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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-06-11 00:43:21 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-06-11 00:43:21 +0100
commit8f4b8c7613928d5c6da43715fedc00a7b1ee53be (patch)
tree10ea6f43945712e725268f2b025d56e6005b4808
parent099b4d3b473db012a55ce6bec9ef594d0508e782 (diff)
downloadop-kernel-dev-8f4b8c7613928d5c6da43715fedc00a7b1ee53be.zip
op-kernel-dev-8f4b8c7613928d5c6da43715fedc00a7b1ee53be.tar.gz
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: Russell King <rmk+kernel@arm.linux.org.uk>
-rw-r--r--arch/arm/mm/init.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index b2cf946..c19571c 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -331,6 +331,12 @@ void __init arm_memblock_init(struct meminfo *mi, struct machine_desc *mdesc)
#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",
phys_initrd_start, phys_initrd_size);
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