This is a note to let you know that I've just added the patch titled ARM: exynos: Fix refcount leak in exynos_map_pmu to the 5.4-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: arm-exynos-fix-refcount-leak-in-exynos_map_pmu.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From c4c79525042a4a7df96b73477feaf232fe44ae81 Mon Sep 17 00:00:00 2001 From: Miaoqian Lin <linmq006@xxxxxxxxx> Date: Mon, 23 May 2022 18:55:13 +0400 Subject: ARM: exynos: Fix refcount leak in exynos_map_pmu From: Miaoqian Lin <linmq006@xxxxxxxxx> commit c4c79525042a4a7df96b73477feaf232fe44ae81 upstream. of_find_matching_node() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak. of_node_put() checks null pointer. Fixes: fce9e5bb2526 ("ARM: EXYNOS: Add support for mapping PMU base address via DT") Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx> Link: https://lore.kernel.org/r/20220523145513.12341-1-linmq006@xxxxxxxxx Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/arm/mach-exynos/exynos.c | 1 + 1 file changed, 1 insertion(+) --- a/arch/arm/mach-exynos/exynos.c +++ b/arch/arm/mach-exynos/exynos.c @@ -136,6 +136,7 @@ static void exynos_map_pmu(void) np = of_find_matching_node(NULL, exynos_dt_pmu_match); if (np) pmu_base_addr = of_iomap(np, 0); + of_node_put(np); } static void __init exynos_init_irq(void) Patches currently in stable-queue which might be from linmq006@xxxxxxxxx are queue-5.4/arm-fix-refcount-leak-in-axxia_boot_secondary.patch queue-5.4/drm-msm-mdp4-fix-refcount-leak-in-mdp4_modeset_init_.patch queue-5.4/arm-cns3xxx-fix-refcount-leak-in-cns3xxx_init.patch queue-5.4/soc-bcm-brcmstb-pm-pm-arm-fix-refcount-leak-in-brcmstb_pm_probe.patch queue-5.4/arm-exynos-fix-refcount-leak-in-exynos_map_pmu.patch