Ma Ke f112154107 of: unittest: Fix device reference count leak in of_unittest_pci_node_verify ...

commit a8de554774 upstream.

In of_unittest_pci_node_verify(), when the add parameter is false,
device_find_any_child() obtains a reference to a child device. This
function implicitly calls get_device() to increment the device's
reference count before returning the pointer. However, the caller
fails to properly release this reference by calling put_device(),
leading to a device reference count leak. Add put_device() in the else
branch immediately after child_dev is no longer needed.

As the comment of device_find_any_child states: "NOTE: you will need
to drop the reference with put_device() after use".

Found by code review.

Cc: stable@vger.kernel.org
Fixes: 26409dd045 ("of: unittest: Add pci_dt_testdrv pci driver")
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2025-10-19 16:33:51 +02:00

..

unittest-data

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.kunitconfig

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address.c

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base.c

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cpu.c

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device.c

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dynamic.c

of: dynamic: Fix use after free in of_changeset_add_prop_helper()

2025-09-04 15:31:43 +02:00

empty_root.dts

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fdt_address.c

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fdt.c

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irq.c

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Kconfig

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kexec.c

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kobj.c

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kunit_overlay_test.dtso

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Makefile

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module.c

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of_kunit_helpers.c

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of_numa.c

of_numa: fix uninitialized memory nodes causing kernel panic

2025-09-09 18:58:16 +02:00

of_private.h

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of_reserved_mem.c

of: reserved_mem: Restructure call site for dma_contiguous_early_fixup()

2025-09-04 15:31:45 +02:00

of_test.c

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overlay_test.c

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overlay.c

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pdt.c

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platform.c

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property.c

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resolver.c

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unittest.c

of: unittest: Fix device reference count leak in of_unittest_pci_node_verify

2025-10-19 16:33:51 +02:00