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From: Adrian Bridgett <adrian@smop.co.uk>
To: Andrew Morton <akpm@osdl.org>,
	linux-kernel@vger.kernel.org,
	"David S. Miller" <davem@davemloft.net>, Andi Kleen <ak@muc.de>
Subject: Re: 2.6.16-mm1 leaks in dvb playback (found)
Date: Thu, 30 Mar 2006 23:58:30 +0100	[thread overview]
Message-ID: <20060330225830.GA24009@smop.co.uk> (raw)
In-Reply-To: <20060330004518.GA23404@smop.co.uk>

What I thought was just one patch was actually two and it was the
other patch causing the problem - "Do not lose accepted socket when
-ENFILE/-EMFILE".

Most of the patch seems to be just a restructuring - I guess that
leaves the sys_accept changes that are leaking the memory. 

I've no idea how the code is supposed to work, so large rocks of salt
required :-)  The code now does a sock_alloc_fd, and the error cases
now do a "put_filp" and "put_unused_fd" if the alloc succeeded.
However in the normal case, nothing gets freed (I guess that's the
memory leak).  OTOH the description of the patch is:

 "Try to allocate the struct file and an unused file
 descriptor before we try to pull a newly accepted
 socket out of the protocol layer."

http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=39d8c1b6fbaeb8d6adec4a8c08365cc9eaca6ae4

Cheers,

Adrian

  reply	other threads:[~2006-03-30 22:58 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-03-26 21:15 2.6.16-mm1 leaks in dvb playback Adrian Bridgett
2006-03-28  1:23 ` Andrew Morton
2006-03-28  7:02   ` adrian
2006-03-28  7:16     ` Andrew Morton
2006-03-29 23:37       ` adrian
2006-03-30  0:06         ` Andrew Morton
2006-03-30  0:45           ` Adrian Bridgett
2006-03-30 22:58             ` Adrian Bridgett [this message]
2006-03-30 23:11               ` 2.6.16-mm1 leaks in dvb playback (found) Adrian Bridgett
2006-03-30 23:28                 ` David S. Miller
2006-03-31  1:22                   ` Andi Kleen
2006-03-31  7:28                     ` Adrian Bridgett
2006-03-31  7:48                       ` David S. Miller
2006-03-31  9:54                         ` Adrian Bridgett
2006-03-31 10:07                           ` David S. Miller
2006-03-31 18:47                             ` Adrian Bridgett
2006-03-28  7:23     ` 2.6.16-mm1 leaks in dvb playback adrian

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