Messages in this thread Patch in this message |  | | From | Qinglang Miao <> | Subject | [PATCH 2/3] powerpc/pseries/hotplug-cpu: fix memleak in dlpar_cpu_add_by_count | Date | Sat, 28 Nov 2020 18:20:01 +0800 |
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kfree(cpu_drcs) should be called when it fails to perform of_find_node_by_path("/cpus") in dlpar_cpu_add_by_count, otherwise there would be a memleak.
In fact, the patch a0ff72f9f5a7 ought to remove kfree in find_dlpar_cpus_to_add rather than dlpar_cpu_add_by_count. I guess there might be a mistake when apply that one.
Fixes: a0ff72f9f5a7 ("powerpc/pseries/hotplug-cpu: Remove double free in error path") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com> --- arch/powerpc/platforms/pseries/hotplug-cpu.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c index f2837e33b..4bb1c9f2b 100644 --- a/arch/powerpc/platforms/pseries/hotplug-cpu.c +++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c @@ -743,6 +743,7 @@ static int dlpar_cpu_add_by_count(u32 cpus_to_add) parent = of_find_node_by_path("/cpus"); if (!parent) { pr_warn("Could not find CPU root node in device tree\n"); + kfree(cpu_drcs); return -1; } -- 2.23.0
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