Hi Marco, On Tue, 23 Jun 2020 13:24:48 +0200 Marco Elver <elver@xxxxxxxxxx> wrote: > > On Tue, Jun 23, 2020 at 08:17PM +1000, Stephen Rothwell wrote: > > Hi Peter, > > > > On Tue, 23 Jun 2020 11:32:30 +0200 Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > > > > > > I suppose the next quest is finding a s390 compiler version that works > > > and then bumping the version test in the aforementioned commit. > > > > Not a lot of help, but my Debian cross compiler seems to work: > > > > $ s390x-linux-gnu-gcc --version > > s390x-linux-gnu-gcc (Debian 9.3.0-13) 9.3.0 > > Rummaging through changelogs led me to 8.3.0 as the first good GCC. Also > confirmed by building that version and compiling a file that breaks with > older versions. It seems the first major version to fix it was 9, but > backported to 8.3. This is for all architectures. > > Suggested patch below. > > Thanks, > -- Marco > > ------ >8 ------ > > From: Marco Elver <elver@xxxxxxxxxx> > Date: Tue, 23 Jun 2020 12:57:42 +0200 > Subject: [PATCH] kasan: Fix required compiler version > > The first working GCC version to satisfy > CC_HAS_WORKING_NOSANITIZE_ADDRESS is GCC 8.3.0. > > Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89124 > Reported-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> > Signed-off-by: Marco Elver <elver@xxxxxxxxxx> > --- > lib/Kconfig.kasan | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan > index 7a496b885f46..19fba15e99c6 100644 > --- a/lib/Kconfig.kasan > +++ b/lib/Kconfig.kasan > @@ -16,7 +16,7 @@ config CC_HAS_KASAN_SW_TAGS > def_bool $(cc-option, -fsanitize=kernel-hwaddress) > > config CC_HAS_WORKING_NOSANITIZE_ADDRESS > - def_bool !CC_IS_GCC || GCC_VERSION >= 80000 > + def_bool !CC_IS_GCC || GCC_VERSION >= 80300 > > config KASAN > bool "KASAN: runtime memory debugger" > -- > 2.27.0.111.gc72c7da667-goog > Thanks for tracking that down. I will add that patch to the tip tree merge for today. -- Cheers, Stephen Rothwell
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