From: Kees Cook <keescook@chromium.org>
To: linux-kernel@vger.kernel.org
Cc: Kees Cook <keescook@chromium.org>,
Daniel Micay <danielmicay@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, Joe Perches <joe@perches.com>,
Miguel Ojeda <ojeda@kernel.org>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Andy Whitcroft <apw@canonical.com>,
Dwaipayan Ray <dwaipayanray1@gmail.com>,
Lukas Bulwahn <lukas.bulwahn@gmail.com>,
Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Vlastimil Babka <vbabka@suse.cz>, Dennis Zhou <dennis@kernel.org>,
Tejun Heo <tj@kernel.org>, Masahiro Yamada <masahiroy@kernel.org>,
Michal Marek <michal.lkml@markovi.net>,
clang-built-linux@googlegroups.com, linux-kbuild@vger.kernel.org,
linux-hardening@vger.kernel.org
Subject: [PATCH v2 7/7] mm/vmalloc: Add __alloc_size attributes for better bounds checking
Date: Wed, 18 Aug 2021 14:40:21 -0700 [thread overview]
Message-ID: <20210818214021.2476230-8-keescook@chromium.org> (raw)
In-Reply-To: <20210818214021.2476230-1-keescook@chromium.org>
As already done in GrapheneOS, add the __alloc_size attribute for
appropriate vmalloc allocator interfaces, to provide additional hinting
for better bounds checking, assisting CONFIG_FORTIFY_SOURCE and other
compiler optimizations.
Co-developed-by: Daniel Micay <danielmicay@gmail.com>
Signed-off-by: Daniel Micay <danielmicay@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org
Signed-off-by: Kees Cook <keescook@chromium.org>
---
include/linux/vmalloc.h | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 2644425b6dce..1521ba38957d 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -136,20 +136,31 @@ static inline void vmalloc_init(void)
static inline unsigned long vmalloc_nr_pages(void) { return 0; }
#endif
+__alloc_size(1)
extern void *vmalloc(unsigned long size);
+__alloc_size(1)
extern void *vzalloc(unsigned long size);
+__alloc_size(1)
extern void *vmalloc_user(unsigned long size);
+__alloc_size(1)
extern void *vmalloc_node(unsigned long size, int node);
+__alloc_size(1)
extern void *vzalloc_node(unsigned long size, int node);
+__alloc_size(1)
extern void *vmalloc_32(unsigned long size);
+__alloc_size(1)
extern void *vmalloc_32_user(unsigned long size);
+__alloc_size(1)
extern void *__vmalloc(unsigned long size, gfp_t gfp_mask);
+__alloc_size(1)
extern void *__vmalloc_node_range(unsigned long size, unsigned long align,
unsigned long start, unsigned long end, gfp_t gfp_mask,
pgprot_t prot, unsigned long vm_flags, int node,
const void *caller);
+__alloc_size(1)
void *__vmalloc_node(unsigned long size, unsigned long align, gfp_t gfp_mask,
int node, const void *caller);
+__alloc_size(1)
void *vmalloc_no_huge(unsigned long size);
extern void vfree(const void *addr);
--
2.30.2
prev parent reply other threads:[~2021-08-18 21:40 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-18 21:40 [PATCH v2 0/7] Add __alloc_size() for better bounds checking Kees Cook
2021-08-18 21:40 ` [PATCH v2 1/7] Compiler Attributes: " Kees Cook
2021-08-18 21:51 ` Nathan Chancellor
2021-08-18 23:19 ` Andrew Morton
2021-08-19 7:06 ` Kees Cook
2021-08-19 0:04 ` Miguel Ojeda
2021-08-18 21:40 ` [PATCH v2 2/7] checkpatch: Add __alloc_size() to known $Attribute Kees Cook
2021-08-18 21:40 ` [PATCH v2 3/7] slab: Clean up function declarations Kees Cook
2021-08-18 21:40 ` [PATCH v2 4/7] slab: Add __alloc_size attributes for better bounds checking Kees Cook
2021-08-19 8:27 ` Rasmus Villemoes
2021-08-25 21:31 ` Nick Desaulniers
2021-09-22 22:41 ` Kees Cook
2021-08-18 21:40 ` [PATCH v2 5/7] mm/page_alloc: " Kees Cook
2021-08-18 21:40 ` [PATCH v2 6/7] percpu: " Kees Cook
2021-08-19 0:42 ` Dennis Zhou
2021-08-19 3:36 ` Kees Cook
2021-08-19 14:12 ` Dennis Zhou
2021-08-20 5:11 ` Andrew Morton
2021-08-20 5:27 ` Kees Cook
2021-08-18 21:40 ` Kees Cook [this message]
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