linux-kernel - Re: [PATCH 0/4] locks: flock and lease related bugfixes, and remove i

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]

Date:	Tue, 17 Feb 2015 16:10:53 -0500
From:	Jeff Layton <jeff.layton@...marydata.com>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"Kirill A. Shutemov" <kirill@...temov.name>,
	"J. Bruce Fields" <bfields@...ldses.org>,
	Christoph Hellwig <hch@....de>,
	Dave Chinner <david@...morbit.com>,
	Sasha Levin <sasha.levin@...cle.com>
Subject: Re: [PATCH 0/4] locks: flock and lease related bugfixes, and remove
 i_flctx counters

On Tue, 17 Feb 2015 20:20:49 +0000
Al Viro <viro@...IV.linux.org.uk> wrote:

> On Tue, Feb 17, 2015 at 11:55:01AM -0800, Linus Torvalds wrote:
> 
> > Can we get that truncated series tested with some flock test suite? I
> > assume there is *some* filesystem tester that tests some basic flock
> > stuff, even if it clearly didn't catch the race due to the unlock in
> > the middle..
> 
> LTP runltp -f syscalls does cover some of that; BTW, looks like fcntl11,
> fcntl11_64, fcntl21 and fcntl21_64 in there got broken by something already
> merged.  Hadn't don bisect yet, but seeing
>  * NAME
>  *      fcntl11.c
>  *
>  * DESCRIPTION
>  *      Testcase to check locking of regions of a file
>  *
>  * ALGORITHM  
>  *      Test changing lock sections around a write lock
> and
>  * NAME
>  *      fcntl21.c
>  *
>  * DESCRIPTION
>  *      Check locking of regions of a file
>  *
>  * ALGORITHM
>  *      Test changing lock sections around a read lock
> 
> I'd say that file locking merge is most likely suspect...

Almost certainly. I'll take a look.

Thanks,
-- 
Jeff Layton <jeff.layton@...marydata.com>
--
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/