Re: [PATCH] crypto: hisilicon/qm - Fix device reference leak in qm_get_qos_value

On Mon, Oct 27, 2025 at 11:09:34PM +0800, Miaoqian Lin wrote:

The qm_get_qos_value() function calls bus_find_device_by_name() which increases the device reference count, but fails to call put_device() to balance the reference count and lead to a device reference leak.

Add put_device() calls in both the error path and success path to properly balance the reference count.

Found via static analysis.

Fixes: 22d7a6c39cab ("crypto: hisilicon/qm - add pci bdf number check") Cc: stable@vger.kernel.org Signed-off-by: Miaoqian Lin linmq006@gmail.com

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drivers/crypto/hisilicon/qm.c | 2 ++ 1 file changed, 2 insertions(+)

Patch applied. Thanks.