Miaoqian LinandGreg Kroah-Hartman bfdcd67e0f crypto: hisilicon/qm - Fix device reference leak in qm_get_qos_value
commit 59b0afd01b upstream.

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: 22d7a6c39c ("crypto: hisilicon/qm - add pci bdf number check")
Cc: stable@vger.kernel.org
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Longfang Liu <liulongfang@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-11-24 10:30:08 +01:00
2025-11-24 10:30:06 +01:00
2025-11-02 22:14:42 +09:00

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