[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[   98.381177] audit: type=1800 audit(1549139426.425:25): pid=10772 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0
[   98.400388] audit: type=1800 audit(1549139426.445:26): pid=10772 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0
[   98.420347] audit: type=1800 audit(1549139426.455:27): pid=10772 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.10.57' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [  125.448975] ==================================================================
[  125.456426] BUG: KMSAN: uninit-value in __se_sys_waitid+0x329/0xb20
[  125.462818] CPU: 0 PID: 10923 Comm: syz-executor790 Not tainted 5.0.0-rc1+ #9
[  125.470071] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  125.479405] Call Trace:
[  125.481986]  dump_stack+0x173/0x1d0
[  125.485613]  kmsan_report+0x12e/0x2a0
[  125.489411]  kmsan_internal_check_memory+0x9e4/0xb10
[  125.494520]  kmsan_check_memory+0xd/0x10
[  125.498566]  __se_sys_waitid+0x329/0xb20
[  125.502642]  ? __msan_metadata_ptr_for_store_4+0x13/0x20
[  125.508146]  ? prepare_exit_to_usermode+0x114/0x420
[  125.515609]  ? kmsan_get_shadow_origin_ptr+0x60/0x440
[  125.520838]  ? syscall_return_slowpath+0xb2/0x650
[  125.525680]  __x64_sys_waitid+0x62/0x80
[  125.529644]  do_syscall_64+0xbc/0xf0
[  125.533348]  entry_SYSCALL_64_after_hwframe+0x63/0xe7
[  125.538528] RIP: 0033:0x43ffb9
[  125.541770] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[  125.560665] RSP: 002b:00007ffc16b98608 EFLAGS: 00000246 ORIG_RAX: 00000000000000f7
[  125.568358] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043ffb9
[  125.575619] RDX: 00000000200000c0 RSI: 0000000000000000 RDI: 0000000000000002
[  125.582873] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000
[  125.590129] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000401840
[  125.597382] R13: 00000000004018d0 R14: 0000000000000000 R15: 0000000000000000
[  125.604649] 
[  125.606275] Local variable description: ----__pu_val120.i@__se_sys_waitid
[  125.613178] Variable was created at:
[  125.616909]  __se_sys_waitid+0x18c/0xb20
[  125.620952]  __x64_sys_waitid+0x62/0x80
[  125.624901] 
[  125.626511] Bytes 0-3 of 4 are uninitialized
[  125.630897] Memory access of size 4 starts at ffff88809b73fe78
[  125.636847] ==================================================================
[  125.644188] Disabling lock debugging due to kernel taint
[  125.649621] Kernel panic - not syncing: panic_on_warn set ...
[  125.655490] CPU: 0 PID: 10923 Comm: syz-executor790 Tainted: G    B             5.0.0-rc1+ #9
[  125.664131] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  125.673463] Call Trace:
[  125.676041]  dump_stack+0x173/0x1d0
[  125.679663]  panic+0x3d1/0xb01
[  125.682880]  kmsan_report+0x293/0x2a0
[  125.686677]  kmsan_internal_check_memory+0x9e4/0xb10
[  125.691786]  kmsan_check_memory+0xd/0x10
[  125.695843]  __se_sys_waitid+0x329/0xb20
[  125.699922]  ? __msan_metadata_ptr_for_store_4+0x13/0x20
[  125.705365]  ? prepare_exit_to_usermode+0x114/0x420
[  125.710365]  ? kmsan_get_shadow_origin_ptr+0x60/0x440
[  125.715548]  ? syscall_return_slowpath+0xb2/0x650
[  125.720403]  __x64_sys_waitid+0x62/0x80
[  125.724364]  do_syscall_64+0xbc/0xf0
[  125.728069]  entry_SYSCALL_64_after_hwframe+0x63/0xe7
[  125.733245] RIP: 0033:0x43ffb9
[  125.736428] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[  125.755312] RSP: 002b:00007ffc16b98608 EFLAGS: 00000246 ORIG_RAX: 00000000000000f7
[  125.763011] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043ffb9
[  125.770263] RDX: 00000000200000c0 RSI: 0000000000000000 RDI: 0000000000000002
[  125.777516] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000
[  125.784882] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000401840
[  125.792135] R13: 00000000004018d0 R14: 0000000000000000 R15: 0000000000000000
[  125.800336] Kernel Offset: disabled
[  125.803964] Rebooting in 86400 seconds..