* [PATCH] Check find_vma return code in make_pages_present()
@ 2004-09-01 15:51 Dave Jones
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From: Dave Jones @ 2004-09-01 15:51 UTC (permalink / raw)
To: linux-kernel
It can return NULL, so check for it.
Spotted with the source checker from Coverity.com.
Signed-off-by: Dave Jones <davej@redhat.com>
diff -urpN --exclude-from=/home/davej/.exclude bk-linus/mm/memory.c linux-2.6/mm/memory.c
--- bk-linus/mm/memory.c 2004-08-24 00:02:41.000000000 +0100
+++ linux-2.6/mm/memory.c 2004-09-01 13:31:18.000000000 +0100
@@ -1744,6 +1744,8 @@ int make_pages_present(unsigned long add
struct vm_area_struct * vma;
vma = find_vma(current->mm, addr);
+ if (!vma)
+ return -1;
write = (vma->vm_flags & VM_WRITE) != 0;
if (addr >= end)
BUG();
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2004-09-01 15:51 [PATCH] Check find_vma return code in make_pages_present() Dave Jones
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