection fault: 0000 [#1] SMP KASAN [ 24.646891] Dumping ftrace buffer: [ 24.650404] (ftrace buffer empty) [ 24.654084] Modules linked in: [ 24.657252] CPU: 1 PID: 23 Comm: kworker/1:1 Not tainted 4.15.0-rc7+ #187 [ 24.664146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.673477] Workqueue: events bpf_map_free_deferred [ 24.678471] RIP: 0010:cgroup_fd_array_put_ptr+0x71/0x2a0 [ 24.683900] RSP: 0018:ffff8801d98af490 EFLAGS: 00010a03 [ 24.689235] RAX: 1e240039800001e9 RBX: 1ffff1003b315e92 RCX: ffffffff8181cdd5 [ 24.696480] RDX: 0000000000000000 RSI: ffff8801d49b9de4 RDI: f12001cc00000f4e [ 24.703722] RBP: ffff8801d98af518 R08: 1ffff1003b315e70 R09: 0000000000000000 [ 24.710966] R10: 0000000000000000 R11: 0000000000000000 R12: f12001cc00000ee2 [ 24.718206] R13: ffff8801d98af4f0 R14: dffffc0000000000 R15: f12001cc00000ee2 [ 24.725447] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 24.733647] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.739502] CR2: 00000000203e2fe4 CR3: 0000000006822005 CR4: 00000000001606e0 [ 24.746745] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.753987] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.761229] Call Trace: [ 24.763795] ? array_of_map_free+0x180/0x180 [ 24.768176] ? kfree+0xf0/0x260 [ 24.771426] ? selinux_bpf_map_free+0x39/0x50 [ 24.775902] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.780898] cgroup_fd_array_free+0xd2/0x150 [ 24.785280] bpf_map_free_deferred+0xb0/0xe0 [ 24.789664] process_one_work+0xbbf/0x1b10 [ 24.793878] ? trace_hardirqs_on+0xd/0x10 [ 24.798004] ? pwq_dec_nr_in_flight+0x450/0x450 [ 24.802659] ? __schedule+0x8f3/0x2060 [ 24.806528] ? update_curr+0x2e3/0xa60 [ 24.810395] ? check_noncircular+0x20/0x20 [ 24.814608] ? __lock_is_held+0xb6/0x140 [ 24.818656] ? lock_acquire+0x1d5/0x580 [ 24.822606] ? lock_acquire+0x1d5/0x580 [ 24.826559] ? worker_thread+0x4a3/0x1990 [ 24.830685] ? lock_downgrade+0x980/0x980 [ 24.834810] ? lock_release+0xa40/0xa40 [ 24.838766] ? check_noncircular+0x20/0x20 [ 24.842982] ? do_raw_spin_trylock+0x190/0x190 [ 24.847551] worker_thread+0x223/0x1990 [ 24.851508] ? process_one_work+0x1b10/0x1b10 [ 24.855976] ? _raw_spin_unlock_irq+0x27/0x70 [ 24.860442] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.865432] ? trace_hardirqs_on+0xd/0x10 [ 24.869552] ? _raw_spin_unlock_irq+0x27/0x70 [ 24.874024] ? finish_task_switch+0x1d3/0x740 [ 24.878493] ? finish_task_switch+0x1aa/0x740 [ 24.882969] ? copy_overflow+0x20/0x20 [ 24.886831] ? __schedule+0x8f3/0x2060 [ 24.890705] ? find_held_lock+0x35/0x1d0 [ 24.894749] ? find_held_lock+0x35/0x1d0 [ 24.898787] ? complete+0x62/0x80 [ 24.902213] ? __schedule+0x2060/0x2060 [ 24.906159] ? do_wait_intr_irq+0x3e0/0x3e0 [ 24.910452] ? __lockdep_init_map+0xe4/0x650 [ 24.914832] ? do_raw_spin_trylock+0x190/0x190 [ 24.919394] ? lockdep_init_map+0x9/0x10 [ 24.923431] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 24.928518] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.933508] ? trace_hardirqs_on+0xd/0x10 [ 24.937630] ? __kthread_parkme+0x175/0x240 [ 24.941924] kthread+0x33c/0x400 [ 24.945262] ? process_one_work+0x1b10/0x1b10 [ 24.949728] ? kthread_stop+0x7a0/0x7a0 [ 24.953687] ret_from_fork+0x24/0x30 [ 24.957377] 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 [ 24.976452] RIP: cgroup_fd_array_put_ptr+0x71/0x2a0 RSP: ffff8801d98af490 [ 24.983587] ---[ end trace 0f440e6c89128055 ]--- [ 24.988407] Kernel panic - not syncing: Fatal exception [ 24.994284] Dumping ftrace buffer: [ 24.997819] (ftrace buffer empty) [ 25.001506] Kernel Offset: disabled [ 25.005105] Rebooting in 86400 seconds..