From: Wen Yang <wen.yang99@zte.com.cn>
To: linux-kernel@vger.kernel.org
Cc: wang.yi59@zte.com.cn, Paul Mackerras <paulus@samba.org>,
linuxppc-dev@lists.ozlabs.org, Wen Yang <wen.yang99@zte.com.cn>
Subject: [PATCH 4/5] powerpc/embedded6xx: fix possible object reference leak
Date: Fri, 22 Mar 2019 11:05:54 +0800 [thread overview]
Message-ID: <1553223955-7350-4-git-send-email-wen.yang99@zte.com.cn> (raw)
In-Reply-To: <1553223955-7350-1-git-send-email-wen.yang99@zte.com.cn>
The call to of_find_compatible_node returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.
Detected by coccinelle with the following warnings:
./arch/powerpc/platforms/embedded6xx/mvme5100.c:89:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 80, but without a corresponding object release within this function.
Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-kernel@vger.kernel.org
---
arch/powerpc/platforms/embedded6xx/mvme5100.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/platforms/embedded6xx/mvme5100.c b/arch/powerpc/platforms/embedded6xx/mvme5100.c
index 273dfa3..660654f4 100644
--- a/arch/powerpc/platforms/embedded6xx/mvme5100.c
+++ b/arch/powerpc/platforms/embedded6xx/mvme5100.c
@@ -86,6 +86,7 @@ static void __init mvme5100_pic_init(void)
cirq = irq_of_parse_and_map(cp, 0);
if (!cirq) {
pr_warn("mvme5100_pic_init: no cascade interrupt?\n");
+ of_node_put(cp);
return;
}
--
2.9.5
next prev parent reply other threads:[~2019-03-22 3:12 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-22 3:05 [PATCH 1/5] powerpc/sparse: fix possible object reference leak Wen Yang
2019-03-22 3:05 ` [PATCH 2/5] powerpc/83xx: " Wen Yang
2022-03-27 7:09 ` Christophe Leroy
2019-03-22 3:05 ` [PATCH 3/5] powerpc/powernv: " Wen Yang
2019-03-22 3:05 ` Wen Yang [this message]
2019-03-22 3:05 ` [PATCH 5/5] powerpc/8xx: " Wen Yang
2019-03-22 7:09 ` Christophe Leroy
2019-04-05 8:50 ` [1/5] powerpc/sparse: " Markus Elfring
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