[....] Starting enhanced syslogd: rsyslogd[ 12.277982] audit: type=1400 audit(1515960698.303:5): avc: denied { syslog } for pid=3491 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: [ 19.316629] audit: type=1400 audit(1515960705.342:6): avc: denied { map } for pid=3631 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 '10.128.15.211' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 31.781135] audit: type=1400 audit(1515960717.806:7): avc: denied { map } for pid=3647 comm="syzkaller673500" path="/root/syzkaller673500328" 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 RTNETLINK answers: Operation not supported [ 32.039218] 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 [ 32.350958] audit: type=1400 audit(1515960718.376:8): avc: denied { sys_admin } for pid=3647 comm="syzkaller673500" 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 [ 32.537396] audit: type=1400 audit(1515960718.563:9): avc: denied { sys_chroot } for pid=3802 comm="syzkaller673500" 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 [ 32.562046] audit: type=1400 audit(1515960718.564:10): avc: denied { map_create } for pid=3802 comm="syzkaller673500" 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 [ 32.585543] audit: type=1400 audit(1515960718.564:11): avc: denied { map_read map_write } for pid=3802 comm="syzkaller673500" 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 [ 32.615227] kasan: CONFIG_KASAN_INLINE enabled [ 32.619958] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 32.627338] general protection fault: 0000 [#1] SMP KASAN [ 32.632859] Dumping ftrace buffer: [ 32.636368] (ftrace buffer empty) [ 32.640052] Modules linked in: [ 32.643227] CPU: 0 PID: 1549 Comm: kworker/0:2 Not tainted 4.15.0-rc7+ #262 [ 32.650310] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.659657] Workqueue: events bpf_map_free_deferred [ 32.664649] RIP: 0010:cgroup_fd_array_put_ptr+0x71/0x2a0 [ 32.670079] RSP: 0018:ffff8801d358f490 EFLAGS: 00010a07 [ 32.675413] RAX: 11e00039600001e8 RBX: 1ffff1003a6b1e92 RCX: ffffffff8180f4d5 [ 32.682761] RDX: 0000000000000000 RSI: ffff8801d4ddbde4 RDI: 8f0001cb00000f46 [ 32.690004] RBP: ffff8801d358f518 R08: 1ffff1003a6b1e70 R09: 0000000000000000 [ 32.697340] R10: 0000000000000000 R11: 0000000000000000 R12: 8f0001cb00000eda [ 32.704593] R13: ffff8801d358f4f0 R14: dffffc0000000000 R15: 8f0001cb00000eda [ 32.711845] FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 32.720040] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 32.725892] CR2: 00000000203e2fe4 CR3: 0000000006822004 CR4: 00000000001606f0 [ 32.733134] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 32.740373] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 32.747613] Call Trace: [ 32.750176] ? array_of_map_free+0x180/0x180 [ 32.754567] ? kfree+0xf0/0x260 [ 32.757823] ? selinux_bpf_map_free+0x39/0x50 [ 32.762305] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 32.767292] cgroup_fd_array_free+0xd2/0x150 [ 32.771675] bpf_map_free_deferred+0xb0/0xe0 [ 32.776054] process_one_work+0xbbf/0x1b10 [ 32.780269] ? trace_hardirqs_on+0xd/0x10 [ 32.784391] ? pwq_dec_nr_in_flight+0x450/0x450 [ 32.789037] ? __schedule+0x8f3/0x2060 [ 32.792896] ? update_curr+0x47b/0xa60 [ 32.796758] ? check_noncircular+0x20/0x20 [ 32.800962] ? __lock_is_held+0xb6/0x140 [ 32.805005] ? lock_acquire+0x1d5/0x580 [ 32.808963] ? lock_acquire+0x1d5/0x580 [ 32.812917] ? worker_thread+0x4a3/0x1990 [ 32.817045] ? lock_downgrade+0x980/0x980 [ 32.821177] ? lock_release+0xa40/0xa40 [ 32.825124] ? do_raw_spin_trylock+0x190/0x190 [ 32.829677] ? __update_idle_core+0x305/0x600 [ 32.834147] worker_thread+0x223/0x1990 [ 32.838100] ? process_one_work+0x1b10/0x1b10 [ 32.842578] ? _raw_spin_unlock_irq+0x27/0x70 [ 32.847047] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 32.852047] ? trace_hardirqs_on+0xd/0x10 [ 32.856165] ? _raw_spin_unlock_irq+0x27/0x70 [ 32.860631] ? finish_task_switch+0x1d3/0x740 [ 32.865094] ? finish_task_switch+0x1aa/0x740 [ 32.869560] ? copy_overflow+0x20/0x20 [ 32.873426] ? __schedule+0x8f3/0x2060 [ 32.877289] ? lock_downgrade+0x980/0x980 [ 32.881425] ? find_held_lock+0x35/0x1d0 [ 32.885463] ? find_held_lock+0x35/0x1d0 [ 32.889499] ? complete+0x62/0x80 [ 32.892937] ? __schedule+0x2060/0x2060 [ 32.896902] ? do_wait_intr_irq+0x3e0/0x3e0 [ 32.901194] ? __lockdep_init_map+0xe4/0x650 [ 32.905715] ? do_raw_spin_trylock+0x190/0x190 [ 32.910266] ? lockdep_init_map+0x9/0x10 [ 32.914300] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 32.919377] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 32.924364] ? trace_hardirqs_on+0xd/0x10 [ 32.928489] ? __kthread_parkme+0x175/0x240 [ 32.932784] kthread+0x33c/0x400 [ 32.936137] ? process_one_work+0x1b10/0x1b10 [ 32.940600] ? kthread_stop+0x7a0/0x7a0 [ 32.944544] ret_from_fork+0x37/0x50 [ 32.948234] 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 [ 32.967311] RIP: cgroup_fd_array_put_ptr+0x71/0x2a0 RSP: ffff8801d358f490 [ 32.974391] ---[ end trace bfd1c62b5055b1bd ]--- [ 32.979151] Kernel panic - not syncing: Fatal exception [ 32.984881] Dumping ftrace buffer: [ 32.988393] (ftrace buffer empty) [ 32.992085] Kernel Offset: disabled [ 32.995686] Rebooting in 86400 seconds..