[....] Starting enhanced syslogd: rsyslogd[ 13.089662] audit: type=1400 audit(1515786640.645:5): avc: denied { syslog } for pid=3352 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: [ 18.514455] audit: type=1400 audit(1515786646.070:6): avc: denied { map } for pid=3492 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 '10.128.15.244' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 24.731854] audit: type=1400 audit(1515786652.287:7): avc: denied { map } for pid=3507 comm="syzkaller441965" path="/root/syzkaller441965490" 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 executing program [ 24.821267] audit: type=1400 audit(1515786652.376:8): avc: denied { sys_admin } for pid=3507 comm="syzkaller441965" 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 [ 24.850339] audit: type=1400 audit(1515786652.404:9): avc: denied { sys_chroot } for pid=3531 comm="syzkaller441965" 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 [ 24.875047] audit: type=1400 audit(1515786652.405:10): avc: denied { map_create } for pid=3531 comm="syzkaller441965" 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 [ 24.898161] audit: type=1400 audit(1515786652.405:11): avc: denied { map_read map_write } for pid=3531 comm="syzkaller441965" 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 [ 24.924573] kasan: CONFIG_KASAN_INLINE enabled [ 24.929250] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 24.936658] general protection fault: 0000 [#1] SMP KASAN [ 24.942169] Dumping ftrace buffer: [ 24.945679] (ftrace buffer empty) [ 24.949361] Modules linked in: [ 24.952525] CPU: 1 PID: 23 Comm: kworker/1:1 Not tainted 4.15.0-rc7-mm1+ #54 [ 24.959677] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.969016] Workqueue: events bpf_map_free_deferred [ 24.974007] RIP: 0010:cgroup_fd_array_put_ptr+0x71/0x2a0 [ 24.979421] RSP: 0018:ffff8801d98b7490 EFLAGS: 00010a07 [ 24.984749] RAX: 146c0037800001c6 RBX: 1ffff1003b316e92 RCX: ffffffff818250c5 [ 24.991989] RDX: 0000000000000000 RSI: ffff8801c03ee5e4 RDI: a36001bc00000e37 [ 24.999227] RBP: ffff8801d98b7518 R08: 1ffff1003b316e70 R09: 0000000000000000 [ 25.006466] R10: 0000000000000000 R11: 0000000000000000 R12: a36001bc00000dcb [ 25.013706] R13: ffff8801d98b74f0 R14: dffffc0000000000 R15: a36001bc00000dcb [ 25.020961] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 25.029158] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.035008] CR2: 00000000203e2fe4 CR3: 0000000006822003 CR4: 00000000001606e0 [ 25.042273] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.049512] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.056751] Call Trace: [ 25.059313] ? array_of_map_free+0x180/0x180 [ 25.063688] ? kfree+0xf3/0x260 [ 25.066939] ? selinux_bpf_map_free+0x39/0x50 [ 25.071433] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.076431] cgroup_fd_array_free+0xd2/0x150 [ 25.080814] bpf_map_free_deferred+0xb0/0xe0 [ 25.085193] process_one_work+0xbbf/0x1af0 [ 25.089397] ? trace_hardirqs_on+0xd/0x10 [ 25.093521] ? pwq_dec_nr_in_flight+0x450/0x450 [ 25.098160] ? __switch_to_asm+0x43/0x80 [ 25.102184] ? __switch_to_asm+0x53/0x80 [ 25.106210] ? __switch_to_asm+0x43/0x80 [ 25.110236] ? __switch_to_asm+0x53/0x80 [ 25.114264] ? __switch_to_asm+0x43/0x80 [ 25.118298] ? __switch_to_asm+0x53/0x80 [ 25.122325] ? __switch_to_asm+0x43/0x80 [ 25.126376] ? __schedule+0x8f3/0x2060 [ 25.130233] ? update_curr+0x2e3/0xa60 [ 25.134099] ? check_noncircular+0x20/0x20 [ 25.138301] ? retint_kernel+0x10/0x10 [ 25.142157] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.147143] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.151876] ? lock_acquire+0x1d5/0x580 [ 25.155817] ? lock_acquire+0x1d5/0x580 [ 25.159762] ? worker_thread+0x4a3/0x1990 [ 25.163881] ? lock_downgrade+0x980/0x980 [ 25.168001] ? lock_release+0xa40/0xa40 [ 25.171945] ? retint_kernel+0x10/0x10 [ 25.175801] ? do_raw_spin_trylock+0x190/0x190 [ 25.180361] worker_thread+0x223/0x1990 [ 25.184315] ? process_one_work+0x1af0/0x1af0 [ 25.188780] ? _raw_spin_unlock_irq+0x27/0x70 [ 25.193243] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.198227] ? trace_hardirqs_on+0xd/0x10 [ 25.202347] ? mmdrop+0x18/0x30 [ 25.205598] ? finish_task_switch+0x1f6/0x740 [ 25.210060] ? __switch_to_asm+0x43/0x80 [ 25.214089] ? __switch_to_asm+0x53/0x80 [ 25.218115] ? __switch_to_asm+0x43/0x80 [ 25.222144] ? copy_overflow+0x20/0x20 [ 25.226001] ? __switch_to_asm+0x43/0x80 [ 25.230028] ? __switch_to_asm+0x43/0x80 [ 25.234055] ? __switch_to_asm+0x53/0x80 [ 25.238083] ? __switch_to_asm+0x43/0x80 [ 25.242127] ? __switch_to_asm+0x53/0x80 [ 25.246156] ? __switch_to_asm+0x43/0x80 [ 25.250184] ? __switch_to_asm+0x53/0x80 [ 25.254209] ? __switch_to_asm+0x43/0x80 [ 25.258244] ? __schedule+0x8f3/0x2060 [ 25.262112] ? find_held_lock+0x35/0x1d0 [ 25.266142] ? find_held_lock+0x35/0x1d0 [ 25.270179] ? complete+0x62/0x80 [ 25.273608] ? __schedule+0x2060/0x2060 [ 25.277551] ? do_wait_intr_irq+0x3e0/0x3e0 [ 25.281841] ? __lockdep_init_map+0xe4/0x650 [ 25.286219] ? do_raw_spin_trylock+0x190/0x190 [ 25.290767] ? lockdep_init_map+0x9/0x10 [ 25.294801] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 25.299882] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.304867] ? trace_hardirqs_on+0xd/0x10 [ 25.308987] ? __kthread_parkme+0x175/0x240 [ 25.313277] kthread+0x33c/0x400 [ 25.316614] ? process_one_work+0x1af0/0x1af0 [ 25.321077] ? kthread_stop+0x7a0/0x7a0 [ 25.325019] ret_from_fork+0x4b/0x60 [ 25.328706] Code: 45 88 60 50 82 81 c7 00 f1 f1 f1 f1 c7 40 04 00 f2 f2 f2 c7 40 08 f3 f3 f3 f3 e8 5b 4e 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 [ 25.347785] RIP: cgroup_fd_array_put_ptr+0x71/0x2a0 RSP: ffff8801d98b7490 [ 25.354771] ---[ end trace 07e85ee771d49f9d ]--- [ 25.359547] Kernel panic - not syncing: Fatal exception [ 25.365404] Dumping ftrace buffer: [ 25.368918] (ftrace buffer empty) [ 25.372597] Kernel Offset: disabled [ 25.376191] Rebooting in 86400 seconds..