From ac4766be5e2d103ebf5d3f2ff676f866f6a56d44 Mon Sep 17 00:00:00 2001 From: Marco Elver Date: Thu, 6 Aug 2020 23:24:31 -0700 Subject: 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 Signed-off-by: Andrew Morton Reviewed-by: Andrey Konovalov Cc: Dmitry Vyukov Cc: Andrey Ryabinin Cc: Nick Desaulniers Cc: Walter Wu Cc: Arnd Bergmann Cc: Daniel Axtens Link: http://lkml.kernel.org/r/20200629104157.3242503-2-elver@google.com Signed-off-by: Linus Torvalds --- Documentation/dev-tools/kasan.rst | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) (limited to 'Documentation/dev-tools') 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. -- cgit v1.2.3