[....] Starting enhanced syslogd: rsyslogd[ 13.729578] audit: type=1400 audit(1516026067.232:5): avc: denied { syslog } for pid=3510 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: [ 17.163979] audit: type=1400 audit(1516026070.666:6): avc: denied { map } for pid=3648 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 '10.128.15.233' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 30.939458] audit: type=1400 audit(1516026084.441:7): avc: denied { map } for pid=3665 comm="syzkaller779012" path="/root/syzkaller779012637" 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 [ 31.212634] 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 [ 31.558557] audit: type=1400 audit(1516026085.060:8): avc: denied { sys_admin } for pid=3665 comm="syzkaller779012" 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 executing program [ 31.754449] audit: type=1400 audit(1516026085.257:9): avc: denied { sys_chroot } for pid=3820 comm="syzkaller779012" 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 [ 31.779433] audit: type=1400 audit(1516026085.258:10): avc: denied { map_create } for pid=3820 comm="syzkaller779012" 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 [ 31.803788] audit: type=1400 audit(1516026085.258:11): avc: denied { map_read map_write } for pid=3820 comm="syzkaller779012" 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 [ 31.836405] kasan: CONFIG_KASAN_INLINE enabled [ 31.841320] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 31.848708] general protection fault: 0000 [#1] SMP KASAN [ 31.854226] Dumping ftrace buffer: [ 31.857738] (ftrace buffer empty) [ 31.861420] Modules linked in: [ 31.864601] CPU: 0 PID: 24 Comm: kworker/0:1 Not tainted 4.15.0-rc8+ #173 [ 31.871507] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.880845] Workqueue: events bpf_map_free_deferred [ 31.885858] RIP: 0010:cgroup_fd_array_put_ptr+0x71/0x2a0 [ 31.891277] RSP: 0018:ffff8801d98c7490 EFLAGS: 00010a06 [ 31.896609] RAX: 1d2c0039e00001eb RBX: 1ffff1003b318e92 RCX: ffffffff8180f4d5 [ 31.903857] RDX: 0000000000000000 RSI: ffff8801d23fa2a4 RDI: e96001cf00000f58 [ 31.911187] RBP: ffff8801d98c7518 R08: 1ffff1003b318e70 R09: 0000000000000000 [ 31.920514] R10: 0000000000000000 R11: 0000000000000000 R12: e96001cf00000eec [ 31.928454] R13: ffff8801d98c74f0 R14: dffffc0000000000 R15: e96001cf00000eec [ 31.936401] FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 31.944599] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.950472] CR2: 00000000203e2fe4 CR3: 0000000006822002 CR4: 00000000001606f0 [ 31.957733] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.965064] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.972305] Call Trace: [ 31.974871] ? array_of_map_free+0x180/0x180 [ 31.979261] ? kfree+0xf0/0x260 [ 31.982523] ? selinux_bpf_map_free+0x39/0x50 [ 31.986994] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.991983] cgroup_fd_array_free+0xd2/0x150 [ 31.996372] bpf_map_free_deferred+0xb0/0xe0 [ 32.000755] process_one_work+0xbbf/0x1b10 [ 32.004961] ? trace_hardirqs_on+0xd/0x10 [ 32.009087] ? pwq_dec_nr_in_flight+0x450/0x450 [ 32.013735] ? __schedule+0x8f3/0x2060 [ 32.017603] ? update_curr+0x2e3/0xa60 [ 32.021466] ? check_noncircular+0x20/0x20 [ 32.025684] ? __lock_is_held+0xb6/0x140 [ 32.029727] ? lock_acquire+0x1d5/0x580 [ 32.034539] ? lock_acquire+0x1d5/0x580 [ 32.038659] ? worker_thread+0x4a3/0x1990 [ 32.043041] ? lock_downgrade+0x980/0x980 [ 32.047160] ? lock_release+0xa40/0xa40 [ 32.051106] ? retint_kernel+0x10/0x10 [ 32.054981] ? do_raw_spin_trylock+0x190/0x190 [ 32.059541] worker_thread+0x223/0x1990 [ 32.063505] ? process_one_work+0x1b10/0x1b10 [ 32.067976] ? _raw_spin_unlock_irq+0x27/0x70 [ 32.072443] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 32.077428] ? trace_hardirqs_on+0xd/0x10 [ 32.081558] ? _raw_spin_unlock_irq+0x27/0x70 [ 32.086037] ? finish_task_switch+0x1d3/0x740 [ 32.090510] ? finish_task_switch+0x1aa/0x740 [ 32.094987] ? copy_overflow+0x20/0x20 [ 32.098861] ? __schedule+0x8f3/0x2060 [ 32.102731] ? find_held_lock+0x35/0x1d0 [ 32.106764] ? find_held_lock+0x35/0x1d0 [ 32.110802] ? complete+0x62/0x80 [ 32.114240] ? __schedule+0x2060/0x2060 [ 32.118185] ? do_wait_intr_irq+0x3e0/0x3e0 [ 32.122475] ? __lockdep_init_map+0xe4/0x650 [ 32.126957] ? do_raw_spin_trylock+0x190/0x190 [ 32.131510] ? lockdep_init_map+0x9/0x10 [ 32.135546] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 32.140631] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 32.146747] ? trace_hardirqs_on+0xd/0x10 [ 32.150865] ? __kthread_parkme+0x175/0x240 [ 32.155169] kthread+0x33c/0x400 [ 32.158524] ? process_one_work+0x1b10/0x1b10 [ 32.162990] ? kthread_stop+0x7a0/0x7a0 [ 32.166936] ret_from_fork+0x37/0x50 [ 32.170625] 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 [ 32.189692] RIP: cgroup_fd_array_put_ptr+0x71/0x2a0 RSP: ffff8801d98c7490 [ 32.196848] ---[ end trace d3ad783531b6e09a ]--- [ 32.201633] Kernel panic - not syncing: Fatal exception [ 32.207355] Dumping ftrace buffer: [ 32.210885] (ftrace buffer empty) [ 32.214568] Kernel Offset: disabled [ 32.218952] Rebooting in 86400 seconds..