Payload size is the variable request size, not the total buffer size.
Take that into account and subtract header sizes.
Fixes: db1ecfb473ac ("hw/uefi: add var-service-vars.c")
Signed-off-by: Gerd Hoffmann <[email protected]>
---
hw/uefi/var-service-vars.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/uefi/var-service-vars.c b/hw/uefi/var-service-vars.c
index 8533533ea5c8..5607763525b3 100644
--- a/hw/uefi/var-service-vars.c
+++ b/hw/uefi/var-service-vars.c
@@ -592,7 +592,7 @@ uefi_vars_mm_get_payload_size(uefi_vars_state *uv,
mm_header *mhdr,
return uefi_vars_mm_error(mhdr, mvar, EFI_BAD_BUFFER_SIZE);
}
- ps->payload_size = uv->buf_size;
+ ps->payload_size = uv->buf_size - sizeof(*mhdr) - sizeof(*mvar);
mvar->status = EFI_SUCCESS;
return length;
}
--
2.52.0
