Re: [PATCH][next] net/mlx5: Bridge: Fix uninitialized variable err

On Wed 18 Aug 2021 at 17:25, Colin King [off-list ref] wrote:

From: Colin Ian King <redacted>

A recent change removed the assignment of err to the return from
the call mlx5_esw_bridge_lower_rep_vport_num_vhca_id_get, so now
err is uninitialized. This is problematic in the switch statement
where attr-id is SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS, there
is now a possibility of err not being assigned and the function
returning a garbage value in err. Fix this by initializing err
to zero.

Addresses-Coverity; ("Uninitialized scalar variable")
Fixes: ff9b7521468b ("net/mlx5: Bridge, support LAG")
Signed-off-by: Colin Ian King <redacted>
---

Colin, thanks for fixing this!

Saeed, I've already submitted fix for this and another similar Coverity
issue (in mlx5_esw_bridge_port_changeupper()) internally. This patch is
exactly the same one line fix as mine, so you can take whichever you
prefer.

Reviewed-by: Vlad Buslov <redacted>

[...]