* [PATCH] dmaengine: at_hdmac: fix memory leak in atc_prep_slave_sg
@ 2026-07-23 5:04 Rosen Penev
0 siblings, 0 replies; only message in thread
From: Rosen Penev @ 2026-07-23 5:04 UTC (permalink / raw)
To: dmaengine
Cc: Ludovic Desroches, Vinod Koul, Frank Li, Dan Williams,
Nicolas Ferre, moderated list:MICROCHIP AT91 DMA DRIVERS,
open list
The default case in the direction switch returns NULL without freeing
the descriptor allocated earlier via kzalloc_flex(). Add the missing
kfree(desc) before returning.
Fixes: 808347f6a317 ("dmaengine: at_hdmac: add DMA slave transfers")
Assisted-by: opencode:big-pickle
Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
drivers/dma/at_hdmac.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index f9c336630fa2..c06f70dbc4c5 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -1381,6 +1381,7 @@ atc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
}
break;
default:
+ kfree(desc);
return NULL;
}
--
2.55.0
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