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[Po-Hsu Lin <2058422@xxxxxxxxxxxxxxxxxx>]

** Tags added: 5.4 bionic gcp sru-s20240205 ubuntu-qrt-kernel-security

** Also affects: qa-regression-testing
   Importance: Undecided
       Status: New

** Description changed:

  For s2024.02.04 Bionic:linux-gcp-5.4 on instance n2d-standard-64 (suite
  ubuntu_qrt_kernel_security) test case
  KernelSecurityTest.test_360_stacksignal_memleak fails with "Kernel
  memory does not leak to userspace in signalstack (CVE-2009-2847)"
+ 
+   test_360_stacksignal_memleak (__main__.KernelSecurityTest)
+   Kernel memory does not leak to userspace in signalstack (CVE-2009-2847) ... FAIL
+   
+   ======================================================================
+   FAIL: test_360_stacksignal_memleak (__main__.KernelSecurityTest)
+   Kernel memory does not leak to userspace in signalstack (CVE-2009-2847)
+   ----------------------------------------------------------------------
+   Traceback (most recent call last):
+     File "./test-kernel-security.py", line 2148, in test_360_stacksignal_memleak
+       self.assertShellExitEquals(expected, self._unpriv_cmd(["./signal-stack"]))
+     File "/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/testlib.py", line 1321, in assertShellExitEquals
+       self.assertEqual(expected, rc, msg + result + report)
+   AssertionError: Got exit code -11, expected 0
+   Command: 'sudo', '-u', 'ubuntu', './signal-stack'
+   Output:
+   [+] Checking platform...
+   [+] sizeof(stack_t) = 24
+   [+] Correct size, 64-bit platform.
+   [+] Checking for stack_t hole...
+   [+] ss_flags end (12) != ss_size start (16)
+   [+] Hole in stack_t present!
+   [+] Ready to call sigaltstack.
+   
+   
+   
+   ----------------------------------------------------------------------
+   Ran 1 test in 0.096s
+   
+   FAILED (failures=1)
+ 16:25:18 INFO | 	END ERROR	ubuntu_qrt_kernel_security.KernelSecurityTest.test_360_stacksignal_memleak	
  
  This particular test case has not failed on any previous cycles for
  Bionic:linux-gcp-5.4, but the failure is the same between run #1 and #2
  of the test. A 3rd run is in progress, and if the results are any
  different I will link them here.
  
  I have attached the full console output to this bug as well.

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https://bugs.launchpad.net/bugs/2058422

Title:
  KernelSecurityTest.test_360_stacksignal_memleak fails

Status in QA Regression Testing:
  New
Status in ubuntu-kernel-tests:
  New

Bug description:
  For s2024.02.04 Bionic:linux-gcp-5.4 on instance n2d-standard-64
  (suite ubuntu_qrt_kernel_security) test case
  KernelSecurityTest.test_360_stacksignal_memleak fails with "Kernel
  memory does not leak to userspace in signalstack (CVE-2009-2847)"

    test_360_stacksignal_memleak (__main__.KernelSecurityTest)
    Kernel memory does not leak to userspace in signalstack (CVE-2009-2847) ... FAIL
    
    ======================================================================
    FAIL: test_360_stacksignal_memleak (__main__.KernelSecurityTest)
    Kernel memory does not leak to userspace in signalstack (CVE-2009-2847)
    ----------------------------------------------------------------------
    Traceback (most recent call last):
      File "./test-kernel-security.py", line 2148, in test_360_stacksignal_memleak
        self.assertShellExitEquals(expected, self._unpriv_cmd(["./signal-stack"]))
      File "/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/testlib.py", line 1321, in assertShellExitEquals
        self.assertEqual(expected, rc, msg + result + report)
    AssertionError: Got exit code -11, expected 0
    Command: 'sudo', '-u', 'ubuntu', './signal-stack'
    Output:
    [+] Checking platform...
    [+] sizeof(stack_t) = 24
    [+] Correct size, 64-bit platform.
    [+] Checking for stack_t hole...
    [+] ss_flags end (12) != ss_size start (16)
    [+] Hole in stack_t present!
    [+] Ready to call sigaltstack.
    
    
    
    ----------------------------------------------------------------------
    Ran 1 test in 0.096s
    
    FAILED (failures=1)
  16:25:18 INFO | 	END ERROR	ubuntu_qrt_kernel_security.KernelSecurityTest.test_360_stacksignal_memleak	

  This particular test case has not failed on any previous cycles for
  Bionic:linux-gcp-5.4, but the failure is the same between run #1 and
  #2 of the test. A 3rd run is in progress, and if the results are any
  different I will link them here.

  I have attached the full console output to this bug as well.

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