loader/i386/linux: Cast left shift to grub_uint32_t

The Coverity complains that we might overflow into a negative value when
setting linux_params.kernel_alignment to (1 << align). We can remedy
this by casting it to grub_uint32_t.

Fixes: CID 473876
Signed-off-by: Alec Brown <alec.r.brown@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

diff --git a/grub-core/loader/i386/linux.c b/grub-core/loader/i386/linux.c
index 977757f2cc9247e486095ecbd86f422952f87620..b051600c87ec5f3f8135beb34acd97a9c8f77efc 100644 (file)
--- a/grub-core/loader/i386/linux.c
+++ b/grub-core/loader/i386/linux.c
@@ -806,7 +806,7 @@ grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),
     }
 
   linux_params.code32_start = prot_mode_target + lh.code32_start - GRUB_LINUX_BZIMAGE_ADDR;
-  linux_params.kernel_alignment = (1 << align);
+  linux_params.kernel_alignment = ((grub_uint32_t) 1 << align);
   linux_params.ps_mouse = linux_params.padding11 = 0;
   linux_params.type_of_loader = GRUB_LINUX_BOOT_LOADER_TYPE;