as rtm noticed, avoid doubly-freeing pipe page

2008-10-15 17:42:56 +00:00 · 2008-10-15 17:42:56 +00:00 · e670a48358
commit e670a48358
parent deca9fef83
1 changed files with 4 additions and 3 deletions
--- a/pipe.c
+++ b/pipe.c
@ -69,10 +69,11 @@ pipeclose(struct pipe *p, int writable)
    p->readopen = 0;
    wakeup(&p->writep);
  }
+  if(p->readopen == 0 && p->writeopen == 0) {
    release(&p->lock);
-
-  if(p->readopen == 0 && p->writeopen == 0)
    kfree((char*)p, PAGE);
+  } else
+    release(&p->lock);
 }

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