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[ Upstream commit 0efdedfa537eb534c251a5b4794caaf72cc55869 ] When device_register() fails in register_node(), it calls put_device(&node->dev). This triggers node_device_release(), which calls kfree(to_node(dev)), thereby freeing the entire node structure. As a result, when register_node() returns an error, the node memory has already been freed. Calling kfree(node) again in register_one_node() leads to a double free. This patch removes the redundant kfree(node) from register_one_node() to prevent the double free. Link: https://lkml.kernel.org/r/20250918054144.58980-1-donettom@linux.ibm.com Fixes: 786eb990cfb7 ("drivers/base/node: handle error properly in register_one_node()") Signed-off-by: Donet Tom <donettom@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Oscar Salvador <osalvador@suse.de> Cc: Alison Schofield <alison.schofield@intel.com> Cc: Chris Mason <clm@meta.com> Cc: Danilo Krummrich <dakr@kernel.org> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Hiroyouki Kamezawa <kamezawa.hiroyu@jp.fujitsu.com> Cc: Joanthan Cameron <Jonathan.Cameron@huawei.com> Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com> Cc: Yury Norov (NVIDIA) <yury.norov@gmail.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> |
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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.