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platform/x86: dell-smbios-wmi: Add missing kfree in error-exit from run_smbios_call
authorHans de Goede <hdegoede@redhat.com>
Thu, 26 Aug 2021 14:08:22 +0000 (16:08 +0200)
committerHans de Goede <hdegoede@redhat.com>
Thu, 26 Aug 2021 14:09:43 +0000 (16:09 +0200)
commit0487d4fc42d7f31a56cfd9e2237f9ebd889e6112
treee13e56c0d08fb682952301ea3ad8de347d6d803btree | snapshot
parentfb49d9946f96081f9a05d8f305b3f40285afe4a9commit | diff
platform/x86: dell-smbios-wmi: Add missing kfree in error-exit from run_smbios_call

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: 1a258e670434 ("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
drivers/platform/x86/dell/dell-smbios-wmi.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git