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Valgrind caught a memory leak: ==2018== 9 bytes in 1 blocks are definitely lost in loss record 143 of 927 ==2018== at 0x4A0645D: malloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==2018== by 0x8C42369: strdup (strdup.c:42) ==2018== by 0x50EACC9: virStrdup (virstring.c:676) ==2018== by 0x50E79E5: virStorageSourceCopy (virstoragefile.c:1845) ==2018== by 0x20A3FAA7: qemuDomainBlockCommit (qemu_driver.c:15620) ==2018== by 0x51DC6B2: virDomainBlockCommit (libvirt.c:20092) I traced it to the fact that blockcopy and blockcommit end up reparsing a backing chain on pivot, but the chain parsing code doesn't gracefully handle the case where the backing file is already known. I'm not exactly sure when this was introduced, but suspect that the refactoring in commit 9944b71 and friends that moved towards probing in-place rather than into a temporary structure are part of the cause. * src/util/virstoragefile.c (virStorageFileGetMetadataInternal): Don't leak any prior value. Signed-off-by: Eric Blake <eblake@redhat.com>
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>