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authornbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2012-03-05 00:12:44 +0000
committernbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2012-03-05 00:12:44 +0000
commit7485bf2113972b43a86011f12ef120b65c08b044 (patch)
tree3bd0ad890db8cc954a431cfa59674a66d74c6ecb
parent75d6b8d77feb31b5d9e2f02aaea27160032e95ba (diff)
kernel: fix vmalloc stack traces triggered by module with an empty init section (mostly happens on x86)
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@30813 3c298f89-4303-0410-b956-a3cf2f4a3e73
-rw-r--r--target/linux/generic/patches-3.2/340-module_alloc_size_check.patch20
-rw-r--r--target/linux/generic/patches-3.3/340-module_alloc_size_check.patch20
2 files changed, 40 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.2/340-module_alloc_size_check.patch b/target/linux/generic/patches-3.2/340-module_alloc_size_check.patch
new file mode 100644
index 000000000..6c7e50a0b
--- /dev/null
+++ b/target/linux/generic/patches-3.2/340-module_alloc_size_check.patch
@@ -0,0 +1,20 @@
+--- a/kernel/module.c
++++ b/kernel/module.c
+@@ -2286,12 +2286,15 @@
+
+ void * __weak module_alloc(unsigned long size)
+ {
+- return size == 0 ? NULL : vmalloc_exec(size);
++ return vmalloc_exec(size);
+ }
+
+ static void *module_alloc_update_bounds(unsigned long size)
+ {
+- void *ret = module_alloc(size);
++ void *ret = NULL;
++
++ if (size)
++ ret = module_alloc(size);
+
+ if (ret) {
+ mutex_lock(&module_mutex);
diff --git a/target/linux/generic/patches-3.3/340-module_alloc_size_check.patch b/target/linux/generic/patches-3.3/340-module_alloc_size_check.patch
new file mode 100644
index 000000000..9830bc507
--- /dev/null
+++ b/target/linux/generic/patches-3.3/340-module_alloc_size_check.patch
@@ -0,0 +1,20 @@
+--- a/kernel/module.c
++++ b/kernel/module.c
+@@ -2322,12 +2322,15 @@
+
+ void * __weak module_alloc(unsigned long size)
+ {
+- return size == 0 ? NULL : vmalloc_exec(size);
++ return vmalloc_exec(size);
+ }
+
+ static void *module_alloc_update_bounds(unsigned long size)
+ {
+- void *ret = module_alloc(size);
++ void *ret = NULL;
++
++ if (size)
++ ret = module_alloc(size);
+
+ if (ret) {
+ mutex_lock(&module_mutex);