From f653e714dfd24c86d63e6f661a61cd167a2535e6 Mon Sep 17 00:00:00 2001 From: "Serge E. Hallyn" Date: Tue, 15 Dec 2009 16:47:27 -0800 Subject: [PATCH] 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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Acked-by: Nick Piggin Signed-off-by: Greg Kroah-Hartman --- Reading git-format-patch failed