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Mon, 15 Feb 2021 11:59:36 +0000 Received: from PA4PR08MB6320.eurprd08.prod.outlook.com ([fe80::60f0:3773:69b8:e336]) by PA4PR08MB6320.eurprd08.prod.outlook.com ([fe80::60f0:3773:69b8:e336%2]) with mapi id 15.20.3846.042; Mon, 15 Feb 2021 11:59:36 +0000 To: libc-alpha@sourceware.org Subject: [PATCH 05/15] elf: Fix a DTV setup issue [BZ #27136] Date: Mon, 15 Feb 2021 11:59:29 +0000 Message-Id: <49bb4560b2afb4174c7086e24b0fb7be9d73ab5d.1613390045.git.szabolcs.nagy@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: X-Originating-IP: [217.140.106.49] X-ClientProxiedBy: LO2P123CA0106.GBRP123.PROD.OUTLOOK.COM (2603:10a6:600:139::21) To PA4PR08MB6320.eurprd08.prod.outlook.com (2603:10a6:102:e5::9) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (217.140.106.49) by LO2P123CA0106.GBRP123.PROD.OUTLOOK.COM (2603:10a6:600:139::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3846.38 via Frontend Transport; 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The bug is observable if the last module has modid == 64 and its generation is same or less than the max generation of the previous modules. Then dtv[0].counter implies dtv[64] is initialized but it isn't. Fixes bug 27136. Reviewed-by: Adhemerval Zanella --- elf/dl-tls.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/elf/dl-tls.c b/elf/dl-tls.c index dd76829e74..79b93ad91b 100644 --- a/elf/dl-tls.c +++ b/elf/dl-tls.c @@ -590,7 +590,7 @@ _dl_allocate_tls_init (void *result) } total += cnt; - if (total >= GL(dl_tls_max_dtv_idx)) + if (total > GL(dl_tls_max_dtv_idx)) break; listp = listp->next;