From: Baoquan He <[email protected]> When process 32 bit relocation tables a local variable extended is defined to calculate the physical address of relocs entry. However it's type is int which is enough for i386, for x86_64 not enough. That's why relocation can only be handled when kernel is loaded below 2G, otherwise a overflow will happen and cause system hang.
Here change it to long as 32 bit inverse relocation processing does, and this change is safe for i386 relocation handling too. Signed-off-by: Baoquan He <[email protected]> --- arch/x86/boot/compressed/misc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c index 83f98a5..bfa4f0a 100644 --- a/arch/x86/boot/compressed/misc.c +++ b/arch/x86/boot/compressed/misc.c @@ -273,7 +273,7 @@ static void handle_relocations(void *output, unsigned long output_len) * So we work backwards from the end of the decompressed image. */ for (reloc = output + output_len - sizeof(*reloc); *reloc; reloc--) { - int extended = *reloc; + long extended = *reloc; extended += map; ptr = (unsigned long)extended; -- 1.8.4.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
