On Thu, Feb 15, 2024 at 12:55:59PM +0100, Ilya Maximets wrote:
> The cited commit removed direct call to RSTP module from a callback,
> but we can still enter the module after going through a patch port
> to a different bridge via ofproto_dpif_send_packet().
>
> Partially revert the change going back to a recursive mutex.
>
> Adding the same test for both RSTP and STP. While STP unit tests
> do catch the same problem for STP (if STP mutex changed to be
> non-recursive), they are not actually using the same callback function
> as ovs-vswitchd, so it makes sense to test the implementation in
> ovs-vswitchd itself as well.
>
> Fixes: 6b90bc57e7a2 ("lib/rstp: Remove lock recursion.")
> Reported-at:
> https://mail.openvswitch.org/pipermail/ovs-discuss/2024-February/052925.html
> Reported-by: Huangzhidong <huang.zhid...@h3c.com>
> Signed-off-by: Ilya Maximets <i.maxim...@ovn.org>
Acked-by: Simon Horman <ho...@ovn.org>
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