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ASoC: core: Fix Null-point-dereference in fmt_single_name() 

commit 41daf6ba594d55f201c50280ebcd430590441da1 upstream.

Check the return value of devm_kstrdup() in case of
Null-point-dereference.

Fixes: 45dd9943fc ("ASoC: core: remove artificial component and DAI name constraint")
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Link: https://lore.kernel.org/r/20210524024941.159952-1-wangkefeng.wang@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pull/374/head^2
Kefeng Wang 2021-05-24 10:49:41 +08:00 committed by Greg Kroah-Hartman
parent d83075c25a
commit 0e2c9aeb00
1 changed files with 2 additions and 0 deletions
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sound/soc/soc-core.c
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@ -2231,6 +2231,8 @@ static char *fmt_single_name(struct device *dev, int *id)
return NULL;
name = devm_kstrdup(dev, devname, GFP_KERNEL);
if (!name)
return NULL;
/* are we a "%s.%d" name (platform and SPI components) */
found = strstr(name, dev->driver->name);