Victoria Votokina 6fb8fbc0aa most: usb: hdm_probe: Fix calling put_device() before device initialization ...

commit a8cc9e5fcb0e2eef21513a4fec888f5712cb8162 upstream.

The early error path in hdm_probe() can jump to err_free_mdev before
&mdev->dev has been initialized with device_initialize(). Calling
put_device(&mdev->dev) there triggers a device core WARN and ends up
invoking kref_put(&kobj->kref, kobject_release) on an uninitialized
kobject.

In this path the private struct was only kmalloc'ed and the intended
release is effectively kfree(mdev) anyway, so free it directly instead
of calling put_device() on an uninitialized device.

This removes the WARNING and fixes the pre-initialization error path.

Fixes: 97a6f772f3 ("drivers: most: add USB adapter driver")
Cc: stable <stable@kernel.org>
Signed-off-by: Victoria Votokina <Victoria.Votokina@kaspersky.com>
Link: https://patch.msgid.link/20251010105241.4087114-3-Victoria.Votokina@kaspersky.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2025-10-29 14:07:05 +01:00

..

configfs.c

staging: most: Replace all non-returning strlcpy with strscpy

2023-06-01 07:07:37 -07:00

core.c

most: core: Drop device reference after usage in get_channel()

2025-08-28 16:28:45 +02:00

Kconfig

most: tell what the MOST acronym means

2023-01-19 17:16:05 +01:00

Makefile

drivers: most: add ALSA sound driver

2021-03-23 10:03:13 +01:00

most_cdev.c

driver core: class: remove module * from class_create()

2023-03-17 15:16:33 +01:00

most_snd.c

most: fix kernel-doc warnings

2023-01-19 17:16:01 +01:00

most_usb.c

most: usb: hdm_probe: Fix calling put_device() before device initialization

2025-10-29 14:07:05 +01:00