Victoria Votokina 7d851f7460 most: usb: hdm_probe: Fix calling put_device() before device initialization ...

commit a8cc9e5fcb 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 14:09:01 +01:00

..

configfs.c

…

core.c

…

Kconfig

…

Makefile

…

most_cdev.c

…

most_snd.c

…

most_usb.c

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

2025-10-29 14:09:01 +01:00