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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9165FC61DA4 for ; Mon, 13 Mar 2023 14:32:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231365AbjCMOc0 (ORCPT ); Mon, 13 Mar 2023 10:32:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43928 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231322AbjCMOcZ (ORCPT ); Mon, 13 Mar 2023 10:32:25 -0400 Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BB5C7580C0 for ; Mon, 13 Mar 2023 07:32:24 -0700 (PDT) Received: by mail-io1-f69.google.com with SMTP id y6-20020a056602120600b0074c87f954bfso6466028iot.4 for ; Mon, 13 Mar 2023 07:32:24 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678717944; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=4y/5zA6M4Bgo32w3DEC2QVqTxoqFR5HvYaARqLXL8ek=; b=IUqdKwKv8Z9gnW10eq6inLObTVGikuOmLs58ZVKclTvgpctl3C2LnatYqH5x9HwOgF tJ7OTmIHXFcBa7k+Azg76MNZttAilhKiU26c1a7r6NVSBn/R5IbfpJ7R4Juw1mAUFBwD TTOXVtwYwiWGEhzopQ2SkwsQmBexGT4ZjtwGFr0DovCfp88QckOSRnD0/YmMrRxUH4yH YQZiAyKg1ZJi3MTJ/x12Lcno7zsnY7CcDeauNsZF+bI8YYIKLL4Say25awSi2Puz3WPH MrP4XqlCQd4RJNC3raeZFbm2l8tdw8DXG7LQSbhx0h/Mr5cBZVmI5VVx9XoOsEUKyJkr MZQQ== X-Gm-Message-State: AO0yUKVtm9yKSgY96QoXwcDA5cEBw2MU+gezXkU+sBdolTwAw4aTqbKF LPLhPpu2pMgjzl3m2THv4MYdRWjsuMCuLqBBt/gOu2cBPPGi X-Google-Smtp-Source: AK7set//Vxwu9cDJinI5+BoatG3+ShJiVgoRfhjdyDSgiMrcH7fhxRJ3a933Uwu++c+91ZnsWuj/l+LRUU8CbGVvI5Y+IF2T/veh MIME-Version: 1.0 X-Received: by 2002:a6b:7902:0:b0:745:70d7:4962 with SMTP id i2-20020a6b7902000000b0074570d74962mr15645557iop.0.1678717944153; Mon, 13 Mar 2023 07:32:24 -0700 (PDT) Date: Mon, 13 Mar 2023 07:32:24 -0700 In-Reply-To: <000000000000f0fb6005f1cfc17f@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000bd527205f6c8fa41@google.com> Subject: Re: [syzbot] [io-uring?] KASAN: use-after-free Read in io_wq_worker_wake From: syzbot To: asml.silence@gmail.com, axboe@kernel.dk, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org syzbot suspects this issue was fixed by commit: commit e6db6f9398dadcbc06318a133d4c44a2d3844e61 Author: Jens Axboe Date: Sun Jan 8 17:39:17 2023 +0000 io_uring/io-wq: only free worker if it was allocated for creation bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=113a76fac80000 start commit: 1fe4fd6f5cad Merge tag 'xfs-6.2-fixes-2' of git://git.kern.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=8b79b14037065d92 dashboard link: https://syzkaller.appspot.com/bug?extid=b3ba2408ce0c74bb9230 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1388e5f2480000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=127f1aa4480000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: io_uring/io-wq: only free worker if it was allocated for creation For information about bisection process see: https://goo.gl/tpsmEJ#bisection