[PATCH 5.4 118/168] ASoC: topology: Fix memleak in soc_tplg_manifest_load()

Greg Kroah-Hartman
2020-03-10T13:28:50Z

From: Dragos Tarcatu <dragos_tarcatu@mentor.com>

commit 242c46c023610dbc0213fc8fb6b71eb836bc5d95 upstream.

In case of ABI version mismatch, _manifest needs to be freed as
it is just a copy of the original topology manifest. However, if
a driver manifest handler is defined, that would get executed and
the cleanup is never reached. Fix that by getting the return status
of manifest() instead of returning directly.

Fixes: 583958fa2e52 ("ASoC: topology: Make manifest backward compatible from ABI v4")
Signed-off-by: Dragos Tarcatu <dragos_tarcatu@mentor.com>
Link: https://lore.kernel.org/r/20200207185325.22320-3-dragos_tarcatu@mentor.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
sound/soc/soc-topology.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)

--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -2488,7 +2488,7 @@ static int soc_tplg_manifest_load(struct
{
struct snd_soc_tplg_manifest *manifest, *_manifest;
bool abi_match;
- int err;
+ int ret = 0;

if (tplg->pass != SOC_TPLG_PASS_MANIFEST)
return 0;
@@ -2501,19 +2501,19 @@ static int soc_tplg_manifest_load(struct
_manifest = manifest;
} else {
abi_match = false;
- err = manifest_new_ver(tplg, manifest, &_manifest);
- if (err < 0)
- return err;
+ ret = manifest_new_ver(tplg, manifest, &_manifest);
+ if (ret < 0)
+ return ret;
}

/* pass control to component driver for optional further init */
if (tplg->comp && tplg->ops && tplg->ops->manifest)
- return tplg->ops->manifest(tplg->comp, tplg->index, _manifest);
+ ret = tplg->ops->manifest(tplg->comp, tplg->index, _manifest);

if (!abi_match) /* free the duplicated one */
kfree(_manifest);

- return 0;
+ return ret;
}

/* validate header magic, size and type */