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| author | Eduard Zingerman <eddyz87@gmail.com> | 2026-09-04 17:05:56 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-04 18:17:30 -0700 |
| commit | 506ada89629ec7059b96ecfb0dc7d33ece0103ca (patch) | |
| tree | 0b07297409b68d2333fb4f0eae7f3b072eb68d4c /security/landlock/id.h | |
| download | linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.tar.gz linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.zip | |
bpf: mark a NULL kfunc argument precisegrafted
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 <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'security/landlock/id.h')
| -rw-r--r-- | security/landlock/id.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/security/landlock/id.h b/security/landlock/id.h new file mode 100644 index 000000000..45dcfb9e9 --- /dev/null +++ b/security/landlock/id.h @@ -0,0 +1,25 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Landlock - Unique identification number generator + * + * Copyright © 2024-2025 Microsoft Corporation + */ + +#ifndef _SECURITY_LANDLOCK_ID_H +#define _SECURITY_LANDLOCK_ID_H + +#ifdef CONFIG_AUDIT + +void __init landlock_init_id(void); + +u64 landlock_get_id_range(size_t number_of_ids); + +#else /* CONFIG_AUDIT */ + +static inline void __init landlock_init_id(void) +{ +} + +#endif /* CONFIG_AUDIT */ + +#endif /* _SECURITY_LANDLOCK_ID_H */ |