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 6019CC001DE for ; Mon, 31 Jul 2023 05:35:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229697AbjGaFfU (ORCPT ); Mon, 31 Jul 2023 01:35:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53632 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229379AbjGaFfS (ORCPT ); Mon, 31 Jul 2023 01:35:18 -0400 Received: from lithops.sigma-star.at (lithops.sigma-star.at [195.201.40.130]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F1685E68 for ; Sun, 30 Jul 2023 22:35:17 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by lithops.sigma-star.at (Postfix) with ESMTP id A6AC663577C9; Mon, 31 Jul 2023 07:35:16 +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 pTbDYCOnqcdV; Mon, 31 Jul 2023 07:35:16 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by lithops.sigma-star.at (Postfix) with ESMTP id E316563577D6; Mon, 31 Jul 2023 07:35:15 +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 ko5M-Phjxetu; Mon, 31 Jul 2023 07:35:15 +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 C36D463577D2; Mon, 31 Jul 2023 07:35:15 +0200 (CEST) Date: Mon, 31 Jul 2023 07:35:15 +0200 (CEST) From: Richard Weinberger To: Zheng Zhang Cc: Miquel Raynal , Vignesh Raghavendra , linux-mtd , linux-kernel , Alexander Usyskin , Tomas Winkler , Vitaly Lubart , Andy Shevchenko , Zhang Xiaoxu Message-ID: <89021294.889167.1690781715755.JavaMail.zimbra@nod.at> In-Reply-To: References: Subject: Re: kernel BUG in __put_mtd_device MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="=_b2bd5636-d995-489c-84f3-d4166a52e21a" 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: kernel BUG in __put_mtd_device Thread-Index: MyPHGhemzXVOZwCsKF0hh/E7PKqyMg== Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=_b2bd5636-d995-489c-84f3-d4166a52e21a Content-Type: multipart/related; boundary="=_e19688a5-13ed-4a0f-934a-e6585a776a5e" --=_e19688a5-13ed-4a0f-934a-e6585a776a5e Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable ----- Urspr=C3=BCngliche Mail ----- > Von: "Zheng Zhang" > An: "Miquel Raynal" , "richard" , "Vignesh Raghavendra" , > "linux-mtd" , "linux-kernel" > Gesendet: Montag, 31. Juli 2023 01:27:09 > Betreff: kernel BUG in __put_mtd_device > Miquel, Richard, Vignesh and to whom it may concern: >=20 > Hello! We have found a bug in MTD driver in the Linux kernel version 6.2.= 0 > by Syzkaller with our own templates. > It's triggered for multiple times. Unfortunately, it doesn't generate a > reproducer. > Attached is the report, log generated by syzkaller. > Please let me know if there is any additional information that I can > provide to help debug this issue. Isn't this related to "[PATCH] mtd: fix use-after-free in mtd release"? Thanks, //richard --=_e19688a5-13ed-4a0f-934a-e6585a776a5e-- --=_b2bd5636-d995-489c-84f3-d4166a52e21a--