[....] Starting enhanced syslogd: rsyslogd[ 12.092775] audit: type=1400 audit(1516135645.013:5): avc: denied { syslog } for pid=3492 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 file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 16.973705] audit: type=1400 audit(1516135649.894:6): avc: denied { map } for pid=3630 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 '10.128.0.29' (ECDSA) to the list of known hosts. [ 23.151714] audit: type=1400 audit(1516135656.072:7): avc: denied { map } for pid=3644 comm="syzkaller372865" path="/root/syzkaller372865422" 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 RTNETLINK answers: Operation not supported [ 23.513428] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument executing program [ 23.825091] audit: type=1400 audit(1516135656.745:8): avc: denied { sys_admin } for pid=3644 comm="syzkaller372865" 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 [ 23.853505] audit: type=1400 audit(1516135656.774:9): avc: denied { sys_chroot } for pid=3771 comm="syzkaller372865" 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 [ 23.878067] audit: type=1400 audit(1516135656.774:10): avc: denied { map_create } for pid=3771 comm="syzkaller372865" 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 [ 23.900760] audit: type=1400 audit(1516135656.774:11): avc: denied { map_read map_write } for pid=3771 comm="syzkaller372865" 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 [ 23.931873] kasan: CONFIG_KASAN_INLINE enabled [ 23.936533] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 23.943915] general protection fault: 0000 [#1] SMP KASAN [ 23.949428] Dumping ftrace buffer: [ 23.952938] (ftrace buffer empty) [ 23.956618] Modules linked in: [ 23.959783] CPU: 1 PID: 1550 Comm: kworker/1:2 Not tainted 4.15.0-rc8+ #263 [ 23.966852] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.976185] Workqueue: events bpf_map_free_deferred [ 23.981172] RIP: 0010:cgroup_fd_array_put_ptr+0x71/0x2a0 [ 23.986588] RSP: 0018:ffff8801d3597490 EFLAGS: 00010a07 [ 23.991920] RAX: 1b3c0039400001e4 RBX: 1ffff1003a6b2e92 RCX: ffffffff8180f4d5 [ 23.999160] RDX: 0000000000000000 RSI: ffff8801d6e09d24 RDI: d9e001ca00000f27 [ 24.006399] RBP: ffff8801d3597518 R08: 1ffff1003a6b2e70 R09: 0000000000000000 [ 24.013640] R10: 0000000000000000 R11: 0000000000000000 R12: d9e001ca00000ebb [ 24.020887] R13: ffff8801d35974f0 R14: dffffc0000000000 R15: d9e001ca00000ebb [ 24.028129] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 24.036335] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.042184] CR2: 00000000203e2fe4 CR3: 0000000006822003 CR4: 00000000001606e0 [ 24.049424] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.056663] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.063901] Call Trace: [ 24.066460] ? array_of_map_free+0x180/0x180 [ 24.070836] ? kfree+0xf0/0x260 [ 24.074084] ? selinux_bpf_map_free+0x39/0x50 [ 24.078550] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.083536] cgroup_fd_array_free+0xd2/0x150 [ 24.087918] bpf_map_free_deferred+0xb0/0xe0 [ 24.092297] process_one_work+0xbbf/0x1b10 [ 24.096498] ? trace_hardirqs_on+0xd/0x10 [ 24.100618] ? pwq_dec_nr_in_flight+0x450/0x450 [ 24.105260] ? __schedule+0x8f3/0x2060 [ 24.109117] ? update_curr+0x47b/0xa60 [ 24.112978] ? check_noncircular+0x20/0x20 [ 24.117180] ? __lock_is_held+0xb6/0x140 [ 24.121222] ? lock_acquire+0x1d5/0x580 [ 24.125166] ? lock_acquire+0x1d5/0x580 [ 24.129110] ? worker_thread+0x4a3/0x1990 [ 24.133228] ? lock_downgrade+0x980/0x980 [ 24.137347] ? lock_release+0xa40/0xa40 [ 24.141301] ? do_raw_spin_trylock+0x190/0x190 [ 24.145851] ? __update_idle_core+0x305/0x600 [ 24.150320] worker_thread+0x223/0x1990 [ 24.154274] ? process_one_work+0x1b10/0x1b10 [ 24.158742] ? _raw_spin_unlock_irq+0x27/0x70 [ 24.163206] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.168191] ? trace_hardirqs_on+0xd/0x10 [ 24.172308] ? _raw_spin_unlock_irq+0x27/0x70 [ 24.176773] ? finish_task_switch+0x1d3/0x740 [ 24.181237] ? finish_task_switch+0x1aa/0x740 [ 24.185707] ? copy_overflow+0x20/0x20 [ 24.189569] ? __schedule+0x8f3/0x2060 [ 24.193429] ? lock_downgrade+0x980/0x980 [ 24.197551] ? find_held_lock+0x35/0x1d0 [ 24.201582] ? find_held_lock+0x35/0x1d0 [ 24.205617] ? complete+0x62/0x80 [ 24.209041] ? __schedule+0x2060/0x2060 [ 24.212983] ? do_wait_intr_irq+0x3e0/0x3e0 [ 24.217271] ? __lockdep_init_map+0xe4/0x650 [ 24.221649] ? do_raw_spin_trylock+0x190/0x190 [ 24.226200] ? lockdep_init_map+0x9/0x10 [ 24.230230] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 24.235312] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.240297] ? trace_hardirqs_on+0xd/0x10 [ 24.244411] ? __kthread_parkme+0x175/0x240 [ 24.248701] kthread+0x33c/0x400 [ 24.252038] ? process_one_work+0x1b10/0x1b10 [ 24.256498] ? kthread_stop+0x7a0/0x7a0 [ 24.260440] ret_from_fork+0x37/0x50 [ 24.264124] Code: 45 88 70 f4 80 81 c7 00 f1 f1 f1 f1 c7 40 04 00 f2 f2 f2 c7 40 08 f3 f3 f3 f3 e8 eb 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 [ 24.283189] RIP: cgroup_fd_array_put_ptr+0x71/0x2a0 RSP: ffff8801d3597490 [ 24.290253] ---[ end trace 7d2398b07b8f9873 ]--- [ 24.295024] Kernel panic - not syncing: Fatal exception [ 24.300717] Dumping ftrace buffer: [ 24.304225] (ftrace buffer empty) [ 24.307906] Kernel Offset: disabled [ 24.311503] Rebooting in 86400 seconds..