[PATCH] powerpc/stacktrace: Fix spurious "stale" traces in raise_backtrace_ipi()

[Michael Ellerman]

On Sat, 26 Jun 2021 00:04:08 +1000, Michael Ellerman wrote:
> In raise_backtrace_ipi() we iterate through the cpumask of CPUs, sending
> each an IPI asking them to do a backtrace, but we don't wait for the
> backtrace to happen.
> 
> We then iterate through the CPU mask again, and if any CPU hasn't done
> the backtrace and cleared itself from the mask, we print a trace on its
> behalf, noting that the trace may be "stale".
> 
> [...]

Applied to powerpc/next.

[1/1] powerpc/stacktrace: Fix spurious "stale" traces in raise_backtrace_ipi()
      https://git.kernel.org/powerpc/c/7c6986ade69e3c81bac831645bc72109cd798a80

cheers