PIPE - Fix a panic introduced by the last commit.

* Forgot to release a token on the Re-tests.

Reported-by: Tobias Weingartner <weingart@tepid.org>

diff --git a/sys/kern/sys_pipe.c b/sys/kern/sys_pipe.c
index 67eea50..bc7812a 100644 (file)
--- a/sys/kern/sys_pipe.c
+++ b/sys/kern/sys_pipe.c
@@ -597,8 +597,10 @@ pipe_read(struct file *fp, struct uio *uio, struct ucred *cred, int fflags)
                 * Retest EOF - acquiring a new token can temporarily release
                 * tokens already held.
                 */
-               if (rpipe->pipe_state & PIPE_REOF)
+               if (rpipe->pipe_state & PIPE_REOF) {
+                       lwkt_reltoken(&wlock);
                        break;
+               }
 
                /*
                 * If there is no more to read in the pipe, reset its
@@ -908,6 +910,7 @@ pipe_write(struct file *fp, struct uio *uio, struct ucred *cred, int fflags)
                 * tokens already held.
                 */
                if (wpipe->pipe_state & PIPE_WEOF) {
+                       lwkt_reltoken(&rlock);
                        error = EPIPE;
                        break;
                }