mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-21 14:37:57 +00:00
29 lines
757 B
Diff
29 lines
757 B
Diff
|
From fd4dd0612e2b97840bb5ca1699ff7d779704c4a9 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
||
|
|
Date: Fri, 13 Mar 2015 12:43:36 +0000
|
||
|
|
Subject: [PATCH 0066/1085] 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
|
||
|
|
@@ -200,6 +200,12 @@ static int __release_resource(struct res
|
||
|
|
{
|
||
|
|
struct resource *tmp, **p, *chd;
|
||
|
|
|
||
|
|
+ if (!old->parent) {
|
||
|
|
+ WARN(old->sibling, "sibling but no parent");
|
||
|
|
+ if (old->sibling)
|
||
|
|
+ return -EINVAL;
|
||
|
|
+ return 0;
|
||
|
|
+ }
|
||
|
|
p = &old->parent->child;
|
||
|
|
for (;;) {
|
||
|
|
tmp = *p;
|