[....] Starting enhanced syslogd: rsyslogd[ 12.732932] audit: type=1400 audit(1516149310.349:5): avc: denied { syslog } for pid=3494 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: [ 19.705586] audit: type=1400 audit(1516149317.322:6): avc: denied { map } for pid=3634 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 '10.128.15.204' (ECDSA) to the list of known hosts. [ 25.957609] audit: type=1400 audit(1516149323.574:7): avc: denied { map } for pid=3648 comm="syzkaller028663" path="/root/syzkaller028663916" 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 [ 26.336212] 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 [ 26.673578] audit: type=1400 audit(1516149324.290:8): avc: denied { sys_admin } for pid=3648 comm="syzkaller028663" 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 [ 26.700535] audit: type=1400 audit(1516149324.317:9): avc: denied { sys_chroot } for pid=3775 comm="syzkaller028663" 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 [ 26.725126] audit: type=1400 audit(1516149324.318:10): avc: denied { map_create } for pid=3775 comm="syzkaller028663" 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 [ 26.747810] audit: type=1400 audit(1516149324.319:11): avc: denied { map_read map_write } for pid=3775 comm="syzkaller028663" 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 [ 26.782912] kasan: CONFIG_KASAN_INLINE enabled [ 26.787592] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 26.795041] general protection fault: 0000 [#1] SMP KASAN [ 26.800579] Dumping ftrace buffer: [ 26.804090] (ftrace buffer empty) [ 26.807772] Modules linked in: [ 26.810937] CPU: 0 PID: 1549 Comm: kworker/0:2 Not tainted 4.15.0-rc8+ #264 [ 26.818009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.827350] Workqueue: events bpf_map_free_deferred [ 26.832342] RIP: 0010:cgroup_fd_array_put_ptr+0x71/0x2a0 [ 26.837761] RSP: 0018:ffff8801d35af490 EFLAGS: 00010a02 [ 26.843100] RAX: 10f40039400001e5 RBX: 1ffff1003a6b5e92 RCX: ffffffff8180f5a5 [ 26.850339] RDX: 0000000000000000 RSI: ffff8801d8b55464 RDI: 87a001ca00000f2b [ 26.857578] RBP: ffff8801d35af518 R08: 1ffff1003a6b5e70 R09: 0000000000000000 [ 26.864819] R10: 0000000000000000 R11: 0000000000000000 R12: 87a001ca00000ebf [ 26.872059] R13: ffff8801d35af4f0 R14: dffffc0000000000 R15: 87a001ca00000ebf [ 26.879307] FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 26.887505] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.893358] CR2: 00000000203e2fe4 CR3: 0000000006822003 CR4: 00000000001606f0 [ 26.900606] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.907849] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.915095] Call Trace: [ 26.917667] ? array_of_map_free+0x180/0x180 [ 26.922054] ? kfree+0xf0/0x260 [ 26.925303] ? selinux_bpf_map_free+0x39/0x50 [ 26.929777] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.934766] cgroup_fd_array_free+0xd2/0x150 [ 26.939149] bpf_map_free_deferred+0xb0/0xe0 [ 26.943534] process_one_work+0xbbf/0x1b10 [ 26.947737] ? trace_hardirqs_on+0xd/0x10 [ 26.951859] ? pwq_dec_nr_in_flight+0x450/0x450 [ 26.956503] ? __schedule+0x8f3/0x2060 [ 26.960361] ? update_curr+0x47b/0xa60 [ 26.964222] ? check_noncircular+0x20/0x20 [ 26.968431] ? __lock_is_held+0xb6/0x140 [ 26.972473] ? lock_acquire+0x1d5/0x580 [ 26.976415] ? lock_acquire+0x1d5/0x580 [ 26.980358] ? worker_thread+0x4a3/0x1990 [ 26.984475] ? lock_downgrade+0x980/0x980 [ 26.988593] ? lock_release+0xa40/0xa40 [ 26.992541] ? do_raw_spin_trylock+0x190/0x190 [ 26.997098] worker_thread+0x223/0x1990 [ 27.001052] ? process_one_work+0x1b10/0x1b10 [ 27.005520] ? _raw_spin_unlock_irq+0x27/0x70 [ 27.009986] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 27.014973] ? trace_hardirqs_on+0xd/0x10 [ 27.019091] ? _raw_spin_unlock_irq+0x27/0x70 [ 27.023556] ? finish_task_switch+0x1d3/0x740 [ 27.028022] ? finish_task_switch+0x1aa/0x740 [ 27.032504] ? copy_overflow+0x20/0x20 [ 27.036381] ? __schedule+0x8f3/0x2060 [ 27.040262] ? lock_downgrade+0x980/0x980 [ 27.044397] ? find_held_lock+0x35/0x1d0 [ 27.048431] ? find_held_lock+0x35/0x1d0 [ 27.052466] ? complete+0x62/0x80 [ 27.055896] ? __schedule+0x2060/0x2060 [ 27.059840] ? do_wait_intr_irq+0x3e0/0x3e0 [ 27.064130] ? __lockdep_init_map+0xe4/0x650 [ 27.068514] ? do_raw_spin_trylock+0x190/0x190 [ 27.073071] ? lockdep_init_map+0x9/0x10 [ 27.077104] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 27.082176] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 27.087163] ? trace_hardirqs_on+0xd/0x10 [ 27.091284] ? __kthread_parkme+0x175/0x240 [ 27.095576] kthread+0x33c/0x400 [ 27.098914] ? process_one_work+0x1b10/0x1b10 [ 27.103376] ? kthread_stop+0x7a0/0x7a0 [ 27.107333] ret_from_fork+0x37/0x50 [ 27.111028] 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 [ 27.130199] RIP: cgroup_fd_array_put_ptr+0x71/0x2a0 RSP: ffff8801d35af490 [ 27.137280] ---[ end trace b83cbbb5164d5c72 ]--- [ 27.142066] Kernel panic - not syncing: Fatal exception [ 27.147864] Dumping ftrace buffer: [ 27.151377] (ftrace buffer empty) [ 27.155061] Kernel Offset: disabled [ 27.158658] Rebooting in 86400 seconds..