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Date: Fri, 8 Aug 2008 10:44:01 +0200 From: Wolfgang Walter <wolfgang.walter@...m.de> To: Suresh Siddha <suresh.b.siddha@...el.com> Cc: Herbert Xu <herbert@...dor.apana.org.au>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>, vegard.nossum@...il.com Subject: Re: Kernel oops with 2.6.26, padlock and ipsec: probably problem with fpu state changes On Wednesday 06 August 2008, Suresh Siddha wrote: > On Wed, Aug 06, 2008 at 01:14:02PM -0700, Siddha, Suresh B wrote: > > On Wed, Aug 06, 2008 at 10:33:25AM -0700, Wolfgang Walter wrote: > > > Hello Herbert, > > > > > > I think I finally found the problem. > > > > > > Here a short description again: all our routers with a via C3 using padlock for AES-encryption are > > > crashing with 2.6.26 while they work fine with 2.6.25. Not using padlock > > > (i.e. using the i386 assembler version of AES) they just work fine. > > > > Both the padlock version or asm version don't use FP/math registers, right? > > It is interesting that you don't see the problem with asm version > > but see the problem with padlock version. > > > > Does disabling CONFIG_PREEMPT in 2.6.26 change anything? And also, > > can you provide the complete kernel log till the point of failure(oops > > that you sent doesn't have the call trace info) > > BTW, in one of your oops, I see: > > note: cron[1207] exited with preempt_count 268435459 > > I smell some kind of stack corruption here which is corrupting > thread_info (in the above case preempt_count in the thread_info). > I don't think 268435459 is a strong indication of stack corruption: 268435459 == 0x10000003 == PREEMPT_ACTIVE|0x03 Regards, -- Wolfgang Walter Studentenwerk München Anstalt des öffentlichen Rechts -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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