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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no 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 411B6C49361 for ; Wed, 16 Jun 2021 07:38:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2CE7961055 for ; Wed, 16 Jun 2021 07:38:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231817AbhFPHkk (ORCPT ); Wed, 16 Jun 2021 03:40:40 -0400 Received: from mail-vk1-f172.google.com ([209.85.221.172]:40567 "EHLO mail-vk1-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231187AbhFPHkj (ORCPT ); Wed, 16 Jun 2021 03:40:39 -0400 Received: by mail-vk1-f172.google.com with SMTP id i17so407993vkd.7; Wed, 16 Jun 2021 00:38:33 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=oYkI/zG40URv+m/LERapdYdXE8mdGOgDXjJQ7nWdKJQ=; b=hSydv50Be21Z9io2d5aYTlJC0pqLDajaC4OV/GbBaoVCS69QWl7tBtBg6133ta3HB2 GxMBGue8XramZqlfoFghbKwrW/8RCaqJdOYlz7aVhFEapHoygUkjYHcv5kMGmymiWNCe nMbauQ8ePyF3j7M2nQKgYM0zShlaD0H4XB+yVsZkBUe4kG4EhhgqMECb+X7cPiISqdCm 7tmQkr36MS5Sf73LReF9GJrRprICg0iN9i8nC1oN0ef4buBZBwrvAxS03hHCxM8494RM WzJO8WR2apjyFa7EWztmOmyHGRE8VFrQEHJ7luZYYge1to8dMX+yrWRNjO4REBwqyCOl DGXA== X-Gm-Message-State: AOAM531x5+nuni9NlNByuwomCGd09EM5Ru0B8OttCdFd3nmHKtNJKn6P +ki5u50Dkz2TmT+/SdNA2wJ/PRAcSSTlVrj1m5c= X-Google-Smtp-Source: ABdhPJzufbJykYOmxZN0p1SAxGmJWo5X7VotLxBsWJYFnoUcAIbLyiwJ2blqdHa1Jr10POv3l3B1Oi8N3GGoHXROasQ= X-Received: by 2002:a1f:9505:: with SMTP id x5mr8101727vkd.6.1623829113459; Wed, 16 Jun 2021 00:38:33 -0700 (PDT) MIME-Version: 1.0 References: <87sg1p30a1.fsf@disp2133> <87pmwsytb3.fsf@disp2133> <87sg1lwhvm.fsf@disp2133> <6e47eff8-d0a4-8390-1222-e975bfbf3a65@gmail.com> <924ec53c-2fd9-2e1c-bbb1-3fda49809be4@gmail.com> <87eed4v2dc.fsf@disp2133> <5929e116-fa61-b211-342a-c706dcb834ca@gmail.com> <87fsxjorgs.fsf@disp2133> In-Reply-To: <87fsxjorgs.fsf@disp2133> From: Geert Uytterhoeven Date: Wed, 16 Jun 2021 09:38:22 +0200 Message-ID: Subject: Re: Kernel stack read with PTRACE_EVENT_EXIT and io_uring threads To: "Eric W. Biederman" Cc: Michael Schmitz , Linus Torvalds , linux-arch , Jens Axboe , Oleg Nesterov , Al Viro , Linux Kernel Mailing List , Richard Henderson , Ivan Kokshaysky , Matt Turner , alpha , linux-m68k , Arnd Bergmann , Ley Foon Tan , Tejun Heo , Kees Cook Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Eric, On Tue, Jun 15, 2021 at 9:32 PM Eric W. Biederman wrote: > Do you happen to know if there is userspace that will run > in qemu-system-m68k that can be used for testing? There's a link to an image in Laurent's patch series "[PATCH 0/2] m68k: Add Virtual M68k Machine" https://lore.kernel.org/linux-m68k/20210323221430.3735147-1-laurent@vivier.eu/ Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds