From 836b2fe544a5e9b5ce116622cb36fba33838c6fd Mon Sep 17 00:00:00 2001 From: Eduard Zingerman Date: Fri, 4 Sep 2026 01:33:23 -0700 Subject: selftests/bpf: Check that JMP32 pointer vs zero jumps are not predicted Add jmp32_ptr_vs_zero_jne: the fall-through of the 32-bit compare, which the verifier used to skip, contains an out of bounds map value access, hence w/o the previous patch the program is accepted. See previous patch for detailed description. Reported-by: Nicholas Carlini Suggested-by: Nicholas Carlini Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/bpf/20260904083325.2083493-6-eddyz87@gmail.com Signed-off-by: Kumar Kartikeya Dwivedi --- include/asm-generic/bitops.h | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 include/asm-generic/bitops.h (limited to 'include/asm-generic/bitops.h') diff --git a/include/asm-generic/bitops.h b/include/asm-generic/bitops.h new file mode 100644 index 000000000..a47b8a71d --- /dev/null +++ b/include/asm-generic/bitops.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_GENERIC_BITOPS_H +#define __ASM_GENERIC_BITOPS_H + +/* + * For the benefit of those who are trying to port Linux to another + * architecture, here are some C-language equivalents. They should + * generate reasonable code, so take a look at what your compiler spits + * out before rolling your own buggy implementation in assembly language. + * + * C language equivalents written by Theodore Ts'o, 9/26/92 + */ + +#include +#include +#include + +#include +#include +#include +#include +#include + +#ifndef _LINUX_BITOPS_H +#error only can be included directly +#endif + +#include +#include +#include +#include + +#include +#include +#include +#include + +#endif /* __ASM_GENERIC_BITOPS_H */ -- cgit v1.3.1