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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 194F3C77B75 for ; Tue, 18 Apr 2023 06:30:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230481AbjDRGaw convert rfc822-to-8bit (ORCPT ); Tue, 18 Apr 2023 02:30:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34416 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229454AbjDRGat (ORCPT ); Tue, 18 Apr 2023 02:30:49 -0400 Received: from lithops.sigma-star.at (lithops.sigma-star.at [195.201.40.130]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D484B119 for ; Mon, 17 Apr 2023 23:30:48 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by lithops.sigma-star.at (Postfix) with ESMTP id 96AFB64551DF; Tue, 18 Apr 2023 08:30:47 +0200 (CEST) Received: from lithops.sigma-star.at ([127.0.0.1]) by localhost (lithops.sigma-star.at [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id CZCQMMmRb5xL; Tue, 18 Apr 2023 08:30:47 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by lithops.sigma-star.at (Postfix) with ESMTP id 3B1826431C28; Tue, 18 Apr 2023 08:30:47 +0200 (CEST) Received: from lithops.sigma-star.at ([127.0.0.1]) by localhost (lithops.sigma-star.at [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id hc7I4qRsRMGG; Tue, 18 Apr 2023 08:30:47 +0200 (CEST) Received: from lithops.sigma-star.at (lithops.sigma-star.at [195.201.40.130]) by lithops.sigma-star.at (Postfix) with ESMTP id 216AA64551DF; Tue, 18 Apr 2023 08:30:47 +0200 (CEST) Date: Tue, 18 Apr 2023 08:30:47 +0200 (CEST) From: Richard Weinberger To: Yu Hao Cc: Miquel Raynal , Vignesh Raghavendra , linux-mtd , linux-kernel Message-ID: <687864524.118195.1681799447034.JavaMail.zimbra@nod.at> In-Reply-To: References: Subject: Re: BUG: divide error in ubi_attach_mtd_dev MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT X-Originating-IP: [195.201.40.130] X-Mailer: Zimbra 8.8.12_GA_3807 (ZimbraWebClient - FF97 (Linux)/8.8.12_GA_3809) Thread-Topic: divide error in ubi_attach_mtd_dev Thread-Index: k4bIGdcIRmBd/MSU/l20Gs+2lMcsjQ== Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Yu Hao, ----- Ursprüngliche Mail ----- > Von: "Yu Hao" >> ubi: mtd0 is already attached to ubi0 >> ubi7: attaching mtd147 >> divide error: 0000 [#1] PREEMPT SMP KASAN >> CPU: 0 PID: 20023 Comm: syz-executor.0 Not tainted 6.2.0 #6 >> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS >> 1.13.0-1ubuntu1.1 04/01/2014 >> RIP: 0010:mtd_div_by_eb include/linux/mtd/mtd.h:580 [inline] >> RIP: 0010:io_init drivers/mtd/ubi/build.c:620 [inline] >> RIP: 0010:ubi_attach_mtd_dev+0x77f/0x2fe0 drivers/mtd/ubi/build.c:955 >> Code: fc ff df 48 c1 ea 03 0f b6 14 02 4c 89 f0 83 e0 07 83 c0 03 38 >> d0 7c 08 84 d2 0f 85 1f 25 00 00 41 8b 4c 24 10 48 89 d8 31 d2 <48> f7 >> f1 48 89 c3 e8 b6 f3 1b fc 48 8d 85 40 17 00 00 48 89 c2 48 >> RSP: 0018:ffffc9000be0fd30 EFLAGS: 00010246 >> RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 >> RDX: 0000000000000000 RSI: ffff888047a49d40 RDI: 0000000000000002 >> RBP: ffff888024e1c000 R08: 0000000000000016 R09: fffff520017c1f47 >> R10: ffffc9000be0fa37 R11: fffff520017c1f46 R12: ffff88806545a000 >> R13: 0000000000000000 R14: ffff88806545a010 R15: 0000000000000007 >> FS: 00007fd45e85c700(0000) GS:ffff88802ca00000(0000) knlGS:0000000000000000 >> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >> CR2: 00007f64aeef53a4 CR3: 000000004f39a000 CR4: 0000000000350ef0 >> Call Trace: >> >> ctrl_cdev_ioctl+0x303/0x3a0 drivers/mtd/ubi/cdev.c:1043 What kind of MTD you attaching? Has it erasesize 0? Thanks, //richard