diff options
| author | Ma Ke <make24@iscas.ac.cn> | 2025-07-17 10:23:08 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-01 09:51:27 +0100 |
| commit | 7d59ff999d9e2015f6cb324b3234188b4443e9b6 (patch) | |
| tree | 81fb99a0c347364a3908daac18931d266d9a8693 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 4b6107578ebefbf918391744a4808a1a5bdad17f (diff) | |
dpaa2-eth: Fix device reference count leak in MAC endpoint handling
commit ee9f3a81ab08dfe0538dbd1746f81fd4d5147fdc upstream.
The fsl_mc_get_endpoint() function uses device_find_child() for
localization, which implicitly calls get_device() to increment the
device's reference count before returning the pointer. However, the
caller dpaa2_eth_connect_mac() fails to properly release this
reference in multiple scenarios. We should call put_device() to
decrement reference count properly.
As comment of device_find_child() says, 'NOTE: you will need to drop
the reference with put_device() after use'.
Found by code review.
Cc: stable@vger.kernel.org
Fixes: 719479230893 ("dpaa2-eth: add MAC/PHY support through phylink")
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250717022309.3339976-2-make24@iscas.ac.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions