Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755749AbcJMGDb (ORCPT ); Thu, 13 Oct 2016 02:03:31 -0400 Received: from s3.sipsolutions.net ([5.9.151.49]:48709 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755313AbcJMGDH (ORCPT ); Thu, 13 Oct 2016 02:03:07 -0400 Message-ID: <1476338524.4904.1.camel@sipsolutions.net> Subject: Re: [mac80211] BUG_ON with current -git (4.8.0-11417-g24532f7) From: Johannes Berg To: Andy Lutomirski Cc: Sergey Senozhatsky , Andy Lutomirski , "David S. Miller" , Linux Wireless List , Network Development , "linux-kernel@vger.kernel.org" , Sergey Senozhatsky , "linux-next@vger.kernel.org" , Stephen Rothwell , Herbert Xu Date: Thu, 13 Oct 2016 08:02:04 +0200 In-Reply-To: (sfid-20161013_074011_616875_45F10514) References: <20161010150358.GA514@swordfish> <20161010153050.GA836@swordfish> <1476263106.5271.23.camel@sipsolutions.net> <20161012141245.GA436@swordfish> <1476282127.5271.30.camel@sipsolutions.net> (sfid-20161013_074011_616875_45F10514) Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.20.5-1 Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 728 Lines: 17 On Wed, 2016-10-12 at 22:39 -0700, Andy Lutomirski wrote: > In a pinch, I have these patches sitting around: > > https://git.kernel.org/cgit/linux/kernel/git/luto/linux.git/commit/?h=x86/vmap_stack&id=0a39cfa6fbb5d5635c85253cc7d6b44b54822afd > https://git.kernel.org/cgit/linux/kernel/git/luto/linux.git/commit/?h=x86/vmap_stack&id=bf8cfa200b5a01383ea39fc8ce2f32909767baa8 That truly sounds like something we'd rather avoid in the TX/RX paths though, which should perform well. > I don't like them, though.  I think it's rather silly that we can't > just pass virtual addresses to the crypto code. I don't really understand it either, hence my question about the actual crash. I'll try to reproduce it in a VM. johannes