[....] Starting enhanced syslogd: rsyslogd[ 14.127754] audit: type=1400 audit(1516025452.237:5): avc: denied { syslog } for pid=3504 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: [ 19.545489] audit: type=1400 audit(1516025457.655:6): avc: denied { map } for pid=3644 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 '10.128.0.57' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 25.782965] audit: type=1400 audit(1516025463.892:7): avc: denied { map } for pid=3658 comm="syzkaller969487" path="/root/syzkaller969487215" 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 [ 26.065523] 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 [ 26.409831] audit: type=1400 audit(1516025464.519:8): avc: denied { sys_admin } for pid=3658 comm="syzkaller969487" 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 [ 26.436547] audit: type=1400 audit(1516025464.546:9): avc: denied { sys_chroot } for pid=3814 comm="syzkaller969487" 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 [ 26.461763] audit: type=1400 audit(1516025464.547:10): avc: denied { map_create } for pid=3814 comm="syzkaller969487" 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 [ 26.484489] audit: type=1400 audit(1516025464.547:11): avc: denied { map_read map_write } for pid=3814 comm="syzkaller969487" 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 [ 26.516302] kasan: CONFIG_KASAN_INLINE enabled [ 26.520952] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 26.528470] general protection fault: 0000 [#1] SMP KASAN [ 26.533993] Dumping ftrace buffer: [ 26.537507] (ftrace buffer empty) [ 26.541189] Modules linked in: [ 26.544354] CPU: 1 PID: 24 Comm: kworker/1:1 Not tainted 4.15.0-rc7+ #189 [ 26.551248] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.560597] Workqueue: events bpf_map_free_deferred [ 26.565588] RIP: 0010:cgroup_fd_array_put_ptr+0x71/0x2a0 [ 26.571014] RSP: 0018:ffff8801d98c7490 EFLAGS: 00010a02 [ 26.576353] RAX: 1e980039800001ea RBX: 1ffff1003b318e92 RCX: ffffffff8181cdd5 [ 26.583593] RDX: 0000000000000000 RSI: ffff8801d343b364 RDI: f4c001cc00000f52 [ 26.590832] RBP: ffff8801d98c7518 R08: 1ffff1003b318e70 R09: 0000000000000000 [ 26.598080] R10: 0000000000000000 R11: 0000000000000000 R12: f4c001cc00000ee6 [ 26.605328] R13: ffff8801d98c74f0 R14: dffffc0000000000 R15: f4c001cc00000ee6 [ 26.612572] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 26.620767] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.626619] CR2: 00000000203e2fe4 CR3: 0000000006822006 CR4: 00000000001606e0 [ 26.633872] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.641117] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.648358] Call Trace: [ 26.650919] ? array_of_map_free+0x180/0x180 [ 26.655312] ? kfree+0xf0/0x260 [ 26.658564] ? selinux_bpf_map_free+0x39/0x50 [ 26.663032] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.668019] cgroup_fd_array_free+0xd2/0x150 [ 26.672401] bpf_map_free_deferred+0xb0/0xe0 [ 26.676789] process_one_work+0xbbf/0x1b10 [ 26.680992] ? trace_hardirqs_on+0xd/0x10 [ 26.685115] ? pwq_dec_nr_in_flight+0x450/0x450 [ 26.689759] ? __schedule+0x8f3/0x2060 [ 26.693615] ? update_curr+0x2e3/0xa60 [ 26.697477] ? check_noncircular+0x20/0x20 [ 26.701684] ? account_entity_enqueue+0x3c8/0x6e0 [ 26.706506] ? lock_acquire+0x1d5/0x580 [ 26.710450] ? lock_acquire+0x1d5/0x580 [ 26.714396] ? worker_thread+0x4a3/0x1990 [ 26.718515] ? lock_downgrade+0x980/0x980 [ 26.722647] ? lock_release+0xa40/0xa40 [ 26.726592] ? retint_kernel+0x10/0x10 [ 26.730451] ? do_raw_spin_trylock+0x190/0x190 [ 26.735010] worker_thread+0x223/0x1990 [ 26.738965] ? process_one_work+0x1b10/0x1b10 [ 26.743430] ? _raw_spin_unlock_irq+0x27/0x70 [ 26.747894] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.752882] ? trace_hardirqs_on+0xd/0x10 [ 26.757007] ? _raw_spin_unlock_irq+0x27/0x70 [ 26.761483] ? finish_task_switch+0x1d3/0x740 [ 26.765944] ? finish_task_switch+0x1aa/0x740 [ 26.770419] ? copy_overflow+0x20/0x20 [ 26.774282] ? __schedule+0x8f3/0x2060 [ 26.778151] ? find_held_lock+0x35/0x1d0 [ 26.782188] ? find_held_lock+0x35/0x1d0 [ 26.786225] ? complete+0x62/0x80 [ 26.789653] ? __schedule+0x2060/0x2060 [ 26.793598] ? do_wait_intr_irq+0x3e0/0x3e0 [ 26.797897] ? __lockdep_init_map+0xe4/0x650 [ 26.802277] ? do_raw_spin_trylock+0x190/0x190 [ 26.806829] ? lockdep_init_map+0x9/0x10 [ 26.810869] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 26.815943] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.820931] ? trace_hardirqs_on+0xd/0x10 [ 26.825048] ? __kthread_parkme+0x175/0x240 [ 26.829341] kthread+0x33c/0x400 [ 26.832679] ? process_one_work+0x1b10/0x1b10 [ 26.837144] ? kthread_stop+0x7a0/0x7a0 [ 26.841091] ret_from_fork+0x24/0x30 [ 26.844781] 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 [ 26.863859] RIP: cgroup_fd_array_put_ptr+0x71/0x2a0 RSP: ffff8801d98c7490 [ 26.870803] ---[ end trace 2092e990b5e2b699 ]--- [ 26.875624] Kernel panic - not syncing: Fatal exception [ 26.881338] Dumping ftrace buffer: [ 26.884858] (ftrace buffer empty) [ 26.888539] Kernel Offset: disabled [ 26.892145] Rebooting in 86400 seconds..