From ba04b3e70e4f1916c777d62de53088d96b09579f Mon Sep 17 00:00:00 2001
From: Austin Clements <amdragon@mit.edu>
Date: Wed, 1 Sep 2010 00:27:12 -0400
Subject: Fix similar leak in copyuvm
---
vm.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
(limited to 'vm.c')
diff --git a/vm.c b/vm.c
index 95eeca8..a60c915 100644
--- a/vm.c
+++ b/vm.c
@@ -313,13 +313,17 @@ copyuvm(pde_t *pgdir, uint sz)
if(*pte & PTE_P){
pa = PTE_ADDR(*pte);
if (!(mem = kalloc()))
- return 0;
+ goto bad;
memmove(mem, (char *)pa, PGSIZE);
if (!mappages(d, (void *)i, PGSIZE, PADDR(mem), PTE_W|PTE_U))
- return 0;
+ goto bad;
}
}
return d;
+
+bad:
+ freevm(d);
+ return 0;
}
// Allocate one page table for the machine for the kernel address
--
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