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[ Upstream commit0487d4fc42] As pointed out be Kees Cook if we return -EIO because the obj->type != ACPI_TYPE_BUFFER, then we must kfree the output buffer before the return. Fixes:1a258e6704("platform/x86: dell-smbios-wmi: Add new WMI dispatcher driver") Reported-by: Kees Cook <keescook@chromium.org> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20210826140822.71198-1-hdegoede@redhat.com Signed-off-by: Sasha Levin <sashal@kernel.org>