From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pl1-x636.google.com (mail-pl1-x636.google.com [IPv6:2607:f8b0:4864:20::636]) by sourceware.org (Postfix) with ESMTPS id 9AC883858D38 for ; Wed, 1 Feb 2023 06:36:58 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 9AC883858D38 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-pl1-x636.google.com with SMTP id b5so10239135plz.5 for ; Tue, 31 Jan 2023 22:36:58 -0800 (PST) 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:message-id:reply-to; bh=PU2esnKsGWo0uR46wH5ef7WtCFINTkb8kS+QB845LYA=; b=HwOUhVZ8Z2aXJcadZPfFbLErYVpZOQuxaWI5MTp4zVfAkD3oOApdBUsCD4QsNhapdq 6j9qYhyxiGxk2613QxYReLVCKGP0LHZWo5khzceJqCiS/zIlZYKDAoUV8lRmy0lZ1BZk KVPLk9pVN/ZKcyFn5wgpe23GKVUU/B/6/MolwsmXAtt3upkPxynzD5/P/2EeWXzcVAbb iWyMR3N7jHlTgwlEV8dNlzQQCsSoz37svlMAj3lT+Ew3C7FGCILymlXz+pTIyQss4Iar +fHSxrT8XlwVJ0tRKdM62JodaSQ5DKic+n0cTbU9u7pLogprYMYzJ+WkRd1CCH0vb/76 1gpQ== 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:message-id:reply-to; bh=PU2esnKsGWo0uR46wH5ef7WtCFINTkb8kS+QB845LYA=; b=vR5VzFOl9jOSSdVUoINdCdd0LL7HFuNPq3mXOXBanhgXv3lKetQXYZvw1Qj/h7uS8g b0C3eHy3kKpb46D7eEinECLJWDXFV9za56kvM3Uu8G2adF1EMYjMYxrswFaKpOSMobY+ FwCH2E2Ap/CKZ6dsilr+zOi26DJscPaH69G5+EnQKzMJmFqXO+MtKAwhyWc51osYk1ZM mG1JWdY8KgzwOHGyfvCXIfWIpTMZVN/ZycO/OLQz9l4rWIG33qEQ8S6pLIAe8ttllQtl xDShUSwTengjITc7AzPDRFvyHiaJATaOMuWHjUxCrcQRWd5tHal04S4e31ZasHB10hih G8nw== X-Gm-Message-State: AO0yUKV+2xAAKhfIWFt+L0KdJxJ4A7RyWudyqfYQVcHvFHolU/ySlCCm TdswfjUcgIjSnu8HfsAS9sS0vy2dYV4= X-Google-Smtp-Source: AK7set/9bUHUuLgoYHnZw16P/cgm/0msLV4pgv5aJ8QC3SAmQzNVp1xrDS1f+7FoDZsiLMbAyrbOAQ== X-Received: by 2002:a17:902:cecf:b0:196:89bc:70fe with SMTP id d15-20020a170902cecf00b0019689bc70femr2086779plg.34.1675233417499; Tue, 31 Jan 2023 22:36:57 -0800 (PST) Received: from squeak.grove.modra.org ([2406:3400:51d:8cc0:35b4:d041:2beb:f8d7]) by smtp.gmail.com with ESMTPSA id 2-20020a170902c10200b0018099c9618esm10797250pli.231.2023.01.31.22.36.56 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 31 Jan 2023 22:36:56 -0800 (PST) Received: by squeak.grove.modra.org (Postfix, from userid 1000) id 687CC1140841; Wed, 1 Feb 2023 17:06:54 +1030 (ACDT) Date: Wed, 1 Feb 2023 17:06:54 +1030 From: Alan Modra To: binutils@sourceware.org Subject: Recursion in as_info_where Message-ID: MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="cua0SDu25lOytUVR" Content-Disposition: inline X-Spam-Status: No, score=-3035.0 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 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: --cua0SDu25lOytUVR Content-Type: text/plain; charset=us-ascii Content-Disposition: inline This function has a gas_assert, ie. possible call to as_abort, which calls as_report_context, which calls as_info_where. Attached fuzzer testcase managed to trigger a stack overflow. * messages.c (as_info_where): Don't gas_assert. diff --git a/gas/messages.c b/gas/messages.c index 0db075d779c..7c018acf69f 100644 --- a/gas/messages.c +++ b/gas/messages.c @@ -141,8 +141,6 @@ as_info_where (const char *file, unsigned int line, unsigned int indent, va_list args; char buffer[2000]; - gas_assert (file != NULL && line > 0 && indent <= INT_MAX); - va_start (args, format); vsnprintf (buffer, sizeof (buffer), format, args); va_end (args); -- Alan Modra Australia Development Lab, IBM --cua0SDu25lOytUVR Content-Type: application/octet-stream Content-Disposition: attachment; filename=clusterfuzz-testcase-minimized-fuzz_as-5392730034667520 Content-Transfer-Encoding: quoted-printable =2Emacro r=0A=FF=0A.endm=0A#1"=00r=00 --cua0SDu25lOytUVR--