From 7d6feeb287c61aafa88f06345387b1188edf4b86 Mon Sep 17 00:00:00 2001 From: "Serge E. Hallyn" Date: Tue, 15 Dec 2009 16:47:27 -0800 Subject: ipc ns: fix memory leak (idr) 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 --- ipc/msg.c | 1 + 1 file changed, 1 insertion(+) (limited to 'ipc/msg.c') diff --git a/ipc/msg.c b/ipc/msg.c index 085bd58f2f07..af42ef8900a6 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -125,6 +125,7 @@ void msg_init_ns(struct ipc_namespace *ns) void msg_exit_ns(struct ipc_namespace *ns) { free_ipcs(ns, &msg_ids(ns), freeque); + idr_destroy(&ns->ids[IPC_MSG_IDS].ipcs_idr); } #endif -- cgit v1.2.3-70-g09d2