From: Nathan Lynch Date: Thu, 19 Sep 2019 23:16:33 +0000 (-0500) Subject: powerpc/pseries/hotplug-cpu: Remove double free in error path X-Git-Tag: v5.8.2~140 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=3e444bad470ead7f965d34f351e3b44ff214b6b4;p=thirdparty%2Fkernel%2Fstable.git powerpc/pseries/hotplug-cpu: Remove double free in error path [ Upstream commit a0ff72f9f5a780341e7ff5e9ba50a0dad5fa1980 ] In the unlikely event that the device tree lacks a /cpus node, find_dlpar_cpus_to_add() oddly frees the cpu_drcs buffer it has been passed before returning an error. Its only caller also frees the buffer on error. Remove the less conventional kfree() of a caller-supplied buffer from find_dlpar_cpus_to_add(). Fixes: 90edf184b9b7 ("powerpc/pseries: Add CPU dlpar add functionality") Signed-off-by: Nathan Lynch Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20190919231633.1344-1-nathanl@linux.ibm.com Signed-off-by: Sasha Levin --- diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c index d4b346355bb9e..6d4ee03d476a9 100644 --- a/arch/powerpc/platforms/pseries/hotplug-cpu.c +++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c @@ -739,7 +739,6 @@ 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; }