In commit 5ffaf85541 "NFS: replace global bl_wq with per-net one" we
made "msg" a pointer instead of a struct stored in stack memory. But we
forgot to change the memset() here so we're still clearing stack memory
instead clearing the struct like we intended. It will lead to a kernel
crash.
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
diff --git a/fs/nfs/blocklayout/blocklayoutdm.c b/fs/nfs/blocklayout/blocklayoutdm.c
index 30fc22a..737d839 100644
--- a/fs/nfs/blocklayout/blocklayoutdm.c
+++ b/fs/nfs/blocklayout/blocklayoutdm.c
@@ -54,7 +54,7 @@ static void dev_remove(struct net *net, dev_t dev)
dprintk("Entering %s\n", __func__);
bl_pipe_msg.bl_wq = &nn->bl_wq;
- memset(&msg, 0, sizeof(*msg));
+ memset(msg, 0, sizeof(*msg));
msg->data = kzalloc(1 + sizeof(bl_umount_request), GFP_NOFS);
if (!msg->data)
goto out;
--
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