Re: Kernel stack overflows due to "powerpc: Remove ksp_limit onppc64" with v3.13-rc8 on ppc32 (P2020)
From: Kevin Hao
Date: Thu Jan 16 2014 - 22:24:19 EST
On Fri, Jan 17, 2014 at 01:58:10PM +1100, Benjamin Herrenschmidt wrote:
> On Fri, 2014-01-17 at 10:20 +0800, Kevin Hao wrote:
> > On Thu, Jan 16, 2014 at 10:05:32AM -0800, Guenter Roeck wrote:
> > > Hi all,
> > >
> > > I am getting kernel stack overflows with v3.13-rc8 on a system with P2020 CPU.
> > > The kernel is patched for the target, but I don't think that is related.
> > > Stack overflows are in different areas, but always in calls from __do_softirq.
> > >
> > > Crashes happen reliably either during boot or if I put any kind of load
> > > onto the system.
> > How about the following fix:
> Wow. I've been staring at that code for 15mn this morning and didn't
> spot it ! Nice catch :-)
> Any chance you can send a version of that patch that adds the C
> prototype of the function in a comment right before the assembly ?
Will do. The patch is coming soon.
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