[libvirt] [PATCH 1/7] util: purge all code for testing OOM handling

Daniel P. Berrangé berrange at redhat.com
Thu Aug 29 18:02:44 UTC 2019


The OOM handling requires special build time options which we never
enable in our CI. Even once enabled the tests are incredibly slow and
typically require manual inspection of the results to weed out false
positives.

Since there was previous agreement to switch to abort on OOM in libvirt
code, there's no point continuing to keep the unused OOM testing code.

Signed-off-by: Daniel P. Berrangé <berrange at redhat.com>
---
 configure.ac                      |  17 ---
 docs/docs.html.in                 |   3 -
 docs/internals/oomtesting.html.in | 213 ------------------------------
 src/libvirt_private.syms          |   4 -
 src/util/viralloc.c               | 111 ----------------
 src/util/viralloc.h               |   5 -
 tests/Makefile.am                 |   1 -
 tests/oomtrace.pl                 |  41 ------
 tests/qemuxml2argvtest.c          |  12 +-
 tests/testutils.c                 | 189 +-------------------------
 tests/testutils.h                 |   2 -
 tests/virfirewalltest.c           |  12 --
 12 files changed, 6 insertions(+), 604 deletions(-)
 delete mode 100644 docs/internals/oomtesting.html.in
 delete mode 100755 tests/oomtrace.pl

diff --git a/configure.ac b/configure.ac
index 7c76a9c9ec..36e75ac3c0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -766,22 +766,6 @@ if test "$enable_test_coverage" = yes; then
   WARN_CFLAGS=$save_WARN_CFLAGS
 fi
 
-LIBVIRT_ARG_ENABLE([TEST_OOM], [memory allocation failure checking], [no])
-case "$enable_test_oom" in
-  yes|no) ;;
-  *) AC_MSG_ERROR([bad value ${enable_test_oom} for test-oom option]) ;;
-esac
-
-if test "$enable_test_oom" = yes; then
-  have_trace=yes
-  AC_CHECK_HEADER([execinfo.h],[],[have_trace=no])
-  AC_CHECK_FUNC([backtrace],[],[have_trace=no])
-  if test "$have_trace" = "yes"; then
-    AC_DEFINE([TEST_OOM_TRACE], 1, [Whether backtrace() is available])
-  fi
-  AC_DEFINE([TEST_OOM], 1, [Whether malloc OOM checking is enabled])
-fi
-
 LIBVIRT_ARG_ENABLE([TEST_LOCKING], [thread locking tests using CIL], [no])
 case "$enable_test_locking" in
   yes|no) ;;
@@ -1052,7 +1036,6 @@ AC_MSG_NOTICE([])
 AC_MSG_NOTICE([Test suite])
 AC_MSG_NOTICE([])
 AC_MSG_NOTICE([         Coverage: $enable_test_coverage])
-AC_MSG_NOTICE([        Alloc OOM: $enable_test_oom])
 AC_MSG_NOTICE([])
 AC_MSG_NOTICE([Miscellaneous])
 AC_MSG_NOTICE([])
diff --git a/docs/docs.html.in b/docs/docs.html.in
index ba9514279a..c1741c89b4 100644
--- a/docs/docs.html.in
+++ b/docs/docs.html.in
@@ -155,9 +155,6 @@
         <dt><a href="internals/locking.html">Lock managers</a></dt>
         <dd>Use lock managers to protect disk content</dd>
 
-        <dt><a href="internals/oomtesting.html">Out of memory testing</a></dt>
-        <dd>Simulating OOM conditions in the test suite</dd>
-
         <dt><a href="testsuites.html">Functional testing</a></dt>
         <dd>Testing libvirt with <a href="testtck.html">TCK test suite</a> and
          <a href="testapi.html">Libvirt-test-API</a></dd>
diff --git a/docs/internals/oomtesting.html.in b/docs/internals/oomtesting.html.in
deleted file mode 100644
index 72d0f2c6ff..0000000000
--- a/docs/internals/oomtesting.html.in
+++ /dev/null
@@ -1,213 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE html>
-<html xmlns="http://www.w3.org/1999/xhtml">
-  <body>
-    <h1>Out of memory testing</h1>
-
-    <ul id="toc"></ul>
-
-
-    <p>
-      This page describes how to use the test suite todo out of memory
-      testing.
-    </p>
-
-    <h2>Building with OOM testing</h2>
-
-    <p>
-      Since OOM testing requires hooking into the malloc APIs, it is
-      not enabled by default. The flag <code>--enable-test-oom</code>
-      must be given to <code>configure</code>. When this is done the
-      libvirt allocation APIs will have some hooks enabled.
-    </p>
-
-    <pre>
-$ ./configure --enable-test-oom
-</pre>
-
-
-    <h2><a id="basicoom">Basic OOM testing support</a></h2>
-
-    <p>
-      The first step in validating OOM usage is to run a test suite
-      with full OOM testing enabled. This is done by setting the
-      <code>VIR_TEST_OOM=1</code> environment variable. The way this
-      works is that it runs the test once normally to "prime" any
-      static memory allocations. Then it runs it once more counting
-      the total number of memory allocations. Then it runs it in a
-      loop failing a different memory allocation each time. For every
-      memory allocation failure triggered, it expects the test case
-      to return an error. OOM testing is quite slow requiring each
-      test case to be executed O(n) times, where 'n' is the total
-      number of memory allocations. This results in a total number
-      of memory allocations of '(n * (n + 1) ) / 2'
-    </p>
-
-    <pre>
-$ VIR_TEST_OOM=1 ./qemuxml2argvtest
- 1) QEMU XML-2-ARGV minimal                                           ... OK
-    Test OOM for nalloc=42 .......................................... OK
- 2) QEMU XML-2-ARGV minimal-s390                                      ... OK
-    Test OOM for nalloc=28 ............................ OK
- 3) QEMU XML-2-ARGV machine-aliases1                                  ... OK
-    Test OOM for nalloc=38 ...................................... OK
- 4) QEMU XML-2-ARGV machine-aliases2                                  ... OK
-    Test OOM for nalloc=38 ...................................... OK
- 5) QEMU XML-2-ARGV machine-core-on                                   ... OK
-    Test OOM for nalloc=37 ..................................... OK
-...snip...
-</pre>
-
-    <p>
-      In this output, the first line shows the normal execution and
-      the test number, and the second line shows the total number
-      of memory allocations from that test case.
-    </p>
-
-    <h3><a id="valgrind">Tracking failures with valgrind</a></h3>
-
-    <p>
-      The test suite should obviously *not* crash during OOM testing.
-      If it does crash, then to assist in tracking down the problem
-      it is worth using valgrind and only running a single test case.
-      For example, supposing test case 5 crashed. Then re-run the
-      test with
-    </p>
-
-    <pre>
-$ VIR_TEST_OOM=1 VIR_TEST_RANGE=5 ../run valgrind ./qemuxml2argvtest
-...snip...
- 5) QEMU XML-2-ARGV machine-core-on                                   ... OK
-    Test OOM for nalloc=37 ..................................... OK
-...snip...
-    </pre>
-
-    <p>
-      Valgrind should report the cause of the crash - for example a
-      double free or use of uninitialized memory or NULL pointer
-      access.
-    </p>
-
-    <h3><a id="stacktraces">Tracking failures with stack traces</a></h3>
-
-    <p>
-      With some really difficult bugs valgrind is not sufficient to
-      identify the cause. In this case, it is useful to identify the
-      precise allocation which was failed, to allow the code path
-      to the error to be traced. The <code>VIR_TEST_OOM</code>
-      env variable can be given a range of memory allocations to
-      test. So if a test case has 150 allocations, it can be told
-      to only test allocation numbers 7-10. The <code>VIR_TEST_OOM_TRACE</code>
-      variable can be used to print out stack traces.
-    </p>
-
-    <pre>
-$ VIR_TEST_OOM_TRACE=2 VIR_TEST_OOM=1:7-10 VIR_TEST_RANGE=5 \
-    ../run valgrind ./qemuxml2argvtest
- 5) QEMU XML-2-ARGV machine-core-on                                   ... OK
-    Test OOM for nalloc=37 !virAllocN
-/home/berrange/src/virt/libvirt/src/util/viralloc.c:180
-virDomainDefParseXML
-/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:11786 (discriminator 1)
-virDomainDefParseNode
-/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:12677
-virDomainDefParse
-/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:12621
-testCompareXMLToArgvFiles
-/home/berrange/src/virt/libvirt/tests/qemuxml2argvtest.c:107
-virtTestRun
-/home/berrange/src/virt/libvirt/tests/testutils.c:266
-mymain
-/home/berrange/src/virt/libvirt/tests/qemuxml2argvtest.c:388 (discriminator 2)
-virtTestMain
-/home/berrange/src/virt/libvirt/tests/testutils.c:791
-__libc_start_main
-??:?
-_start
-??:?
-!virAlloc
-/home/berrange/src/virt/libvirt/src/util/viralloc.c:133
-virDomainDiskDefParseXML
-/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:4790
-virDomainDefParseXML
-/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:11797
-virDomainDefParseNode
-/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:12677
-virDomainDefParse
-/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:12621
-testCompareXMLToArgvFiles
-/home/berrange/src/virt/libvirt/tests/qemuxml2argvtest.c:107
-virtTestRun
-/home/berrange/src/virt/libvirt/tests/testutils.c:266
-mymain
-/home/berrange/src/virt/libvirt/tests/qemuxml2argvtest.c:388 (discriminator 2)
-virtTestMain
-/home/berrange/src/virt/libvirt/tests/testutils.c:791
-__libc_start_main
-??:?
-_start
-??:?
-!virAllocN
-/home/berrange/src/virt/libvirt/src/util/viralloc.c:180
-virXPathNodeSet
-/home/berrange/src/virt/libvirt/src/util/virxml.c:609
-virDomainDefParseXML
-/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:11805
-virDomainDefParseNode
-/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:12677
-virDomainDefParse
-/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:12621
-testCompareXMLToArgvFiles
-/home/berrange/src/virt/libvirt/tests/qemuxml2argvtest.c:107
-virtTestRun
-/home/berrange/src/virt/libvirt/tests/testutils.c:266
-mymain
-/home/berrange/src/virt/libvirt/tests/qemuxml2argvtest.c:388 (discriminator 2)
-virtTestMain
-/home/berrange/src/virt/libvirt/tests/testutils.c:791
-__libc_start_main
-??:?
-_start
-??:?
-!virAllocN
-/home/berrange/src/virt/libvirt/src/util/viralloc.c:180
-virDomainDefParseXML
-/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:11808 (discriminator 1)
-virDomainDefParseNode
-/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:12677
-virDomainDefParse
-/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:12621
-testCompareXMLToArgvFiles
-/home/berrange/src/virt/libvirt/tests/qemuxml2argvtest.c:107
-virtTestRun
-/home/berrange/src/virt/libvirt/tests/testutils.c:266
-mymain
-/home/berrange/src/virt/libvirt/tests/qemuxml2argvtest.c:388 (discriminator 2)
-virtTestMain
-/home/berrange/src/virt/libvirt/tests/testutils.c:791
-__libc_start_main
-??:?
-_start
-??:?
-    </pre>
-
-    <h3><a id="noncrash">Non-crash related problems</a></h3>
-
-    <p>
-      Not all memory allocation bugs result in code crashing. Sometimes
-      the code will be silently ignoring the allocation failure, resulting
-      in incorrect data being produced. For example the XML parser may
-      mistakenly treat an allocation failure as indicating that an XML
-      attribute was not set in the input document. It is hard to identify
-      these problems from the test suite automatically. For this, the
-      test suites should be run with <code>VIR_TEST_DEBUG=1</code> set
-      and then stderr analysed for any unexpected data. For example,
-      the XML conversion may show an embedded "(null)" literal, or the
-      test suite might complain about missing elements / attributes
-      in the actual vs expected data. These are all signs of bugs in
-      OOM handling. In the future the OOM tests will be enhanced to
-      validate that an error VIR_ERR_NO_MEMORY is returned for each
-      allocation failed, rather than some other error.
-    </p>
-  </body>
-</html>
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index a34d92f5ef..cd9e29cac1 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -1483,10 +1483,6 @@ virSecurityManagerVerify;
 # util/viralloc.h
 virAlloc;
 virAllocN;
-virAllocTestCount;
-virAllocTestHook;
-virAllocTestInit;
-virAllocTestOOM;
 virAllocVar;
 virDeleteElementsN;
 virDispose;
diff --git a/src/util/viralloc.c b/src/util/viralloc.c
index e82bfa0acd..5a0adcc706 100644
--- a/src/util/viralloc.c
+++ b/src/util/viralloc.c
@@ -30,80 +30,6 @@
 
 VIR_LOG_INIT("util.alloc");
 
-#if TEST_OOM
-static int testMallocNext;
-static int testMallocFailFirst;
-static int testMallocFailLast;
-static void (*testMallocHook)(int, void*);
-static void *testMallocHookData;
-
-void virAllocTestInit(void)
-{
-    testMallocNext = 1;
-    testMallocFailFirst = 0;
-    testMallocFailLast = 0;
-}
-
-int virAllocTestCount(void)
-{
-    return testMallocNext - 1;
-}
-
-void virAllocTestHook(void (*func)(int, void*), void *data)
-{
-    testMallocHook = func;
-    testMallocHookData = data;
-}
-
-void virAllocTestOOM(int n, int m)
-{
-    testMallocNext = 1;
-    testMallocFailFirst = n;
-    testMallocFailLast = n + m - 1;
-}
-
-static int virAllocTestFail(void)
-{
-    int fail = 0;
-    if (testMallocNext == 0)
-        return 0;
-
-    fail =
-        testMallocNext >= testMallocFailFirst &&
-        testMallocNext <= testMallocFailLast;
-
-    if (fail && testMallocHook)
-        (testMallocHook)(testMallocNext, testMallocHookData);
-
-    testMallocNext++;
-    return fail;
-}
-
-#else
-
-void virAllocTestOOM(int n ATTRIBUTE_UNUSED,
-                     int m ATTRIBUTE_UNUSED)
-{
-    /* nada */
-}
-
-int virAllocTestCount(void)
-{
-    return 0;
-}
-
-void virAllocTestInit(void)
-{
-    /* nada */
-}
-
-void virAllocTestHook(void (*func)(int, void*) ATTRIBUTE_UNUSED,
-                      void *data ATTRIBUTE_UNUSED)
-{
-    /* nada */
-}
-#endif
-
 
 /**
  * virAlloc:
@@ -130,16 +56,6 @@ int virAlloc(void *ptrptr,
              const char *funcname,
              size_t linenr)
 {
-#if TEST_OOM
-    if (virAllocTestFail()) {
-        *(void **)ptrptr = NULL;
-        if (report)
-            virReportOOMErrorFull(domcode, filename, funcname, linenr);
-        errno = ENOMEM;
-        return -1;
-    }
-#endif
-
     *(void **)ptrptr = calloc(1, size);
     if (*(void **)ptrptr == NULL) {
         if (report)
@@ -177,16 +93,6 @@ int virAllocN(void *ptrptr,
               const char *funcname,
               size_t linenr)
 {
-#if TEST_OOM
-    if (virAllocTestFail()) {
-        *(void **)ptrptr = NULL;
-        if (report)
-            virReportOOMErrorFull(domcode, filename, funcname, linenr);
-        errno = ENOMEM;
-        return -1;
-    }
-#endif
-
     *(void**)ptrptr = calloc(count, size);
     if (*(void**)ptrptr == NULL) {
         if (report)
@@ -226,14 +132,6 @@ int virReallocN(void *ptrptr,
                 size_t linenr)
 {
     void *tmp;
-#if TEST_OOM
-    if (virAllocTestFail()) {
-        if (report)
-            virReportOOMErrorFull(domcode, filename, funcname, linenr);
-        errno = ENOMEM;
-        return -1;
-    }
-#endif
 
     if (xalloc_oversized(count, size)) {
         if (report)
@@ -539,15 +437,6 @@ int virAllocVar(void *ptrptr,
 {
     size_t alloc_size = 0;
 
-#if TEST_OOM
-    if (virAllocTestFail()) {
-        if (report)
-            virReportOOMErrorFull(domcode, filename, funcname, linenr);
-        errno = ENOMEM;
-        return -1;
-    }
-#endif
-
     if (VIR_ALLOC_VAR_OVERSIZED(struct_size, count, element_size)) {
         if (report)
             virReportOOMErrorFull(domcode, filename, funcname, linenr);
diff --git a/src/util/viralloc.h b/src/util/viralloc.h
index 2b82096fde..3e169e272c 100644
--- a/src/util/viralloc.h
+++ b/src/util/viralloc.h
@@ -600,11 +600,6 @@ void virDisposeString(char **strptr)
                                     sizeof(*(ptr)), NULL)
 
 
-void virAllocTestInit(void);
-int virAllocTestCount(void);
-void virAllocTestOOM(int n, int m);
-void virAllocTestHook(void (*func)(int, void*), void *data);
-
 /**
  * VIR_AUTOFREE:
  * @type: type of the variable to be freed automatically
diff --git a/tests/Makefile.am b/tests/Makefile.am
index f92710db43..a319e386ec 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -109,7 +109,6 @@ EXTRA_DIST = \
 	nwfilterxml2firewalldata \
 	nwfilterxml2xmlin \
 	nwfilterxml2xmlout \
-	oomtrace.pl \
 	qemuagentdata \
 	qemublocktestdata \
 	qemucapabilitiesdata \
diff --git a/tests/oomtrace.pl b/tests/oomtrace.pl
deleted file mode 100755
index f799262f2c..0000000000
--- a/tests/oomtrace.pl
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/usr/bin/env perl
-
-use strict;
-use warnings;
-
-(my $ME = $0) =~ s|.*/||;
-# use File::Coda; # http://meyering.net/code/Coda/
-END {
-  defined fileno STDOUT or return;
-  close STDOUT and return;
-  warn "$ME: failed to close standard output: $!\n";
-  $? ||= 1;
-}
-
-
-my @data = <>;
-
-
-my %trace;
-my %lines;
-
-foreach (@data) {
-    if (/^\s*TRACE:\s+(\S+?)(?:\(.*\))?\s+\[0x(.*)\]\s*$/ ) {
-        $trace{$2} = $1;
-    }
-}
-
-foreach my $key (keys %trace) {
-    my $val = $trace{$key};
-    my $info = $val =~ /\?\?/ ? $val : `addr2line -e $val $key`;
-    $lines{$key} = $info;
-}
-
-
-foreach (@data) {
-    if (/^\s*TRACE:\s+(\S+?)(?:\(.*\))?\s+\[0x(.*)\]\s*$/ ) {
-        print $lines{$2};
-    } else {
-        print;
-    }
-}
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 9395cc19a2..ac54f088e0 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -552,14 +552,12 @@ testCompareXMLToArgv(const void *data)
         VIR_TEST_DEBUG("Error expected but there wasn't any.");
         goto cleanup;
     }
-    if (!virTestOOMActive()) {
-        if (flags & FLAG_EXPECT_FAILURE) {
-            if ((log = virTestLogContentAndReset()))
-                VIR_TEST_DEBUG("Got expected error: \n%s", log);
-        }
-        virResetLastError();
-        ret = 0;
+    if (flags & FLAG_EXPECT_FAILURE) {
+        if ((log = virTestLogContentAndReset()))
+            VIR_TEST_DEBUG("Got expected error: \n%s", log);
     }
+    virResetLastError();
+    ret = 0;
 
  cleanup:
     VIR_FREE(log);
diff --git a/tests/testutils.c b/tests/testutils.c
index 8b2c51044e..b4009f0a48 100644
--- a/tests/testutils.c
+++ b/tests/testutils.c
@@ -42,13 +42,6 @@
 #include "virprocess.h"
 #include "virstring.h"
 
-#ifdef TEST_OOM
-# ifdef TEST_OOM_TRACE
-#  include <dlfcn.h>
-#  include <execinfo.h>
-# endif
-#endif
-
 #define VIR_FROM_THIS VIR_FROM_NONE
 
 VIR_LOG_INIT("tests.testutils");
@@ -61,17 +54,6 @@ static unsigned int testVerbose = -1;
 static unsigned int testExpensive = -1;
 static unsigned int testRegenerate = -1;
 
-#ifdef TEST_OOM
-static unsigned int testOOM;
-static unsigned int testOOMStart = -1;
-static unsigned int testOOMEnd = -1;
-static unsigned int testOOMTrace;
-# ifdef TEST_OOM_TRACE
-void *testAllocStack[30];
-int ntestAllocStack;
-# endif
-#endif
-static bool testOOMActive;
 
 static size_t testCounter;
 static virBitmapPtr testBitmap;
@@ -79,11 +61,6 @@ static virBitmapPtr testBitmap;
 char *progname;
 static char *perl;
 
-bool virTestOOMActive(void)
-{
-    return testOOMActive;
-}
-
 static int virTestUseTerminalColors(void)
 {
     return isatty(STDOUT_FILENO);
@@ -104,42 +81,6 @@ virTestGetFlag(const char *name)
     return flag;
 }
 
-#ifdef TEST_OOM_TRACE
-static void virTestAllocHook(int nalloc ATTRIBUTE_UNUSED,
-                             void *opaque ATTRIBUTE_UNUSED)
-{
-    ntestAllocStack = backtrace(testAllocStack, ARRAY_CARDINALITY(testAllocStack));
-}
-#endif
-
-#ifdef TEST_OOM_TRACE
-static void
-virTestShowTrace(void)
-{
-    size_t j;
-    for (j = 2; j < ntestAllocStack; j++) {
-        Dl_info info;
-        char *cmd;
-
-        dladdr(testAllocStack[j], &info);
-        if (info.dli_fname &&
-            strstr(info.dli_fname, ".so")) {
-            if (virAsprintf(&cmd, ADDR2LINE " -f -e %s %p",
-                            info.dli_fname,
-                            ((void*)((unsigned long long)testAllocStack[j]
-                                     - (unsigned long long)info.dli_fbase))) < 0)
-                continue;
-        } else {
-            if (virAsprintf(&cmd, ADDR2LINE " -f -e %s %p",
-                            (char*)(info.dli_fname ? info.dli_fname : "<unknown>"),
-                            testAllocStack[j]) < 0)
-                continue;
-        }
-        ignore_value(system(cmd));
-        VIR_FREE(cmd);
-    }
-}
-#endif
 
 /*
  * Runs test
@@ -207,76 +148,6 @@ virTestRun(const char *title,
             fprintf(stderr, "!");
     }
 
-#ifdef TEST_OOM
-    if (testOOM && ret != EXIT_AM_SKIP) {
-        int nalloc;
-        int oomret;
-        int start, end;
-        size_t i;
-        virResetLastError();
-        virAllocTestInit();
-# ifdef TEST_OOM_TRACE
-        virAllocTestHook(virTestAllocHook, NULL);
-# endif
-        oomret = body(data);
-        nalloc = virAllocTestCount();
-        fprintf(stderr, "    Test OOM for nalloc=%d ", nalloc);
-        if (testOOMStart == -1 ||
-            testOOMEnd == -1) {
-            start = 0;
-            end = nalloc;
-        } else {
-            start = testOOMStart;
-            end = testOOMEnd + 1;
-        }
-        testOOMActive = true;
-        for (i = start; i < end; i++) {
-            bool missingFail = false;
-# ifdef TEST_OOM_TRACE
-            memset(testAllocStack, 0, sizeof(testAllocStack));
-            ntestAllocStack = 0;
-# endif
-            virAllocTestOOM(i + 1, 1);
-            oomret = body(data);
-
-            /* fprintf() disabled because XML parsing APIs don't allow
-             * distinguish between element / attribute not present
-             * in the XML (which is non-fatal), vs OOM / malformed
-             * which should be fatal. Thus error reporting for
-             * optionally present XML is mostly broken.
-             */
-            if (oomret == 0) {
-                missingFail = true;
-# if 0
-                fprintf(stderr, " alloc %zu failed but no err status\n", i + 1);
-# endif
-            } else {
-                if (virGetLastErrorCode() == VIR_ERR_OK) {
-# if 0
-                    fprintf(stderr, " alloc %zu failed but no error report\n", i + 1);
-# endif
-                    missingFail = true;
-                }
-            }
-            if ((missingFail && testOOMTrace) || (testOOMTrace > 1)) {
-                fprintf(stderr, "%s", "!");
-# ifdef TEST_OOM_TRACE
-                virTestShowTrace();
-# endif
-                ret = -1;
-            } else {
-                fprintf(stderr, "%s", ".");
-            }
-        }
-        testOOMActive = false;
-        if (ret == 0)
-            fprintf(stderr, " OK\n");
-        else
-            fprintf(stderr, " FAILED\n");
-        virAllocTestInit();
-    }
-#endif /* TEST_OOM */
-
     unsetenv("VIR_TEST_MOCK_TESTNAME");
     return ret;
 }
@@ -876,8 +747,7 @@ virtTestLogOutput(virLogSourcePtr source ATTRIBUTE_UNUSED,
 {
     struct virtTestLogData *log = data;
     virCheckFlags(VIR_LOG_STACK_TRACE,);
-    if (!testOOMActive)
-        virBufferAsprintf(&log->buf, "%s: %s", timestamp, str);
+    virBufferAsprintf(&log->buf, "%s: %s", timestamp, str);
 }
 
 static void
@@ -971,9 +841,6 @@ int virTestMain(int argc,
     va_list ap;
     int ret;
     char *testRange = NULL;
-#ifdef TEST_OOM
-    char *oomstr;
-#endif
     size_t noutputs = 0;
     virLogOutputPtr output = NULL;
     virLogOutputPtr *outputs = NULL;
@@ -1034,60 +901,6 @@ int virTestMain(int argc,
         }
     }
 
-#ifdef TEST_OOM
-    if ((oomstr = getenv("VIR_TEST_OOM")) != NULL) {
-        char *next;
-        if (testDebug == -1)
-            testDebug = 1;
-        testOOM = 1;
-        if (oomstr[0] != '\0' &&
-            oomstr[1] == ':') {
-            if (virStrToLong_ui(oomstr + 2, &next, 10, &testOOMStart) < 0) {
-                fprintf(stderr, "Cannot parse range %s\n", oomstr);
-                return EXIT_FAILURE;
-            }
-            if (*next == '\0') {
-                testOOMEnd = testOOMStart;
-            } else {
-                if (*next != '-') {
-                    fprintf(stderr, "Cannot parse range %s\n", oomstr);
-                    return EXIT_FAILURE;
-                }
-                if (virStrToLong_ui(next+1, NULL, 10, &testOOMEnd) < 0) {
-                    fprintf(stderr, "Cannot parse range %s\n", oomstr);
-                    return EXIT_FAILURE;
-                }
-            }
-        } else {
-            testOOMStart = -1;
-            testOOMEnd = -1;
-        }
-    }
-
-# ifdef TEST_OOM_TRACE
-    if ((oomstr = getenv("VIR_TEST_OOM_TRACE")) != NULL) {
-        if (virStrToLong_ui(oomstr, NULL, 10, &testOOMTrace) < 0) {
-            fprintf(stderr, "Cannot parse oom trace %s\n", oomstr);
-            return EXIT_FAILURE;
-        }
-    }
-# else
-    if (getenv("VIR_TEST_OOM_TRACE")) {
-        fprintf(stderr, "%s", "OOM test tracing not enabled in this build\n");
-        return EXIT_FAILURE;
-    }
-# endif
-#else /* TEST_OOM */
-    if (getenv("VIR_TEST_OOM")) {
-        fprintf(stderr, "%s", "OOM testing not enabled in this build\n");
-        return EXIT_FAILURE;
-    }
-    if (getenv("VIR_TEST_OOM_TRACE")) {
-        fprintf(stderr, "%s", "OOM test tracing not enabled in this build\n");
-        return EXIT_FAILURE;
-    }
-#endif /* TEST_OOM */
-
     /* Find perl early because some tests override PATH */
     perl = virFindFileInPath("perl");
 
diff --git a/tests/testutils.h b/tests/testutils.h
index f273ca4240..85ba9fbc0b 100644
--- a/tests/testutils.h
+++ b/tests/testutils.h
@@ -43,8 +43,6 @@ extern char *progname;
 # error Fix Makefile.am
 #endif
 
-bool virTestOOMActive(void);
-
 int virTestRun(const char *title,
                int (*body)(const void *data),
                const void *data);
diff --git a/tests/virfirewalltest.c b/tests/virfirewalltest.c
index 78685a3bf4..7e4e80e09b 100644
--- a/tests/virfirewalltest.c
+++ b/tests/virfirewalltest.c
@@ -611,9 +611,6 @@ testFirewallNoRollback(const void *opaque ATTRIBUTE_UNUSED)
         goto cleanup;
     }
 
-    if (virTestOOMActive())
-        goto cleanup;
-
     if (virBufferError(&cmdbuf))
         goto cleanup;
 
@@ -701,9 +698,6 @@ testFirewallSingleRollback(const void *opaque ATTRIBUTE_UNUSED)
         goto cleanup;
     }
 
-    if (virTestOOMActive())
-        goto cleanup;
-
     if (virBufferError(&cmdbuf))
         goto cleanup;
 
@@ -794,9 +788,6 @@ testFirewallManyRollback(const void *opaque ATTRIBUTE_UNUSED)
         goto cleanup;
     }
 
-    if (virTestOOMActive())
-        goto cleanup;
-
     if (virBufferError(&cmdbuf))
         goto cleanup;
 
@@ -917,9 +908,6 @@ testFirewallChainedRollback(const void *opaque ATTRIBUTE_UNUSED)
         goto cleanup;
     }
 
-    if (virTestOOMActive())
-        goto cleanup;
-
     if (virBufferError(&cmdbuf))
         goto cleanup;
 
-- 
2.21.0




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