linux-kernel - [PATCH v5 0/4] [SCSI] sg: fix race condition in sg

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Message-Id: <1374468033-8947-1-git-send-email-vaughan.cao@oracle.com>
Date:	Mon, 22 Jul 2013 12:40:29 +0800
From:	Vaughan Cao <vaughan.cao@...cle.com>
To:	joern@...fs.org
Cc:	dgilbert@...erlog.com, JBottomley@...allels.com,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
	vaughan.cao@...cle.com
Subject: [PATCH v5 0/4] [SCSI] sg: fix race condition in sg_open

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

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