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 X-Spam-Level: X-Spam-Status: No, score=-4.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1485EC10F11 for ; Wed, 10 Apr 2019 11:05:54 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id CF7A8218D2 for ; Wed, 10 Apr 2019 11:05:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CF7A8218D2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linutronix.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 74B626B027D; Wed, 10 Apr 2019 07:05:53 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 6AE5D6B027E; Wed, 10 Apr 2019 07:05:53 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5790D6B027F; Wed, 10 Apr 2019 07:05:53 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from mail-wr1-f70.google.com (mail-wr1-f70.google.com [209.85.221.70]) by kanga.kvack.org (Postfix) with ESMTP id 1CE196B027D for ; Wed, 10 Apr 2019 07:05:53 -0400 (EDT) Received: by mail-wr1-f70.google.com with SMTP id n6so1213588wrm.2 for ; Wed, 10 Apr 2019 04:05:53 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-original-authentication-results:x-gm-message-state:message-id :user-agent:date:from:to:cc:subject:references:mime-version; bh=LcmKUenQqDu1wL4NqSu9omBnmY3a5jcRvDfJiOhPcms=; b=lmNGTS6wTV+ZK/vugvqFrlQmNUSOwWqE5TZ/pSsV1H/cTFo1EeIsPdYVQvc4ciX64W XhFE5deNwEhXwYaiASa5wcY2ohSOyM7fPuvsP0qdYePkddF/R7XmJsIALLkg6Bv9ny+N uNlMyfP4vvUVZfPtvXffVZQcYyRrnoIop7H9nleJkB2MBK+e0fm1hlJDKRE8anUL+KtI o54uxTtgSCK8R2sF51EPY0MXVqhwAeRs/1AVoLnqhL8mkDt8tDToy36jfXWWrzrx4tou bx3P1lUWUTXOmSepc7Txugzaig6HCFU68jKHN7yBKwSXMa3p7x2nQwSvTW2qmhzt1+6d lrjQ== X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of tglx@linutronix.de designates 2a01:7a0:2:106d:700::1 as permitted sender) smtp.mailfrom=tglx@linutronix.de X-Gm-Message-State: APjAAAWsOcO0lHlIk+Q4h7Tta54K3kO8ZH7ewevpJ+Vb0jFo7afAzVhd CilM4w6d7r2dn8P3nXkR+LTWkE1ugq5uxSM26oQvq4QcCXzerQ3uvxLt0VErvMn3BfwI5QgTCdf KzUg4eSc3f1RuAeoBSCwZshlEE90IxKVHPBON78IQ2eaVXlg617KORUzj6JfDmMhHUg== X-Received: by 2002:a1c:c504:: with SMTP id v4mr2487089wmf.45.1554894352669; Wed, 10 Apr 2019 04:05:52 -0700 (PDT) X-Google-Smtp-Source: APXvYqxBVz4D/zQnRqhy7GHrcF6wvvDwXUwPlIGxRn8c6I3g3uRGh2jFgP2p/8a/t37IxvpH3kpe X-Received: by 2002:a1c:c504:: with SMTP id v4mr2487025wmf.45.1554894351734; Wed, 10 Apr 2019 04:05:51 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1554894351; cv=none; d=google.com; s=arc-20160816; b=ib+DIBfcAllOT0fc7ab7ti5pr0fWx2DeMiZOtl1flJwKnswVG2AbdvYSUzNAZewykn IEDHFJ2BreG+tAkdPrGNJmUNaN5wnBW4nKWJkI473/fxZAY6iISVCWp8Dequ4YS6J2Hl tiZiXOr8c1PobHQYm9JYI51h9gzYN4Rjwqq+CkHGBbjx60VHzEV7Ksy3B+cuSx95qOmC bpe6DNVtoKp9q5jU6HcSjdbnfhBTmDd9gdWusbdFa7dwhFcEWdh4qubmZOYObkYOr4P5 pudPbbDBvilKFuhBwxpI8ulimLYfjxYWuSBmYvb5gVhKc12we0k6kohUjKHCz19CH/Df HvVw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:references:subject:cc:to:from:date:user-agent :message-id; bh=LcmKUenQqDu1wL4NqSu9omBnmY3a5jcRvDfJiOhPcms=; b=AKLNCXx+qV6HmUYLSjequ6lS+jc5QInx0VvOE61X/hIYQTf1IWOV2KZiih5CydfzfC 5Aq/p+oJ2UnuDCM4m8r+0Krudf/bFU20dIsVr67/8JhlDXDBELEa9hrK7cQZWthfQTqn Av0yPctu8cSCrd+ClYXZ69PqeotbpBidhJd4WJDuf6Hp4k5HlKrnDgYav3UI6B89GsUk BbuP3ua1/mlG8SD75/aOJKFetBOOdTkST+kBOULIPRmXEkWlCAfD7bHpq6PSWHVQeNQa eVvAXuRNBaZnGZtRRUj7kv44MWv1ROPHAEpU+wusSQPIlDhpydLhF9IjcU8EECqPBXfd dEVA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of tglx@linutronix.de designates 2a01:7a0:2:106d:700::1 as permitted sender) smtp.mailfrom=tglx@linutronix.de Received: from Galois.linutronix.de (Galois.linutronix.de. [2a01:7a0:2:106d:700::1]) by mx.google.com with ESMTPS id 67si1224663wma.59.2019.04.10.04.05.51 for (version=TLS1_2 cipher=AES128-SHA bits=128/128); Wed, 10 Apr 2019 04:05:51 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of tglx@linutronix.de designates 2a01:7a0:2:106d:700::1 as permitted sender) client-ip=2a01:7a0:2:106d:700::1; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of tglx@linutronix.de designates 2a01:7a0:2:106d:700::1 as permitted sender) smtp.mailfrom=tglx@linutronix.de Received: from localhost ([127.0.0.1] helo=nanos.tec.linutronix.de) by Galois.linutronix.de with esmtp (Exim 4.80) (envelope-from ) id 1hEB31-00054r-7s; Wed, 10 Apr 2019 13:05:43 +0200 Message-Id: <20190410103644.750219625@linutronix.de> User-Agent: quilt/0.65 Date: Wed, 10 Apr 2019 12:28:07 +0200 From: Thomas Gleixner To: LKML Cc: Josh Poimboeuf , x86@kernel.org, Andy Lutomirski , Steven Rostedt , Alexander Potapenko , Andrey Ryabinin , kasan-dev@googlegroups.com, Dmitry Vyukov , linux-mm@kvack.org Subject: [RFC patch 13/41] mm/kasan: Remove the ULONG_MAX stack trace hackery References: <20190410102754.387743324@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: No architecture terminates the stack trace with ULONG_MAX anymore. Remove the cruft. Signed-off-by: Thomas Gleixner Cc: Andrey Ryabinin Cc: Alexander Potapenko Cc: kasan-dev@googlegroups.com Cc: Dmitry Vyukov Cc: linux-mm@kvack.org --- mm/kasan/common.c | 3 --- 1 file changed, 3 deletions(-) --- a/mm/kasan/common.c +++ b/mm/kasan/common.c @@ -74,9 +74,6 @@ static inline depot_stack_handle_t save_ save_stack_trace(&trace); filter_irq_stacks(&trace); - if (trace.nr_entries != 0 && - trace.entries[trace.nr_entries-1] == ULONG_MAX) - trace.nr_entries--; return depot_save_stack(&trace, flags); }