From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: 3.2.8/amd64 full interrupt hangs and deadlocks under big network copies (page allocation failure) Date: Wed, 11 Apr 2012 07:43:00 +0200 Message-ID: <1334122980.5300.2154.camel@edumazet-glaptop> References: <20120409.143710.879746943062854492.davem@davemloft.net> <4F83316F.20504@lwfinger.net> <1333998672.3007.245.camel@edumazet-glaptop> <20120409.153452.1284163346306246866.davem@davemloft.net> <1334030180.13293.98.camel@edumazet-glaptop> <20120410051127.GA32048@merlins.org> <1334038263.2907.1.camel@edumazet-glaptop> <20120411052733.GA17352@merlins.org> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: David Miller , Larry.Finger-tQ5ms3gMjBLk1uMJSBkQmQ@public.gmane.org, bhutchings-s/n/eUQHGBpZroRs9YW3xA@public.gmane.org, linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Marc MERLIN Return-path: In-Reply-To: <20120411052733.GA17352-xnduUnryOU1AfugRpC6u6w@public.gmane.org> Sender: linux-wireless-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.org On Tue, 2012-04-10 at 22:27 -0700, Marc MERLIN wrote: > On Tue, Apr 10, 2012 at 08:11:03AM +0200, Eric Dumazet wrote: > > Please try following patch, as it solved the problem for me (no more > > order-1 allocations in tx path) > > I applied our patch to 3.3.1 and cannot reproduce the problem anymore. > > I'll leave a big wireless copy running overnight just in case, but I think > you fixed it. > > Thanks much, > Marc Thanks Marc for bringing this issue. I have a lenovo T420s laptop and could debug the thing pretty fast. I'll send two official patches. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html