USB: usbtest: prevent a divide by zero bug
If param->length is zero, then this could lead to a divide by zero bug later in the function when we do: size %= max; Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -423,6 +423,9 @@ alloc_sglist(int nents, int max, int vary)
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unsigned i;
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unsigned size = max;
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if (max == 0)
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return NULL;
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sg = kmalloc_array(nents, sizeof *sg, GFP_KERNEL);
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if (!sg)
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return NULL;
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