From: Kefeng Wang wangkefeng.wang@huawei.com
commit 41daf6ba594d55f201c50280ebcd430590441da1 upstream.
Check the return value of devm_kstrdup() in case of Null-point-dereference.
Fixes: 45dd9943fce0 ("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 --- sound/soc/soc-core.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -2231,6 +2231,8 @@ static char *fmt_single_name(struct devi 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);