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[2604:1380:4601:e00::3]) by mx.google.com with ESMTPS id kl15-20020a170907994f00b00a457ce3f7afsi4079756ejc.803.2024.03.08.02.34.09 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Mar 2024 02:34:09 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-96837-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3; Authentication-Results: mx.google.com; arc=pass (i=1 spf=pass spfdomain=sina.com); spf=pass (google.com: domain of linux-kernel+bounces-96837-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) smtp.mailfrom="linux-kernel+bounces-96837-linux.lists.archive=gmail.com@vger.kernel.org" Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by am.mirrors.kernel.org (Postfix) with ESMTPS id 4730C1F20FC7 for ; Fri, 8 Mar 2024 10:34:09 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 45A8354FA4; Fri, 8 Mar 2024 10:34:02 +0000 (UTC) Received: from mail115-79.sinamail.sina.com.cn (mail115-79.sinamail.sina.com.cn [218.30.115.79]) (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 5B4FA3FBB6 for ; Fri, 8 Mar 2024 10:33:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=218.30.115.79 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709894041; cv=none; b=uAQ/2jF047PyNfZbJTwh6ipPmCaE9c98S6iTQM0+3ddlo45eI7rxkW1yYexyFZvCmdNFx5pWA9flMq1Gw28mNbAfrbwoHQ26F9u2NuTsjzMiBPNvuXWE8OpmK4BgL7wc/xwhRQrMCVRt+MWmBgFErN1MHO5m/WvMNJbrEtok/fs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709894041; c=relaxed/simple; bh=aX6PYg0PF3r+7Yum+f4L2Mn9y5rDseZ4DOtdqbOQ2ys=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=KwEb/HIrgZEIKq5bUAl6PI0aBnr9O3doyFGOhmFNjE91Awl0D4MLOcc8PYDOIGN1FGVT5U3/Lvkyz/7KB+QCdiCBNS9If0QGzvXwPD3efmZYaQFxgRpL8CacOSIqILYCKBhxnz7P5PcQlAA7MfhNhmkugrx0qWKB+1WCsIXZt94= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sina.com; spf=pass smtp.mailfrom=sina.com; arc=none smtp.client-ip=218.30.115.79 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sina.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sina.com X-SMAIL-HELO: localhost.localdomain Received: from unknown (HELO localhost.localdomain)([113.118.64.186]) by sina.com (10.75.12.45) with ESMTP id 65EAE98800009EC3; Fri, 8 Mar 2024 18:33:47 +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: 54591931457941 X-SMAIL-UIID: 6EEAD8EDB86542B7AF578B9EC0E32228-20240308-183347-1 From: Hillf Danton To: syzbot Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] INFO: rcu detected stall in syscall_exit_to_user_mode (2) Date: Fri, 8 Mar 2024 18:33:36 +0800 Message-Id: <20240308103336.1587-1-hdanton@sina.com> In-Reply-To: <000000000000081ff305f0b14072@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 On Sun, 25 Dec 2022 17:42:37 -0800 > syzbot has found a reproducer for the following issue on: > > HEAD commit: 72a85e2b0a1e Merge tag 'spi-fix-v6.2-rc1' of git://git.ker.. > git tree: upstream > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12569d7f880000 #syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master --- x/drivers/media/rc/imon.c +++ y/drivers/media/rc/imon.c @@ -1758,6 +1758,7 @@ static void usb_rx_callback_intf0(struct switch (urb->status) { case -ENOENT: /* usbcore unlink successful! */ + case -EPROTO: return; case -ESHUTDOWN: /* transport endpoint was shut down */ --