Hi Andrew, On Thu, 7 Jan 2021 15:06:37 -0800 Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > > On Thu, 7 Jan 2021 13:09:29 -0800 Kees Cook <keescook@xxxxxxxxxxxx> wrote: > > > > --- a/lib/Kconfig.ubsan~ubsan-disable-unsigned-integer-overflow-sanitizer-with-clang-fix > > > +++ a/lib/Kconfig.ubsan > > > @@ -122,7 +122,7 @@ config UBSAN_SIGNED_OVERFLOW > > > > > > config UBSAN_UNSIGNED_OVERFLOW > > > bool "Perform checking for unsigned arithmetic overflow" > > > - # clang hugely expands stack usage with -fsanitize=object-size > > > + # clang hugely expands stack usage with -fsanitize=unsigned-integer-overflow > > > depends on !CC_IS_CLANG > > > > The above "!CC_IS_CLANG" needs to be dropped. I makes it impossible to use at > > all (unsigned UBSAN overflow is only implemented for Clang). > > It isn't clear to me that this patch remains valid anyway - I'll drop > it. I have dropped it from linux-next as well. -- Cheers, Stephen Rothwell
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