From: Dave Jones <davej@redhat.com>
To: linux-kernel@vger.kernel.org
Subject: [PATCH] Check find_vma return code in make_pages_present()
Date: Wed, 1 Sep 2004 16:51:22 +0100 [thread overview]
Message-ID: <200409011551.i81FpMhd000665@delerium.codemonkey.org.uk> (raw)
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();
reply other threads:[~2004-09-01 16:21 UTC|newest]
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