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=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 B141EC2BA2B for ; Sun, 12 Apr 2020 06:22:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6EE86206C3 for ; Sun, 12 Apr 2020 06:22:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="fURbKefq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725873AbgDLGW1 (ORCPT ); Sun, 12 Apr 2020 02:22:27 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:50686 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725832AbgDLGW1 (ORCPT ); Sun, 12 Apr 2020 02:22:27 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: Content-Type:In-Reply-To:MIME-Version:Date:Message-ID:From:References:Cc:To: Subject:Sender:Reply-To:Content-ID:Content-Description; bh=TLR0jG8SVlsNfVKq1lmbl+a1kd+nOtWGR1Y3S14e3zU=; b=fURbKefqdhVksNv5MgH7xKehEI Ze4Gs6y6vAaND0wAkAcy7gaMJI3bjCOxFbtKhfF5MX8Czz8Ps2V9UV6aBPsjM0cdV/+SKSfQggK5l 7f1m0NE1w52sP139N01th+wxHh0UREglhkAw6nI2mjWY8xyhved4u9+cBkem2IYqt5QmGVJeKhuMM uYC8ffPwcaOPxskBUAYCe2+ENHJhk7JRjp82Y3uuKnzr4HeKYZJMbAvZbGxNuKXP4tjdOD3AJ4Rqf PAflLHdmrn6plcA6pIyQUPaPGOGfTi3qhhBQ57hpr3SU/1oCjlfp8ycRxP7iOxEGBXJg482fnP8ky ZoMlPGcQ==; Received: from [2601:1c0:6280:3f0::19c2] by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jNW0a-0002OY-63; Sun, 12 Apr 2020 06:22:20 +0000 Subject: Re: linux-next: Tree for Apr 10 (lib/test_printf.ko) To: Naresh Kamboju Cc: Linus Torvalds , Greg Kroah-Hartman , "Rafael J. Wysocki" , Stephen Rothwell , Linux Next Mailing List , Linux Kernel Mailing List , Rasmus Villemoes , Brendan Higgins , Heikki Krogerus References: <20200410132706.170811b7@canb.auug.org.au> <27c212c4-b522-561d-411c-e74dc0ff0b74@infradead.org> <2b0f5d2e-3fe5-10c9-2a9a-9a0b341a52d5@infradead.org> From: Randy Dunlap Message-ID: Date: Sat, 11 Apr 2020 23:22:15 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-next-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-next@vger.kernel.org On 4/11/20 10:36 PM, Naresh Kamboju wrote: > FYI, > > Is this problem related to, > > Regression reported on Linux next 5.6.0-rc4-next-20200305 on x86_64, > i386, arm and arm64. The steps to reproduce is running kselftests lib > printf.sh test case. > Which is doing modprobe operations. > > BUG: kernel NULL pointer dereference, address: 00 - ida_free+0x76/0x140 > > https://lore.kernel.org/linux-kselftest/CAFd5g46Bwd8HS9-xjHLh_rB59Nfw8iAnM6aFe0QPcveewDUT6g@mail.gmail.com/T/ > Looks similar. Lots of fwnode, software_node, ida stuff there. thanks. -- ~Randy