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| author | Felix Fietkau <nbd@nbd.name> | 2026-07-22 08:26:09 +0000 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2026-07-31 12:25:40 +0000 |
| commit | e1f97c10a4ec2b9db69a134b757304399ca903ce (patch) | |
| tree | f67ba45a38d69c278923dd5e65e4c712f39f870f | |
| parent | d3ecac68f73b11828e72eaf7952a9beb5caea12b (diff) | |
| download | linux-next-e1f97c10a4ec2b9db69a134b757304399ca903ce.tar.gz linux-next-e1f97c10a4ec2b9db69a134b757304399ca903ce.zip | |
wifi: mt76: fix RXDMAD_C buffer recycling race
The RXDMAD_C buffers come from the RRO data queues' page pools, which are
bound to a different NAPI, so the direct page-pool recycle used here could
race the owning NAPI; take the non-direct path as is already done for WED
RX queues.
Fixes: e50d4d710efd ("wifi: mt76: Add mt76_dma_get_rxdmad_c_buf utility routione")
Link: https://patch.msgid.link/20260722082610.2699628-17-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@nbd.name>
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/dma.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c index baa2a3525e1e..946b7f90dc0f 100644 --- a/drivers/net/wireless/mediatek/mt76/dma.c +++ b/drivers/net/wireless/mediatek/mt76/dma.c @@ -990,7 +990,8 @@ mt76_dma_rx_process(struct mt76_dev *dev, struct mt76_queue *q, int budget) struct sk_buff *skb; unsigned char *data; bool check_ddone = false; - bool allow_direct = !mt76_queue_is_wed_rx(q); + bool allow_direct = !mt76_queue_is_wed_rx(q) && + !mt76_queue_is_wed_rro_rxdmad_c(q); bool more; if ((q->flags & MT_QFLAG_WED_RRO_EN) || |