From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp153-165.sina.com.cn (smtp153-165.sina.com.cn [61.135.153.165]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D60461BF58 for ; Thu, 24 Jul 2025 03:13:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=61.135.153.165 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753326836; cv=none; b=PGoa9fV0OTmlemeSJV7jkMCyReZSCf4mfRmaB4VqtP2gHIkCYA64EpJjThUp9QeVVT/ZHmpQuDL4ysNoG1UzQa8DtkT9wHLyyFAT4xgW6RTvhSOMuiRLbH/+6Qe2tXwfu5BJwqknyLbCQyah6aHYLQEKkU7cdkW4GY1CJ0FvGuU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753326836; c=relaxed/simple; bh=ETaR0jx60+vu0q19/QsOIjM2qNNCIyq7MEvAAPhAASw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=KE77J0tUv3fQaGJDPWAOPbic5+gqRDJy5afUvBB3KwgkqseYf7N5kuNp1rBkBPe3aXj24bFuIo3S6cmOKJhd3gVhJ0T1z5xaS277z02xh+GYmYXgpbjjrUe9iglM3+gdknVFbJ21k2qRI5RgIHt//WHsuk2L58rf0zpnGeNb/JA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sina.com; spf=pass smtp.mailfrom=sina.com; dkim=pass (1024-bit key) header.d=sina.com header.i=@sina.com header.b=PwA/O+oQ; arc=none smtp.client-ip=61.135.153.165 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sina.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sina.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=sina.com header.i=@sina.com header.b="PwA/O+oQ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sina.com; s=201208; t=1753326828; bh=U0N40smuyfMtWvZDfUHYKVkWYhtRfo4i+EstIKfJOJU=; h=From:Subject:Date:Message-ID; b=PwA/O+oQ+LXcyeP3lTN2MdN0BK/YHP6K3ka/vpB2iERU+Pbtrb19nMZDHw4HyD8ST nrGEenWisJ9TUP/KwcXEYbNuqcg23Uy0IC5THIDawbrIajv6NQJio6WDZOb/qbaoIp 0d9/Ml3PkcOOtKjUvnIWsXjXXtCb6pMVVxrr0Ysg= X-SMAIL-HELO: localhost.localdomain Received: from unknown (HELO localhost.localdomain)([114.249.58.236]) by sina.com (10.54.253.32) with ESMTP id 6881A4E600001E91; Thu, 24 Jul 2025 11:13:44 +0800 (CST) X-Sender: hdanton@sina.com X-Auth-ID: hdanton@sina.com Authentication-Results: sina.com; spf=none smtp.mailfrom=hdanton@sina.com; dkim=none header.i=none; dmarc=none action=none header.from=hdanton@sina.com X-SMAIL-MID: 973164457072 X-SMAIL-UIID: 5A544BCDE61D444382784B8DBBC1B04A-20250724-111344-1 From: Hillf Danton To: syzbot Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [input?] [usb?] [io-uring?] INFO: task hung in io_wq_put_and_exit (5) Date: Thu, 24 Jul 2025 11:13:31 +0800 Message-ID: <20250724031332.2898-1-hdanton@sina.com> In-Reply-To: <6880f54c.050a0220.248954.0000.GAE@google.com> References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit > Date: Wed, 23 Jul 2025 07:44:28 -0700 [thread overview] > Hello, > > syzbot found the following issue on: > > HEAD commit: bf61759db409 Merge tag 'sched_ext-for-6.16-rc6-fixes' of g.. > git tree: upstream > console+strace: https://syzkaller.appspot.com/x/log.txt?x=12b877d4580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=415e83411fefd73f > dashboard link: https://syzkaller.appspot.com/bug?extid=e328767eafd849df0a78 > compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=110b938c580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1622a38c580000 #syz test --- x/io_uring/io-wq.c +++ y/io_uring/io-wq.c @@ -954,7 +954,7 @@ static bool io_wq_worker_wake(struct io_ { __set_notify_signal(worker->task); wake_up_process(worker->task); - return false; + return true; } static void io_run_cancel(struct io_wq_work *work, struct io_wq *wq) --