Re: 2.6.16-mm1 leaks in dvb playback (found)

[Adrian Bridgett <adrian@smop.co.uk>]

On Fri, Mar 31, 2006 at 03:22:35 +0200 (+0200), Andi Kleen wrote:
> On Thu, Mar 30, 2006 at 03:28:21PM -0800, David S. Miller wrote:
> > From: Adrian Bridgett <adrian@smop.co.uk>
> > Date: Fri, 31 Mar 2006 00:11:31 +0100
> > 
> > > Hmm - it looks like it was meant to be reverted in 2.6.16-rc1-mm4,5 FWIW.
> > 
> > So is the current version in Linus's tree causing this problem?

I'm taking 2.6.16(.0) adding -mm1.  When running dvbstream I get
dentry_cache and sock_inode_cache leaking about 4MB/s.

I then revert this ENFILE/EMFILE patch and both leaks stop.

I've just compiled up 2.6.16-git18 and that leaks in an identical
manner.   I'm suprised no-one else has seen it, so I've been putting
it down to the specific hardware (dvb-usb-vp7045), but then I saw that
it was a bad memory leak and then that 2.6.16 was fine and finally
started trying to isolate the patch that broke it for me (tm).

Maybe it's just exposed a bug in dvb-usb-vp7045, but given that it
appears to add a sock_alloc_fd without any matching deallocate code
AFAICT...

Adrian