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/device-mapper/index.rst | 43 +++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 Documentation/admin-guide/device-mapper/index.rst (limited to 'Documentation/admin-guide/device-mapper/index.rst') diff --git a/Documentation/admin-guide/device-mapper/index.rst b/Documentation/admin-guide/device-mapper/index.rst new file mode 100644 index 000000000..73c1f2002 --- /dev/null +++ b/Documentation/admin-guide/device-mapper/index.rst @@ -0,0 +1,43 @@ +============= +Device Mapper +============= + +.. toctree:: + :maxdepth: 1 + + cache-policies + cache + delay + dm-clone + dm-crypt + dm-dust + dm-ebs + dm-flakey + dm-ima + dm-init + dm-inlinecrypt + dm-integrity + dm-io + dm-log + dm-pcache + dm-queue-length + dm-raid + dm-service-time + dm-uevent + dm-zoned + era + kcopyd + linear + log-writes + persistent-data + snapshot + statistics + striped + switch + thin-provisioning + unstriped + vdo-design + vdo + verity + writecache + zero -- cgit v1.3.1