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Message-ID: <52D8A057.4080202@roeck-us.net> Date: Thu, 16 Jan 2014 19:15:35 -0800 From: Guenter Roeck <linux@...ck-us.net> To: Benjamin Herrenschmidt <benh@...nel.crashing.org>, Kevin Hao <haokexin@...il.com> CC: linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org Subject: Re: Kernel stack overflows due to "powerpc: Remove ksp_limit on ppc64" with v3.13-rc8 on ppc32 (P2020) On 01/16/2014 06:58 PM, 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 :-) > Yes, great catch! That fixes the problem. Tested-by: Guenter Roeck <linux@...ck-us.net> I assume you or Kevin will take it from there ? Thanks, Guenter -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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