lkml.org 
[lkml]   [2020]   [Sep]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [tip:x86/seves] BUILD SUCCESS WITH WARNING e6eb15c9ba3165698488ae5c34920eea20eaa38e
On Tue, 15 Sep 2020 at 23:28, Josh Poimboeuf <jpoimboe@redhat.com> wrote:
> On Tue, Sep 15, 2020 at 02:13:01PM -0700, Nick Desaulniers wrote:
> > Triple checking what I wrote above; it looks like the randconfig had
> > BOTH CONFIG_KASAN=y and CONFIG_UBSAN=y enabled. Aren't the sanitizers
> > supposed to be mutually exclusive? If so, we should ensure that via
> > kconfig these can't be selected together via randconfig.
>
> No idea...

They are not mutually exclusive. The big ones like KASAN/KCSAN/KMSAN
are mutually exclusive (compiler complains if you mix the flags), but
UBSAN can be enabled with other sanitizers (and fsanitize-coverage,
although not strictly a "sanitizer" it's still instrumentation based).
In general, we shouldn't artificially disallow mixing them if it's
supported by the compiler and our runtime can handle it.

I'll have a look at the rest tomorrow (UBSAN_TRAP stuff, which
coincidentally also came up in some other patch).

Thanks,
-- Marco

\
 
 \ /
  Last update: 2020-09-16 01:36    [W:0.162 / U:0.808 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site