Thread (3 messages) 3 messages, 3 authors, 2025-09-16
STALE296d

[PATCH net-next] io_uring/zcrx: fix ifq->if_rxq is -1, get dma_dev is NULL

From: Feng zhou <hidden>
Date: 2025-09-12 14:01:48
Also in: io-uring, lkml
Subsystem: io_uring, io_uring zcrx, the rest · Maintainers: Jens Axboe, Pavel Begunkov, Linus Torvalds

From: Feng Zhou <redacted>

ifq->if_rxq has not been assigned, is -1, the correct value is
in reg.if_rxq.

Fixes: 59b8b32ac8d469958936fcea781c7f58e3d64742 ("io_uring/zcrx: add support for custom DMA devices")
Signed-off-by: Feng Zhou <redacted>
---
 io_uring/zcrx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c
index 319eddfd30e0..3639283c87ca 100644
--- a/io_uring/zcrx.c
+++ b/io_uring/zcrx.c
@@ -600,7 +600,7 @@ int io_register_zcrx_ifq(struct io_ring_ctx *ctx,
 		goto err;
 	}
 
-	ifq->dev = netdev_queue_get_dma_dev(ifq->netdev, ifq->if_rxq);
+	ifq->dev = netdev_queue_get_dma_dev(ifq->netdev, reg.if_rxq);
 	if (!ifq->dev) {
 		ret = -EOPNOTSUPP;
 		goto err;
-- 
2.30.2
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