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driver: Don't leak saved error in virGetConnectGeneric()

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Recently, a new code was added to virGetConnectGeneric() that
saves the original error into a variable so that it's not lost in
virConnectClose() called under the 'error' label.

However, the error saving code uses virSaveLastError() +
virSetError() combo which leaks the memory allocated for the
error copy. Using virErrorPreserveLast() + virErrorRestore() does
the same job without the memleak.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Michal Privoznik 2021-05-17 14:48:36 +02:00
parent 6eac856e7c
commit d0e0a909fa
1 changed files with 3 additions and 3 deletions
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6
src/driver.c
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@ -138,7 +138,7 @@ static virConnectPtr
virGetConnectGeneric(virThreadLocal *threadPtr, const char *name)
{
virConnectPtr conn;
virErrorPtr saved;
virErrorPtr orig_err;
if (virConnectCacheInitialize() < 0)
return NULL;
@ -178,9 +178,9 @@ virGetConnectGeneric(virThreadLocal *threadPtr, const char *name)
return conn;
error:
saved = virSaveLastError();
virErrorPreserveLast(&orig_err);
virConnectClose(conn);
virSetError(saved);
virErrorRestore(&orig_err);
return NULL;
}