Re: BUG : PowerPC RCU: torture test failed with __stack_chk_fail

Michael Ellerman
2023-04-24T22:09:02Z

Zhouyi Zhou <zhouzhouyi@gmail.com> writes:
> Dear PowerPC and RCU developers:
> During the RCU torture test on mainline (on the VM of Opensource Lab
> of Oregon State University), SRCU-P failed with __stack_chk_fail:
...
> by debugging, I see the r10 is assigned with r13 on c000000000226eb4,
> but if there is a context-switch before c000000000226edc, a false
> positive will be reported.
>
> [1] http://154.220.3.115/logs/0422/configformainline.txt

Says:

CONFIG_CC_VERSION_TEXT="powerpc64le-linux-gnu-gcc-10 (Ubuntu 10.4.0-4ubuntu1~22.04) 10.4.0"

Do you see the same issue with a newer GCC?

There's 12.2.0 here:
https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/12.2.0/
https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/ppc64le/12.2.0/

Or if you can build in a Fedora 38 system or container, it has GCC 13.

cheers