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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20130722170338.GA15824@logfs.org>
Date:	Mon, 22 Jul 2013 13:03:38 -0400
From:	Jörn Engel <joern@...fs.org>
To:	Vaughan Cao <vaughan.cao@...cle.com>
Cc:	dgilbert@...erlog.com, JBottomley@...allels.com,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 0/4] [SCSI] sg: fix race condition in sg_open

On Mon, 22 July 2013 12:40:29 +0800, Vaughan Cao wrote:
> 
> 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(-)

Patchset looks good to me, although I didn't test it on hardware yet.
Signed-off-by: Joern Engel <joern@...fs.org>

James, care to pick this up?

Jörn

--
Good warriors cause others to come to them and do not go to others.
-- Sun Tzu
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/