diff options
| author | Nícolas F. R. A. Prado <nfraprado@collabora.com> | 2024-01-08 17:44:58 -0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2024-01-08 20:58:28 +0000 |
| commit | 4d4e1b6319e5c4425ea3faeaf9a10b8b4c16c1e1 (patch) | |
| tree | 22079a8b051bfbf1d24028b87c8210b0cb14a9e4 /sound | |
| parent | 3ec71290db4de298b67659ef2bc2a8f84cf9537b (diff) | |
ASoC: mediatek: mt8192: Check existence of dai_name before dereferencing
Following commit 13f58267cda3 ("ASoC: soc.h: don't create dummy
Component via COMP_DUMMY()"), the dai_name field is only populated for
dummy components after the card is registered. This causes a null
pointer dereference in the mt8192-mt6359 sound card driver's probe
function when searching for a dai_name among all the card's dai links.
Verify that the dai_name is non-null before passing it to strcmp. While
at it, also check that there's at least one codec.
Reported-by: kernelci.org bot <bot@kernelci.org>
Closes: https://linux.kernelci.org/test/case/id/6582cd6d992645c680e13478/
Fixes: 13f58267cda3 ("ASoC: soc.h: don't create dummy Component via COMP_DUMMY()")
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Link: https://msgid.link/r/20240108204508.691739-1-nfraprado@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c b/sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c index 5bd6addd1450..bfcb2c486c39 100644 --- a/sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c +++ b/sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c @@ -1208,7 +1208,8 @@ static int mt8192_mt6359_dev_probe(struct platform_device *pdev) dai_link->ignore = 0; } - if (strcmp(dai_link->codecs[0].dai_name, RT1015_CODEC_DAI) == 0) + if (dai_link->num_codecs && dai_link->codecs[0].dai_name && + strcmp(dai_link->codecs[0].dai_name, RT1015_CODEC_DAI) == 0) dai_link->ops = &mt8192_rt1015_i2s_ops; if (!dai_link->platforms->name) |