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 97EF4C4332F for ; Thu, 22 Dec 2022 05:52:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234956AbiLVFw1 (ORCPT ); Thu, 22 Dec 2022 00:52:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43394 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229601AbiLVFwX (ORCPT ); Thu, 22 Dec 2022 00:52:23 -0500 Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 161ECB32 for ; Wed, 21 Dec 2022 21:52:23 -0800 (PST) Received: by mail-il1-f199.google.com with SMTP id x10-20020a056e021bca00b00302b6c0a683so582631ilv.23 for ; Wed, 21 Dec 2022 21:52:23 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=e0HQGrdqJixrhdOrjNj9VTj7M2P/qvbFLcOLscg9OvY=; b=pUJ5DiFAUPE3uaGHTOhO1Ch9dpR0PAQ8UPXkKFQWJBizqMIaYZN6LSAdHsi7KdEhWN YA1fGx6HVk+ujOkK5MDKqF6UBId6O28VZd4QihFIbGzmyA5pPkF2O951WS7T55uqHT4p B+ejUft/aR4o6GXuap/yopJHRksZMKdXRQMF8Ei+hichc6Y0NFTuIvK2mE5H9vvTACas cvttgFJ8m1DVV7QT49L+/MQiDC89JNHgA6sCO6eoKz2SRf1YxQL1e+giuv6P/YNSVq25 SCDmq+c6gU4z8ZxBkmOiZCx/o8ekYKhgszH4wbcJfY/bmVuVnCKvj+zZ4GjY97Ua1eLI RcRg== X-Gm-Message-State: AFqh2kq34y3Xgqir3IXfRummpvmlt7HEiwRgtBjdm76KVg7imTO9HpDU 06xSGL8bdHw/6NwvvUi9h1MmNH1TB2u0IB2sDR/Di4t3pLD6 X-Google-Smtp-Source: AMrXdXvP6OVOCDeSRwhm8Qt0v/xnV3oCy2eqg9BSp87fwiPJmAjz7Sj0sURWcN5gDtVAxphpoKq/J1+ppbDOW0JX/prJSpEaBtak MIME-Version: 1.0 X-Received: by 2002:a05:6e02:d8f:b0:30b:df09:de12 with SMTP id i15-20020a056e020d8f00b0030bdf09de12mr84538ilj.244.1671688342447; Wed, 21 Dec 2022 21:52:22 -0800 (PST) Date: Wed, 21 Dec 2022 21:52:22 -0800 In-Reply-To: <0021f079-0d7e-0c51-64ad-9d9d17652e88@kernel.dk> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000d3af6205f0644515@google.com> Subject: Re: [syzbot] WARNING in io_sync_cancel 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 but the reproducer is still triggering an issue: INFO: rcu detected stall in corrupted rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P5772 } 2680 jiffies s: 2845 root: 0x0/T rcu: blocking rcu_node structures (internal RCU debug): Tested on: commit: 23fffb2f io_uring/cancel: re-grab ctx mutex after fini.. git tree: git://git.kernel.dk/linux.git io_uring-6.2 console output: https://syzkaller.appspot.com/x/log.txt?x=15bf7bf0480000 kernel config: https://syzkaller.appspot.com/x/.config?x=2edd87fe5cbdf43f dashboard link: https://syzkaller.appspot.com/bug?extid=7df055631cd1be4586fd compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Note: no patches were applied.