[....] Starting enhanced syslogd: rsyslogd[ 13.526114] audit: type=1400 audit(1516026043.842:5): avc: denied { syslog } for pid=3522 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: [ 18.332294] audit: type=1400 audit(1516026048.649:6): avc: denied { map } for pid=3661 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 '10.128.0.13' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 29.726882] audit: type=1400 audit(1516026060.043:7): avc: denied { map } for pid=3676 comm="syzkaller971777" path="/root/syzkaller971777228" 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 [ 30.142584] 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 [ 30.546241] audit: type=1400 audit(1516026060.862:8): avc: denied { sys_admin } for pid=3676 comm="syzkaller971777" 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 [ 30.735531] audit: type=1400 audit(1516026061.052:9): avc: denied { sys_chroot } for pid=3832 comm="syzkaller971777" 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 [ 30.760265] audit: type=1400 audit(1516026061.053:10): avc: denied { map_create } for pid=3832 comm="syzkaller971777" 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 [ 30.783445] audit: type=1400 audit(1516026061.054:11): avc: denied { map_read map_write } for pid=3832 comm="syzkaller971777" 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 [ 30.813560] kasan: CONFIG_KASAN_INLINE enabled [ 30.818271] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.825677] general protection fault: 0000 [#1] SMP KASAN [ 30.831195] Dumping ftrace buffer: [ 30.834714] (ftrace buffer empty) [ 30.838399] Modules linked in: [ 30.841569] CPU: 1 PID: 24 Comm: kworker/1:1 Not tainted 4.15.0-rc8+ #263 [ 30.848468] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.857811] Workqueue: events bpf_map_free_deferred [ 30.862803] RIP: 0010:cgroup_fd_array_put_ptr+0x71/0x2a0 [ 30.868224] RSP: 0018:ffff8801d98c7490 EFLAGS: 00010a03 [ 30.873558] RAX: 1f700039600001ec RBX: 1ffff1003b318e92 RCX: ffffffff8180f4d5 [ 30.880800] RDX: 0000000000000000 RSI: ffff8801d0411ae4 RDI: fb8001cb00000f64 [ 30.888045] RBP: ffff8801d98c7518 R08: 1ffff1003b318e70 R09: 0000000000000000 [ 30.895290] R10: 0000000000000000 R11: 0000000000000000 R12: fb8001cb00000ef8 [ 30.902547] R13: ffff8801d98c74f0 R14: dffffc0000000000 R15: fb8001cb00000ef8 [ 30.909793] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 30.918007] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.923863] CR2: 00000000203e2fe4 CR3: 0000000006822006 CR4: 00000000001606e0 [ 30.931108] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.938350] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.945593] Call Trace: [ 30.948160] ? array_of_map_free+0x180/0x180 [ 30.952559] ? kfree+0xf0/0x260 [ 30.955819] ? selinux_bpf_map_free+0x39/0x50 [ 30.960290] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 30.965282] cgroup_fd_array_free+0xd2/0x150 [ 30.969669] bpf_map_free_deferred+0xb0/0xe0 [ 30.974055] process_one_work+0xbbf/0x1b10 [ 30.978262] ? trace_hardirqs_on+0xd/0x10 [ 30.982384] ? pwq_dec_nr_in_flight+0x450/0x450 [ 30.987033] ? __schedule+0x8f3/0x2060 [ 30.990903] ? update_curr+0x2e3/0xa60 [ 30.994774] ? check_noncircular+0x20/0x20 [ 30.998981] ? __lock_is_held+0xb6/0x140 [ 31.003028] ? lock_acquire+0x1d5/0x580 [ 31.006978] ? lock_acquire+0x1d5/0x580 [ 31.010928] ? worker_thread+0x4a3/0x1990 [ 31.015050] ? lock_downgrade+0x980/0x980 [ 31.019170] ? lock_release+0xa40/0xa40 [ 31.023115] ? check_noncircular+0x20/0x20 [ 31.027323] ? do_raw_spin_trylock+0x190/0x190 [ 31.031887] worker_thread+0x223/0x1990 [ 31.035845] ? process_one_work+0x1b10/0x1b10 [ 31.040318] ? _raw_spin_unlock_irq+0x27/0x70 [ 31.044787] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.049867] ? trace_hardirqs_on+0xd/0x10 [ 31.053990] ? _raw_spin_unlock_irq+0x27/0x70 [ 31.058461] ? finish_task_switch+0x1d3/0x740 [ 31.062928] ? finish_task_switch+0x1aa/0x740 [ 31.067403] ? copy_overflow+0x20/0x20 [ 31.071268] ? __schedule+0x8f3/0x2060 [ 31.075156] ? find_held_lock+0x35/0x1d0 [ 31.079191] ? find_held_lock+0x35/0x1d0 [ 31.083230] ? complete+0x62/0x80 [ 31.086659] ? __schedule+0x2060/0x2060 [ 31.090608] ? do_wait_intr_irq+0x3e0/0x3e0 [ 31.094911] ? __lockdep_init_map+0xe4/0x650 [ 31.099304] ? do_raw_spin_trylock+0x190/0x190 [ 31.103860] ? lockdep_init_map+0x9/0x10 [ 31.107897] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 31.112975] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.117963] ? trace_hardirqs_on+0xd/0x10 [ 31.122083] ? __kthread_parkme+0x175/0x240 [ 31.126378] kthread+0x33c/0x400 [ 31.129724] ? process_one_work+0x1b10/0x1b10 [ 31.134201] ? kthread_stop+0x7a0/0x7a0 [ 31.138150] ret_from_fork+0x37/0x50 [ 31.141841] 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 [ 31.160926] RIP: cgroup_fd_array_put_ptr+0x71/0x2a0 RSP: ffff8801d98c7490 [ 31.168079] ---[ end trace eb31ef857c64ed04 ]--- [ 31.172866] Kernel panic - not syncing: Fatal exception [ 31.178644] Dumping ftrace buffer: [ 31.182167] (ftrace buffer empty) [ 31.185851] Kernel Offset: disabled [ 31.189449] Rebooting in 86400 seconds..