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hostmem-file: fixed the memory leak while get pmem path.

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object_get_canonical_path_component() returns a string which
must be freed using g_free().

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Zhang Yi <yi.z.zhang@linux.intel.com>
Message-Id: <7328fb16c394eaf5d65437d11c2a9343647b6d3d.1535471899.git.yi.z.zhang@linux.intel.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Zhang Yi 2018-08-29 00:14:22 +08:00 committed by Eduardo Habkost
parent 13399aad4f
commit a1f3bb1845
1 changed files with 8 additions and 2 deletions
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10
backends/hostmem-file.c
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@ -145,20 +145,26 @@ static void file_memory_backend_set_pmem(Object *o, bool value, Error **errp)
HostMemoryBackendFile *fb = MEMORY_BACKEND_FILE(o);
if (host_memory_backend_mr_inited(backend)) {
char *path = object_get_canonical_path_component(o);
error_setg(errp, "cannot change property 'pmem' of %s '%s'",
object_get_typename(o),
object_get_canonical_path_component(o));
path);
g_free(path);
return;
}
#ifndef CONFIG_LIBPMEM
if (value) {
Error *local_err = NULL;
char *path = object_get_canonical_path_component(o);
error_setg(&local_err,
"Lack of libpmem support while setting the 'pmem=on'"
" of %s '%s'. We can't ensure data persistence.",
object_get_typename(o),
object_get_canonical_path_component(o));
path);
g_free(path);
error_propagate(errp, local_err);
return;
}