If a disk that a block job is registered with already has a job (stored in private data) it needs to be unrefed to keep the refcounter in balance (and properly free the object): 2,577 (104 direct, 2,473 indirect) bytes in 1 blocks are definitely lost in loss record 168 of 174 at 0x4838B86: calloc (vg_replace_malloc.c:752) by 0x4A0AD42: virAllocVar (viralloc.c:346) by 0x4A84D12: virObjectNew (virobject.c:243) by 0x21EE13: qemuBlockJobDataNew (qemu_blockjob.c:111) by 0x184EBC: qemuDomainObjPrivateXMLParseBlockjobData (qemu_domain.c:3120) by 0x1854B5: qemuDomainObjPrivateXMLParseBlockjobs (qemu_domain.c:3191) by 0x186D7D: qemuDomainObjPrivateXMLParse (qemu_domain.c:3622) by 0x4B198CC: virDomainObjParseXML (domain_conf.c:21490) by 0x4B19DDF: virDomainObjParseNode (domain_conf.c:21630) by 0x4B19E7D: virDomainObjParseFile (domain_conf.c:21649) by 0x13FDD5: testCompareStatusXMLToXMLFiles (qemuxml2xmltest.c:61) by 0x16F7D2: virTestRun (testutils.c:115) Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- src/qemu/qemu_blockjob.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/qemu/qemu_blockjob.c b/src/qemu/qemu_blockjob.c index a991309ee7..67b1f677f8 100644 --- a/src/qemu/qemu_blockjob.c +++ b/src/qemu/qemu_blockjob.c @@ -151,6 +151,7 @@ qemuBlockJobRegister(qemuBlockJobDataPtr job, if (disk) { job->disk = disk; job->chain = virObjectRef(disk->src); + virObjectUnref(QEMU_DOMAIN_DISK_PRIVATE(disk)->blockjob); QEMU_DOMAIN_DISK_PRIVATE(disk)->blockjob = virObjectRef(job); } -- 2.21.0