On Sat, 13 Jul 2019 at 05:48, Wen Yang wrote:
>
> The cpu_dai variable is still being used after the of_node_put() call,
> which may result in double-free:
>
> of_node_put(cpu_dai);---> released here
>
> ret = devm_snd_soc_register_card(dev, card);
> if (ret < 0
> These two updates fix two different bugs.
I can follow this view to some degree.
> and the other is the double-free issue
This programming error affects also the use of data structures which became
invalid.
https://cwe.mitre.org/data/definitions/415.html#oc_415_Notes
> So we sent two patch
> The cpu_dai variable is still being used after the of_node_put() call,
Such an implementation detail is questionable.
https://wiki.sei.cmu.edu/confluence/display/c/MEM30-C.+Do+not+access+freed+memory
> which may result in double-free:
This consequence is also undesirable.
https://cwe.mitre.or
The cpu_dai variable is still being used after the of_node_put() call,
which may result in double-free:
of_node_put(cpu_dai);---> released here
ret = devm_snd_soc_register_card(dev, card);
if (ret < 0) {
...
goto err_put_clk_i2s;--> jump to
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