On 1/6/2026 4:49 PM, Thomas Fourier wrote:

dma_alloc_coherent() allocates a DMA mapped buffer and stores the addresses in XXX_unaligned fields. Those should be reused when freeing the buffer rather than the aligned addresses.

Fixes: d889913205cf ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices") Cc: stable@vger.kernel.org Signed-off-by: Thomas Fourier fourier.thomas@gmail.com

---

drivers/net/wireless/ath/ath12k/ce.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/ce.c b/drivers/net/wireless/ath/ath12k/ce.c index 9a63608838ac..4aea58446838 100644 --- a/drivers/net/wireless/ath/ath12k/ce.c +++ b/drivers/net/wireless/ath/ath12k/ce.c @@ -984,8 +984,8 @@ void ath12k_ce_free_pipes(struct ath12k_base *ab) dma_free_coherent(ab->dev, pipe->src_ring->nentries * desc_sz + CE_DESC_RING_ALIGN,

• 			  pipe->src_ring->base_addr_owner_space,
  

• 			  pipe->src_ring->base_addr_ce_space);
  

• 			  pipe->src_ring->base_addr_owner_space_unaligned,
  

• 			  pipe->src_ring->base_addr_ce_space_unaligned);
  kfree(pipe->src_ring);
  pipe->src_ring = NULL;
  

  }

@@ -995,8 +995,8 @@ void ath12k_ce_free_pipes(struct ath12k_base *ab) dma_free_coherent(ab->dev, pipe->dest_ring->nentries * desc_sz + CE_DESC_RING_ALIGN,

• 			  pipe->dest_ring->base_addr_owner_space,
  

• 			  pipe->dest_ring->base_addr_ce_space);
  

• 			  pipe->dest_ring->base_addr_owner_space_unaligned,
  

• 			  pipe->dest_ring->base_addr_ce_space_unaligned);
  kfree(pipe->dest_ring);
  pipe->dest_ring = NULL;
  

  }

@@ -1007,8 +1007,8 @@ void ath12k_ce_free_pipes(struct ath12k_base *ab) dma_free_coherent(ab->dev, pipe->status_ring->nentries * desc_sz + CE_DESC_RING_ALIGN,

• 			  pipe->status_ring->base_addr_owner_space,
  

• 			  pipe->status_ring->base_addr_ce_space);
  

• 			  pipe->status_ring->base_addr_owner_space_unaligned,
  

• 			  pipe->status_ring->base_addr_ce_space_unaligned);
  kfree(pipe->status_ring);
  pipe->status_ring = NULL;
  

  }

Reviewed-by: Baochen Qiang baochen.qiang@oss.qualcomm.com