Messages in this thread | | | Date | Thu, 15 Jul 2021 13:05:58 +0200 | From | Greg Kroah-Hartman <> | Subject | Re: perf: bench/sched-messaging.c:73:13: error: 'dummy' may be used uninitialized |
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On Tue, Jul 13, 2021 at 05:32:17PM +0200, Anders Roxell wrote: > On Tue, 13 Jul 2021 at 17:18, Greg Kroah-Hartman > <gregkh@linuxfoundation.org> wrote: > > > > On Tue, Jul 13, 2021 at 08:40:28PM +0530, Naresh Kamboju wrote: > > > LKFT have noticed these warnings / errors when we have updated gcc version from > > > gcc-9 to gcc-11 on stable-rc linux-5.4.y branch. I have provided the steps to > > > reproduce in this email below. > > > > > > Following perf builds failed with gcc-11 with linux-5.4.y branch. > > > - build-arm-gcc-11-perf > > > - build-arm64-gcc-11-perf > > > - build-i386-gcc-11-perf > > > - build-x86-gcc-11-perf > > > > > > Build error log: > > > -------------------- > > > > <snip> > > > > I imagine this is fixed in newer kernel versions, so if you could > > provide the git ids of the patches needed to fix this up in 5.4, that > > would be great! > > You were correct, I did a bisect [1] and found > d493720581a6 ("perf bench: Fix 2 memory sanitizer warnings"). > > commit d2c73501a767514b6c85c7feff9457a165d51057 upstream. > > Cherry picked it and I was able to build it on arm64 and x86.
Great, now queued up, thanks.
greg k-h
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