1 files changed, 65 insertions, 0 deletions
diff --git a/sys-kernel/cairn-sources/files/5.9.6/hardened-patches/0061-add-kmalloc-krealloc-alloc_size-attributes.patch b/sys-kernel/cairn-sources/files/5.9.6/hardened-patches/0061-add-kmalloc-krealloc-alloc_size-attributes.patch
new file mode 100644
index 000000000000..e6b7b48e1248
--- /dev/null
+++ b/sys-kernel/cairn-sources/files/5.9.6/hardened-patches/0061-add-kmalloc-krealloc-alloc_size-attributes.patch
@@ -0,0 +1,65 @@
+From 72c23039fe70b52b494550922f2022baf94cf381 Mon Sep 17 00:00:00 2001
+From: Daniel Micay <danielmicay@gmail.com>
+Date: Wed, 3 May 2017 12:02:56 -0400
+Subject: [PATCH 061/108] add kmalloc/krealloc alloc_size attributes
+
+Note that this is overly strict when combined with ksize users accessing
+beyond the requested data size.
+
+Signed-off-by: Daniel Micay <danielmicay@gmail.com>
+---
+ include/linux/slab.h | 10 +++++-----
+ 1 file changed, 5 insertions(+), 5 deletions(-)
+
+diff --git a/include/linux/slab.h b/include/linux/slab.h
+index 24df2393ec03..a87e721d7abf 100644
+--- a/include/linux/slab.h
++++ b/include/linux/slab.h
+@@ -181,7 +181,7 @@ int kmem_cache_shrink(struct kmem_cache *);
+ /*
+  * Common kmalloc functions provided by all allocators
+  */
+-void * __must_check krealloc(const void *, size_t, gfp_t);
++void * __must_check krealloc(const void *, size_t, gfp_t) __attribute((alloc_size(2)));
+ void kfree(const void *);
+ void kfree_sensitive(const void *);
+ size_t __ksize(const void *);
+@@ -388,7 +388,7 @@ static __always_inline unsigned int kmalloc_index(size_t size)
+ }
+ #endif /* !CONFIG_SLOB */
+ 
+-void *__kmalloc(size_t size, gfp_t flags) __assume_kmalloc_alignment __malloc;
++void *__kmalloc(size_t size, gfp_t flags) __assume_kmalloc_alignment __malloc __attribute__((alloc_size(1)));
+ void *kmem_cache_alloc(struct kmem_cache *, gfp_t flags) __assume_slab_alignment __malloc;
+ void kmem_cache_free(struct kmem_cache *, void *);
+ 
+@@ -412,7 +412,7 @@ static __always_inline void kfree_bulk(size_t size, void **p)
+ }
+ 
+ #ifdef CONFIG_NUMA
+-void *__kmalloc_node(size_t size, gfp_t flags, int node) __assume_kmalloc_alignment __malloc;
++void *__kmalloc_node(size_t size, gfp_t flags, int node) __assume_kmalloc_alignment __malloc __attribute__((alloc_size(1)));
+ void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node) __assume_slab_alignment __malloc;
+ #else
+ static __always_inline void *__kmalloc_node(size_t size, gfp_t flags, int node)
+@@ -537,7 +537,7 @@ static __always_inline void *kmalloc_large(size_t size, gfp_t flags)
+  *	Try really hard to succeed the allocation but fail
+  *	eventually.
+  */
+-static __always_inline void *kmalloc(size_t size, gfp_t flags)
++static __always_inline __attribute__((alloc_size(1))) void *kmalloc(size_t size, gfp_t flags)
+ {
+ 	if (__builtin_constant_p(size)) {
+ #ifndef CONFIG_SLOB
+@@ -559,7 +559,7 @@ static __always_inline void *kmalloc(size_t size, gfp_t flags)
+ 	return __kmalloc(size, flags);
+ }
+ 
+-static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
++static __always_inline __attribute__((alloc_size(1))) void *kmalloc_node(size_t size, gfp_t flags, int node)
+ {
+ #ifndef CONFIG_SLOB
+ 	if (__builtin_constant_p(size) &&
+-- 
+2.29.2
+