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/ralink/Makefile | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 arch/mips/ralink/Makefile (limited to 'arch/mips/ralink/Makefile') diff --git a/arch/mips/ralink/Makefile b/arch/mips/ralink/Makefile new file mode 100644 index 000000000..0c109eae1 --- /dev/null +++ b/arch/mips/ralink/Makefile @@ -0,0 +1,26 @@ +# SPDX-License-Identifier: GPL-2.0-only +# Makefile for the Ralink common stuff +# +# Copyright (C) 2009-2011 Gabor Juhos +# Copyright (C) 2013 John Crispin + +obj-y := prom.o of.o reset.o + +ifndef CONFIG_MIPS_GIC + obj-y += clk.o timer.o +endif + +obj-$(CONFIG_RALINK_ILL_ACC) += ill_acc.o + +obj-$(CONFIG_IRQ_INTC) += irq.o +obj-$(CONFIG_MIPS_GIC) += irq-gic.o timer-gic.o + +obj-$(CONFIG_SOC_RT288X) += rt288x.o +obj-$(CONFIG_SOC_RT305X) += rt305x.o +obj-$(CONFIG_SOC_RT3883) += rt3883.o +obj-$(CONFIG_SOC_MT7620) += mt7620.o +obj-$(CONFIG_SOC_MT7621) += mt7621.o + +obj-$(CONFIG_EARLY_PRINTK) += early_printk.o + +obj-$(CONFIG_DEBUG_FS) += bootrom.o -- cgit v1.3.1