[....] Starting enhanced syslogd: rsyslogd[ 5.451832] audit: type=1400 audit(1513403752.563:5): avc: denied { syslog } for pid=2974 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: [ 11.208513] audit: type=1400 audit(1513403758.320:6): avc: denied { map } for pid=3110 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 'ci-upstream-next-kasan-gce-6,10.128.0.48' (ECDSA) to the list of known hosts. [ 121.424619] audit: type=1400 audit(1513403868.536:7): avc: denied { map } for pid=3129 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2017/12/16 05:57:48 parsed 1 programs 2017/12/16 05:57:48 executed programs: 0 [ 121.872742] audit: type=1400 audit(1513403868.984:8): avc: denied { map } for pid=3129 comm="syz-execprog" path="/root/syzkaller-shm091238503" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 2017/12/16 05:57:53 executed programs: 818 2017/12/16 05:57:58 executed programs: 1603 2017/12/16 05:58:04 executed programs: 2380 2017/12/16 05:58:09 executed programs: 3152 2017/12/16 05:58:14 executed programs: 3933 2017/12/16 05:58:19 executed programs: 4701 2017/12/16 05:58:24 executed programs: 5459 2017/12/16 05:58:29 executed programs: 6222 2017/12/16 05:58:34 executed programs: 7000 2017/12/16 05:58:39 executed programs: 7779 2017/12/16 05:58:44 executed programs: 8536 2017/12/16 05:58:49 executed programs: 9307 2017/12/16 05:58:54 executed programs: 10092 result: failed=false hanged=false err=executor 6: failed: pthread_create failed (errno 28) clone failed (errno 28) loop failed (errno 0) pthread_create failed (errno 28) clone failed (errno 28) loop failed (errno 0) result: failed=false hanged=false err=executor 0: failed: pthread_create failed (errno 28) clone failed (errno 28) loop failed (errno 0) pthread_create failed (errno 28) clone failed (errno 28) loop failed (errno 0) result: failed=false hanged=false err=failed to start executor binary: fork/exec /root/syz-executor0: no space left on device result: failed=false hanged=false err=failed to start executor binary: fork/exec /root/syz-executor0: no space left on device result: failed=false hanged=false err=EOF sandbox fork failed (errno 28) result: failed=false hanged=false err=executor 5: failed: clone failed (errno 28) loop failed (errno 0) clone failed (errno 28) loop failed (errno 0) [ 191.774512] BUG: unable to handle kernel NULL pointer dereference at (null) [ 191.782523] IP: proc_flush_task+0x8a/0x1c0 [ 191.786720] PGD 214dd0067 P4D 214dd0067 PUD 2137d6067 PMD 0 [ 191.792490] Oops: 0000 [#1] SMP [ 191.795736] Dumping ftrace buffer: [ 191.799239] (ftrace buffer empty) [ 191.802920] Modules linked in: [ 191.806083] CPU: 0 PID: 3142 Comm: syz-executor3 Not tainted 4.15.0-rc3-next-20171214+ #67 [ 191.814449] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 191.823774] RIP: 0010:proc_flush_task+0x8a/0x1c0 [ 191.828493] RSP: 0018:ffffc9000189bc30 EFLAGS: 00010282 [ 191.833817] RAX: 0000000000000001 RBX: 0000000000000002 RCX: ffffffff825bf264 [ 191.841050] RDX: 0000000000000000 RSI: ffffc9000189bc58 RDI: ffffc9000189bc4d [ 191.848281] RBP: ffffc9000189bc90 R08: 0000000000000000 R09: 0000000000000002 [ 191.855512] R10: ffffc9000189bad8 R11: 0000000000000002 R12: ffffc9000189bc4d [ 191.862744] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000004 [ 191.869977] FS: 0000000001470940(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 [ 191.878165] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 191.884010] CR2: 0000000000000000 CR3: 0000000213771003 CR4: 00000000001606f0 [ 191.891251] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 191.898482] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 191.905715] Call Trace: [ 191.908274] release_task+0xf4/0x750 [ 191.911951] ? trace_hardirqs_on_caller+0x130/0x1b0 [ 191.916930] wait_consider_task+0xe83/0xfb0 [ 191.921215] do_wait+0x189/0x3d0 [ 191.924543] kernel_wait4+0xac/0x170 [ 191.928222] ? task_stopped_code+0x90/0x90 [ 191.932420] SYSC_wait4+0xb0/0xc0 [ 191.935837] ? __might_fault+0xb8/0xd0 [ 191.939687] ? _copy_to_user+0x7a/0xa0 [ 191.943537] ? trace_hardirqs_on_caller+0x130/0x1b0 [ 191.948518] SyS_wait4+0x2c/0x40 [ 191.951847] ? SyS_wait4+0x2c/0x40 [ 191.955352] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 191.960069] RIP: 0033:0x40cdba [ 191.963221] RSP: 002b:00007fff9cfdb6b8 EFLAGS: 00000246 ORIG_RAX: 000000000000003d [ 191.970890] RAX: ffffffffffffffda RBX: 0000000001470914 RCX: 000000000040cdba [ 191.978124] RDX: 0000000040000001 RSI: 00007fff9cfdb6dc RDI: ffffffffffffffff [ 191.985357] RBP: 00000000000024a9 R08: 0000000000000001 R09: 0000000001470940 [ 191.992589] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000024a9 [ 191.999824] R13: 000000000000001f R14: 000000000002eceb R15: 0000000000000001 2017/12/16 05:58:59 executed programs: 10840 [ 192.007059] Code: d0 48 c1 e2 04 44 8b 3c 11 48 c7 c2 ec d7 f5 82 44 8b 68 30 48 8b 40 38 4c 8b 70 58 44 89 e9 e8 dd 83 10 01 89 45 cc 48 8d 75 c8 <49> 8b 3e e8 6e 9d f7 ff 48 85 c0 48 89 45 a8 74 1d e8 60 2d e0 [ 192.026083] RIP: proc_flush_task+0x8a/0x1c0 RSP: ffffc9000189bc30 [ 192.032272] CR2: 0000000000000000 [ 192.035766] ---[ end trace 96968f6879f5e625 ]--- [ 192.040764] Kernel panic - not syncing: Fatal exception [ 192.046549] Dumping ftrace buffer: [ 192.050053] (ftrace buffer empty) [ 192.053726] Kernel Offset: disabled [ 192.057316] Rebooting in 86400 seconds..