From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C04BAC282CB for ; Tue, 5 Feb 2019 18:27:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 97343217F9 for ; Tue, 5 Feb 2019 18:27:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549391279; bh=lVqm44pg+mzYHX2t/eEJm9JShaKeTb6giogUZD2+gmo=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=qb/tEfC9Id9NwmAt1cFZXwJs7ngYDkuW+aiPWwGG9G+3b2m1tXdCRvvr1N0gLlrST l5hP5PrNRoKP6cIbuaWLcxmQzggY52W+mR4IXuR4sc1/yEkUEwqntodw8VvSYsaG9E IcAWd3fH8HSZqnjEHJZ1DSzBK0oJvneTScFE5IuM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728454AbfBES17 (ORCPT ); Tue, 5 Feb 2019 13:27:59 -0500 Received: from mail.kernel.org ([198.145.29.99]:37280 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727397AbfBES16 (ORCPT ); Tue, 5 Feb 2019 13:27:58 -0500 Received: from localhost (unknown [167.98.85.149]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A88AE20811; Tue, 5 Feb 2019 18:27:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549391278; bh=lVqm44pg+mzYHX2t/eEJm9JShaKeTb6giogUZD2+gmo=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=G6LpEJ4JDRA892bvyQh1/zdrhhsWdoOQbVmNt+wsFLKfwOVBIl8TVPMd6cjlTQ4qz kbMXdl8sF7vS61Jh+CgNJ9AEzfTKPvihpFqx4DnlGkAsz3Q+3K6ZqOhrgenvzv3p5k LSRNkljtnGdE/PVaoL89BIcfuPZ58fsspQcLCnLE= Date: Tue, 5 Feb 2019 19:27:55 +0100 From: Greg KH To: Frank Wunderlich Cc: stable@vger.kernel.org Subject: Re: [BUG] 4.14.95 panic in kmem_cache_alloc / build_skb Message-ID: <20190205182755.GD20886@kroah.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.11.3 (2019-02-01) Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Tue, Feb 05, 2019 at 04:02:50PM +0100, Frank Wunderlich wrote: > Hi, > > i've noticed panics on my bananapi-r2 with kernel 4.14.95, but can't > locate them in detail...all is pointing to kmem_cache_alloc and > build_skb, but over different ways. You should try to see if this happens for 4.19, or best yet, 4.20 or 5.0-rc. If so, then ask about this on the networking mailing list, nothing we can do here about that. And, if it does work properly, and you do find an easy reproducer, try using 'git bisect' to find the fix and let us know would be great. thanks, greg k-h