From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gnu.wildebeest.org (gnu.wildebeest.org [45.83.234.184]) by sourceware.org (Postfix) with ESMTPS id D99D4385782D for ; Thu, 17 Mar 2022 00:49:47 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org D99D4385782D Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=klomp.org Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=klomp.org Received: from reform (deer0x09.wildebeest.org [172.31.17.139]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by gnu.wildebeest.org (Postfix) with ESMTPSA id BEE6F302FB81; Thu, 17 Mar 2022 01:49:46 +0100 (CET) Received: by reform (Postfix, from userid 1000) id 82A222E8071B; Thu, 17 Mar 2022 01:49:46 +0100 (CET) Date: Thu, 17 Mar 2022 01:49:46 +0100 From: Mark Wielaard To: oss-fuzz@monorail-prod.appspotmail.com Cc: elfutils-devel@sourceware.org, ClusterFuzz-External via monorail Subject: Re: Issue 43505 in oss-fuzz: elfutils:fuzz-dwfl-core: Use-of-uninitialized-value in handle_file_note Message-ID: References: <0=71cc74a7ba1af446b7ed6b9a08b414d9=2c0356afc660f9c3dfa1ade2a69ce6ad=oss-fuzz@monorail-prod.appspotmail.com> <000000000000e577fa05da5f3e74@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <000000000000e577fa05da5f3e74@google.com> X-Spam-Status: No, score=-3.5 required=5.0 tests=BAYES_00, JMQ_SPF_NEUTRAL, KAM_DMARC_STATUS, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: elfutils-devel@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Elfutils-devel mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Mar 2022 00:49:49 -0000 Hi, Does anybody know why/where these message suddenly come from? There have now been multiple today and yesterday. Unfortunately the reply-to address seems to just bounce any of my replies. On Wed, Mar 16, 2022 at 05:38:15PM -0700, ClusterFuzz-External via monorail via Elfutils-devel wrote: > Comment #4 on issue 43505 by ClusterFuzz-External: elfutils:fuzz-dwfl-core: Use-of-uninitialized-value in handle_file_note > https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43505#c4 As one of the comments in this bug report says "it seems MSan doesn't like unions that aren't initialized explicitly". But the backtrace given in the report doesn't seem to match the current elfutils code. So maybe this is against some old elfutils version? Cheers, Mark