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ARM: 7540/1: kexec: Check segment memory addresses 

Ensure that the memory regions that are set within the segments
correspond to physical contiguous memory regions.

Reviewed-by: Simon Horman <horms@verge.net.au>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Matthew Leach <matthew.leach@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Matthew Leach 2012-09-21 18:56:11 +01:00 committed by Russell King
parent 4cabd1d962
commit c564df4db8
1 changed files with 6 additions and 0 deletions
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6
arch/arm/kernel/machine_kexec.c
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@ -8,6 +8,7 @@
#include <linux/reboot.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/memblock.h>
#include <asm/pgtable.h>
#include <linux/of_fdt.h>
#include <asm/pgalloc.h>
@ -44,6 +45,11 @@ int machine_kexec_prepare(struct kimage *image)
for (i = 0; i < image->nr_segments; i++) {
current_segment = &image->segment[i];
err = memblock_is_region_memory(current_segment->mem,
current_segment->memsz);
if (err)
return - EINVAL;
err = get_user(header, (__be32*)current_segment->buf);
if (err)
return err;