When the requested and root ranges do not intersect,
__reserve_region_with_split will eventually overflow the stack.
Signed-off-by: Octavian Purdila <[email protected]>
---
kernel/resource.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/kernel/resource.c b/kernel/resource.c
index 7e8ea66..1f8d698 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -789,7 +789,11 @@ void __init reserve_region_with_split(struct resource *root,
const char *name)
{
write_lock(&resource_lock);
- __reserve_region_with_split(root, start, end, name);
+ if (start > root->end || end < root->start)
+ printk(KERN_ERR "Requested range (0x%llx-0x%llx) not in root range (0x%llx-0x%llx)\n",
+ start, end, root->start, root->end);
+ else
+ __reserve_region_with_split(root, start, end, name);
write_unlock(&resource_lock);
}
--
1.7.5.4