d0de8b37f6
The necessary check for NULL before use of function ver->close is not taking place in the failure path. This patch simply adds the missing check and fixes the problem that GRUB hangs indefinitely after booting rogue image without valid signature if secure boot is turned on. Now it displays like this for booting rogue UEFI image: error: bad shim signature error: you need to load the kernel first Press any key to continue... and then you can go back to boot menu by pressing any key or after a few seconds expired. Signed-off-by: Michael Chang <mchang@suse.com> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This is GRUB 2, the second version of the GRand Unified Bootloader. GRUB 2 is rewritten from scratch to make GNU GRUB cleaner, safer, more robust, more powerful, and more portable. See the file NEWS for a description of recent changes to GRUB 2. See the file INSTALL for instructions on how to build and install the GRUB 2 data and program files. Please visit the official web page of GRUB 2, for more information. The URL is <http://www.gnu.org/software/grub/grub.html>. More extensive documentation is available in the Info manual, accessible using 'info grub' after building and installing GRUB 2. There are a number of important user-visible differences from the first version of GRUB, now known as GRUB Legacy. For a summary, please see: info grub Introduction 'Changes from GRUB Legacy'