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 --- include/asm-generic/param.h | 11 +++++++++++ 1 file changed, 11 insertions(+) create mode 100644 include/asm-generic/param.h (limited to 'include/asm-generic/param.h') diff --git a/include/asm-generic/param.h b/include/asm-generic/param.h new file mode 100644 index 000000000..8348c116a --- /dev/null +++ b/include/asm-generic/param.h @@ -0,0 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_GENERIC_PARAM_H +#define __ASM_GENERIC_PARAM_H + +#include + +# undef HZ +# define HZ CONFIG_HZ /* Internal kernel timer frequency */ +# define USER_HZ __USER_HZ /* some user interfaces are */ +# define CLOCKS_PER_SEC (USER_HZ) /* in "ticks" like times() */ +#endif /* __ASM_GENERIC_PARAM_H */ -- cgit v1.3.1