Xuanqiang Luo 75866e80e3 llc: fix SAP refcount leak when creating incoming sockets
commit 2c72eb6286 upstream.

llc_sap_add_socket() takes a SAP reference for each socket added to a SAP,
and llc_sap_remove_socket() releases it. llc_create_incoming_sock() takes
an additional SAP reference after adding the child socket.

This extra reference was balanced by an explicit llc_sap_put() in
llc_ui_release() until commit 3100aa9d74 ("llc: fix SAP reference
counting w.r.t. socket handling") removed that put. The corresponding hold
in the accept path was left behind.

When such a child socket is removed, only the reference taken by
llc_sap_add_socket() is released. The extra reference keeps the SAP alive
after its last socket is removed. Remove the obsolete hold.

Fixes: 3100aa9d74 ("llc: fix SAP reference counting w.r.t. socket handling")
Cc: stable@vger.kernel.org
Signed-off-by: Xuanqiang Luo <luoxuanqiang@kylinos.cn>
Link: https://patch.msgid.link/20260712130343.518797-1-xuanqiang.luo@linux.dev
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-07-24 16:03:45 +02:00
2026-07-24 16:03:06 +02:00
2026-05-23 13:03:09 +02:00
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2026-05-23 13:03:09 +02:00
2026-07-04 13:42:28 +02:00
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Linux kernel
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There are several guides for kernel developers and users. These guides can
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In order to build the documentation, use ``make htmldocs`` or
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    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.
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