diff options
| author | Pavel Emelianov <xemul@openvz.org> | 2006-11-02 22:07:03 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-11-03 12:27:56 -0800 |
| commit | c7e12b838989b0e432c7a1cdf1e6c6fd936007f6 (patch) | |
| tree | 31a6eea1d9ace0b467ab6bb209dd6a883910d682 /ipc/shm.c | |
| parent | 733b72c31efb0d6b29577655939ccfe835381b52 (diff) | |
| download | lwn-c7e12b838989b0e432c7a1cdf1e6c6fd936007f6.tar.gz lwn-c7e12b838989b0e432c7a1cdf1e6c6fd936007f6.zip | |
[PATCH] Fix ipc entries removal
Fix two issuses related to ipc_ids->entries freeing.
1. When freeing ipc namespace we need to free entries allocated
with ipc_init_ids().
2. When removing old entries in grow_ary() ipc_rcu_putref()
may be called on entries set to &ids->nullentry earlier in
ipc_init_ids().
This is almost impossible without namespaces, but with
them this situation becomes possible.
Found during OpenVZ testing after obvious leaks in beancounters.
Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Cc: Kirill Korotaev <dev@openvz.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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 bfbd317ec11c..d1198dd07a1a 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -116,6 +116,7 @@ void shm_exit_ns(struct ipc_namespace *ns) } mutex_unlock(&shm_ids(ns).mutex); + ipc_fini_ids(ns->ids[IPC_SHM_IDS]); kfree(ns->ids[IPC_SHM_IDS]); ns->ids[IPC_SHM_IDS] = NULL; } |