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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id D5C22C433F5 for ; Sun, 20 Mar 2022 21:09:49 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 35CCF6B0073; Sun, 20 Mar 2022 17:09:49 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 30C8E6B0074; Sun, 20 Mar 2022 17:09:49 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 15E986B0075; Sun, 20 Mar 2022 17:09:49 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.hostedemail.com [64.99.140.27]) by kanga.kvack.org (Postfix) with ESMTP id 0868E6B0073 for ; Sun, 20 Mar 2022 17:09:49 -0400 (EDT) Received: from smtpin06.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay13.hostedemail.com (Postfix) with ESMTP id CFA3060CA7 for ; Sun, 20 Mar 2022 21:09:48 +0000 (UTC) X-FDA: 79266006456.06.65BFADE Received: from mail-il1-f171.google.com (mail-il1-f171.google.com [209.85.166.171]) by imf05.hostedemail.com (Postfix) with ESMTP id 63CC0100017 for ; Sun, 20 Mar 2022 21:09:48 +0000 (UTC) Received: by mail-il1-f171.google.com with SMTP id r2so9269789ilh.0 for ; Sun, 20 Mar 2022 14:09:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=3yhe1yZzGEpebfSEI4NmtuOUmADVwotj/x5O7U8D/9Y=; b=pUR9BPsXnC/s1tR3UVEal3RV8LChzsf1b1v9T9WywlfOCsYkMrsSY+8c44AWBGWRLf j2q+DKY+2f3NmkcWerih3TRQlbTxsqu4iaIKNjWDiuIcJBjXlwZUyWwHuxc7wpmItisT FO/6cEVsAZAs1oJbhpq/tBeSWy7DcQk9CXx3IOsxGziPWQrI7Uqgxtq1o1pNUgQBxPuV hLW4+sBJIL+uzsGplKp2LvwhegquH9PlD81VtV/boIomK/1LFEoBOTVy3upOOC4JrG64 j+B6amMkJ/FjVm1mMMy4DxE32hMURAJo9Y8ObXkQDKpfgW3yLP1II5YTMFhLkbGycQEb fmWw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=3yhe1yZzGEpebfSEI4NmtuOUmADVwotj/x5O7U8D/9Y=; b=rhrTwWoqbfjcMqrp5+/UHN5iInsL4jmznRkt2H2WJ/crHUX75q3LopRISiypqzBVry Ux2kEsxmF0yQe7NM3FFDeCwWFgI58Od6wo6gWek6uFvljgehHXmbE2mEOLSynH+oztsU SRz7NbkjfO6S1+2OoY+Pav0U9s4ZH9iSshIQwD1FK0EZNDr7m6HxcCN2cSVjK1MDJxp2 Pm9K4Gx4X+hYt9lttSNQsqOm84O1KiX2lM0s13Mwe42XQ2jwU9/1RauAPnihVOFT4yHU pXgQMP+zdMm50jV/LMtriHdUCOM6+SYZKg/avH1uT18EsvbNXHSiwTAUkeTvXxkERiRE 4C4g== X-Gm-Message-State: AOAM531yR+k919LPjvGnrnlp3mfi8zE4JSVBFyIkztL+15PpAynhy22+ 6bZum/++pLo0fgU7hRJJwzx4H/bgpgzoGlNKMsY= X-Google-Smtp-Source: ABdhPJwIoODScvpi9PY+6LRF4Xwic1LYWBkU/8s3NZ0lS1WTTcxw7GTnajy3EaHxusV+xoc1fpOVQ/rAbY8fISKENvM= X-Received: by 2002:a05:6e02:1a4c:b0:2c7:c6fc:79f4 with SMTP id u12-20020a056e021a4c00b002c7c6fc79f4mr8215769ilv.235.1647810587864; Sun, 20 Mar 2022 14:09:47 -0700 (PDT) MIME-Version: 1.0 References: <57133fafc4d74377a4a08d98e276d58fe4a127dc.1647115974.git.andreyknvl@google.com> In-Reply-To: From: Andrey Konovalov Date: Sun, 20 Mar 2022 22:09:37 +0100 Message-ID: Subject: Re: [PATCH] kasan, scs: collect stack traces from shadow stack To: Dmitry Vyukov Cc: andrey.konovalov@linux.dev, Marco Elver , Alexander Potapenko , Andrew Morton , Andrey Ryabinin , kasan-dev , Vincenzo Frascino , Catalin Marinas , Will Deacon , Mark Rutland , Sami Tolvanen , Peter Collingbourne , Evgenii Stepanov , Linux Memory Management List , LKML , Andrey Konovalov Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 63CC0100017 X-Stat-Signature: pcqgw4yhtxpwazzokberq8bacsza8mau X-Rspam-User: Authentication-Results: imf05.hostedemail.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=pUR9BPsX; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (imf05.hostedemail.com: domain of andreyknvl@gmail.com designates 209.85.166.171 as permitted sender) smtp.mailfrom=andreyknvl@gmail.com X-Rspamd-Server: rspam02 X-HE-Tag: 1647810588-916356 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: On Mon, Mar 14, 2022 at 8:17 AM Dmitry Vyukov wrote: > > > +static unsigned int save_shadow_stack(unsigned long *entries, > > + unsigned int nr_entries) > > +{ > > + unsigned long *scs_sp = task_scs_sp(current); > > + unsigned long *scs_base = task_scs(current); > > Just to double-check: interrupt frames are also appended to the the > current task buffer, right? Looked into this and found a few issues, will fix in v2. Interrupt frames will be collected then.