From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756160Ab3GQPcZ (ORCPT ); Wed, 17 Jul 2013 11:32:25 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:27451 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753666Ab3GQPcY (ORCPT ); Wed, 17 Jul 2013 11:32:24 -0400 From: Vaughan Cao To: joern@logfs.org Cc: dgilbert@interlog.com, JBottomley@parallels.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, vaughan.cao@oracle.com Subject: [PATCH v4 0/4] [SCSI] sg: fix race condition in sg_open Date: Wed, 17 Jul 2013 23:34:02 +0800 Message-Id: <1374075246-22923-1-git-send-email-vaughan.cao@oracle.com> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <20130715203730.GA21804@logfs.org> References: <20130715203730.GA21804@logfs.org> X-Source-IP: ucsinet21.oracle.com [156.151.31.93] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org There is a race when open sg with O_EXCL flag. Also a race may happen between sg_open and sg_remove. Changes from v3: * release o_sem in sg_release(), not in sg_remove_sfp(). * not set exclude with sfd_lock held. Vaughan Cao (4): [SCSI] sg: use rwsem to solve race during exclusive open [SCSI] sg: no need sg_open_exclusive_lock [SCSI] sg: checking sdp->detached isn't protected when open [SCSI] sg: push file descriptor list locking down to per-device locking drivers/scsi/sg.c | 186 ++++++++++++++++++++++++++---------------------------- 1 file changed, 88 insertions(+), 98 deletions(-) -- 1.7.11.7