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 --- arch/riscv/Makefile.postlink | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 arch/riscv/Makefile.postlink (limited to 'arch/riscv/Makefile.postlink') diff --git a/arch/riscv/Makefile.postlink b/arch/riscv/Makefile.postlink new file mode 100644 index 000000000..0e4cf8ad2 --- /dev/null +++ b/arch/riscv/Makefile.postlink @@ -0,0 +1,33 @@ +# SPDX-License-Identifier: GPL-2.0 +# =========================================================================== +# Post-link riscv pass +# =========================================================================== +# +# Check that vmlinux relocations look sane + +PHONY := __archpost +__archpost: + +-include include/config/auto.conf +include $(srctree)/scripts/Kbuild.include + +quiet_cmd_relocs_check = CHKREL $@ +cmd_relocs_check = \ + $(CONFIG_SHELL) $(srctree)/arch/riscv/tools/relocs_check.sh "$(OBJDUMP)" "$(NM)" "$@" + +# `@true` prevents complaint when there is nothing to be done + +vmlinux vmlinux.unstripped: FORCE + @true +ifdef CONFIG_RELOCATABLE + $(call if_changed,relocs_check) +endif + +clean: + @true + +PHONY += FORCE clean + +FORCE: + +.PHONY: $(PHONY) -- cgit v1.3.1