Miaoqian Lin 01b1d78139 dmaengine: qcom: gpi: Fix memory leak in gpi_peripheral_config() ...

commit 3f747004bb upstream.

Fix a memory leak in gpi_peripheral_config() where the original memory
pointed to by gchan->config could be lost if krealloc() fails.

The issue occurs when:
1. gchan->config points to previously allocated memory
2. krealloc() fails and returns NULL
3. The function directly assigns NULL to gchan->config, losing the
   reference to the original memory
4. The original memory becomes unreachable and cannot be freed

Fix this by using a temporary variable to hold the krealloc() result
and only updating gchan->config when the allocation succeeds.

Found via static analysis and code review.

Fixes: 5d0c3533a1 ("dmaengine: qcom: Add GPI dma driver")
Cc: stable@vger.kernel.org
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Link: https://patch.msgid.link/20251029123421.91973-1-linmq006@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2026-01-23 11:18:49 +01:00

..

bam_dma.c

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gpi.c

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hidma_dbg.c

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hidma_ll.c

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hidma_mgmt_sys.c

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hidma_mgmt.c

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hidma_mgmt.h

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hidma.c

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hidma.h

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Kconfig

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Makefile

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qcom_adm.c

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