Functions that are exported using EXPORT_SYMBOL, and thus are presumably
freely available for use in dynamically loaded modules, do not seem to
very often check the validity of their inputs. For a simple example,
the following code from arch/arm/mach-realview/clock.c does not even check
that clk is not NULL:
unsigned long clk_get_rate(struct clk *clk)
{
return clk->rate;
}
EXPORT_SYMBOL(clk_get_rate);
Is this a problem?
julia
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