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=-13.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL 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 898A2C43215 for ; Thu, 28 Nov 2019 15:29:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5C7B121787 for ; Thu, 28 Nov 2019 15:29:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="N+fcqeko" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726856AbfK1P3c (ORCPT ); Thu, 28 Nov 2019 10:29:32 -0500 Received: from mail-oi1-f196.google.com ([209.85.167.196]:41687 "EHLO mail-oi1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726756AbfK1P3c (ORCPT ); Thu, 28 Nov 2019 10:29:32 -0500 Received: by mail-oi1-f196.google.com with SMTP id e9so23617539oif.8 for ; Thu, 28 Nov 2019 07:29:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=8jbWiJP8zuPwo1h57bhn9bSCas9rrkjtaMb7mPh1IdA=; b=N+fcqekoOxQDhlpJGKAWkheEt+gN07VZ81/73rXPn1PTzGgsLa3Rcmh9TY+xjk+3Ih qDS65BfoaV4kxITCwQ9aynD1HSih7wmCgb7HKN1o0H2yuxRclj9Ujkcv+DZ9XG9qqLfs gYcHNBi7EmNxtYpBo1DwprVnLxrTtjU6Ewc2Z1bEnBpr9dgcHgNpZdxeFGtuNGpYZLXB hvMrqTF858ayZPTPJw8NVYywiC4NY9H/sx9/Hg0jnT8HOwWZT4svLjw62xcIlt+rlAQX SzBMJVlbbVULZs/zzvLYp6VnC0pl64WDBL9U0f3CF54c3vg/K2F81DElVEZbPOtUntZY PnQQ== 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=8jbWiJP8zuPwo1h57bhn9bSCas9rrkjtaMb7mPh1IdA=; b=hvkBu1bBY+liiTz4n6d6reBVhR3bgFbN+iAbViWp6iFIFFDWS7ynhpUw/q8TSoowh7 gPgRj4s29gM/uCu8W3seLaS5qooiHIaUl1iXaMWgVIIldUJ5xdaVbTUa+FbuI/71UYWE kSbPiAA/X42Pj5Z2YRwh5fxBCMD6kN5S2pP5C7u9ApkxOs9phdlaP2eJjw8sEUD4lgof jRz/RjQGgknGqstgvr6PdWxH9+brrIIM7s8Z3LQ587BX8kmLpYHEBiTSHMeP1E6vK+4/ cEqKrAeRp7aiX/n7QRGx1R3JrHRq2uqPqIaEFnDtGRL/8TCGUtJ86k3LfFrjZ1qYhwRx GC7A== X-Gm-Message-State: APjAAAUldGhKJbX3J8l5CH8G0VWMCDS5TnLGkwJLSNAnGhMrcwkG1pH+ fTOk+g9t1we27A/BlrWAMDBVY4HbWAyHfE8gpkTM/A== X-Google-Smtp-Source: APXvYqwQF8gySZpP3ML3y1V5QupQwMNy5TOx2Z2uDdHPjHuyVgwkY34m3prkUOx4mIROyml0+fITWq8uzCmVDZn6HVs= X-Received: by 2002:aca:d783:: with SMTP id o125mr1403513oig.68.1574954969803; Thu, 28 Nov 2019 07:29:29 -0800 (PST) MIME-Version: 1.0 References: <0000000000009f46d4059863fdea@google.com> <71b86056-944f-c5e1-b4cf-35833a82761c@kernel.dk> In-Reply-To: <71b86056-944f-c5e1-b4cf-35833a82761c@kernel.dk> From: Jann Horn Date: Thu, 28 Nov 2019 16:29:03 +0100 Message-ID: Subject: Re: INFO: trying to register non-static key in io_cqring_overflow_flush To: Jens Axboe , syzbot Cc: io-uring , linux-fsdevel , kernel list , syzkaller-bugs , Al Viro Content-Type: text/plain; charset="UTF-8" Sender: io-uring-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On Thu, Nov 28, 2019 at 4:19 PM Jens Axboe wrote: > On 11/28/19 12:35 AM, syzbot wrote: > > Hello, > > > > syzbot found the following crash on: > > > > HEAD commit: d7688697 Merge tag 'for-linus' of git://git.kernel.org/pub.. > > git tree: upstream > > console output: https://syzkaller.appspot.com/x/log.txt?x=145e5fcee00000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=12f2051e3d8cdb3f > > dashboard link: https://syzkaller.appspot.com/bug?extid=be9e13497969768c0e6e > > compiler: clang version 9.0.0 (/home/glider/llvm/clang > > 80fee25776c2fb61e74c1ecb1a523375c2500b69) > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=146c517ae00000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16550b12e00000 > > > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > > Reported-by: syzbot+be9e13497969768c0e6e@syzkaller.appspotmail.com > > This is the same as: > > syzbot+0d818c0d39399188f393@syzkaller.appspotmail.com syzbot listens to specific commands, see (linked in the report): #syz dup: INFO: trying to register non-static key in io_cqring_ev_posted