5.15-stable review patch. If anyone has any objections, please let me know.
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From: Joe Hattori joe@pf.is.s.u-tokyo.ac.jp
[ Upstream commit 472a989029aac2b78ef2f0b18b27c568bf76d104 ]
init_ixp_crypto() calls of_parse_phandle_with_fixed_args() multiple times, but does not release all the obtained refcounts. Fix it by adding of_node_put() calls.
This bug was found by an experimental static analysis tool that I am developing.
Fixes: 76f24b4f46b8 ("crypto: ixp4xx - Add device tree support") Signed-off-by: Joe Hattori joe@pf.is.s.u-tokyo.ac.jp Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/crypto/ixp4xx_crypto.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/crypto/ixp4xx_crypto.c b/drivers/crypto/ixp4xx_crypto.c index 98730aab287c3..2bf315554f02a 100644 --- a/drivers/crypto/ixp4xx_crypto.c +++ b/drivers/crypto/ixp4xx_crypto.c @@ -470,6 +470,7 @@ static int init_ixp_crypto(struct device *dev) return -ENODEV; } npe_id = npe_spec.args[0]; + of_node_put(npe_spec.np);
ret = of_parse_phandle_with_fixed_args(np, "queue-rx", 1, 0, &queue_spec); @@ -478,6 +479,7 @@ static int init_ixp_crypto(struct device *dev) return -ENODEV; } recv_qid = queue_spec.args[0]; + of_node_put(queue_spec.np);
ret = of_parse_phandle_with_fixed_args(np, "queue-txready", 1, 0, &queue_spec); @@ -486,6 +488,7 @@ static int init_ixp_crypto(struct device *dev) return -ENODEV; } send_qid = queue_spec.args[0]; + of_node_put(queue_spec.np); } else { /* * Hardcoded engine when using platform data, this goes away