[Kernel-packages] [Bug 1747630] Re: Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
Precise ESM reached end of life in April 2019.
** Changed in: linux (Ubuntu)
Status: Confirmed => Invalid
** Changed in: ubuntu-kernel-tests
Status: Confirmed => Invalid
** Changed in: qa-regression-testing
Status: New => Invalid
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Title:
Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
Status in QA Regression Testing:
Invalid
Status in ubuntu-kernel-tests:
Invalid
Status in linux package in Ubuntu:
Invalid
Bug description:
This issue can be reproduced in 3.2.0-133 in proposed and 3.2.0-131.
So it should not be considered as a regression.
We didn't spot this issue before, until I'm testing 3.2 kernel on one
of the laptop (CID 201307-13930) in Cert lab instead of using our
regular regression-testing test pool from kernel team this cycle.
==
FAIL: test_022_aslr_hardy_vdso (__main__.KernelSecurityTest)
ASLR of vdso
--
Traceback (most recent call last):
File "./test-kernel-security.py", line 1863, in test_022_aslr_hardy_vdso
self._test_aslr('vdso', expected)
File "./test-kernel-security.py", line 1795, in _test_aslr
self._test_aslr_all(area, expected, "unlimited stack %s" % area)
File "./test-kernel-security.py", line 1772, in _test_aslr_all
self._test_aslr_exec(area, expected, target, name)
File "./test-kernel-security.py", line 1765, in _test_aslr_exec
self.assertShellExitEquals(aslr_expected, ["./%s" % (target), area,
"--verbose"], msg="%s:\n" % name)
File
"/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/testlib.py",
line 1134, in assertShellExitEquals
self.assertEqual(expected, rc, msg + result + report)
AssertionError: unlimited stack vdso native:
Got exit code 1, expected 0
Command: './aslr', 'vdso', '--verbose'
Output:
Checking ASLR of vdso:
0x40022000
0x40022000
0x40022000
FAIL: ASLR not functional (vdso always at 0x40022000)
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[Kernel-packages] [Bug 1747630] Re: Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
** Tags added: ubuntu-qrt-kernel-security
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Title:
Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
Status in QA Regression Testing:
New
Status in ubuntu-kernel-tests:
Confirmed
Status in linux package in Ubuntu:
Confirmed
Bug description:
This issue can be reproduced in 3.2.0-133 in proposed and 3.2.0-131.
So it should not be considered as a regression.
We didn't spot this issue before, until I'm testing 3.2 kernel on one
of the laptop (CID 201307-13930) in Cert lab instead of using our
regular regression-testing test pool from kernel team this cycle.
==
FAIL: test_022_aslr_hardy_vdso (__main__.KernelSecurityTest)
ASLR of vdso
--
Traceback (most recent call last):
File "./test-kernel-security.py", line 1863, in test_022_aslr_hardy_vdso
self._test_aslr('vdso', expected)
File "./test-kernel-security.py", line 1795, in _test_aslr
self._test_aslr_all(area, expected, "unlimited stack %s" % area)
File "./test-kernel-security.py", line 1772, in _test_aslr_all
self._test_aslr_exec(area, expected, target, name)
File "./test-kernel-security.py", line 1765, in _test_aslr_exec
self.assertShellExitEquals(aslr_expected, ["./%s" % (target), area,
"--verbose"], msg="%s:\n" % name)
File
"/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/testlib.py",
line 1134, in assertShellExitEquals
self.assertEqual(expected, rc, msg + result + report)
AssertionError: unlimited stack vdso native:
Got exit code 1, expected 0
Command: './aslr', 'vdso', '--verbose'
Output:
Checking ASLR of vdso:
0x40022000
0x40022000
0x40022000
FAIL: ASLR not functional (vdso always at 0x40022000)
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[Kernel-packages] [Bug 1747630] Re: Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
Okay, the reason this test (and bug 1717856) fail sporadically is that
ASLR in precise for i386 has very low number of random values for vdso
and shared library offsets, when ulimits are set such that unlimited
stack sizes are allowed:
ubuntu@sec-precise-i386:~/tests/qrt-test-kernel-security$ uname -a
Linux sec-precise-i386 3.2.0-142-generic #189-Ubuntu SMP Fri Jul 5 18:40:43
UTC 2019 i686 i686 i386 GNU/Linux
ubuntu@sec-precise-i386:~/tests/qrt-test-kernel-security$ ulimit -s unlimited
ubuntu@sec-precise-i386:~/tests/qrt-test-kernel-security$ ulimit -s
unlimited
ubuntu@sec-precise-i386:~/tests/qrt-test-kernel-security$ for ((i=0; i<1;
i++)) ; do ./kernel-security/aslr/aslr --report vdso ; done | sort | uniq -c
1273 0x4000
8662 0x40022000
65 0x40026000
Yes, all of 3 values, and 86% of the invocations result in one value.
The shared library base values are slightly better, but not much:
ubuntu@sec-precise-i386:~/tests/qrt-test-kernel-security$ for ((i=0; i<1;
i++)) ; do ./kernel-security/aslr/aslr --report libs ; done | sort | uniq -c
499 0x40003d80
285 0x40016d80
566 0x40025d80
7608 0x40038d80
295 0x4003cd80
250 0x4003dd80
167 0x4003ed80
153 0x4003fd80
177 0x40040d80
Compare this with the 3.13 results:
ubuntu@sec-trusty-i386:~/tests/qrt-test-kernel-security$ uname -a
Linux sec-trusty-i386 3.13.0-170-generic #220-Ubuntu SMP Thu May 9 12:41:17
UTC 2019 i686 i686 i686 GNU/Linux
ubuntu@sec-trusty-i386:~/tests/qrt-test-kernel-security$ ulimit -s unlimited
ubuntu@sec-trusty-i386:~/tests/qrt-test-kernel-security$ ulimit -s
unlimited
ubuntu@sec-trusty-i386:~/tests/qrt-test-kernel-security$ for ((i=0; i<1;
i++)) ; do ./kernel-security/aslr/aslr --report vdso ; done | sort | uniq -c |
wc -l
256
(output is piped into wc -l, because there are 256 distinct results.) So
8 bits of randomisation, which is not great, but better than >2.
The tests were added in response to http://hmarco.org/bugs/CVE-2016-3672
-Unlimiting-the-stack-not-longer-disables-ASLR.html and fixes were
applied for the 3.2.0-104.145 kernel.
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2016-3672
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Title:
Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
Status in QA Regression Testing:
New
Status in ubuntu-kernel-tests:
Confirmed
Status in linux package in Ubuntu:
Confirmed
Bug description:
This issue can be reproduced in 3.2.0-133 in proposed and 3.2.0-131.
So it should not be considered as a regression.
We didn't spot this issue before, until I'm testing 3.2 kernel on one
of the laptop (CID 201307-13930) in Cert lab instead of using our
regular regression-testing test pool from kernel team this cycle.
==
FAIL: test_022_aslr_hardy_vdso (__main__.KernelSecurityTest)
ASLR of vdso
--
Traceback (most recent call last):
File "./test-kernel-security.py", line 1863, in test_022_aslr_hardy_vdso
self._test_aslr('vdso', expected)
File "./test-kernel-security.py", line 1795, in _test_aslr
self._test_aslr_all(area, expected, "unlimited stack %s" % area)
File "./test-kernel-security.py", line 1772, in _test_aslr_all
self._test_aslr_exec(area, expected, target, name)
File "./test-kernel-security.py", line 1765, in _test_aslr_exec
self.assertShellExitEquals(aslr_expected, ["./%s" % (target), area,
"--verbose"], msg="%s:\n" % name)
File
"/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/testlib.py",
line 1134, in assertShellExitEquals
self.assertEqual(expected, rc, msg + result + report)
AssertionError: unlimited stack vdso native:
Got exit code 1, expected 0
Command: './aslr', 'vdso', '--verbose'
Output:
Checking ASLR of vdso:
0x40022000
0x40022000
0x40022000
FAIL: ASLR not functional (vdso always at 0x40022000)
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[Kernel-packages] [Bug 1747630] Re: Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
That said, at this point, I don't believe we are likely to fix this for
3.2 kernels, so adjusting the QRT test may be in order.
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Title:
Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
Status in QA Regression Testing:
New
Status in ubuntu-kernel-tests:
Confirmed
Status in linux package in Ubuntu:
Confirmed
Bug description:
This issue can be reproduced in 3.2.0-133 in proposed and 3.2.0-131.
So it should not be considered as a regression.
We didn't spot this issue before, until I'm testing 3.2 kernel on one
of the laptop (CID 201307-13930) in Cert lab instead of using our
regular regression-testing test pool from kernel team this cycle.
==
FAIL: test_022_aslr_hardy_vdso (__main__.KernelSecurityTest)
ASLR of vdso
--
Traceback (most recent call last):
File "./test-kernel-security.py", line 1863, in test_022_aslr_hardy_vdso
self._test_aslr('vdso', expected)
File "./test-kernel-security.py", line 1795, in _test_aslr
self._test_aslr_all(area, expected, "unlimited stack %s" % area)
File "./test-kernel-security.py", line 1772, in _test_aslr_all
self._test_aslr_exec(area, expected, target, name)
File "./test-kernel-security.py", line 1765, in _test_aslr_exec
self.assertShellExitEquals(aslr_expected, ["./%s" % (target), area,
"--verbose"], msg="%s:\n" % name)
File
"/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/testlib.py",
line 1134, in assertShellExitEquals
self.assertEqual(expected, rc, msg + result + report)
AssertionError: unlimited stack vdso native:
Got exit code 1, expected 0
Command: './aslr', 'vdso', '--verbose'
Output:
Checking ASLR of vdso:
0x40022000
0x40022000
0x40022000
FAIL: ASLR not functional (vdso always at 0x40022000)
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[Kernel-packages] [Bug 1747630] Re: Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
One more thing, I can see this issue on our lab HW, onibi with i386
Precise.
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Title:
Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
Status in QA Regression Testing:
New
Status in ubuntu-kernel-tests:
Confirmed
Status in linux package in Ubuntu:
Confirmed
Bug description:
This issue can be reproduced in 3.2.0-133 in proposed and 3.2.0-131.
So it should not be considered as a regression.
We didn't spot this issue before, until I'm testing 3.2 kernel on one
of the laptop (CID 201307-13930) in Cert lab instead of using our
regular regression-testing test pool from kernel team this cycle.
==
FAIL: test_022_aslr_hardy_vdso (__main__.KernelSecurityTest)
ASLR of vdso
--
Traceback (most recent call last):
File "./test-kernel-security.py", line 1863, in test_022_aslr_hardy_vdso
self._test_aslr('vdso', expected)
File "./test-kernel-security.py", line 1795, in _test_aslr
self._test_aslr_all(area, expected, "unlimited stack %s" % area)
File "./test-kernel-security.py", line 1772, in _test_aslr_all
self._test_aslr_exec(area, expected, target, name)
File "./test-kernel-security.py", line 1765, in _test_aslr_exec
self.assertShellExitEquals(aslr_expected, ["./%s" % (target), area,
"--verbose"], msg="%s:\n" % name)
File
"/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/testlib.py",
line 1134, in assertShellExitEquals
self.assertEqual(expected, rc, msg + result + report)
AssertionError: unlimited stack vdso native:
Got exit code 1, expected 0
Command: './aslr', 'vdso', '--verbose'
Output:
Checking ASLR of vdso:
0x40022000
0x40022000
0x40022000
FAIL: ASLR not functional (vdso always at 0x40022000)
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[Kernel-packages] [Bug 1747630] Re: Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
** Also affects: qa-regression-testing
Importance: Undecided
Status: New
--
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Title:
Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
Status in QA Regression Testing:
New
Status in ubuntu-kernel-tests:
Confirmed
Status in linux package in Ubuntu:
Confirmed
Bug description:
This issue can be reproduced in 3.2.0-133 in proposed and 3.2.0-131.
So it should not be considered as a regression.
We didn't spot this issue before, until I'm testing 3.2 kernel on one
of the laptop (CID 201307-13930) in Cert lab instead of using our
regular regression-testing test pool from kernel team this cycle.
==
FAIL: test_022_aslr_hardy_vdso (__main__.KernelSecurityTest)
ASLR of vdso
--
Traceback (most recent call last):
File "./test-kernel-security.py", line 1863, in test_022_aslr_hardy_vdso
self._test_aslr('vdso', expected)
File "./test-kernel-security.py", line 1795, in _test_aslr
self._test_aslr_all(area, expected, "unlimited stack %s" % area)
File "./test-kernel-security.py", line 1772, in _test_aslr_all
self._test_aslr_exec(area, expected, target, name)
File "./test-kernel-security.py", line 1765, in _test_aslr_exec
self.assertShellExitEquals(aslr_expected, ["./%s" % (target), area,
"--verbose"], msg="%s:\n" % name)
File
"/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/testlib.py",
line 1134, in assertShellExitEquals
self.assertEqual(expected, rc, msg + result + report)
AssertionError: unlimited stack vdso native:
Got exit code 1, expected 0
Command: './aslr', 'vdso', '--verbose'
Output:
Checking ASLR of vdso:
0x40022000
0x40022000
0x40022000
FAIL: ASLR not functional (vdso always at 0x40022000)
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[Kernel-packages] [Bug 1747630] Re: Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
Note that I just found that this test is a bit flaky, the fail rate for this is
about 50%
Just like bug 1717856
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Title:
Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
Status in ubuntu-kernel-tests:
Confirmed
Status in linux package in Ubuntu:
Confirmed
Bug description:
This issue can be reproduced in 3.2.0-133 in proposed and 3.2.0-131.
So it should not be considered as a regression.
We didn't spot this issue before, until I'm testing 3.2 kernel on one
of the laptop (CID 201307-13930) in Cert lab instead of using our
regular regression-testing test pool from kernel team this cycle.
==
FAIL: test_022_aslr_hardy_vdso (__main__.KernelSecurityTest)
ASLR of vdso
--
Traceback (most recent call last):
File "./test-kernel-security.py", line 1863, in test_022_aslr_hardy_vdso
self._test_aslr('vdso', expected)
File "./test-kernel-security.py", line 1795, in _test_aslr
self._test_aslr_all(area, expected, "unlimited stack %s" % area)
File "./test-kernel-security.py", line 1772, in _test_aslr_all
self._test_aslr_exec(area, expected, target, name)
File "./test-kernel-security.py", line 1765, in _test_aslr_exec
self.assertShellExitEquals(aslr_expected, ["./%s" % (target), area,
"--verbose"], msg="%s:\n" % name)
File
"/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/testlib.py",
line 1134, in assertShellExitEquals
self.assertEqual(expected, rc, msg + result + report)
AssertionError: unlimited stack vdso native:
Got exit code 1, expected 0
Command: './aslr', 'vdso', '--verbose'
Output:
Checking ASLR of vdso:
0x40022000
0x40022000
0x40022000
FAIL: ASLR not functional (vdso always at 0x40022000)
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[Kernel-packages] [Bug 1747630] Re: Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
This issue can be reproduced on that specific system here.
3.2.0-135 on Precise.
** Changed in: ubuntu-kernel-tests
Status: Incomplete => Confirmed
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1747630
Title:
Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
Status in ubuntu-kernel-tests:
Confirmed
Status in linux package in Ubuntu:
Confirmed
Bug description:
This issue can be reproduced in 3.2.0-133 in proposed and 3.2.0-131.
So it should not be considered as a regression.
We didn't spot this issue before, until I'm testing 3.2 kernel on one
of the laptop (CID 201307-13930) in Cert lab instead of using our
regular regression-testing test pool from kernel team this cycle.
==
FAIL: test_022_aslr_hardy_vdso (__main__.KernelSecurityTest)
ASLR of vdso
--
Traceback (most recent call last):
File "./test-kernel-security.py", line 1863, in test_022_aslr_hardy_vdso
self._test_aslr('vdso', expected)
File "./test-kernel-security.py", line 1795, in _test_aslr
self._test_aslr_all(area, expected, "unlimited stack %s" % area)
File "./test-kernel-security.py", line 1772, in _test_aslr_all
self._test_aslr_exec(area, expected, target, name)
File "./test-kernel-security.py", line 1765, in _test_aslr_exec
self.assertShellExitEquals(aslr_expected, ["./%s" % (target), area,
"--verbose"], msg="%s:\n" % name)
File
"/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/testlib.py",
line 1134, in assertShellExitEquals
self.assertEqual(expected, rc, msg + result + report)
AssertionError: unlimited stack vdso native:
Got exit code 1, expected 0
Command: './aslr', 'vdso', '--verbose'
Output:
Checking ASLR of vdso:
0x40022000
0x40022000
0x40022000
FAIL: ASLR not functional (vdso always at 0x40022000)
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[Kernel-packages] [Bug 1747630] Re: Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
very old bug, with no action on it, marking bug as incomplete and will
close in 5 days if no update.
** Changed in: ubuntu-kernel-tests
Status: New => Incomplete
** Changed in: linux (Ubuntu)
Status: Triaged => Incomplete
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Title:
Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
Status in ubuntu-kernel-tests:
Incomplete
Status in linux package in Ubuntu:
Incomplete
Bug description:
This issue can be reproduced in 3.2.0-133 in proposed and 3.2.0-131.
So it should not be considered as a regression.
We didn't spot this issue before, until I'm testing 3.2 kernel on one
of the laptop (CID 201307-13930) in Cert lab instead of using our
regular regression-testing test pool from kernel team this cycle.
==
FAIL: test_022_aslr_hardy_vdso (__main__.KernelSecurityTest)
ASLR of vdso
--
Traceback (most recent call last):
File "./test-kernel-security.py", line 1863, in test_022_aslr_hardy_vdso
self._test_aslr('vdso', expected)
File "./test-kernel-security.py", line 1795, in _test_aslr
self._test_aslr_all(area, expected, "unlimited stack %s" % area)
File "./test-kernel-security.py", line 1772, in _test_aslr_all
self._test_aslr_exec(area, expected, target, name)
File "./test-kernel-security.py", line 1765, in _test_aslr_exec
self.assertShellExitEquals(aslr_expected, ["./%s" % (target), area,
"--verbose"], msg="%s:\n" % name)
File
"/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/testlib.py",
line 1134, in assertShellExitEquals
self.assertEqual(expected, rc, msg + result + report)
AssertionError: unlimited stack vdso native:
Got exit code 1, expected 0
Command: './aslr', 'vdso', '--verbose'
Output:
Checking ASLR of vdso:
0x40022000
0x40022000
0x40022000
FAIL: ASLR not functional (vdso always at 0x40022000)
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[Kernel-packages] [Bug 1747630] Re: Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
** Also affects: ubuntu-kernel-tests
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1747630
Title:
Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
Status in ubuntu-kernel-tests:
New
Status in linux package in Ubuntu:
Triaged
Bug description:
This issue can be reproduced in 3.2.0-133 in proposed and 3.2.0-131.
So it should not be considered as a regression.
We didn't spot this issue before, until I'm testing 3.2 kernel on one
of the laptop (CID 201307-13930) in Cert lab instead of using our
regular regression-testing test pool from kernel team this cycle.
==
FAIL: test_022_aslr_hardy_vdso (__main__.KernelSecurityTest)
ASLR of vdso
--
Traceback (most recent call last):
File "./test-kernel-security.py", line 1863, in test_022_aslr_hardy_vdso
self._test_aslr('vdso', expected)
File "./test-kernel-security.py", line 1795, in _test_aslr
self._test_aslr_all(area, expected, "unlimited stack %s" % area)
File "./test-kernel-security.py", line 1772, in _test_aslr_all
self._test_aslr_exec(area, expected, target, name)
File "./test-kernel-security.py", line 1765, in _test_aslr_exec
self.assertShellExitEquals(aslr_expected, ["./%s" % (target), area,
"--verbose"], msg="%s:\n" % name)
File
"/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/testlib.py",
line 1134, in assertShellExitEquals
self.assertEqual(expected, rc, msg + result + report)
AssertionError: unlimited stack vdso native:
Got exit code 1, expected 0
Command: './aslr', 'vdso', '--verbose'
Output:
Checking ASLR of vdso:
0x40022000
0x40022000
0x40022000
FAIL: ASLR not functional (vdso always at 0x40022000)
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[Kernel-packages] [Bug 1747630] Re: Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: Incomplete => Triaged
** Tags added: kernel-da-key
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1747630
Title:
Kernel security test test_022_aslr_hardy_vdso failed on Precise i386
Status in linux package in Ubuntu:
Triaged
Bug description:
This issue can be reproduced in 3.2.0-133 in proposed and 3.2.0-131.
So it should not be considered as a regression.
We didn't spot this issue before, until I'm testing 3.2 kernel on one
of the laptop (CID 201307-13930) in Cert lab instead of using our
regular regression-testing test pool from kernel team this cycle.
==
FAIL: test_022_aslr_hardy_vdso (__main__.KernelSecurityTest)
ASLR of vdso
--
Traceback (most recent call last):
File "./test-kernel-security.py", line 1863, in test_022_aslr_hardy_vdso
self._test_aslr('vdso', expected)
File "./test-kernel-security.py", line 1795, in _test_aslr
self._test_aslr_all(area, expected, "unlimited stack %s" % area)
File "./test-kernel-security.py", line 1772, in _test_aslr_all
self._test_aslr_exec(area, expected, target, name)
File "./test-kernel-security.py", line 1765, in _test_aslr_exec
self.assertShellExitEquals(aslr_expected, ["./%s" % (target), area,
"--verbose"], msg="%s:\n" % name)
File
"/home/ubuntu/autotest/client/tmp/ubuntu_qrt_kernel_security/src/qa-regression-testing/scripts/testlib.py",
line 1134, in assertShellExitEquals
self.assertEqual(expected, rc, msg + result + report)
AssertionError: unlimited stack vdso native:
Got exit code 1, expected 0
Command: './aslr', 'vdso', '--verbose'
Output:
Checking ASLR of vdso:
0x40022000
0x40022000
0x40022000
FAIL: ASLR not functional (vdso always at 0x40022000)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1747630/+subscriptions
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