Re: [PATCH v1] can: etas_es58x: es58x_rx_err_msg: fix memory leak in error path

On Wed. 27 Oct 2021 at 16:39, Marc Kleine-Budde [off-list ref] wrote:

On 27.10.2021 03:07:40, Vincent Mailhol wrote:

quoted

In es58x_rx_err_msg(), if can->do_set_mode() fails, the function
directly returns without calling netif_rx(skb). This means that the
skb previously allocated by alloc_can_err_skb() is not freed. In other
terms, this is a memory leak.

This patch simply removes the return statement in the error branch and
let the function continue.

* Appendix: how the issue was found *

Thanks for the explanation, but I think I'll remove the appendix while
applying.

The commit will have a link to this thread so if you don't mind,
I suggest to replace the full appendix with:

Issue was found with GCC -fanalyzer, please follow the link below
for details.

You can of course do the same for the m_can patch.


Yours sincerely,
Vincent Mailhol