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 --- drivers/md/dm-log-userspace-transfer.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 drivers/md/dm-log-userspace-transfer.h (limited to 'drivers/md/dm-log-userspace-transfer.h') diff --git a/drivers/md/dm-log-userspace-transfer.h b/drivers/md/dm-log-userspace-transfer.h new file mode 100644 index 000000000..f2f970af9 --- /dev/null +++ b/drivers/md/dm-log-userspace-transfer.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2006-2009 Red Hat, Inc. + * + * This file is released under the LGPL. + */ + +#ifndef __DM_LOG_USERSPACE_TRANSFER_H__ +#define __DM_LOG_USERSPACE_TRANSFER_H__ + +#define DM_MSG_PREFIX "dm-log-userspace" + +int dm_ulog_tfr_init(void); +void dm_ulog_tfr_exit(void); +int dm_consult_userspace(const char *uuid, uint64_t luid, int request_type, + char *data, size_t data_size, + char *rdata, size_t *rdata_size); + +#endif /* __DM_LOG_USERSPACE_TRANSFER_H__ */ -- cgit v1.3.1