[....] Starting enhanced syslogd: rsyslogd[ 12.641683] audit: type=1400 audit(1515786637.944:5): avc: denied { syslog } for pid=3346 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: [ 18.580358] audit: type=1400 audit(1515786643.883:6): avc: denied { map } for pid=3486 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 '10.128.0.55' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 24.819729] audit: type=1400 audit(1515786650.122:7): avc: denied { map } for pid=3500 comm="syzkaller736742" path="/root/syzkaller736742401" 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 [ 24.938618] audit: type=1400 audit(1515786650.241:8): avc: denied { sys_admin } for pid=3500 comm="syzkaller736742" 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 [ 25.124459] audit: type=1400 audit(1515786650.427:9): avc: denied { sys_chroot } for pid=3523 comm="syzkaller736742" 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 [ 25.148993] audit: type=1400 audit(1515786650.429:10): avc: denied { map_create } for pid=3523 comm="syzkaller736742" 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 [ 25.172137] audit: type=1400 audit(1515786650.429:11): avc: denied { map_read map_write } for pid=3523 comm="syzkaller736742" 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 [ 25.212176] kasan: CONFIG_KASAN_INLINE enabled [ 25.216828] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 25.224223] general protection fault: 0000 [#1] SMP KASAN [ 25.229742] Dumping ftrace buffer: [ 25.233253] (ftrace buffer empty) [ 25.236931] Modules linked in: [ 25.240095] CPU: 1 PID: 23 Comm: kworker/1:1 Not tainted 4.15.0-rc7+ #258 [ 25.246982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.256316] Workqueue: events bpf_map_free_deferred [ 25.261303] RIP: 0010:cgroup_fd_array_put_ptr+0x71/0x2a0 [ 25.266722] RSP: 0018:ffff8801d98af490 EFLAGS: 00010a07 [ 25.272053] RAX: 14580036c00001c5 RBX: 1ffff1003b315e92 RCX: ffffffff8180f495 [ 25.279289] RDX: 0000000000000000 RSI: ffff8801beae9ea4 RDI: a2c001b600000e2f [ 25.286530] RBP: ffff8801d98af518 R08: 1ffff1003b315e70 R09: 0000000000000000 [ 25.293767] R10: 0000000000000000 R11: 0000000000000000 R12: a2c001b600000dc3 [ 25.301006] R13: ffff8801d98af4f0 R14: dffffc0000000000 R15: a2c001b600000dc3 [ 25.308249] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 25.316440] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.322288] CR2: 00000000203e2fe4 CR3: 0000000006822005 CR4: 00000000001606e0 [ 25.329528] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.336770] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.344007] Call Trace: [ 25.346584] ? array_of_map_free+0x180/0x180 [ 25.350962] ? kfree+0xf0/0x260 [ 25.354208] ? selinux_bpf_map_free+0x39/0x50 [ 25.358674] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.363669] cgroup_fd_array_free+0xd2/0x150 [ 25.368049] bpf_map_free_deferred+0xb0/0xe0 [ 25.372433] process_one_work+0xbbf/0x1b10 [ 25.376721] ? trace_hardirqs_on+0xd/0x10 [ 25.380849] ? pwq_dec_nr_in_flight+0x450/0x450 [ 25.385489] ? __schedule+0x8f3/0x2060 [ 25.389349] ? update_curr+0x2e3/0xa60 [ 25.393208] ? check_noncircular+0x20/0x20 [ 25.397410] ? __lock_is_held+0xb6/0x140 [ 25.401458] ? lock_acquire+0x1d5/0x580 [ 25.405404] ? lock_acquire+0x1d5/0x580 [ 25.409351] ? worker_thread+0x4a3/0x1990 [ 25.413465] ? lock_downgrade+0x980/0x980 [ 25.417581] ? lock_release+0xa40/0xa40 [ 25.421521] ? check_noncircular+0x20/0x20 [ 25.425725] ? do_raw_spin_trylock+0x190/0x190 [ 25.430279] worker_thread+0x223/0x1990 [ 25.434229] ? process_one_work+0x1b10/0x1b10 [ 25.438695] ? _raw_spin_unlock_irq+0x27/0x70 [ 25.443160] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.448144] ? trace_hardirqs_on+0xd/0x10 [ 25.452264] ? _raw_spin_unlock_irq+0x27/0x70 [ 25.456733] ? finish_task_switch+0x1d3/0x740 [ 25.461193] ? finish_task_switch+0x1aa/0x740 [ 25.465657] ? copy_overflow+0x20/0x20 [ 25.469517] ? __schedule+0x8f3/0x2060 [ 25.473388] ? find_held_lock+0x35/0x1d0 [ 25.477419] ? find_held_lock+0x35/0x1d0 [ 25.481463] ? complete+0x62/0x80 [ 25.484887] ? __schedule+0x2060/0x2060 [ 25.488836] ? do_wait_intr_irq+0x3e0/0x3e0 [ 25.493122] ? __lockdep_init_map+0xe4/0x650 [ 25.497499] ? do_raw_spin_trylock+0x190/0x190 [ 25.502048] ? lockdep_init_map+0x9/0x10 [ 25.506077] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 25.511152] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.516138] ? trace_hardirqs_on+0xd/0x10 [ 25.520252] ? __kthread_parkme+0x175/0x240 [ 25.524540] kthread+0x33c/0x400 [ 25.527881] ? process_one_work+0x1b10/0x1b10 [ 25.532342] ? kthread_stop+0x7a0/0x7a0 [ 25.536304] ret_from_fork+0x24/0x30 [ 25.539989] Code: 45 88 30 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 [ 25.559073] RIP: cgroup_fd_array_put_ptr+0x71/0x2a0 RSP: ffff8801d98af490 [ 25.566188] ---[ end trace b219379f16c670bd ]--- [ 25.570965] Kernel panic - not syncing: Fatal exception [ 25.576765] Dumping ftrace buffer: [ 25.580280] (ftrace buffer empty) [ 25.583955] Kernel Offset: disabled [ 25.587549] Rebooting in 86400 seconds..