Re: perf: bench/sched-messaging.c:73:13: error: 'dummy' may be used uninitialized

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!

thanks,

greg k-h