[....] Starting enhanced syslogd: rsyslogd[ 12.298893] audit: type=1400 audit(1515786015.885:5): avc: denied { syslog } for pid=3347 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: [ 18.454039] audit: type=1400 audit(1515786022.040:6): avc: denied { map } for pid=3487 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 '10.128.0.36' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 34.986513] audit: type=1400 audit(1515786038.573:7): avc: denied { map } for pid=3505 comm="syzkaller792234" path="/root/syzkaller792234655" 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 [ 35.067249] audit: type=1400 audit(1515786038.653:8): avc: denied { sys_admin } for pid=3505 comm="syzkaller792234" 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 [ 35.095270] audit: type=1400 audit(1515786038.679:9): avc: denied { sys_chroot } for pid=3527 comm="syzkaller792234" 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 [ 35.120084] audit: type=1400 audit(1515786038.681:10): avc: denied { map_create } for pid=3527 comm="syzkaller792234" 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 [ 35.143215] audit: type=1400 audit(1515786038.681:11): avc: denied { map_read map_write } for pid=3527 comm="syzkaller792234" 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 [ 35.173592] kasan: CONFIG_KASAN_INLINE enabled [ 35.178298] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.185690] general protection fault: 0000 [#1] SMP KASAN [ 35.191226] Dumping ftrace buffer: [ 35.194733] (ftrace buffer empty) [ 35.198444] Modules linked in: [ 35.201614] CPU: 0 PID: 24 Comm: kworker/0:1 Not tainted 4.15.0-rc7+ #185 [ 35.208504] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.217840] Workqueue: events bpf_map_free_deferred [ 35.222827] RIP: 0010:cgroup_fd_array_put_ptr+0x71/0x2a0 [ 35.228249] RSP: 0018:ffff8801d98c7490 EFLAGS: 00010a06 [ 35.233581] RAX: 11e00037000001c6 RBX: 1ffff1003b318e92 RCX: ffffffff8181cdd5 [ 35.240827] RDX: 0000000000000000 RSI: ffff8801c00206a4 RDI: 8f0001b800000e33 [ 35.248072] RBP: ffff8801d98c7518 R08: 1ffff1003b318e70 R09: 0000000000000000 [ 35.255325] R10: 0000000000000000 R11: 0000000000000000 R12: 8f0001b800000dc7 [ 35.262565] R13: ffff8801d98c74f0 R14: dffffc0000000000 R15: 8f0001b800000dc7 [ 35.269803] FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 35.277993] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.283841] CR2: 00007f7eb08ce000 CR3: 0000000006822005 CR4: 00000000001606f0 [ 35.291087] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.298331] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.305576] Call Trace: [ 35.308137] ? array_of_map_free+0x180/0x180 [ 35.312513] ? kfree+0xf0/0x260 [ 35.315759] ? selinux_bpf_map_free+0x39/0x50 [ 35.320221] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.325205] cgroup_fd_array_free+0xd2/0x150 [ 35.329583] bpf_map_free_deferred+0xb0/0xe0 [ 35.333964] process_one_work+0xbbf/0x1b10 [ 35.338164] ? put_task_stack+0x116/0x270 [ 35.342289] ? pwq_dec_nr_in_flight+0x450/0x450 [ 35.346929] ? __schedule+0x8f3/0x2060 [ 35.350783] ? update_curr+0x2e3/0xa60 [ 35.354640] ? check_noncircular+0x20/0x20 [ 35.358848] ? __lock_is_held+0xb6/0x140 [ 35.362900] ? lock_acquire+0x1d5/0x580 [ 35.366839] ? lock_acquire+0x1d5/0x580 [ 35.370796] ? worker_thread+0x4a3/0x1990 [ 35.374910] ? lock_downgrade+0x980/0x980 [ 35.379037] ? lock_release+0xa40/0xa40 [ 35.382980] ? retint_kernel+0x10/0x10 [ 35.386839] ? do_raw_spin_trylock+0x190/0x190 [ 35.391394] worker_thread+0x223/0x1990 [ 35.395344] ? process_one_work+0x1b10/0x1b10 [ 35.399805] ? _raw_spin_unlock_irq+0x27/0x70 [ 35.404268] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.409249] ? trace_hardirqs_on+0xd/0x10 [ 35.413372] ? _raw_spin_unlock_irq+0x27/0x70 [ 35.417830] ? finish_task_switch+0x1d3/0x740 [ 35.422289] ? finish_task_switch+0x1aa/0x740 [ 35.426751] ? copy_overflow+0x20/0x20 [ 35.430613] ? __schedule+0x8f3/0x2060 [ 35.434484] ? find_held_lock+0x35/0x1d0 [ 35.438524] ? find_held_lock+0x35/0x1d0 [ 35.442555] ? complete+0x62/0x80 [ 35.445981] ? __schedule+0x2060/0x2060 [ 35.449927] ? do_wait_intr_irq+0x3e0/0x3e0 [ 35.454236] ? __lockdep_init_map+0xe4/0x650 [ 35.458609] ? do_raw_spin_trylock+0x190/0x190 [ 35.463162] ? lockdep_init_map+0x9/0x10 [ 35.467187] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 35.472343] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.477324] ? trace_hardirqs_on+0xd/0x10 [ 35.481438] ? __kthread_parkme+0x175/0x240 [ 35.485726] kthread+0x33c/0x400 [ 35.489060] ? process_one_work+0x1b10/0x1b10 [ 35.493520] ? kthread_stop+0x7a0/0x7a0 [ 35.497462] ret_from_fork+0x24/0x30 [ 35.501148] 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 [ 35.520229] RIP: cgroup_fd_array_put_ptr+0x71/0x2a0 RSP: ffff8801d98c7490 [ 35.527350] ---[ end trace f48fc694e9c066fd ]--- [ 35.532119] Kernel panic - not syncing: Fatal exception [ 35.537491] Dumping ftrace buffer: [ 35.541008] (ftrace buffer empty) [ 35.544771] Kernel Offset: disabled [ 35.548365] Rebooting in 86400 seconds..