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 --- include/crypto/streebog.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 include/crypto/streebog.h (limited to 'include/crypto/streebog.h') diff --git a/include/crypto/streebog.h b/include/crypto/streebog.h new file mode 100644 index 000000000..570f720a1 --- /dev/null +++ b/include/crypto/streebog.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0+ OR BSD-2-Clause */ +/* + * Copyright (c) 2013 Alexey Degtyarev + * Copyright (c) 2018 Vitaly Chikunov + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + */ + +#ifndef _CRYPTO_STREEBOG_H_ +#define _CRYPTO_STREEBOG_H_ + +#include + +#define STREEBOG256_DIGEST_SIZE 32 +#define STREEBOG512_DIGEST_SIZE 64 +#define STREEBOG_BLOCK_SIZE 64 + +struct streebog_uint512 { + __le64 qword[8]; +}; + +struct streebog_state { + struct streebog_uint512 hash; + struct streebog_uint512 h; + struct streebog_uint512 N; + struct streebog_uint512 Sigma; +}; + +#endif /* !_CRYPTO_STREEBOG_H_ */ -- cgit v1.3.1