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-audit.h | 66 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 drivers/md/dm-audit.h (limited to 'drivers/md/dm-audit.h') diff --git a/drivers/md/dm-audit.h b/drivers/md/dm-audit.h new file mode 100644 index 000000000..2385f2b65 --- /dev/null +++ b/drivers/md/dm-audit.h @@ -0,0 +1,66 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Creating audit records for mapped devices. + * + * Copyright (C) 2021 Fraunhofer AISEC. All rights reserved. + * + * Authors: Michael Weiß + */ + +#ifndef DM_AUDIT_H +#define DM_AUDIT_H + +#include +#include + +#ifdef CONFIG_DM_AUDIT +void dm_audit_log_bio(const char *dm_msg_prefix, const char *op, + struct bio *bio, sector_t sector, int result); + +/* + * dm_audit_log_ti() is not intended to be used directly in dm modules, + * the wrapper functions below should be called by dm modules instead. + */ +void dm_audit_log_ti(int audit_type, const char *dm_msg_prefix, const char *op, + struct dm_target *ti, int result); + +static inline void dm_audit_log_ctr(const char *dm_msg_prefix, + struct dm_target *ti, int result) +{ + dm_audit_log_ti(AUDIT_DM_CTRL, dm_msg_prefix, "ctr", ti, result); +} + +static inline void dm_audit_log_dtr(const char *dm_msg_prefix, + struct dm_target *ti, int result) +{ + dm_audit_log_ti(AUDIT_DM_CTRL, dm_msg_prefix, "dtr", ti, result); +} + +static inline void dm_audit_log_target(const char *dm_msg_prefix, const char *op, + struct dm_target *ti, int result) +{ + dm_audit_log_ti(AUDIT_DM_EVENT, dm_msg_prefix, op, ti, result); +} +#else +static inline void dm_audit_log_bio(const char *dm_msg_prefix, const char *op, + struct bio *bio, sector_t sector, + int result) +{ +} +static inline void dm_audit_log_target(const char *dm_msg_prefix, + const char *op, struct dm_target *ti, + int result) +{ +} +static inline void dm_audit_log_ctr(const char *dm_msg_prefix, + struct dm_target *ti, int result) +{ +} + +static inline void dm_audit_log_dtr(const char *dm_msg_prefix, + struct dm_target *ti, int result) +{ +} +#endif + +#endif -- cgit v1.3.1