ipc: make shm_get_stat() more robust

[pandora-kernel.git] / ipc / shm.c

diff --git a/ipc/shm.c b/ipc/shm.c
index f239d87..faa46da 100644 (file)
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -555,12 +555,14 @@ static void shm_get_stat(struct ipc_namespace *ns, unsigned long *rss,
        in_use = shm_ids(ns).in_use;
 
        for (total = 0, next_id = 0; total < in_use; next_id++) {
+               struct kern_ipc_perm *ipc;
                struct shmid_kernel *shp;
                struct inode *inode;
 
-               shp = idr_find(&shm_ids(ns).ipcs_idr, next_id);
-               if (shp == NULL)
+               ipc = idr_find(&shm_ids(ns).ipcs_idr, next_id);
+               if (ipc == NULL)
                        continue;
+               shp = container_of(ipc, struct shmid_kernel, shm_perm);
 
                inode = shp->shm_file->f_path.dentry->d_inode;