linux-kernel - Re: 6.19.0-rc6 CAN regression

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Message-ID: <be555a81-9448-48cc-9b17-0e3f8c005ad1@hartkopp.net>
Date: Mon, 19 Jan 2026 08:52:15 +0100
From: Oliver Hartkopp <socketcan@...tkopp.net>
To: Francesco Dolcini <francesco@...cini.it>,
 Marc Kleine-Budde <mkl@...gutronix.de>, Vincent Mailhol <mailhol@...nel.org>
Cc: linux-can@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: 6.19.0-rc6 CAN regression

Hello Francesco,

On 19.01.26 08:17, Francesco Dolcini wrote:
> Hello,
> there is some issue with CAN on the latest linux 6.19 RC,
> canfdtest fails with `send failed: Invalid argument` fails on various
> SoC (NXP i.MX8MP, i.MX8QM, i.MX6 ... and TI AM62 and maybe more).
> 
> Is this known and already being addressed? I have seen some recent PR
> and patches, but I am not sure they are fixing this issue.

Yes, this is already fixed here:

https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can.git/log/?h=testing

in this patch:
"can: dev: alloc_candev_mqs(): add missing default CAN capabilities"

https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can.git/commit/?h=testing&id=375629c92fd842bc2a229bb34c4453f62e097169

The PR is waiting for upstream:
https://lore.kernel.org/linux-can/20260116200323.366877-1-mkl@pengutronix.de/

When you apply the above patch, it should just work again.

Best regards,
Oliver