12:19 a.m.
I've found them by pure chance and they were easy to fix.
Michal Privoznik (2):
virLogHostnameString: Don't leak hostname
virLogVMessage: Don't leak rawinitmsg
src/util/virlog.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
--
2.4.10
12:19 a.m.
New subject: [libvirt] [PATCH 1/2] virLogHostnameString: Don't leak hostname
Once @hostname is printed into @hoststr we don't need it anymore.
==6879== 5 bytes in 1 blocks are definitely lost in loss record 10 of 1,064
==6879== at 0x4C29F80: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==6879== by 0xA7ED599: strdup (in /lib64/libc-2.21.so)
==6879== by 0x552C126: virStrdup (virstring.c:726)
==6879== by 0x553B13E: virGetHostnameImpl (virutil.c:720)
==6879== by 0x553B1BF: virGetHostnameQuiet (virutil.c:741)
==6879== by 0x54FA3FD: virLogHostnameString (virlog.c:462)
==6879== by 0x54FAB0F: virLogVMessage (virlog.c:645)
==6879== by 0x54FA680: virLogMessage (virlog.c:531)
==6879== by 0x54FBBF4: virLogParseOutputs (virlog.c:1130)
==6879== by 0x11CB4F: daemonSetupLogging (libvirtd.c:685)
==6879== by 0x11E137: main (libvirtd.c:1297)
Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com>
---
src/util/virlog.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/src/util/virlog.c b/src/util/virlog.c
index 7d5a266..ecb1024 100644
--- a/src/util/virlog.c
+++ b/src/util/virlog.c
@@ -469,6 +469,7 @@ virLogHostnameString(const char **rawmsg,
VIR_FREE(hostname);
return -1;
}
+ VIR_FREE(hostname);
if (virLogFormatString(msg, 0, NULL, VIR_LOG_INFO, hoststr) < 0) {
VIR_FREE(hoststr);
--
2.4.10
12:36 a.m.
New subject: [libvirt] [PATCH 1/2] virLogHostnameString: Don't leak hostname
On 01/06/2016 11:19 AM, Michal Privoznik wrote:
Once @hostname is printed into @hoststr we don't need it
anymore.
==6879== 5 bytes in 1 blocks are definitely lost in loss record 10 of 1,064
==6879== at 0x4C29F80: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==6879== by 0xA7ED599: strdup (in /lib64/libc-2.21.so)
==6879== by 0x552C126: virStrdup (virstring.c:726)
==6879== by 0x553B13E: virGetHostnameImpl (virutil.c:720)
==6879== by 0x553B1BF: virGetHostnameQuiet (virutil.c:741)
==6879== by 0x54FA3FD: virLogHostnameString (virlog.c:462)
==6879== by 0x54FAB0F: virLogVMessage (virlog.c:645)
==6879== by 0x54FA680: virLogMessage (virlog.c:531)
==6879== by 0x54FBBF4: virLogParseOutputs (virlog.c:1130)
==6879== by 0x11CB4F: daemonSetupLogging (libvirtd.c:685)
==6879== by 0x11E137: main (libvirtd.c:1297)
Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com>
---
src/util/virlog.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/src/util/virlog.c b/src/util/virlog.c
index 7d5a266..ecb1024 100644
--- a/src/util/virlog.c
+++ b/src/util/virlog.c
@@ -469,6 +469,7 @@ virLogHostnameString(const char **rawmsg,
VIR_FREE(hostname);
return -1;
}
+ VIR_FREE(hostname);
if (virLogFormatString(msg, 0, NULL, VIR_LOG_INFO, hoststr) < 0) {
VIR_FREE(hoststr);
ACK.
12:19 a.m.
New subject: [libvirt] [PATCH 2/2] virLogVMessage: Don't leak rawinitmsg
Instead of misusing a const string to hold up runtime allocated
data, introduce new variable @hoststr and obey const correctness.
==6879== 15 bytes in 1 blocks are definitely lost in loss record 68 of 1,064
==6879== at 0x4C29F80: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==6879== by 0xA7DDF97: vasprintf (in /lib64/libc-2.21.so)
==6879== by 0x552BBC6: virVasprintfInternal (virstring.c:493)
==6879== by 0x552BCDB: virAsprintfInternal (virstring.c:514)
==6879== by 0x54FA44C: virLogHostnameString (virlog.c:468)
==6879== by 0x54FAB0F: virLogVMessage (virlog.c:645)
==6879== by 0x54FA680: virLogMessage (virlog.c:531)
==6879== by 0x54FBBF4: virLogParseOutputs (virlog.c:1130)
==6879== by 0x11CB4F: daemonSetupLogging (libvirtd.c:685)
==6879== by 0x11E137: main (libvirtd.c:1297)
Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com>
---
src/util/virlog.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/src/util/virlog.c b/src/util/virlog.c
index ecb1024..b8398d1 100644
--- a/src/util/virlog.c
+++ b/src/util/virlog.c
@@ -456,7 +456,7 @@ virLogVersionString(const char **rawmsg,
* reporting APIs or logging APIs, to prevent recursion
*/
static int
-virLogHostnameString(const char **rawmsg,
+virLogHostnameString(char **rawmsg,
char **msg)
{
char *hostname = virGetHostnameQuiet();
@@ -612,6 +612,7 @@ virLogVMessage(virLogSourcePtr source,
if (priority >= virLogOutputs[i].priority) {
if (virLogOutputs[i].logInitMessage) {
const char *rawinitmsg;
+ char *hoststr = NULL;
char *initmsg = NULL;
if (virLogVersionString(&rawinitmsg, &initmsg) >= 0)
virLogOutputs[i].f(&virLogSelf, VIR_LOG_INFO,
@@ -619,11 +620,12 @@ virLogVMessage(virLogSourcePtr source,
timestamp, NULL, 0, rawinitmsg, initmsg,
virLogOutputs[i].data);
VIR_FREE(initmsg);
- if (virLogHostnameString(&rawinitmsg, &initmsg) >= 0)
+ if (virLogHostnameString(&hoststr, &initmsg) >= 0)
virLogOutputs[i].f(&virLogSelf, VIR_LOG_INFO,
__FILE__, __LINE__, __func__,
- timestamp, NULL, 0, rawinitmsg, initmsg,
+ timestamp, NULL, 0, hoststr, initmsg,
virLogOutputs[i].data);
+ VIR_FREE(hoststr);
VIR_FREE(initmsg);
virLogOutputs[i].logInitMessage = false;
}
@@ -636,6 +638,7 @@ virLogVMessage(virLogSourcePtr source,
if (virLogNbOutputs == 0) {
if (logInitMessageStderr) {
const char *rawinitmsg;
+ char *hoststr = NULL;
char *initmsg = NULL;
if (virLogVersionString(&rawinitmsg, &initmsg) >= 0)
virLogOutputToFd(&virLogSelf, VIR_LOG_INFO,
@@ -643,11 +646,12 @@ virLogVMessage(virLogSourcePtr source,
timestamp, NULL, 0, rawinitmsg, initmsg,
(void *) STDERR_FILENO);
VIR_FREE(initmsg);
- if (virLogHostnameString(&rawinitmsg, &initmsg) >= 0)
+ if (virLogHostnameString(&hoststr, &initmsg) >= 0)
virLogOutputToFd(&virLogSelf, VIR_LOG_INFO,
__FILE__, __LINE__, __func__,
- timestamp, NULL, 0, rawinitmsg, initmsg,
+ timestamp, NULL, 0, hoststr, initmsg,
(void *) STDERR_FILENO);
+ VIR_FREE(hoststr);
VIR_FREE(initmsg);
logInitMessageStderr = false;
}
--
2.4.10
12:48 a.m.
New subject: [libvirt] [PATCH 2/2] virLogVMessage: Don't leak rawinitmsg
On 01/06/2016 11:19 AM, Michal Privoznik wrote:
Instead of misusing a const string to hold up runtime allocated
data, introduce new variable @hoststr and obey const correctness.
==6879== 15 bytes in 1 blocks are definitely lost in loss record 68 of 1,064
==6879== at 0x4C29F80: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==6879== by 0xA7DDF97: vasprintf (in /lib64/libc-2.21.so)
==6879== by 0x552BBC6: virVasprintfInternal (virstring.c:493)
==6879== by 0x552BCDB: virAsprintfInternal (virstring.c:514)
==6879== by 0x54FA44C: virLogHostnameString (virlog.c:468)
==6879== by 0x54FAB0F: virLogVMessage (virlog.c:645)
==6879== by 0x54FA680: virLogMessage (virlog.c:531)
==6879== by 0x54FBBF4: virLogParseOutputs (virlog.c:1130)
==6879== by 0x11CB4F: daemonSetupLogging (libvirtd.c:685)
==6879== by 0x11E137: main (libvirtd.c:1297)
Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com>
---
src/util/virlog.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/src/util/virlog.c b/src/util/virlog.c
index ecb1024..b8398d1 100644
--- a/src/util/virlog.c
+++ b/src/util/virlog.c
@@ -456,7 +456,7 @@ virLogVersionString(const char **rawmsg,
* reporting APIs or logging APIs, to prevent recursion
*/
static int
-virLogHostnameString(const char **rawmsg,
+virLogHostnameString(char **rawmsg,
char **msg)
{
char *hostname = virGetHostnameQuiet();
@@ -612,6 +612,7 @@ virLogVMessage(virLogSourcePtr source,
if (priority >= virLogOutputs[i].priority) {
if (virLogOutputs[i].logInitMessage) {
const char *rawinitmsg;
+ char *hoststr = NULL;
char *initmsg = NULL;
if (virLogVersionString(&rawinitmsg, &initmsg) >= 0)
virLogOutputs[i].f(&virLogSelf, VIR_LOG_INFO,
@@ -619,11 +620,12 @@ virLogVMessage(virLogSourcePtr source,
timestamp, NULL, 0, rawinitmsg, initmsg,
virLogOutputs[i].data);
VIR_FREE(initmsg);
- if (virLogHostnameString(&rawinitmsg, &initmsg) >= 0)
+ if (virLogHostnameString(&hoststr, &initmsg) >= 0)
virLogOutputs[i].f(&virLogSelf, VIR_LOG_INFO,
__FILE__, __LINE__, __func__,
- timestamp, NULL, 0, rawinitmsg, initmsg,
+ timestamp, NULL, 0, hoststr, initmsg,
virLogOutputs[i].data);
+ VIR_FREE(hoststr);
VIR_FREE(initmsg);
virLogOutputs[i].logInitMessage = false;
}
@@ -636,6 +638,7 @@ virLogVMessage(virLogSourcePtr source,
if (virLogNbOutputs == 0) {
if (logInitMessageStderr) {
const char *rawinitmsg;
+ char *hoststr = NULL;
char *initmsg = NULL;
if (virLogVersionString(&rawinitmsg, &initmsg) >= 0)
virLogOutputToFd(&virLogSelf, VIR_LOG_INFO,
@@ -643,11 +646,12 @@ virLogVMessage(virLogSourcePtr source,
timestamp, NULL, 0, rawinitmsg, initmsg,
(void *) STDERR_FILENO);
VIR_FREE(initmsg);
- if (virLogHostnameString(&rawinitmsg, &initmsg) >= 0)
+ if (virLogHostnameString(&hoststr, &initmsg) >= 0)
virLogOutputToFd(&virLogSelf, VIR_LOG_INFO,
__FILE__, __LINE__, __func__,
- timestamp, NULL, 0, rawinitmsg, initmsg,
+ timestamp, NULL, 0, hoststr, initmsg,
(void *) STDERR_FILENO);
+ VIR_FREE(hoststr);
VIR_FREE(initmsg);
logInitMessageStderr = false;
}
ACK.
3166
days inactive
3167
days old
4 comments
2 participants
participants (2)
-
Laine Stump -
Michal Privoznik