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authorMarco Elver <elver@google.com>2020-08-06 23:24:31 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-08-07 11:33:28 -0700
commitac4766be5e2d103ebf5d3f2ff676f866f6a56d44 (patch)
tree2b2eb831f4b6842669673ed4af12a7e05ed68ea6 /Documentation/dev-tools
parent7a3767f83f173f9df9af9eb04959abe2966d4cc8 (diff)
kasan: update required compiler versions in documentation
Updates the recently changed compiler requirements for KASAN. In particular, we require GCC >= 8.3.0, and add a note that Clang 11 supports OOB detection of globals. Fixes: 7b861a53e46b ("kasan: Bump required compiler version") Fixes: acf7b0bf7dcf ("kasan: Fix required compiler version") Signed-off-by: Marco Elver <elver@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Andrey Konovalov <andreyknvl@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Walter Wu <walter-zh.wu@mediatek.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Daniel Axtens <dja@axtens.net> Link: http://lkml.kernel.org/r/20200629104157.3242503-2-elver@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/dev-tools')
-rw-r--r--Documentation/dev-tools/kasan.rst7
1 files changed, 2 insertions, 5 deletions
diff --git a/Documentation/dev-tools/kasan.rst b/Documentation/dev-tools/kasan.rst
index c652d740735d..15a2a53e77b0 100644
--- a/Documentation/dev-tools/kasan.rst
+++ b/Documentation/dev-tools/kasan.rst
@@ -13,11 +13,8 @@ KASAN uses compile-time instrumentation to insert validity checks before every
memory access, and therefore requires a compiler version that supports that.
Generic KASAN is supported in both GCC and Clang. With GCC it requires version
-4.9.2 or later for basic support and version 5.0 or later for detection of
-out-of-bounds accesses for stack and global variables and for inline
-instrumentation mode (see the Usage section). With Clang it requires version
-7.0.0 or later and it doesn't support detection of out-of-bounds accesses for
-global variables yet.
+8.3.0 or later. With Clang it requires version 7.0.0 or later, but detection of
+out-of-bounds accesses for global variables is only supported since Clang 11.
Tag-based KASAN is only supported in Clang and requires version 7.0.0 or later.