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 156F4C433F5 for ; Wed, 23 Mar 2022 05:00:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241804AbiCWFBn (ORCPT ); Wed, 23 Mar 2022 01:01:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57024 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229696AbiCWFBi (ORCPT ); Wed, 23 Mar 2022 01:01:38 -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 4FA327091C for ; Tue, 22 Mar 2022 22:00:09 -0700 (PDT) Received: by mail-io1-f69.google.com with SMTP id i19-20020a5d9353000000b006495ab76af6so388308ioo.0 for ; Tue, 22 Mar 2022 22:00:09 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=6oYDZPp0LBPJzY6rTyL8BNLjnvNtQMaWxnBgcKEox94=; b=QzkbIPVYunMCsitgCBR6Q/5SpSsa4YpR4Biqno4JzEpNcm+/mM3d0KOqhE+s/xtbVr gf5PFM35MGFLLf0H1yE4XRnct2tgo0QyaYvfWic+2QxfRdrY8kiye71DzOBqXr3rNGMv NdaDB86lhIxbWYgGAUybxtL4kH15cJqJB8rKnAEEYdyoKkpgYiqCscWbVfi+R/nhJznr ostIfw3DIitriW4SSmgSByiS4wQin9g5Y57YsbMJ/KaeAV9InCI7ZPwaB7bvcsdeY9t5 BhobM0z0TfLyQynFmx19aIj1LoAUP2DFbTid1af2RBH17ixEdL1va9LuFmleBP5GXM45 yxZw== X-Gm-Message-State: AOAM533a7AscTVvwqiZd7WeaQ01lnTWxqBPahqxdhVFlRoB5WkEQBtDC WcqqDCvHZeQrxg0xJXY13Q/OE25KUCG34rlNESImmZuU4ot6 X-Google-Smtp-Source: ABdhPJywpzb3LdIQOh5rVskDVLgV8tk+mcgnOSyT+AEYgYLttX0csyUGHT+zmnwungj8w2LzV7rYZny3xppw34szwOommpo4bzx2 MIME-Version: 1.0 X-Received: by 2002:a05:6638:3052:b0:317:79e1:8b7f with SMTP id u18-20020a056638305200b0031779e18b7fmr15107849jak.239.1648011608670; Tue, 22 Mar 2022 22:00:08 -0700 (PDT) Date: Tue, 22 Mar 2022 22:00:08 -0700 In-Reply-To: <64edb9d0-859d-c230-edc6-fba0f8a46b98@kernel.dk> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000085454a05dadb9acd@google.com> Subject: Re: [syzbot] KASAN: use-after-free Read in io_poll_remove_entries 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: linux-kernel@vger.kernel.org Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-and-tested-by: syzbot+cd301bb6523ea8cc8ca2@syzkaller.appspotmail.com Tested on: commit: 7d58de1a io_uring: don't recycle provided buffer if pu.. git tree: git://git.kernel.dk/linux-block for-5.18/io_uring kernel config: https://syzkaller.appspot.com/x/.config?x=198493467201ec16 dashboard link: https://syzkaller.appspot.com/bug?extid=cd301bb6523ea8cc8ca2 compiler: Debian clang version 11.0.1-2, GNU ld (GNU Binutils for Debian) 2.35.2 Note: no patches were applied. Note: testing is done by a robot and is best-effort only.