diff options
| author | Serge E. Hallyn <serue@us.ibm.com> | 2009-12-15 16:47:27 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-01-28 15:20:38 -0800 |
| commit | f653e714dfd24c86d63e6f661a61cd167a2535e6 (patch) | |
| tree | 6d639fb62d795611072bd0881293b113c84e40cc /ipc/shm.c | |
| parent | 4fbebe26d7a5eed6c1900bf2142b68af7df38462 (diff) | |
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>
Diffstat (limited to 'ipc/shm.c')
| -rw-r--r-- | ipc/shm.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/ipc/shm.c b/ipc/shm.c index 35a65be64331..37caa449e9ec 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -100,6 +100,7 @@ static void do_shm_rmid(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp) void shm_exit_ns(struct ipc_namespace *ns) { free_ipcs(ns, &shm_ids(ns), do_shm_rmid); + idr_destroy(&ns->ids[IPC_SHM_IDS].ipcs_idr); } #endif |