fix devtmpfs race
After we's done complete(&req->done), there's nothing to prevent the
scope containing *req from being gone and *req overwritten by any
kind of junk. So we must read req->next before that...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index 6d678c9..b89fffc 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -406,9 +406,10 @@
requests = NULL;
spin_unlock(&req_lock);
while (req) {
+ struct req *next = req->next;
req->err = handle(req->name, req->mode, req->dev);
complete(&req->done);
- req = req->next;
+ req = next;
}
spin_lock(&req_lock);
}