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/squashfs/squashfs.h | 120 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 120 insertions(+) create mode 100644 fs/squashfs/squashfs.h (limited to 'fs/squashfs/squashfs.h') diff --git a/fs/squashfs/squashfs.h b/fs/squashfs/squashfs.h new file mode 100644 index 000000000..4851bd964 --- /dev/null +++ b/fs/squashfs/squashfs.h @@ -0,0 +1,120 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Squashfs - a compressed read only filesystem for Linux + * + * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008 + * Phillip Lougher + * + * squashfs.h + */ + +#define TRACE(s, args...) pr_debug("SQUASHFS: "s, ## args) + +#define ERROR(s, args...) pr_err("SQUASHFS error: "s, ## args) + +#define WARNING(s, args...) pr_warn("SQUASHFS: "s, ## args) + +#ifdef CONFIG_SQUASHFS_FILE_CACHE +#define SQUASHFS_READ_PAGES msblk->max_thread_num +#else +#define SQUASHFS_READ_PAGES 0 +#endif + +/* block.c */ +extern int squashfs_read_data(struct super_block *, u64, int, u64 *, + struct squashfs_page_actor *); + +/* cache.c */ +extern struct squashfs_cache *squashfs_cache_init(char *, int, int); +extern void squashfs_cache_delete(struct squashfs_cache *); +extern struct squashfs_cache_entry *squashfs_cache_get(struct super_block *, + struct squashfs_cache *, u64, int); +extern void squashfs_cache_put(struct squashfs_cache_entry *); +extern int squashfs_copy_data(void *, struct squashfs_cache_entry *, int, int); +extern int squashfs_read_metadata(struct super_block *, void *, u64 *, + int *, int); +extern struct squashfs_cache_entry *squashfs_get_fragment(struct super_block *, + u64, int); +extern struct squashfs_cache_entry *squashfs_get_datablock(struct super_block *, + u64, int); +extern void *squashfs_read_table(struct super_block *, u64, int); + +/* decompressor.c */ +extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int); +extern void *squashfs_decompressor_setup(struct super_block *, unsigned short); + +/* decompressor_xxx.c */ + +struct squashfs_decompressor_thread_ops { + void * (*create)(struct squashfs_sb_info *msblk, void *comp_opts); + void (*destroy)(struct squashfs_sb_info *msblk); + int (*decompress)(struct squashfs_sb_info *msblk, struct bio *bio, + int offset, int length, struct squashfs_page_actor *output); + int (*max_decompressors)(void); +}; + +#ifdef CONFIG_SQUASHFS_DECOMP_SINGLE +extern const struct squashfs_decompressor_thread_ops squashfs_decompressor_single; +#endif +#ifdef CONFIG_SQUASHFS_DECOMP_MULTI +extern const struct squashfs_decompressor_thread_ops squashfs_decompressor_multi; +#endif +#ifdef CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU +extern const struct squashfs_decompressor_thread_ops squashfs_decompressor_percpu; +#endif + +/* export.c */ +extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64, u64, + unsigned int); + +/* fragment.c */ +extern int squashfs_frag_lookup(struct super_block *, unsigned int, u64 *); +extern __le64 *squashfs_read_fragment_index_table(struct super_block *, + u64, u64, unsigned int); + +/* file.c */ +void squashfs_copy_cache(struct folio *, struct squashfs_cache_entry *, + size_t bytes, size_t offset); + +/* file_xxx.c */ +int squashfs_readpage_block(struct folio *, u64 block, int bsize, int expected); + +/* id.c */ +extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *); +extern __le64 *squashfs_read_id_index_table(struct super_block *, u64, u64, + unsigned short); + +/* inode.c */ +extern struct inode *squashfs_iget(struct super_block *, long long, + unsigned int); +extern int squashfs_read_inode(struct inode *, long long); + +/* xattr.c */ +extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t); + +/* + * Inodes, files, decompressor and xattr operations + */ + +/* dir.c */ +extern const struct file_operations squashfs_dir_ops; + +/* export.c */ +extern const struct export_operations squashfs_export_ops; + +/* file.c */ +extern const struct address_space_operations squashfs_aops; + +/* inode.c */ +extern const struct inode_operations squashfs_inode_ops; +extern const struct file_operations squashfs_file_operations; + +/* namei.c */ +extern const struct inode_operations squashfs_dir_inode_ops; + +/* symlink.c */ +extern const struct address_space_operations squashfs_symlink_aops; +extern const struct inode_operations squashfs_symlink_inode_ops; + +/* xattr.c */ +extern const struct xattr_handler * const squashfs_xattr_handlers[]; -- cgit v1.3.1