Comment 0 for bug 1836873

It looks like this is not a regression, at least it can be reproduced with 4.4.0-154-generic #181~14.04.1

 running exec_stack
 /tmp/testlibie9Zaq/source/trusty/apparmor-2.10.95/tests/regression/apparmor/prologue.inc: line 219: 11431 Segmentation fault $testexec "$@" > $outfile 2>&1
 Error: transition failed. Test 'EXEC_STACK (2 stacked - file)' was expected to 'fail'. Reason for failure expect errno 13 != 139
 /tmp/testlibie9Zaq/source/trusty/apparmor-2.10.95/tests/regression/apparmor/prologue.inc: line 219: 11433 Segmentation fault $testexec "$@" > $outfile 2>&1
 Error: transition failed. Test 'EXEC_STACK (2 stacked - otherfile)' was expected to 'fail'. Reason for failure expect errno 13 != 139
 /tmp/testlibie9Zaq/source/trusty/apparmor-2.10.95/tests/regression/apparmor/prologue.inc: line 219: 11435 Segmentation fault $testexec "$@" > $outfile 2>&1
 Error: transition failed. Test 'EXEC_STACK (2 stacked - thirdfile)' was expected to 'fail'. Reason for failure expect errno 13 != 139
 /tmp/testlibie9Zaq/source/trusty/apparmor-2.10.95/tests/regression/apparmor/prologue.inc: line 219: 11436 Segmentation fault $testexec "$@" > $outfile 2>&1
 Error: transition failed. Test 'EXEC_STACK (2 stacked - sharedfile)' was expected to 'pass'. Reason for failure 'killed by signal 11'
 /tmp/testlibie9Zaq/source/trusty/apparmor-2.10.95/tests/regression/apparmor/prologue.inc: line 219: 11442 Segmentation fault $testexec "$@" > $outfile 2>&1
 Error: transition failed. Test 'EXEC_STACK (2 stacked - okcon)' was expected to 'pass'. Reason for failure 'killed by signal 11'
 /tmp/testlibie9Zaq/source/trusty/apparmor-2.10.95/tests/regression/apparmor/prologue.inc: line 219: 11448 Segmentation fault $testexec "$@" > $outfile 2>&1
 Error: transition failed. Test 'EXEC_STACK (2 stacked - bad label)' was expected to 'fail'. Reason for failure 'killed by signal 11'
 /tmp/testlibie9Zaq/source/trusty/apparmor-2.10.95/tests/regression/apparmor/prologue.inc: line 219: 11454 Segmentation fault $testexec "$@" > $outfile 2>&1
 Error: transition failed. Test 'EXEC_STACK (2 stacked - bad mode)' was expected to 'fail'. Reason for failure 'killed by signal 11'
 /tmp/testlibie9Zaq/source/trusty/apparmor-2.10.95/tests/regression/apparmor/prologue.inc: line 219: 11549 Segmentation fault $testexec "$@" > $outfile 2>&1
 Error: transition failed. Test 'EXEC_STACK (3 stacked - file)' was expected to 'fail'. Reason for failure expect errno 13 != 139
 /tmp/testlibie9Zaq/source/trusty/apparmor-2.10.95/tests/regression/apparmor/prologue.inc: line 219: 11551 Segmentation fault $testexec "$@" > $outfile 2>&1
 Error: transition failed. Test 'EXEC_STACK (3 stacked - otherfile)' was expected to 'fail'. Reason for failure expect errno 13 != 139
 /tmp/testlibie9Zaq/source/trusty/apparmor-2.10.95/tests/regression/apparmor/prologue.inc: line 219: 11553 Segmentation fault $testexec "$@" > $outfile 2>&1
 Error: transition failed. Test 'EXEC_STACK (3 stacked - thirdfile)' was expected to 'fail'. Reason for failure expect errno 13 != 139
 /tmp/testlibie9Zaq/source/trusty/apparmor-2.10.95/tests/regression/apparmor/prologue.inc: line 219: 11554 Segmentation fault $testexec "$@" > $outfile 2>&1
 Error: transition failed. Test 'EXEC_STACK (3 stacked - sharedfile)' was expected to 'pass'. Reason for failure 'killed by signal 11'
 /tmp/testlibie9Zaq/source/trusty/apparmor-2.10.95/tests/regression/apparmor/prologue.inc: line 219: 11560 Segmentation fault $testexec "$@" > $outfile 2>&1
 Error: transition failed. Test 'EXEC_STACK (3 stacked - okcon)' was expected to 'pass'. Reason for failure 'killed by signal 11'
 /tmp/testlibie9Zaq/source/trusty/apparmor-2.10.95/tests/regression/apparmor/prologue.inc: line 219: 11652 Segmentation fault $testexec "$@" > $outfile 2>&1
 Error: transition failed. Test 'EXEC_STACK (3 stacked - old AA WARN)' was expected to 'pass'. Reason for failure 'killed by signal 11'