diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0180-Protect-__release_resource-against-resources-without.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0180-Protect-__release_resource-against-resources-without.patch | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0180-Protect-__release_resource-against-resources-without.patch b/target/linux/brcm2708/patches-4.4/0180-Protect-__release_resource-against-resources-without.patch new file mode 100644 index 0000000000..936cd00cb8 --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0180-Protect-__release_resource-against-resources-without.patch @@ -0,0 +1,28 @@ +From c841449374b2acd024ae8971bbd2474c6ba27309 Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Fri, 13 Mar 2015 12:43:36 +0000 +Subject: [PATCH 180/232] Protect __release_resource against resources without + parents + +Without this patch, removing a device tree overlay can crash here. + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> +--- + kernel/resource.c | 6 ++++++ + 1 file changed, 6 insertions(+) + +--- a/kernel/resource.c ++++ b/kernel/resource.c +@@ -237,6 +237,12 @@ static int __release_resource(struct res + { + struct resource *tmp, **p; + ++ if (!old->parent) { ++ WARN(old->sibling, "sibling but no parent"); ++ if (old->sibling) ++ return -EINVAL; ++ return 0; ++ } + p = &old->parent->child; + for (;;) { + tmp = *p; |