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891e0eab32
If device_register() fails, the refcount of device is not 0, the name
allocated in dev_set_name() is leaked. To fix this by calling put_device(),
so that it will be freed in callback function kobject_cleanup().
unreferenced object 0xffff9d99035c7a90 (size 8):
comm "systemd-udevd", pid 168, jiffies 4294672386 (age 152.089s)
hex dump (first 8 bytes):
66 77 30 2e 30 00 ff ff fw0.0...
backtrace:
[<00000000e1d62bac>] __kmem_cache_alloc_node+0x1e9/0x360
[<00000000bbeaff31>] __kmalloc_node_track_caller+0x44/0x1a0
[<00000000491f2fb4>] kvasprintf+0x67/0xd0
[<000000005b960ddc>] kobject_set_name_vargs+0x1e/0x90
[<00000000427ac591>] dev_set_name+0x4e/0x70
[<000000003b4e447d>] create_units+0xc5/0x110
fw_unit_release() will be called in the error path, move fw_device_get()
before calling device_register() to keep balanced with fw_device_put() in
fw_unit_release().
Cc: stable@vger.kernel.org
Fixes:
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.