From: Wen Yang <[email protected]>
[ Upstream commit 27862d5a3325bc531ec15e3c607e44aa0fd57f6f ]
The codec variable is still being used after the of_node_put() call,
which may result in use-after-free.
Fixes: d947cdfd4be2 ("ASoC: simple-card: cleanup DAI link loop method - step1")
Link:
https://lore.kernel.org/r/[email protected]
Signed-off-by: Wen Yang <[email protected]>
Acked-by: Kuninori Morimoto <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
---
sound/soc/generic/simple-card.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
index 544064fdc780c..2712a2b201024 100644
--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -378,8 +378,6 @@ static int simple_for_each_link(struct asoc_simple_priv
*priv,
goto error;
}
- of_node_put(codec);
-
/* get convert-xxx property */
memset(&adata, 0, sizeof(adata));
for_each_child_of_node(node, np)
@@ -401,11 +399,13 @@ static int simple_for_each_link(struct asoc_simple_priv
*priv,
ret = func_noml(priv, np, codec, li, is_top);
if (ret < 0) {
+ of_node_put(codec);
of_node_put(np);
goto error;
}
}
+ of_node_put(codec);
node = of_get_next_child(top, node);
} while (!is_top && node);
--
2.20.1
