Re: 2.6.16-mm1 leaks in dvb playback

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

On Mon, Mar 27, 2006 at 23:16:30 -0800 (-0800), Andrew Morton wrote:
> It's unlikely that the sock_inode_cache leak is related to the dcache leak,
> but we won't know until we know...

Looks like this might be the same issus as "dcache leak in 2.6.16-git8
(II)"...

I think I've found the patch which causes the leak - it was the
"use fget_light() in net/socket.c" patch.   I can't see anything
obviously wrong, although the patch changes the code so that in
sys_sendto and sys_recvfrom it now does a sockfd_put(sock) if the
sock_from_file call fails which didn't use to happen.   That seems to
agree more with other bits of code, but I've no idea what is the right
thing todo.

One item I spotted whilst perusing the code is that in net/core/sock.c
in compat_sock_common_getsockopt, it checks if
sk->sk_prot->compat_setsockopt is NULL before calling
sk->sk_prot->compat_getsockopt (set vs get).

I'll try and confirm tomorrow with a nice fresh build.   The command
I'm using to test is "dvbstream -f 650166.670 -v 570 -a 571 -o >
/dev/null" 

Thanks,

Adrian