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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 /arch/arm/mm/init.c
parent099b4d3b473db012a55ce6bec9ef594d0508e782 (diff)
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>
Diffstat (limited to 'arch/arm/mm/init.c')
-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 b2cf9460ea6..c19571c40a2 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);