From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pj1-x1034.google.com (mail-pj1-x1034.google.com [IPv6:2607:f8b0:4864:20::1034]) by sourceware.org (Postfix) with ESMTPS id 515E0385C419 for ; Wed, 14 Sep 2022 00:41:18 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 515E0385C419 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-pj1-x1034.google.com with SMTP id q9-20020a17090a178900b0020265d92ae3so17223384pja.5 for ; Tue, 13 Sep 2022 17:41:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-disposition:mime-version:message-id:subject:to:from:date :from:to:cc:subject:date; bh=sINZme22IsSBlu192iR8+CtRchD4UbVLocMlhd/jpQo=; b=c3OMVrJMsW8/+cTe4UsNCIxSI+hE6Qt4ZxdZ8Vpy+uh0AhiVt56aGv0iLeZL8F/DhE 1roxDpU+elgNJDTPtyDKp7NfHCPpiHrpB/9Rk/ZwqCEd86k2AENw3iPNSL8nnRFKmmQq EWkFOquMA79dZ5fxz1sdRNegB/CmklSYrwrbTXObzWTrzkkjwzmNd/1zUgpy5qrhyCkA bxSNwnQZutdJWpkNzTpkiwtNneMgT5c+31famBgLnJqzaQZOTIPyJv82hXtzzRBKdJIr UkU613nAHqyctLRr6CbwtphBzhUrI7M8Z5Y/dTdvf/txqAXnfTWzh3RlO6lrFgw0IAbU sDGQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-disposition:mime-version:message-id:subject:to:from:date :x-gm-message-state:from:to:cc:subject:date; bh=sINZme22IsSBlu192iR8+CtRchD4UbVLocMlhd/jpQo=; b=LXgyE70ox3/SdfA/db/7JTUYpRJEeh58FHfclNhv7HD88pPo7BGYLgZNQMDLyDjkAg 094cjUdq/tku+6W7XcRmzZgTpaib4Jt1Bj3u25R+LZhTlIiRQTH4rzrR1oGjgIbS1VZF cPHhue8m4fYcrDIIOuOA0n8XQ1iGEf0xaEaDZpWatE9NSz+ny58bM+tKU/FxXYEfFXUf urLZzjqrwL80qFua7KzxsKVAYeBicJQd4i5zu5L/VobxOCzWdwuLihFGbtV5SM/M1Hll xtV9awMpEyj5GAHS4A3i5Qf7bUfBw5fD+jh5u90qUVDCtxivmh57vf1E/ufLAOiXszlK xSlQ== X-Gm-Message-State: ACrzQf3Qhbq8QlYrOAvBkD0MKzgXrSOEbWFsoKVwGI/fu+DNSR8n4zGx kar1tp4oSX/Mi0qhVjOXDCPgKRaXiGI= X-Google-Smtp-Source: AMsMyM66osaMJiihcxVfQfBn2wDi9T5ANxWfnKB+dVtQ20Y5p4vAWyNkX3wb20vqw/UMQflhOzuF6Q== X-Received: by 2002:a17:90a:d150:b0:1fd:9336:5db3 with SMTP id t16-20020a17090ad15000b001fd93365db3mr1902431pjw.242.1663116077238; Tue, 13 Sep 2022 17:41:17 -0700 (PDT) Received: from squeak.grove.modra.org (158.106.96.58.static.exetel.com.au. [58.96.106.158]) by smtp.gmail.com with ESMTPSA id o13-20020a17090a4b4d00b001fd76f7a0d1sm7760321pjl.54.2022.09.13.17.41.16 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Sep 2022 17:41:16 -0700 (PDT) Received: by squeak.grove.modra.org (Postfix, from userid 1000) id 36BE61142502; Wed, 14 Sep 2022 10:11:14 +0930 (ACST) Date: Wed, 14 Sep 2022 10:11:14 +0930 From: Alan Modra To: binutils@sourceware.org Subject: ubsan: som_is_space null dereference Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Spam-Status: No, score=-3036.5 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,GIT_PATCH_0,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On objcopy of fuzzed file. * som.c (som_write_fixups): Exit loop if space sections all processed. diff --git a/bfd/som.c b/bfd/som.c index c22f13b5a4c..38c574a97c8 100644 --- a/bfd/som.c +++ b/bfd/som.c @@ -2933,8 +2933,10 @@ som_write_fixups (bfd *abfd, asection *subsection; /* Find a space. */ - while (!som_is_space (section)) + while (section && !som_is_space (section)) section = section->next; + if (!section) + break; /* Now iterate through each of its subspaces. */ for (subsection = abfd->sections; -- Alan Modra Australia Development Lab, IBM