From: Serge E. Hallyn <serue@us.ibm.com>
Date: Wed, 16 Dec 2009 00:47:27 +0000 (-0800)
Subject: ipc ns: fix memory leak (idr)
X-Git-Tag: v2.6.27.45~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f653e714dfd24c86d63e6f661a61cd167a2535e6;p=pandora-kernel.git

ipc ns: fix memory leak (idr)

commit 7d6feeb287c61aafa88f06345387b1188edf4b86 upstream.

We have apparently had a memory leak since
7ca7e564e049d8b350ec9d958ff25eaa24226352 "ipc: store ipcs into IDRs" in
2007.  The idr of which 3 exist for each ipc namespace is never freed.

This patch simply frees them when the ipcns is freed.  I don't believe any
idr_remove() are done from rcu (and could therefore be delayed until after
this idr_destroy()), so the patch should be safe.  Some quick testing
showed no harm, and the memory leak fixed.

Caught by kmemleak.

Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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