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/btrfs/Makefile | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 fs/btrfs/Makefile (limited to 'fs/btrfs/Makefile') diff --git a/fs/btrfs/Makefile b/fs/btrfs/Makefile new file mode 100644 index 000000000..b15122aa2 --- /dev/null +++ b/fs/btrfs/Makefile @@ -0,0 +1,51 @@ +# SPDX-License-Identifier: GPL-2.0 + +# Subset of W=1 warnings +subdir-ccflags-y += -Wextra -Wunused -Wno-unused-parameter +subdir-ccflags-y += -Wmissing-declarations +subdir-ccflags-y += -Wmissing-format-attribute +subdir-ccflags-y += -Wmissing-prototypes +subdir-ccflags-y += -Wold-style-definition +subdir-ccflags-y += -Wmissing-include-dirs +condflags := \ + $(call cc-option, -Wunused-but-set-variable) \ + $(call cc-option, -Wunused-const-variable) \ + $(call cc-option, -Wpacked-not-aligned) \ + $(call cc-option, -Wstringop-truncation) \ + $(call cc-option, -Wmaybe-uninitialized) +subdir-ccflags-y += $(condflags) +# The following turn off the warnings enabled by -Wextra +subdir-ccflags-y += -Wno-missing-field-initializers +subdir-ccflags-y += -Wno-sign-compare +subdir-ccflags-y += -Wno-shift-negative-value + +obj-$(CONFIG_BTRFS_FS) := btrfs.o + +btrfs-y += super.o ctree.o extent-tree.o print-tree.o root-tree.o dir-item.o \ + file-item.o inode-item.o disk-io.o \ + transaction.o inode.o file.o defrag.o \ + extent_map.o sysfs.o accessors.o xattr.o ordered-data.o \ + extent_io.o volumes.o async-thread.o ioctl.o locking.o orphan.o \ + export.o tree-log.o free-space-cache.o zlib.o lzo.o zstd.o \ + compression.o delayed-ref.o relocation.o delayed-inode.o scrub.o \ + backref.o ulist.o qgroup.o send.o dev-replace.o raid56.o \ + uuid-tree.o props.o free-space-tree.o tree-checker.o space-info.o \ + block-rsv.o delalloc-space.o block-group.o discard.o reflink.o \ + subpage.o tree-mod-log.o extent-io-tree.o fs.o messages.o bio.o \ + lru_cache.o raid-stripe-tree.o fiemap.o direct-io.o + +btrfs-$(CONFIG_BTRFS_FS_POSIX_ACL) += acl.o +btrfs-$(CONFIG_BTRFS_DEBUG) += ref-verify.o +btrfs-$(CONFIG_BLK_DEV_ZONED) += zoned.o +btrfs-$(CONFIG_FS_VERITY) += verity.o + +btrfs-$(CONFIG_BTRFS_FS_RUN_SANITY_TESTS) += tests/free-space-tests.o \ + tests/extent-buffer-tests.o tests/btrfs-tests.o \ + tests/extent-io-tests.o tests/inode-tests.o tests/qgroup-tests.o \ + tests/free-space-tree-tests.o tests/extent-map-tests.o \ + tests/raid-stripe-tree-tests.o tests/delayed-refs-tests.o \ + tests/chunk-allocation-tests.o + +ifeq ($(CONFIG_BLK_DEV_ZONED),y) +btrfs-$(CONFIG_BTRFS_FS_RUN_SANITY_TESTS) += tests/zoned-tests.o +endif -- cgit v1.3.1