linux-kernel - Re: post 2.6.21 regression in F

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:	Thu, 10 May 2007 15:14:23 -0400
From:	Doug Chapman <doug.chapman@...com>
To:	linux-kernel@...r.kernel.org
Cc:	bfields@...i.umich.edu, hch@...radead.org, doug.chapman@...com
Subject: Re: post 2.6.21 regression in F_GETLK

On Thu, 2007-05-10 at 14:56 -0400, Doug Chapman wrote:
> A recent regression (introduced after 2.6.21) was caught by the LTP test
> fcntl11.  It appears that F_GETLK is not properly checking for existing
> F_RDLCK and allows taking out a write lock.
> 
> This can be demonstrated by either running fcntl11 from the LTP suite or
> I have hacked up a much shorter version which demonstrates the issue and
> am attaching it.
> 

I should add that I have seen this on ia64 and x86_64.  I do not
currently have any 32 bit systems to test on.

- Doug


-
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/