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commit e670a4835858b48e1568742dbe939800e2d44c13
parent deca9fef83450fa9659b750497d46e7887064aa5
Author: kolya <kolya>
Date:   Wed, 15 Oct 2008 17:42:56 +0000

as rtm noticed, avoid doubly-freeing pipe page

Diffstat:

Mpipe.c | 7++++---


1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/pipe.c b/pipe.c
@@ -69,10 +69,11 @@ pipeclose(struct pipe *p, int writable)
     p->readopen = 0;
     wakeup(&p->writep);
   }
-  release(&p->lock);
-
-  if(p->readopen == 0 && p->writeopen == 0)
+  if(p->readopen == 0 && p->writeopen == 0) {
+    release(&p->lock);
     kfree((char*)p, PAGE);
+  } else
+    release(&p->lock);
 }
 
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