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--- linux-2.6.7/fs/proc/base.c~ 2004-08-05 10:35:04.411443536 +0200
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+++ linux-2.6.7/fs/proc/base.c 2004-08-05 10:35:04.412443384 +0200
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@@ -330,6 +330,9 @@
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if (!mm)
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goto out;
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+ if (!mm->arg_end)
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+ goto out;
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+
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len = mm->arg_end - mm->arg_start;
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if (len > PAGE_SIZE)
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