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Commit 8f4b8c76 authored by Russell King's avatar Russell King
Browse files

ARM: initrd: disable initrds outside of memory 



We can't cope with initrds outside of memory, so check that the
initrd is within some declared memory to the kernel before using
it.  Otherwise we're likely to OOPS during boot.

Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 099b4d3b

arch/arm/mm/init.c

+6 −0
Original line number Diff line number Diff line
@@ -330,6 +330,12 @@ void __init arm_memblock_init(struct meminfo *mi, struct machine_desc *mdesc) 
	memblock_reserve(__pa(_stext), _end - _stext);

#endif

#ifdef CONFIG_BLK_DEV_INITRD

	if (phys_initrd_size &&

	    !memblock_is_region_memory(phys_initrd_start, phys_initrd_size)) {

		pr_err("INITRD: 0x%08lx+0x%08lx is not a memory region - disabling initrd\n",

		       phys_initrd_start, phys_initrd_size);

		phys_initrd_start = phys_initrd_size = 0;

	}

	if (phys_initrd_size &&

	    memblock_is_region_reserved(phys_initrd_start, phys_initrd_size)) {

		pr_err("INITRD: 0x%08lx+0x%08lx overlaps in-use memory region - disabling initrd\n",