Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751429AbWICRFz (ORCPT ); Sun, 3 Sep 2006 13:05:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751430AbWICRFz (ORCPT ); Sun, 3 Sep 2006 13:05:55 -0400 Received: from py-out-1112.google.com ([64.233.166.180]:33625 "EHLO py-out-1112.google.com") by vger.kernel.org with ESMTP id S1751429AbWICRFy (ORCPT ); Sun, 3 Sep 2006 13:05:54 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=c9IvHmHGpsP3Qb/csAjmrNuDSdg4fACV2n20dRre03D0MdqQhDovq3QZFeZJCY+4CeU74F459v5oPcpWA1mJEOpfhsXchPEbQbtNwE912EXnFG3x4a1Hslx9C4AkQRq6jArIYmxDGsF+QJV7goibxPtE1+bNIYb1eO0cPEyDFHc= Message-ID: Date: Sun, 3 Sep 2006 10:05:54 -0700 From: "Miles Lane" To: "Ingo Molnar" Subject: Re: 2.6.18-rc5-mm1 + all hotfixes -- BUG: MAX_STACK_TRACE_ENTRIES too low! Cc: "Andrew Morton" , LKML In-Reply-To: <20060903125458.GA21390@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20060903125458.GA21390@elte.hu> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2608 Lines: 74 On 9/3/06, Ingo Molnar wrote: > > * Miles Lane wrote: > > > Sorry Andrew. I don't see clues here to help me target the report to > > a maintainer. I hope this helps. > > > > BUG: MAX_STACK_TRACE_ENTRIES too low! > > turning off the locking correctness validator. > > Miles, could you try the patch below? (Andrew: if this solves Miles' > problem then i think this is v2.6.18 material too. [The other > possibility would be some permanent stack-trace entries leak, in which > case the patch will not help. If that happens then we'll have to debug > this some more.]) > > Ingo > > ----------------> > From: Ingo Molnar > Subject: lockdep: double the number of stack-trace entries > > Miles Lane reported the "BUG: MAX_STACK_TRACE_ENTRIES too low!" message, > which means that during normal use his system produced enough lockdep > events so that the 128-thousand entries stack-trace array got exhausted. > Double the size of the array. > > Signed-off-by: Ingo Molnar > --- > kernel/lockdep_internals.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > Index: linux/kernel/lockdep_internals.h > =================================================================== > --- linux.orig/kernel/lockdep_internals.h > +++ linux/kernel/lockdep_internals.h > @@ -27,7 +27,7 @@ > * Stack-trace: tightly packed array of stack backtrace > * addresses. Protected by the hash_lock. > */ > -#define MAX_STACK_TRACE_ENTRIES 131072UL > +#define MAX_STACK_TRACE_ENTRIES 262144UL > > extern struct list_head all_lock_classes; > > Ingo, there seemed to be a difference between the file you editted and the one in Andrew's tree. I remade you patch so it applies cleanly. I'll test and let you know. One word of caution, I only hit the problem once and I'm not sure how to trigger the condition. I'll do my best. Thanks, Miles --- kernel/lockdep_internals.h~ 2006-09-03 09:59:29.000000000 -0700 +++ kernel/lockdep_internals.h 2006-09-03 10:00:55.000000000 -0700 @@ -27,7 +27,7 @@ * Stack-trace: tightly packed array of stack backtrace * addresses. Protected by the hash_lock. */ -#define MAX_STACK_TRACE_ENTRIES 131072UL +#define MAX_STACK_TRACE_ENTRIES 262144UL extern struct list_head all_lock_classes; -- VGER BF report: H 0.0351707 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/