Author: Julia Lawall <julia@diku.dk> The semantic match that finds the problem is as follows: (http://www.emn.fr/x-info/coccinelle/) @r exists@ expression E,E1; statement S; position p1,p2,p3; @@ E =@p1 \(kmalloc\|kcalloc\|kzalloc\)(…) … when != E = E1 if (E == NULL || …) S … when != E = E1 if@p2 (…) { … when != kfree(E) } … …
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