LTP cve-2017-5754 test fails on kernel-v4.17-rc2

[Li Wang <liwang@xxxxxxxxxx>]

Hi LKML & LTP,

LTP/meltdown.c fails on upstream kernel-v4.17-rc2 with both kvm and bare-metal system. Please attention!!!

kernel-v4.17-rc2 FAIL

kernel-v4.17-rc1 PASS

=======================

Kernel Version: 4.17.0-rc2
Machine Architecture: x86_64

tst_test.c:1015: INFO: Timeout per run is 0h 50m 00s
meltdown.c:259: INFO: access time: cached = 51, uncached = 343, threshold = 132
meltdown.c:309: INFO: linux_proc_banner is at ffffffff8ba00060
meltdown.c:332: INFO: read ffffffff8ba00060 = 0x25 %
meltdown.c:332: INFO: read ffffffff8ba00061 = 0x73 s
meltdown.c:332: INFO: read ffffffff8ba00062 = 0x20  
meltdown.c:332: INFO: read ffffffff8ba00063 = 0x76 v
meltdown.c:332: INFO: read ffffffff8ba00064 = 0x65 e
meltdown.c:332: INFO: read ffffffff8ba00065 = 0x72 r
meltdown.c:332: INFO: read ffffffff8ba00066 = 0x73 s
meltdown.c:332: INFO: read ffffffff8ba00067 = 0x69 i
meltdown.c:332: INFO: read ffffffff8ba00068 = 0x6f o
meltdown.c:332: INFO: read ffffffff8ba00069 = 0x6e n
meltdown.c:332: INFO: read ffffffff8ba0006a = 0x20  
meltdown.c:332: INFO: read ffffffff8ba0006b = 0x25 %
meltdown.c:332: INFO: read ffffffff8ba0006c = 0x73 s
meltdown.c:342: FAIL: I was able to read your kernel memory!!!

Summary:
passed   0
failed   1
skipped  0
warnings 0

# lscpu
Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                2
On-line CPU(s) list:   0,1
Thread(s) per core:    1
Core(s) per socket:    1
Socket(s):             2
NUMA node(s):          1
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 13
Model name:            QEMU Virtual CPU version (cpu64-rhel6)
Stepping:              3
CPU MHz:               2892.748
BogoMIPS:              5785.49
Hypervisor vendor:     KVM
Virtualization type:   full
L1d cache:             32K
L1i cache:             32K
L2 cache:              4096K
NUMA node0 CPU(s):     0,1
Flags:                 fpu de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 syscall nx lm nopl cpuid pni cx16 hypervisor lahf_lm pti

--

Li Wang
liwang@xxxxxxxxxx