[....] Starting enhanced syslogd: rsyslogd[ 12.617752] audit: type=1400 audit(1516153691.038:5): 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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: [ 19.910387] audit: type=1400 audit(1516153698.331:6): 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 '10.128.15.198' (ECDSA) to the list of known hosts. [ 38.587518] audit: type=1400 audit(1516153717.008:7): avc: denied { map } for pid=3661 comm="syzkaller154889" path="/root/syzkaller154889153" 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 net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 38.955221] 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 [ 39.286552] audit: type=1400 audit(1516153717.707:8): avc: denied { sys_admin } for pid=3661 comm="syzkaller154889" 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 [ 39.317463] audit: type=1400 audit(1516153717.738:9): avc: denied { sys_chroot } for pid=3788 comm="syzkaller154889" 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 [ 39.344638] audit: type=1400 audit(1516153717.738:10): avc: denied { map_create } for pid=3788 comm="syzkaller154889" 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 [ 39.374491] audit: type=1400 audit(1516153717.738:11): avc: denied { map_read map_write } for pid=3788 comm="syzkaller154889" 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 [ 39.404265] kasan: CONFIG_KASAN_INLINE enabled [ 39.408939] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 39.416378] general protection fault: 0000 [#1] SMP KASAN [ 39.421889] Dumping ftrace buffer: [ 39.425398] (ftrace buffer empty) [ 39.429081] Modules linked in: [ 39.432244] CPU: 1 PID: 23 Comm: kworker/1:1 Not tainted 4.15.0-rc8+ #174 [ 39.439135] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.448472] Workqueue: events bpf_map_free_deferred [ 39.453466] RIP: 0010:cgroup_fd_array_put_ptr+0x71/0x2a0 [ 39.458878] RSP: 0018:ffff8801d98bf490 EFLAGS: 00010a06 [ 39.464205] RAX: 11300039e00001e7 RBX: 1ffff1003b317e92 RCX: ffffffff8180f5a5 [ 39.473872] RDX: 0000000000000000 RSI: ffff8801d6d43424 RDI: 898001cf00000f38 [ 39.481629] RBP: ffff8801d98bf518 R08: 1ffff1003b317e70 R09: 0000000000000000 [ 39.488864] R10: 0000000000000000 R11: 0000000000000000 R12: 898001cf00000ecc [ 39.496101] R13: ffff8801d98bf4f0 R14: dffffc0000000000 R15: 898001cf00000ecc [ 39.503338] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 39.511528] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.517880] CR2: 00000000203e2fe4 CR3: 0000000006822001 CR4: 00000000001606e0 [ 39.525126] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.532364] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.539599] Call Trace: [ 39.542166] ? array_of_map_free+0x180/0x180 [ 39.546561] ? kfree+0xf0/0x260 [ 39.549809] ? selinux_bpf_map_free+0x39/0x50 [ 39.554273] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 39.559256] cgroup_fd_array_free+0xd2/0x150 [ 39.563633] bpf_map_free_deferred+0xb0/0xe0 [ 39.568011] process_one_work+0xbbf/0x1b10 [ 39.572212] ? trace_hardirqs_on+0xd/0x10 [ 39.576329] ? pwq_dec_nr_in_flight+0x450/0x450 [ 39.580968] ? __schedule+0x8f3/0x2060 [ 39.584819] ? update_curr+0x2e3/0xa60 [ 39.588677] ? check_noncircular+0x20/0x20 [ 39.592885] ? __lock_is_held+0xb6/0x140 [ 39.596925] ? lock_acquire+0x1d5/0x580 [ 39.600863] ? lock_acquire+0x1d5/0x580 [ 39.604801] ? worker_thread+0x4a3/0x1990 [ 39.608913] ? lock_downgrade+0x980/0x980 [ 39.613027] ? lock_release+0xa40/0xa40 [ 39.616967] ? retint_kernel+0x10/0x10 [ 39.620837] ? do_raw_spin_trylock+0x190/0x190 [ 39.625388] worker_thread+0x223/0x1990 [ 39.629341] ? process_one_work+0x1b10/0x1b10 [ 39.633806] ? _raw_spin_unlock_irq+0x27/0x70 [ 39.638266] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 39.643247] ? trace_hardirqs_on+0xd/0x10 [ 39.647358] ? _raw_spin_unlock_irq+0x27/0x70 [ 39.651819] ? finish_task_switch+0x1d3/0x740 [ 39.656279] ? finish_task_switch+0x1aa/0x740 [ 39.660740] ? copy_overflow+0x20/0x20 [ 39.664617] ? __schedule+0x8f3/0x2060 [ 39.668480] ? find_held_lock+0x35/0x1d0 [ 39.672506] ? find_held_lock+0x35/0x1d0 [ 39.676537] ? complete+0x62/0x80 [ 39.679963] ? __schedule+0x2060/0x2060 [ 39.683901] ? do_wait_intr_irq+0x3e0/0x3e0 [ 39.688188] ? __lockdep_init_map+0xe4/0x650 [ 39.692564] ? do_raw_spin_trylock+0x190/0x190 [ 39.697111] ? lockdep_init_map+0x9/0x10 [ 39.701138] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 39.706215] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 39.711195] ? trace_hardirqs_on+0xd/0x10 [ 39.715748] ? __kthread_parkme+0x175/0x240 [ 39.720036] kthread+0x33c/0x400 [ 39.723368] ? process_one_work+0x1b10/0x1b10 [ 39.727825] ? kthread_stop+0x7a0/0x7a0 [ 39.731773] ret_from_fork+0x37/0x50 [ 39.735457] Code: 45 88 40 f5 80 81 c7 00 f1 f1 f1 f1 c7 40 04 00 f2 f2 f2 c7 40 08 f3 f3 f3 f3 e8 1b 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 [ 39.754523] RIP: cgroup_fd_array_put_ptr+0x71/0x2a0 RSP: ffff8801d98bf490 [ 39.761646] ---[ end trace 26cfed7e14afba42 ]--- [ 39.766404] Kernel panic - not syncing: Fatal exception [ 39.772123] Dumping ftrace buffer: [ 39.776068] (ftrace buffer empty) [ 39.780007] Kernel Offset: disabled [ 39.783603] Rebooting in 86400 seconds..