From 6668ed271eaefaa63e686bdfbedaeb7b8e492722 Mon Sep 17 00:00:00 2001 From: Kumar Kartikeya Dwivedi Date: Fri, 4 Sep 2026 10:43:19 +0200 Subject: selftests/bpf: Reject graph kptr use after RCU unlock Add a sleepable verifier test that loads a graph-node local kptr in an explicit RCU read-side critical section, then passes its node to bpf_rbtree_remove() after the section ends. Before the verifier fix, the stale NON_OWN_REF flag makes the node look like a live borrowed reference and the program is accepted. After the fix, the pointer is demoted without NON_OWN_REF and the graph kfunc argument is rejected. Also exercise a graph kptr loaded while a spin lock provides implicit RCU protection. The pointer must be invalidated when the lock is released, which guards the required ordering between non-owning-reference invalidation and RCU demotion. Update the existing fault-protected load test state description. The post-unlock pointer no longer carries NON_OWN_REF, but remains readable because the load is rewritten to use BPF_PROBE_MEM. Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20260904084325.52250-7-memxor@gmail.com Signed-off-by: Alexei Starovoitov --- arch/mips/ingenic/Kconfig | 78 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 arch/mips/ingenic/Kconfig (limited to 'arch/mips/ingenic') diff --git a/arch/mips/ingenic/Kconfig b/arch/mips/ingenic/Kconfig new file mode 100644 index 000000000..f595b339a --- /dev/null +++ b/arch/mips/ingenic/Kconfig @@ -0,0 +1,78 @@ +# SPDX-License-Identifier: GPL-2.0 + +config MACH_INGENIC_GENERIC + bool + select MACH_INGENIC + select MACH_JZ4740 + select MACH_JZ4725B + select MACH_JZ4770 + select MACH_JZ4780 + select MACH_X1000 + select MACH_X1830 + +choice + prompt "Machine type" + depends on MACH_INGENIC_SOC + default INGENIC_GENERIC_BOARD + +config INGENIC_GENERIC_BOARD + bool "Generic board" + select MACH_INGENIC_GENERIC + +config JZ4740_QI_LB60 + bool "Qi Hardware Ben NanoNote" + select MACH_JZ4740 + +config JZ4740_RS90 + bool "YLM RetroMini (RS-90)" + select MACH_JZ4725B + +config JZ4770_GCW0 + bool "Game Consoles Worldwide GCW Zero" + select MACH_JZ4770 + +config JZ4780_CI20 + bool "MIPS Creator CI20" + select MACH_JZ4780 + +config X1000_CU1000_NEO + bool "YSH & ATIL CU1000 Module with Neo backplane" + select MACH_X1000 + +config X1830_CU1830_NEO + bool "YSH & ATIL CU1830 Module with Neo backplane" + select MACH_X1830 + +endchoice + +config MACH_JZ4725B + bool + select SYS_HAS_CPU_MIPS32_R1 + +config MACH_JZ4740 + bool + select SYS_HAS_CPU_MIPS32_R1 + +config MACH_JZ4770 + bool + select MIPS_CPU_SCACHE + select SYS_HAS_CPU_MIPS32_R2 + select SYS_SUPPORTS_HIGHMEM + +config MACH_JZ4780 + bool + select MIPS_CPU_SCACHE + select SYS_HAS_CPU_MIPS32_R2 + select SYS_SUPPORTS_HIGHMEM + +config MACH_X1000 + bool + select MIPS_CPU_SCACHE + select SYS_HAS_CPU_MIPS32_R2 + select SYS_SUPPORTS_HIGHMEM + +config MACH_X1830 + bool + select MIPS_CPU_SCACHE + select SYS_HAS_CPU_MIPS32_R2 + select SYS_SUPPORTS_HIGHMEM -- cgit v1.3.1