[....] Starting enhanced syslogd: rsyslogd[ 11.464312] audit: type=1400 audit(1516138802.803:5): avc: denied { syslog } for pid=3497 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: [ 16.739560] audit: type=1400 audit(1516138808.078:6): avc: denied { map } for pid=3636 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 '10.128.15.236' (ECDSA) to the list of known hosts. [ 36.098474] audit: type=1400 audit(1516138827.437:7): avc: denied { map } for pid=3654 comm="syzkaller032929" path="/root/syzkaller032929882" 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 net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 36.469952] 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 [ 36.806385] audit: type=1400 audit(1516138828.145:8): avc: denied { sys_admin } for pid=3654 comm="syzkaller032929" 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 [ 36.834444] audit: type=1400 audit(1516138828.173:9): avc: denied { sys_chroot } for pid=3781 comm="syzkaller032929" 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 [ 36.858980] audit: type=1400 audit(1516138828.173:10): avc: denied { map_create } for pid=3781 comm="syzkaller032929" 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 [ 36.882194] audit: type=1400 audit(1516138828.173:11): avc: denied { map_read map_write } for pid=3781 comm="syzkaller032929" 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 [ 36.909976] kasan: CONFIG_KASAN_INLINE enabled [ 36.914656] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 36.922079] general protection fault: 0000 [#1] SMP KASAN [ 36.927589] Dumping ftrace buffer: [ 36.931095] (ftrace buffer empty) [ 36.934774] Modules linked in: [ 36.937935] CPU: 1 PID: 23 Comm: kworker/1:1 Not tainted 4.15.0-rc8+ #174 [ 36.944825] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.954159] Workqueue: events bpf_map_free_deferred [ 36.959153] RIP: 0010:cgroup_fd_array_put_ptr+0x71/0x2a0 [ 36.964567] RSP: 0018:ffff8801d98af490 EFLAGS: 00010a02 [ 36.969893] RAX: 1374003a000001e6 RBX: 1ffff1003b315e92 RCX: ffffffff8180f5a5 [ 36.977136] RDX: 0000000000000000 RSI: ffff8801d7c7dbe4 RDI: 9ba001d000000f31 [ 36.984372] RBP: ffff8801d98af518 R08: 1ffff1003b315e70 R09: 0000000000000000 [ 36.991609] R10: 0000000000000000 R11: 0000000000000000 R12: 9ba001d000000ec5 [ 36.998853] R13: ffff8801d98af4f0 R14: dffffc0000000000 R15: 9ba001d000000ec5 [ 37.006096] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 37.014286] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.020133] CR2: 00000000203e2fe4 CR3: 0000000006822006 CR4: 00000000001606e0 [ 37.027371] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.034614] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.041856] Call Trace: [ 37.044411] ? array_of_map_free+0x180/0x180 [ 37.048786] ? kfree+0xf0/0x260 [ 37.052857] ? selinux_bpf_map_free+0x39/0x50 [ 37.057322] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 37.062307] cgroup_fd_array_free+0xd2/0x150 [ 37.066687] bpf_map_free_deferred+0xb0/0xe0 [ 37.071066] process_one_work+0xbbf/0x1b10 [ 37.075265] ? trace_hardirqs_on+0xd/0x10 [ 37.079386] ? pwq_dec_nr_in_flight+0x450/0x450 [ 37.084027] ? __schedule+0x8f3/0x2060 [ 37.087878] ? update_curr+0x2e3/0xa60 [ 37.091736] ? check_noncircular+0x20/0x20 [ 37.095937] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 37.100933] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 37.105664] ? retint_kernel+0x10/0x10 [ 37.109526] ? lock_acquire+0x1d5/0x580 [ 37.113465] ? lock_acquire+0x1d5/0x580 [ 37.117406] ? worker_thread+0x4a3/0x1990 [ 37.121521] ? lock_downgrade+0x980/0x980 [ 37.125639] ? lock_release+0xa40/0xa40 [ 37.129586] ? check_noncircular+0x20/0x20 [ 37.133786] ? do_raw_spin_trylock+0x190/0x190 [ 37.138347] worker_thread+0x223/0x1990 [ 37.142295] ? process_one_work+0x1b10/0x1b10 [ 37.146757] ? _raw_spin_unlock_irq+0x27/0x70 [ 37.151228] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 37.156211] ? trace_hardirqs_on+0xd/0x10 [ 37.160330] ? _raw_spin_unlock_irq+0x27/0x70 [ 37.164795] ? finish_task_switch+0x1d3/0x740 [ 37.169252] ? finish_task_switch+0x1aa/0x740 [ 37.173716] ? copy_overflow+0x20/0x20 [ 37.177574] ? __schedule+0x8f3/0x2060 [ 37.181456] ? find_held_lock+0x35/0x1d0 [ 37.185487] ? find_held_lock+0x35/0x1d0 [ 37.189525] ? complete+0x62/0x80 [ 37.192954] ? __schedule+0x2060/0x2060 [ 37.196901] ? do_wait_intr_irq+0x3e0/0x3e0 [ 37.201186] ? __lockdep_init_map+0xe4/0x650 [ 37.205566] ? do_raw_spin_trylock+0x190/0x190 [ 37.210117] ? lockdep_init_map+0x9/0x10 [ 37.214144] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 37.219214] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 37.224198] ? trace_hardirqs_on+0xd/0x10 [ 37.228313] ? __kthread_parkme+0x175/0x240 [ 37.232603] kthread+0x33c/0x400 [ 37.235939] ? process_one_work+0x1b10/0x1b10 [ 37.240399] ? kthread_stop+0x7a0/0x7a0 [ 37.244339] ret_from_fork+0x37/0x50 [ 37.248023] Code: 45 88 40 f5 80 81 c7 00 f1 f1 f1 f1 c7 40 04 00 f2 f2 f2 c7 40 08 f3 f3 f3 f3 e8 1b 22 ef 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 [ 37.267087] RIP: cgroup_fd_array_put_ptr+0x71/0x2a0 RSP: ffff8801d98af490 [ 37.274045] ---[ end trace aade888eb045fc2b ]--- [ 37.278798] Kernel panic - not syncing: Fatal exception [ 37.284500] Dumping ftrace buffer: [ 37.288007] (ftrace buffer empty) [ 37.291685] Kernel Offset: disabled [ 37.295277] Rebooting in 86400 seconds..