From 27600805e62f800bacf990354632eae4e487d34c Mon Sep 17 00:00:00 2001 From: Yazen Ghannam Date: Thu, 3 Sep 2026 10:43:25 -0500 Subject: x86/amd_node: Fix PCI device reference counting in amd_smn_init() The local "root" pointer is a temporary variable used during the device search. Therefore, refcount related to the search iterators should be cleaned up after the search is complete. Use the __free() cleanup macro to ensure the refcount is decremented when the temporary pointer goes out of scope. Additionally, increment the refcount when caching a root pointer. This ensures the in-use refcount is separate from the temporary search refcounting. Finally, drop the redundant "root = NULL" before the second search loop. The pci_get_class() iterator always decrements the refcount of its "from" argument, so the first loop can only fall through with "root" already NULL. Fixes: 0a4b61d9c2e4 ("x86/amd_node: Fix AMD root device caching") Closes: https://sashiko.dev/#/patchset/20260806160159.230453-1-jason.andryuk%40amd.com Reported-by: Sashiko Assisted-by: LLM Signed-off-by: Yazen Ghannam Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Mario Limonciello (AMD) Cc: Link: https://patch.msgid.link/20260903154325.74343-1-yazen.ghannam@amd.com --- Documentation/admin-guide/abi.rst | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/admin-guide/abi.rst (limited to 'Documentation/admin-guide/abi.rst') diff --git a/Documentation/admin-guide/abi.rst b/Documentation/admin-guide/abi.rst new file mode 100644 index 000000000..c6039359e --- /dev/null +++ b/Documentation/admin-guide/abi.rst @@ -0,0 +1,29 @@ +.. SPDX-License-Identifier: GPL-2.0 + +===================== +Linux ABI description +===================== + +.. kernel-abi:: README + +ABI symbols +----------- + +.. toctree:: + :maxdepth: 2 + + abi-stable + abi-testing + abi-obsolete + abi-removed + +ABI files +--------- + +.. toctree:: + :maxdepth: 2 + + abi-stable-files + abi-testing-files + abi-obsolete-files + abi-removed-files -- cgit v1.3.1