On Thu, May 21, 2020 at 03:42:12PM +0200, Marco Elver wrote: > On Thu, 21 May 2020 at 15:36, Will Deacon <w...@kernel.org> wrote: > > > > On Thu, May 21, 2020 at 01:08:43PM +0200, Marco Elver wrote: > > > This patch series is the conclusion to [1], where we determined that due > > > to various interactions with no_sanitize attributes and the new > > > {READ,WRITE}_ONCE(), KCSAN will require Clang 11 or later. Other > > > sanitizers are largely untouched, and only KCSAN now has a hard > > > dependency on Clang 11. To test, a recent Clang development version will > > > suffice [2]. While a little inconvenient for now, it is hoped that in > > > future we may be able to fix GCC and re-enable GCC support. > > > > > > The patch "kcsan: Restrict supported compilers" contains a detailed list > > > of requirements that led to this decision. > > > > > > Most of the patches are related to KCSAN, however, the first patch also > > > includes an UBSAN related fix and is a dependency for the remaining > > > ones. The last 2 patches clean up the attributes by moving them to the > > > right place, and fix KASAN's way of defining __no_kasan_or_inline, > > > making it consistent with KCSAN. > > > > > > The series has been tested by running kcsan-test several times and > > > completed successfully. > > > > I've left a few minor comments, but the only one that probably needs a bit > > of thought is using data_race() with const non-scalar expressions, since I > > think that's now prohibited by these changes. We don't have too many > > data_race() users yet, so probably not a big deal, but worth bearing in > > mind. > > If you don't mind, I'll do a v3 with that fixed.
Works for me, thanks. Will