From 41daf6ba594d55f201c50280ebcd430590441da1 Mon Sep 17 00:00:00 2001 From: Kefeng Wang Date: Mon, 24 May 2021 10:49:41 +0800 Subject: ASoC: core: Fix Null-point-dereference in fmt_single_name() 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 Reported-by: Hulk Robot Signed-off-by: Kefeng Wang Link: https://lore.kernel.org/r/20210524024941.159952-1-wangkefeng.wang@huawei.com Signed-off-by: Mark Brown --- sound/soc/soc-core.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'sound/soc/soc-core.c') diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 1c0904acb935..a76974ccfce1 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -2225,6 +2225,8 @@ 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); -- cgit v1.2.3