can: j1939: recvmsg(): allow MSG_CMSG_COMPAT flag
The control message provided by J1939 support MSG_CMSG_COMPAT but blocked recvmsg() syscalls that have set this flag, i.e. on 32bit user space on 64 bit kernels. Link: https://github.com/hartkopp/can-isotp/issues/59 Cc: Oleksij Rempel <o.rempel@pengutronix.de> Suggested-by:Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by:
Oliver Hartkopp <socketcan@hartkopp.net> Tested-by:
Oleksij Rempel <o.rempel@pengutronix.de> Acked-by:
Oleksij Rempel <o.rempel@pengutronix.de> Fixes: 9d71dd0c ("can: add support of SAE J1939 protocol") Link: https://lore.kernel.org/20230505110308.81087-3-mkl@pengutronix.de Cc: stable@vger.kernel.org Signed-off-by:
Marc Kleine-Budde <mkl@pengutronix.de>
parent
db2773d6
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