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 --- fs/ntfs/lib/lib.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 fs/ntfs/lib/lib.h (limited to 'fs/ntfs/lib/lib.h') diff --git a/fs/ntfs/lib/lib.h b/fs/ntfs/lib/lib.h new file mode 100644 index 000000000..a684d600f --- /dev/null +++ b/fs/ntfs/lib/lib.h @@ -0,0 +1,29 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * lib.h - Public declarations for the LZX and XPRESS decompressors. + * + * Adapted for the linux kernel. These are the low-level decompressor + * allocations; WOF (system-compressed) access goes through the + * ntfs_codec_ops interface declared in "../ntfs_codec.h". + */ + +#ifndef _LINUX_NTFS_LIB_LIB_H +#define _LINUX_NTFS_LIB_LIB_H + +#include + +/* globals from xpress_decompress.c */ +struct xpress_decompressor *xpress_allocate_decompressor(void); +void xpress_free_decompressor(struct xpress_decompressor *d); +int xpress_decompress(struct xpress_decompressor *d, + const void *compressed_data, size_t compressed_size, + void *uncompressed_data, size_t uncompressed_size); + +/* globals from lzx_decompress.c */ +struct lzx_decompressor *lzx_allocate_decompressor(void); +void lzx_free_decompressor(struct lzx_decompressor *d); +int lzx_decompress(struct lzx_decompressor *d, const void *compressed_data, + size_t compressed_size, void *uncompressed_data, + size_t uncompressed_size); + +#endif /* _LINUX_NTFS_LIB_LIB_H */ -- cgit v1.3.1