From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vaughan Cao Subject: [PATCH v5 0/4] [SCSI] sg: fix race condition in sg_open Date: Mon, 22 Jul 2013 12:40:29 +0800 Message-ID: <1374468033-8947-1-git-send-email-vaughan.cao@oracle.com> References: <1374075246-22923-1-git-send-email-vaughan.cao@oracle.com> Return-path: In-Reply-To: <1374075246-22923-1-git-send-email-vaughan.cao@oracle.com> Sender: linux-kernel-owner@vger.kernel.org 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 List-Id: linux-scsi@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 v4: * [3/4] use ERR_PTR series instead of adding another parameter in sg_add_sfp * [4/4] fix conflict for cherry-pick from v3. 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 | 178 +++++++++++++++++++++++++----------------------------- 1 file changed, 83 insertions(+), 95 deletions(-) -- 1.7.11.7