md: check for memory allocation failure in faulty personality

It's a fault injection module, but I don't think we should oops here.

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Neil Brown <neilb@suse.de>

diff --git a/drivers/md/faulty.c b/drivers/md/faulty.c
index 268547dbfbd30ce2942b3b5d92c9bbfab793d4b7..f26c1f9a475b8d9cbad5f885016e50723b580cd5 100644 (file)
--- a/drivers/md/faulty.c
+++ b/drivers/md/faulty.c
@@ -287,6 +287,8 @@ static int run(mddev_t *mddev)
        int i;
 
        conf_t *conf = kmalloc(sizeof(*conf), GFP_KERNEL);
+       if (!conf)
+               return -ENOMEM;
 
        for (i=0; i<Modes; i++) {
                atomic_set(&conf->counters[i], 0);