[PATCH 5.4 304/355] soc: fsl: dpaa2-console: free buffer before returning from dpaa2_console_read

[Greg Kroah-Hartman]

From: Robert-Ionut Alexa <robert-ionut.alexa@xxxxxxx>

[ Upstream commit 8120bd469f5525da229953c1197f2b826c0109f4 ]

Free the kbuf buffer before returning from the dpaa2_console_read()
function. The variable no longer goes out of scope, leaking the storage
it points to.

Fixes: c93349d8c170 ("soc: fsl: add DPAA2 console support")
Signed-off-by: Robert-Ionut Alexa <robert-ionut.alexa@xxxxxxx>
Signed-off-by: Ioana Ciornei <ioana.ciornei@xxxxxxx>
Signed-off-by: Li Yang <leoyang.li@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/soc/fsl/dpaa2-console.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/soc/fsl/dpaa2-console.c b/drivers/soc/fsl/dpaa2-console.c
index 27243f706f376..53917410f2bdb 100644
--- a/drivers/soc/fsl/dpaa2-console.c
+++ b/drivers/soc/fsl/dpaa2-console.c
@@ -231,6 +231,7 @@ static ssize_t dpaa2_console_read(struct file *fp, char __user *buf,
 	cd->cur_ptr += bytes;
 	written += bytes;
 
+	kfree(kbuf);
 	return written;
 
 err_free_buf:
-- 
2.33.0