interrupts could be recursive since lapic_eoi() called before rti

so fast interrupts overflow the kernel stack
fix: cli() before lapic_eoi()

1 files changed, 1 insertions, 1 deletions

diff --git a/pipe.c b/pipe.c
index c8da428..6f80810 100644
--- a/pipe.c
+++ b/pipe.c
@@ -34,7 +34,7 @@ pipe_alloc(struct fd **fd1, struct fd **fd2)
   p->writeopen = 1;
   p->writep = 0;
   p->readp = 0;
-  memset(&p->lock, 0, sizeof(p->lock));
+  initlock(&p->lock, "pipe");
   (*fd1)->type = FD_PIPE;
   (*fd1)->readable = 1;
   (*fd1)->writeable = 0;