From 7f7f74dd777a6f430f2a8c8d479b1ce561663e29 Mon Sep 17 00:00:00 2001 From: Oleksij Rempel Date: Tue, 28 May 2024 09:06:48 +0200 Subject: [PATCH] net: can: j1939: recover socket queue on CAN bus error during BAM transmission MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit commit 9ad1da14ab3bf23087ae45fe399d84a109ddb81a upstream. Addresses an issue where a CAN bus error during a BAM transmission could stall the socket queue, preventing further transmissions even after the bus error is resolved. The fix activates the next queued session after the error recovery, allowing communication to continue. Fixes: 9d71dd0c70099 ("can: add support of SAE J1939 protocol") Cc: stable@vger.kernel.org Reported-by: Alexander Hölzl Tested-by: Alexander Hölzl Signed-off-by: Oleksij Rempel Link: https://lore.kernel.org/all/20240528070648.1947203-1-o.rempel@pengutronix.de Cc: stable@vger.kernel.org Signed-off-by: Marc Kleine-Budde Signed-off-by: Greg Kroah-Hartman --- net/can/j1939/transport.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/can/j1939/transport.c b/net/can/j1939/transport.c index 5dcbb0b7d..c36d0c2bf 100755 --- a/net/can/j1939/transport.c +++ b/net/can/j1939/transport.c @@ -1662,6 +1662,8 @@ static int j1939_xtp_rx_rts_session_active(struct j1939_session *session, j1939_session_timers_cancel(session); j1939_session_cancel(session, J1939_XTP_ABORT_BUSY); + if (session->transmission) + j1939_session_deactivate_activate_next(session); return -EBUSY; }