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 --- scripts/head-object-list.txt | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 scripts/head-object-list.txt (limited to 'scripts/head-object-list.txt') diff --git a/scripts/head-object-list.txt b/scripts/head-object-list.txt new file mode 100644 index 000000000..7274dfc65 --- /dev/null +++ b/scripts/head-object-list.txt @@ -0,0 +1,41 @@ +# Head objects +# +# The objects listed here are placed at the head of vmlinux. A typical use-case +# is an object that contains the entry point. This is kept for compatibility +# with head-y, which Kbuild used to support. +# +# A counter approach is to control the section placement by the linker script. +# The code marked as __HEAD goes into the ".head.text" section, which is placed +# before the normal ".text" section. +# +# If you can achieve the correct code ordering by linker script, please delete +# the entry from this file. +# +arch/alpha/kernel/head.o +arch/arc/kernel/head.o +arch/arm/kernel/head-nommu.o +arch/arm/kernel/head.o +arch/csky/kernel/head.o +arch/hexagon/kernel/head.o +arch/loongarch/kernel/head.o +arch/m68k/68000/head.o +arch/m68k/coldfire/head.o +arch/m68k/kernel/head.o +arch/m68k/kernel/sun3-head.o +arch/microblaze/kernel/head.o +arch/nios2/kernel/head.o +arch/parisc/kernel/head.o +arch/powerpc/kernel/head_44x.o +arch/powerpc/kernel/head_64.o +arch/powerpc/kernel/head_8xx.o +arch/powerpc/kernel/head_85xx.o +arch/powerpc/kernel/head_book3s_32.o +arch/powerpc/kernel/prom_entry_64.o +arch/powerpc/kernel/fpu.o +arch/powerpc/kernel/vector.o +arch/powerpc/kernel/prom_init.o +arch/s390/kernel/head64.o +arch/sh/kernel/head_32.o +arch/sparc/kernel/head_32.o +arch/sparc/kernel/head_64.o +arch/xtensa/kernel/head.o -- cgit v1.3.1