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