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 --- tools/testing/memblock/scripts/Makefile.include | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 tools/testing/memblock/scripts/Makefile.include (limited to 'tools/testing/memblock/scripts') diff --git a/tools/testing/memblock/scripts/Makefile.include b/tools/testing/memblock/scripts/Makefile.include new file mode 100644 index 000000000..998281723 --- /dev/null +++ b/tools/testing/memblock/scripts/Makefile.include @@ -0,0 +1,19 @@ +# SPDX-License-Identifier: GPL-2.0 +# Definitions for user-provided arguments + +# Simulate CONFIG_NUMA=y +ifeq ($(NUMA), 1) + CFLAGS += -D CONFIG_NUMA -D CONFIG_NODES_SHIFT=4 +endif + +# Use 32 bit physical addresses. +# Remember to install 32-bit version of dependencies. +ifeq ($(32BIT_PHYS_ADDR_T), 1) + CFLAGS += -m32 -U CONFIG_PHYS_ADDR_T_64BIT + LDFLAGS += -m32 +endif + +# Enable memblock_dbg() messages +ifeq ($(MEMBLOCK_DEBUG), 1) + CFLAGS += -D MEMBLOCK_DEBUG +endif -- cgit v1.3.1