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can: gs_usb: gs_usb_receive_bulk_callback(): count RX overflow errors also in case of OOM

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[ Upstream commit 6c8bc15f02 ]

In case of an RX overflow error from the CAN controller and an OOM
where no skb can be allocated, the error counters are not incremented.

Fix this by first incrementing the error counters and then allocate
the skb.

Fixes: d08e973a77 ("can: gs_usb: Added support for the GS_USB CAN devices")
Link: https://lore.kernel.org/all/20230718-gs_usb-cleanups-v1-7-c3b9154ec605@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Marc Kleine-Budde 2023-07-04 11:23:37 +02:00 committed by Greg Kroah-Hartman
parent ce60bfc24c
commit 2dd5c7f420
1 changed files with 3 additions and 2 deletions
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5
drivers/net/can/usb/gs_usb.c
View file

@ -626,6 +626,9 @@ static void gs_usb_receive_bulk_callback(struct urb *urb)
}
if (hf->flags & GS_CAN_FLAG_OVERFLOW) {
stats->rx_over_errors++;
stats->rx_errors++;
skb = alloc_can_err_skb(netdev, &cf);
if (!skb)
goto resubmit_urb;
@ -633,8 +636,6 @@ static void gs_usb_receive_bulk_callback(struct urb *urb)
cf->can_id |= CAN_ERR_CRTL;
cf->len = CAN_ERR_DLC;
cf->data[1] = CAN_ERR_CRTL_RX_OVERFLOW;
stats->rx_over_errors++;
stats->rx_errors++;
netif_rx(skb);
}