dmaengine: ti: k3-udma-glue: fix NULL dereference in k3_udma_glue_release_rx_chn()

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If devm_kcalloc() for rx_chn->flows fails in a channel request function,
the error path calls k3_udma_glue_release_rx_chn(), which dereferences
the NULL rx_chn->flows pointer in k3_udma_glue_release_rx_flow().

Skip the flow release loop in k3_udma_glue_release_rx_chn() when
rx_chn->flows is not allocated.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: d702419134 ("dmaengine: ti: k3-udma: Add glue layer for non DMAengine users")
Cc: stable@vger.kernel.org
Reported-by: Pavel Zhigulin <Pavel.Zhigulin@kaspersky.com>
Signed-off-by: Alexander Chesnokov <Alexander.Chesnokov@kaspersky.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260812053426.3521589-1-Alexander.Chesnokov@kaspersky.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

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Alexander Chesnokov 2026-08-12 08:34:26 +03:00 • committed by Vinod Koul

parent d1fc569fcb

commit 0294b6dd51

1 changed files with 3 additions and 2 deletions

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drivers/dma/ti/k3-udma-glue.c

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