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/arm64/Kconfig.debug | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 arch/arm64/Kconfig.debug (limited to 'arch/arm64/Kconfig.debug') diff --git a/arch/arm64/Kconfig.debug b/arch/arm64/Kconfig.debug new file mode 100644 index 000000000..265c44610 --- /dev/null +++ b/arch/arm64/Kconfig.debug @@ -0,0 +1,23 @@ +# SPDX-License-Identifier: GPL-2.0-only + +config PID_IN_CONTEXTIDR + bool "Write the current PID to the CONTEXTIDR register" + help + Enabling this option causes the kernel to write the current PID to + the CONTEXTIDR register, at the expense of some additional + instructions during context switch. Say Y here only if you are + planning to use hardware trace tools with this kernel. + +config DEBUG_EFI + depends on EFI && DEBUG_INFO + bool "UEFI debugging" + help + Enable this option to include EFI specific debugging features into + the kernel that are only useful when using a debug build of the + UEFI firmware + +config ARM64_RELOC_TEST + depends on m + tristate "Relocation testing module" + +source "drivers/hwtracing/coresight/Kconfig" -- cgit v1.3.1