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authorWei Yongjun <weiyongjun1@huawei.com>2019-10-28 10:06:49 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-11-04 17:01:24 +0300
commit1fa1b6ca0fda97cbfccdc6b80b1a6b2920751665 (patch)
treeefc4f9eda54c0d063e4fedd6e0a07225334f2554 /drivers/hwtracing/intel_th
parent8e3ef7b444aec3d1059085ce41edaa76ee7340e7 (diff)
downloadlinux-1fa1b6ca0fda97cbfccdc6b80b1a6b2920751665.tar.xz
intel_th: msu: Fix possible memory leak in mode_store()
'mode' is malloced in mode_store() and should be freed before leaving from the error handling cases, otherwise it will cause memory leak. Fixes: 615c164da0eb ("intel_th: msu: Introduce buffer interface") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/lkml/20190801013825.182543-1-weiyongjun1@huawei.com/ Link: https://lore.kernel.org/r/20191028070651.9770-6-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/intel_th')
-rw-r--r--drivers/hwtracing/intel_th/msu.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c
index 9dc9ae87b5e5..6d240dfae9d9 100644
--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -1852,8 +1852,10 @@ mode_store(struct device *dev, struct device_attribute *attr, const char *buf,
return -ENOMEM;
i = match_string(msc_mode, ARRAY_SIZE(msc_mode), mode);
- if (i >= 0)
+ if (i >= 0) {
+ kfree(mode);
goto found;
+ }
/* Buffer sinks only work with a usable IRQ */
if (!msc->do_irq) {