From: John Hubbard jhubbard@nvidia.com
commit 7846f58fba964af7cb8cf77d4d13c33254725211 upstream.
commit a90118c445cc ("x86/boot: Save fields explicitly, zero out everything else") had two errors:
* It preserved boot_params.acpi_rsdp_addr, and * It failed to preserve boot_params.hdr
Therefore, zero out acpi_rsdp_addr, and preserve hdr.
Fixes: a90118c445cc ("x86/boot: Save fields explicitly, zero out everything else") Reported-by: Neil MacLeod neil@nmacleod.com Suggested-by: Thomas Gleixner tglx@linutronix.de Signed-off-by: John Hubbard jhubbard@nvidia.com Signed-off-by: Thomas Gleixner tglx@linutronix.de Tested-by: Neil MacLeod neil@nmacleod.com Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20190821192513.20126-1-jhubbard@nvidia.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/x86/include/asm/bootparam_utils.h | 1 + 1 file changed, 1 insertion(+)
--- a/arch/x86/include/asm/bootparam_utils.h +++ b/arch/x86/include/asm/bootparam_utils.h @@ -70,6 +70,7 @@ static void sanitize_boot_params(struct BOOT_PARAM_PRESERVE(eddbuf_entries), BOOT_PARAM_PRESERVE(edd_mbr_sig_buf_entries), BOOT_PARAM_PRESERVE(edd_mbr_sig_buffer), + BOOT_PARAM_PRESERVE(hdr), BOOT_PARAM_PRESERVE(eddbuf), };