This is a note to let you know that I've just added the patch titled
powerpc/xive: Fix refcount leak in xive_get_max_prio
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-xive-fix-refcount-leak-in-xive_get_max_prio.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 4f2b207af7df9a8deabad594287553d571a8b3f4
Author: Miaoqian Lin <linmq006@xxxxxxxxx>
Date: Sun Jun 5 09:32:23 2022 +0400
powerpc/xive: Fix refcount leak in xive_get_max_prio
[ Upstream commit 255b650cbec6849443ce2e0cdd187fd5e61c218c ]
of_find_node_by_path() returns a node pointer with
refcount incremented, we should use of_node_put() on it when done.
Add missing of_node_put() to avoid refcount leak.
Fixes: eac1e731b59e ("powerpc/xive: guest exploitation of the XIVE interrupt controller")
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220605053225.56125-1-linmq006@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/powerpc/sysdev/xive/spapr.c b/arch/powerpc/sysdev/xive/spapr.c
index 10235098a726..e9b8e06c9dce 100644
--- a/arch/powerpc/sysdev/xive/spapr.c
+++ b/arch/powerpc/sysdev/xive/spapr.c
@@ -569,6 +569,7 @@ static bool xive_get_max_prio(u8 *max_prio)
}
reg = of_get_property(rootdn, "ibm,plat-res-int-priorities", &len);
+ of_node_put(rootdn);
if (!reg) {
pr_err("Failed to read 'ibm,plat-res-int-priorities' property\n");
return false;
