From 506ada89629ec7059b96ecfb0dc7d33ece0103ca Mon Sep 17 00:00:00 2001 From: Eduard Zingerman Date: Fri, 4 Sep 2026 17:05:56 -0700 Subject: bpf: mark a NULL kfunc argument precise check_kfunc_arg() allows bpf_register_is_null() for nullable arguments w/o marking the underlying scalar register precise. Hence a checkpoint created on such a path would prune against arbitrary scalar value. Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)") Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com Signed-off-by: Alexei Starovoitov --- 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