1 files changed, 1 insertions, 0 deletions
diff --git a/proc.c b/proc.c
index 9247cc7..e8a911d 100644
--- a/proc.c
+++ b/proc.c
@@ -73,6 +73,7 @@ newproc()
   // set up kernel stack to return to user space
   np->tf = (struct Trapframe *) (np->kstack + KSTACKSIZE - sizeof(struct Trapframe));
   *(np->tf) = *(op->tf);
+  np->tf->tf_regs.reg_eax = 0; // so fork() returns 0 in child
   sp = (unsigned *) np->tf;
   *(--sp) = (unsigned) &trapret;  // for return from swtch()
   *(--sp) = 0;  // previous bp for leave in swtch()