On Saturday 25 December 2021 20:50:19 Pierre Bourdon wrote:
Recent changes caused fields in the image main header to be modified after the header checksum had already been computed. Move the checksum computation to once again be the last operation performed on the header.
Fixes: 2b0980c24027 ("tools: kwbimage: Fill the real header size into the main header")
Signed-off-by: Pierre Bourdon delroth@gmail.com
Thanks!
Reviewed-by: Pali Rohár pali@kernel.org
Stefan and Tom, could you please include this fixup patch into master branch for upcoming release? During development we broke kwbimage / mkimage generator and I think it is something which we should have fixed in upcoming release (if it is not too late now...).
tools/kwbimage.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/tools/kwbimage.c b/tools/kwbimage.c index 875f636c7a..0951d7861c 100644 --- a/tools/kwbimage.c +++ b/tools/kwbimage.c @@ -1398,9 +1398,6 @@ static void *image_create_v1(size_t *imagesz, struct image_tool_params *params, headersz, image, secure_hdr)) return NULL;
/* Calculate and set the header checksum */
main_hdr->checksum = image_checksum8(main_hdr, headersz);
*imagesz = headersz;
/* Fill the real header size without padding into the main header */
@@ -1410,6 +1407,9 @@ static void *image_create_v1(size_t *imagesz, struct image_tool_params *params, main_hdr->headersz_lsb = cpu_to_le16(headersz & 0xFFFF); main_hdr->headersz_msb = (headersz & 0xFFFF0000) >> 16;
- /* Calculate and set the header checksum */
- main_hdr->checksum = image_checksum8(main_hdr, headersz);
- return image;
}
-- 2.34.0