7:08 a.m.
Another six pathes to fix resource leak.
But this may not be the end.
Wang Rui (6):
tests: Resolve Coverity RESOURCE_LEAK in commandhelper
test_conf: Resolve Coverity RESOURCE_LEAK
remote: Resolve Coverity RESOURCE_LEAK
qemu_process: Resolve Coverity RESOURCE_LEAK
vircgroup: Resolve Coverity RESOURCE_LEAK
lxc_container: Resolve Coverity RESOURCE_LEAK
daemon/remote.c | 4 +++-
src/lxc/lxc_container.c | 4 ++++
src/qemu/qemu_process.c | 1 +
src/util/vircgroup.c | 2 +-
tests/commandhelper.c | 15 +++++++++------
tests/test_conf.c | 4 ++--
6 files changed, 20 insertions(+), 10 deletions(-)
--
1.7.12.4
7:08 a.m.
New subject: [libvirt] [PATCH 1/6] tests: Resolve Coverity RESOURCE_LEAK in commandhelper
Coverity determined that 'log' and 'newenv' were not freed in
some cases. Free them in 'error' branch and normal branch.
Signed-off-by: Wang Rui <moon.wangrui(a)huawei.com>
---
tests/commandhelper.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/tests/commandhelper.c b/tests/commandhelper.c
index 796b89d..0bba0d6 100644
--- a/tests/commandhelper.c
+++ b/tests/commandhelper.c
@@ -61,7 +61,7 @@ int main(int argc, char **argv) {
size_t i, n;
int open_max;
char **origenv;
- char **newenv;
+ char **newenv = NULL;
char *cwd;
FILE *log = fopen(abs_builddir "/commandhelper.log", "w");
@@ -80,7 +80,7 @@ int main(int argc, char **argv) {
}
if (VIR_ALLOC_N_QUIET(newenv, n) < 0)
- return EXIT_FAILURE;
+ goto error;
origenv = environ;
n = i = 0;
@@ -100,7 +100,7 @@ int main(int argc, char **argv) {
open_max = sysconf(_SC_OPEN_MAX);
if (open_max < 0)
- return EXIT_FAILURE;
+ goto error;
for (i = 0; i < open_max; i++) {
int f;
int closed;
@@ -114,15 +114,13 @@ int main(int argc, char **argv) {
fprintf(log, "DAEMON:%s\n", getpgrp() == getsid(0) ? "yes" :
"no");
if (!(cwd = getcwd(NULL, 0)))
- return EXIT_FAILURE;
+ goto error;
if (strlen(cwd) > strlen(".../commanddata") &&
STREQ(cwd + strlen(cwd) - strlen("/commanddata"),
"/commanddata"))
strcpy(cwd, ".../commanddata");
fprintf(log, "CWD:%s\n", cwd);
VIR_FREE(cwd);
- VIR_FORCE_FCLOSE(log);
-
if (argc > 1 && STREQ(argv[1], "--close-stdin")) {
if (freopen("/dev/null", "r", stdin) != stdin)
goto error;
@@ -154,9 +152,14 @@ int main(int argc, char **argv) {
fprintf(stderr, "END STDERR\n");
fflush(stderr);
+ VIR_FORCE_FCLOSE(log);
+ VIR_FREE(newenv);
+
return EXIT_SUCCESS;
error:
+ VIR_FORCE_FCLOSE(log);
+ VIR_FREE(newenv);
return EXIT_FAILURE;
}
--
1.7.12.4
7:08 a.m.
New subject: [libvirt] [PATCH 2/6] test_conf: Resolve Coverity RESOURCE_LEAK
If the condition 'ret < 0' is true, the code will jump to
'cleanup' and 'conf' won't be freed.
Signed-off-by: Wang Rui <moon.wangrui(a)huawei.com>
---
tests/test_conf.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tests/test_conf.c b/tests/test_conf.c
index 05704df..4d05d8d 100644
--- a/tests/test_conf.c
+++ b/tests/test_conf.c
@@ -11,7 +11,7 @@
int main(int argc, char **argv)
{
int ret, exit_code = EXIT_FAILURE;
- virConfPtr conf;
+ virConfPtr conf = NULL;
int len = 10000;
char *buffer = NULL;
@@ -34,7 +34,6 @@ int main(int argc, char **argv)
fprintf(stderr, "Failed to serialize %s back\n", argv[1]);
goto cleanup;
}
- virConfFree(conf);
if (fwrite(buffer, 1, len, stdout) != len) {
fprintf(stderr, "Write failed: %s\n", strerror(errno));
goto cleanup;
@@ -44,5 +43,6 @@ int main(int argc, char **argv)
cleanup:
VIR_FREE(buffer);
+ virConfFree(conf);
return exit_code;
}
--
1.7.12.4
7:08 a.m.
New subject: [libvirt] [PATCH 3/6] remote: Resolve Coverity RESOURCE_LEAK
Need to free 'uri_out' on error path.
Signed-off-by: Wang Rui <moon.wangrui(a)huawei.com>
---
daemon/remote.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/daemon/remote.c b/daemon/remote.c
index 89714ca..0ea2815 100644
--- a/daemon/remote.c
+++ b/daemon/remote.c
@@ -2305,8 +2305,10 @@ remoteDispatchDomainMigratePrepare2(virNetServerPtr server
ATTRIBUTE_UNUSED,
rv = 0;
cleanup:
- if (rv < 0)
+ if (rv < 0) {
virNetMessageSaveError(rerr);
+ VIR_FREE(uri_out);
+ }
return rv;
}
--
1.7.12.4
7:08 a.m.
New subject: [libvirt] [PATCH 4/6] qemu_process: Resolve Coverity RESOURCE_LEAK
If virSecurityManagerClearSocketLabel() fails, 'agent' won't
be freed before jumping to cleanup.
Signed-off-by: Wang Rui <moon.wangrui(a)huawei.com>
---
src/qemu/qemu_process.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index f68dfbe..79f4238 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -264,6 +264,7 @@ qemuConnectAgent(virQEMUDriverPtr driver, virDomainObjPtr vm)
vm->def) < 0) {
VIR_ERROR(_("Failed to clear security context for agent for %s"),
vm->def->name);
+ qemuAgentClose(agent);
goto cleanup;
}
--
1.7.12.4
7:08 a.m.
New subject: [libvirt] [PATCH 5/6] vircgroup: Resolve Coverity RESOURCE_LEAK
Need to free 'root' and 'opts' before 'return -1' if symlink
fails.
Signed-off-by: Wang Rui <moon.wangrui(a)huawei.com>
---
src/util/vircgroup.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
index 8b554a9..a64f081 100644
--- a/src/util/vircgroup.c
+++ b/src/util/vircgroup.c
@@ -3757,7 +3757,7 @@ virCgroupIsolateMount(virCgroupPtr group, const char *oldroot,
_("Unable to symlink directory %s to
%s"),
group->controllers[i].mountPoint,
group->controllers[i].linkPoint);
- return -1;
+ goto cleanup;
}
}
}
--
1.7.12.4
7:08 a.m.
New subject: [libvirt] [PATCH 6/6] lxc_container: Resolve Coverity RESOURCE_LEAK
Memory is allocated for 'mnt_src' by VIR_STRDUP in the loop. Next
loop it will be allocated again. So we need to free 'mnt_src'
before continue the loop.
Signed-off-by: Wang Rui <moon.wangrui(a)huawei.com>
---
src/lxc/lxc_container.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/lxc/lxc_container.c b/src/lxc/lxc_container.c
index 1cf2c8f..2a3ec48 100644
--- a/src/lxc/lxc_container.c
+++ b/src/lxc/lxc_container.c
@@ -886,12 +886,14 @@ static int lxcContainerMountBasicFS(bool userns_enabled,
if (ret == 0) {
VIR_DEBUG("Skipping '%s' which isn't mounted in
host",
mnt->dst);
+ VIR_FREE(mnt_src);
continue;
}
}
if (mnt->skipUserNS && userns_enabled) {
VIR_DEBUG("Skipping due to user ns enablement");
+ VIR_FREE(mnt_src);
continue;
}
@@ -930,6 +932,8 @@ static int lxcContainerMountBasicFS(bool userns_enabled,
MS_BIND|MS_REMOUNT|MS_RDONLY);
goto cleanup;
}
+
+ VIR_FREE(mnt_src);
}
rc = 0;
--
1.7.12.4
2:07 p.m.
New subject: [libvirt] [PATCH 0/6] Coverity patches to resolve RESOURCE_LEAK
On 09/01/2014 08:08 AM, Wang Rui wrote:
Another six pathes to fix resource leak.
But this may not be the end.
Wang Rui (6):
tests: Resolve Coverity RESOURCE_LEAK in commandhelper
test_conf: Resolve Coverity RESOURCE_LEAK
remote: Resolve Coverity RESOURCE_LEAK
qemu_process: Resolve Coverity RESOURCE_LEAK
vircgroup: Resolve Coverity RESOURCE_LEAK
lxc_container: Resolve Coverity RESOURCE_LEAK
daemon/remote.c | 4 +++-
src/lxc/lxc_container.c | 4 ++++
src/qemu/qemu_process.c | 1 +
src/util/vircgroup.c | 2 +-
tests/commandhelper.c | 15 +++++++++------
tests/test_conf.c | 4 ++--
6 files changed, 20 insertions(+), 10 deletions(-)
ACK series - made a couple of adjustments prior to push..
Patch1 didn't apply cleanly after '0c07d360f' - refactored a bit to
change "error" to "cleanup" and then use 'ret = EXIT_FAILURE'
at
initialization time and 'ret = EXIT_SUCCESS' when everything succeeds,
allowing just a return ret
Patch6 needed a few extra spaces in the last VIR_FREE
John
3768
days inactive
3770
days old
7 comments
2 participants
participants (2)
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John Ferlan -
Wang Rui