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/trace_clock.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 include/asm-generic/trace_clock.h (limited to 'include/asm-generic/trace_clock.h') diff --git a/include/asm-generic/trace_clock.h b/include/asm-generic/trace_clock.h new file mode 100644 index 000000000..cbbca2959 --- /dev/null +++ b/include/asm-generic/trace_clock.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_GENERIC_TRACE_CLOCK_H +#define _ASM_GENERIC_TRACE_CLOCK_H +/* + * Arch-specific trace clocks. + */ + +/* + * Additional trace clocks added to the trace_clocks + * array in kernel/trace/trace.c + * None if the architecture has not defined it. + */ +#ifndef ARCH_TRACE_CLOCKS +# define ARCH_TRACE_CLOCKS +#endif + +#endif /* _ASM_GENERIC_TRACE_CLOCK_H */ -- cgit v1.3.1