ASoC: Intel: avs: Fix null-ptr-deref in avs_component_probe()

devm_kasprintf() returns NULL when memory allocation fails. Currently,
avs_component_probe() does not check for this case, which results in a
NULL pointer dereference.

Fixes: 739c031110da ("ASoC: Intel: avs: Provide support for fallback topology")
Reviewed-by: Cezary Rojewski <cezary.rojewski@intel.com>
Reviewed-by: Ethan Carter Edwards <ethan@ethancedwards.com>
Signed-off-by: Henry Martin <bsdhenrymartin@gmail.com>
Link: https://patch.msgid.link/20250402141411.44972-1-bsdhenrymartin@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/intel/avs/pcm.c b/sound/soc/intel/avs/pcm.c
index dac463390da135d7972808cb55e1c2866dd736c7..7072bcf4e56f103b4b12e3dc6db83c29d95af8d8 100644 (file)
--- a/sound/soc/intel/avs/pcm.c
+++ b/sound/soc/intel/avs/pcm.c
@@ -927,7 +927,8 @@ static int avs_component_probe(struct snd_soc_component *component)
                else
                        mach->tplg_filename = devm_kasprintf(adev->dev, GFP_KERNEL,
                                                             "hda-generic-tplg.bin");
-
+               if (!mach->tplg_filename)
+                       return -ENOMEM;
                filename = kasprintf(GFP_KERNEL, "%s/%s", component->driver->topology_name_prefix,
                                     mach->tplg_filename);
                if (!filename)