From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id C9BBFB6EF7 for ; Fri, 10 Feb 2012 09:45:24 +1100 (EST) Message-ID: <1328827517.3019.0.camel@pasglop> Subject: Re: [PATCH] powerpc: Fix WARN_ON in decrementer_check_overflow From: Benjamin Herrenschmidt To: Hugh Dickins Date: Fri, 10 Feb 2012 09:45:17 +1100 In-Reply-To: References: <1328765653.2903.59.camel@pasglop> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Cc: linuxppc-dev List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Thu, 2012-02-09 at 14:25 -0800, Hugh Dickins wrote: > > Okay, thanks for the update, that's equivalent to the get_cpu_var > plus put_cpu_var patch I had generally been running with successfully. > > (I was not at all confident that it was a sufficient fix, and have > to say "generally" above because one time I got something that looked > like recursive calls overflowing the stack, and IIRC something "irq" > did appear in each frame of the trace. But probably no connection, > never seen again, and I don't recall even which -rc or -next it was.) If you ever see that again, please shoot me the log ! Cheers, Ben.