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ASoC: amd/sdw_utils: avoid NULL deref when devm_kasprintf() fails

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[ Upstream commit 5726b68473 ]

devm_kasprintf() may return NULL on memory allocation failure,
but the debug message prints cpus->dai_name before checking it.
Move the dev_dbg() call after the NULL check to prevent potential
NULL pointer dereference.

Fixes: cb8ea62e64 ("ASoC: amd/sdw_utils: add sof based soundwire generic machine driver")
Signed-off-by: Li Qiang <liqiang01@kylinos.cn>
Link: https://patch.msgid.link/20251015075530.146851-1-liqiang01@kylinos.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Li Qiang 2025-10-15 15:55:30 +08:00 committed by Greg Kroah-Hartman
parent 8ad0aea42f
commit a1cccbd196
1 changed files with 1 additions and 1 deletions
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2
sound/soc/amd/acp/acp-sdw-sof-mach.c
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@ -176,9 +176,9 @@ static int create_sdw_dailink(struct snd_soc_card *card,
cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,
"SDW%d Pin%d", "SDW%d Pin%d",
link_num, cpu_pin_id); link_num, cpu_pin_id);
dev_dbg(dev, "cpu->dai_name:%s\n", cpus->dai_name);
if (!cpus->dai_name) if (!cpus->dai_name)
return -ENOMEM; return -ENOMEM;
dev_dbg(dev, "cpu->dai_name:%s\n", cpus->dai_name);
codec_maps[j].cpu = 0; codec_maps[j].cpu = 0;
codec_maps[j].codec = j; codec_maps[j].codec = j;