[libvirt] [PATCH] Fix Memory Leak in virQEMUCapsInitGuestFromBinary()
While running qemucaps2xmltest, it was found that valgrind pointed out the following memory leaks: ==29896== 0 bytes in 1 blocks are definitely lost in loss record 1 of 65 ==29896== at 0x4A0577B: calloc (vg_replace_malloc.c:593) ==29896== by 0x4C6B45E: virAllocN (viralloc.c:191) ==29896== by 0x4232A9: virQEMUCapsGetMachineTypesCaps (qemu_capabilities.c:1999) ==29896== by 0x4234E7: virQEMUCapsInitGuestFromBinary (qemu_capabilities.c:789) ==29896== by 0x41F10B: testQemuCapsXML (qemucaps2xmltest.c:118) ==29896== by 0x41FFD1: virtTestRun (testutils.c:201) ==29896== by 0x41EE7A: mymain (qemucaps2xmltest.c:203) ==29896== by 0x42074D: virtTestMain (testutils.c:789) ==29896== by 0x3E6CE1ED1C: (below main) (libc-start.c:226) ==29896== ==29896== 0 bytes in 1 blocks are definitely lost in loss record 2 of 65 ==29896== at 0x4A0577B: calloc (vg_replace_malloc.c:593) ==29896== by 0x4C6B45E: virAllocN (viralloc.c:191) ==29896== by 0x4232A9: virQEMUCapsGetMachineTypesCaps (qemu_capabilities.c:1999) ==29896== by 0x4234E7: virQEMUCapsInitGuestFromBinary (qemu_capabilities.c:789) ==29896== by 0x41F10B: testQemuCapsXML (qemucaps2xmltest.c:118) ==29896== by 0x41FFD1: virtTestRun (testutils.c:201) ==29896== by 0x41EEA3: mymain (qemucaps2xmltest.c:204) ==29896== by 0x42074D: virtTestMain (testutils.c:789) ==29896== by 0x3E6CE1ED1C: (below main) (libc-start.c:226) --- src/qemu/qemu_capabilities.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index 7673592..a28816d 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -800,6 +800,7 @@ virQEMUCapsInitGuestFromBinary(virCapsPtr caps, machines)) == NULL) goto cleanup; + virCapabilitiesFreeMachines(machines, nmachines); machines = NULL; nmachines = 0; @@ -852,6 +853,7 @@ virQEMUCapsInitGuestFromBinary(virCapsPtr caps, goto cleanup; } + virCapabilitiesFreeMachines(machines, nmachines); machines = NULL; nmachines = 0; -- 1.7.1
On Thu, Mar 27, 2014 at 12:00:49AM +0530, Nehal J Wani wrote:
While running qemucaps2xmltest, it was found that valgrind pointed out the following memory leaks:
==29896== 0 bytes in 1 blocks are definitely lost in loss record 1 of 65 ==29896== at 0x4A0577B: calloc (vg_replace_malloc.c:593) ==29896== by 0x4C6B45E: virAllocN (viralloc.c:191) ==29896== by 0x4232A9: virQEMUCapsGetMachineTypesCaps (qemu_capabilities.c:1999) ==29896== by 0x4234E7: virQEMUCapsInitGuestFromBinary (qemu_capabilities.c:789) ==29896== by 0x41F10B: testQemuCapsXML (qemucaps2xmltest.c:118) ==29896== by 0x41FFD1: virtTestRun (testutils.c:201) ==29896== by 0x41EE7A: mymain (qemucaps2xmltest.c:203) ==29896== by 0x42074D: virtTestMain (testutils.c:789) ==29896== by 0x3E6CE1ED1C: (below main) (libc-start.c:226) ==29896== ==29896== 0 bytes in 1 blocks are definitely lost in loss record 2 of 65 ==29896== at 0x4A0577B: calloc (vg_replace_malloc.c:593) ==29896== by 0x4C6B45E: virAllocN (viralloc.c:191) ==29896== by 0x4232A9: virQEMUCapsGetMachineTypesCaps (qemu_capabilities.c:1999) ==29896== by 0x4234E7: virQEMUCapsInitGuestFromBinary (qemu_capabilities.c:789) ==29896== by 0x41F10B: testQemuCapsXML (qemucaps2xmltest.c:118) ==29896== by 0x41FFD1: virtTestRun (testutils.c:201) ==29896== by 0x41EEA3: mymain (qemucaps2xmltest.c:204) ==29896== by 0x42074D: virtTestMain (testutils.c:789) ==29896== by 0x3E6CE1ED1C: (below main) (libc-start.c:226)
--- src/qemu/qemu_capabilities.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index 7673592..a28816d 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -800,6 +800,7 @@ virQEMUCapsInitGuestFromBinary(virCapsPtr caps, machines)) == NULL) goto cleanup;
+ virCapabilitiesFreeMachines(machines, nmachines); machines = NULL; nmachines = 0;
@@ -852,6 +853,7 @@ virQEMUCapsInitGuestFromBinary(virCapsPtr caps, goto cleanup; }
+ virCapabilitiesFreeMachines(machines, nmachines); machines = NULL; nmachines = 0;
This is wrong. virCapabilitiesAddGuest owns the machines pointer after it completes successfully Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|
participants (2)
-
Daniel P. Berrange -
Nehal J Wani