test_060_nx in ubuntu_qrt_kernel_security failed on B-gke-5.4 since 5.4.0-1071-gke

[Po-Hsu Lin]

Test failed since 5.4.0-1071.76~18.04.3-gke AMD64 (works ok with 5.4.0-1068-gke)

$ sudo python2 ./test-kernel-security.py -v KernelSecurityTest.test_060_nx
Running test: './test-kernel-security.py' distro: 'Ubuntu 18.04' kernel: '5.4.0-1071.76~18.04.3 (Ubuntu 5.4.0-1071.76~18.04.3-gke 5.4.181)' arch: 'amd64' uid: 0/0 SUDO_USER: 'google')
test_060_nx (__main__.KernelSecurityTest)
NX bit is working ... FAIL

======================================================================
FAIL: test_060_nx (__main__.KernelSecurityTest)
NX bit is working
----------------------------------------------------------------------
Traceback (most recent call last):
  File "./test-kernel-security.py", line 575, in test_060_nx
    self.assertShellExitEquals(rie_expected, ["./nx-test-rie", "data"])
  File "/home/google/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/testlib.py", line 1203, in assertShellExitEquals
    self.assertEqual(expected, rc, msg + result + report)
AssertionError: Got exit code -11, expected 0
Command: './nx-test-rie', 'data'
Output:
rodata:0x55f37cf22098
data: 0x55f37d123010
bss: 0x55f37d133040
brk: 0x55f37edd7270
rw: 0x7f9b635da000
rwx: 0x7f9b635d9000
stack: 0x7ffd6cde4b90
Dump of /proc/self/maps:
55f37cf21000-55f37cf23000 r-xp 00000000 08:01 272969 /home/google/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/kernel-security/nx/nx-test-rie
55f37d122000-55f37d123000 r--p 00001000 08:01 272969 /home/google/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/kernel-security/nx/nx-test-rie
55f37d123000-55f37d124000 rw-p 00002000 08:01 272969 /home/google/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/kernel-security/nx/nx-test-rie
55f37d124000-55f37d134000 rw-p 00000000 00:00 0
55f37edd6000-55f37edf7000 rw-p 00000000 00:00 0 [heap]
7f9b62fc1000-7f9b631a8000 r-xp 00000000 08:01 2245 /lib/x86_64-linux-gnu/libc-2.27.so
7f9b631a8000-7f9b633a8000 ---p 001e7000 08:01 2245 /lib/x86_64-linux-gnu/libc-2.27.so
7f9b633a8000-7f9b633ac000 r--p 001e7000 08:01 2245 /lib/x86_64-linux-gnu/libc-2.27.so
7f9b633ac000-7f9b633ae000 rw-p 001eb000 08:01 2245 /lib/x86_64-linux-gnu/libc-2.27.so
7f9b633ae000-7f9b633b2000 rw-p 00000000 00:00 0
7f9b633b2000-7f9b633db000 r-xp 00000000 08:01 2240 /lib/x86_64-linux-gnu/ld-2.27.so
7f9b635cf000-7f9b635d1000 rw-p 00000000 00:00 0
7f9b635d9000-7f9b635da000 rwxp 00000000 00:00 0
7f9b635da000-7f9b635db000 rw-p 00000000 00:00 0
7f9b635db000-7f9b635dc000 r--p 00029000 08:01 2240 /lib/x86_64-linux-gnu/ld-2.27.so
7f9b635dc000-7f9b635dd000 rw-p 0002a000 08:01 2240 /lib/x86_64-linux-gnu/ld-2.27.so
7f9b635dd000-7f9b635de000 rw-p 00000000 00:00 0
7ffd6cdc6000-7ffd6cde7000 rwxp 00000000 00:00 0 [stack]
7ffd6cdfa000-7ffd6cdfd000 r--p 00000000 00:00 0 [vvar]
7ffd6cdfd000-7ffd6cdfe000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0 [vsyscall]
Attempting to execute function at 0x55f37d123010
If this program seg-faults, the region was enforced as non-executable...

----------------------------------------------------------------------
Ran 1 test in 0.880s

FAILED (failures=1)

Notet that this issue does not exist on B-gkeop-5.4

[Po-Hsu Lin (cypressyew)]

Similar bug reported for F-gcp-fips - bug 1968841
Maybe this commit need to be expand with -gke?
https://git.launchpad.net/qa-regression-testing/commit/?id=00e4e841efcad9d0a2dee19283ff0aeb1c6f9fe5

[Steve Beattie (sbeattie)]

Sorry for the delay, I went ahead and merged the fix for this. Thanks!