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/arm/mach-omap1/Makefile | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 arch/arm/mach-omap1/Makefile (limited to 'arch/arm/mach-omap1/Makefile') diff --git a/arch/arm/mach-omap1/Makefile b/arch/arm/mach-omap1/Makefile new file mode 100644 index 000000000..d9e251ea4 --- /dev/null +++ b/arch/arm/mach-omap1/Makefile @@ -0,0 +1,41 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for the linux kernel. +# + +# Common support +obj-y := io.o id.o sram-init.o sram.o time.o irq.o mux.o flash.o \ + serial.o devices.o dma.o omap-dma.o fb.o +obj-y += clock.o clock_data.o opp_data.o reset.o pm_bus.o timer.o + +ifneq ($(CONFIG_SND_SOC_OMAP_MCBSP),) +obj-y += mcbsp.o +endif + +obj-$(CONFIG_OMAP_32K_TIMER) += timer32k.o + +# OCPI interconnect support for 1710, 1610 and 5912 +obj-$(CONFIG_ARCH_OMAP16XX) += ocpi.o + +# Power Management +obj-$(CONFIG_PM) += pm.o sleep.o + +i2c-omap-$(CONFIG_I2C_OMAP) := i2c.o +obj-y += $(i2c-omap-m) $(i2c-omap-y) + +led-y := leds.o + +usb-fs-$(CONFIG_USB_SUPPORT) := usb.o +obj-y += $(usb-fs-m) $(usb-fs-y) + +# Specific board support +obj-$(CONFIG_MACH_OMAP_OSK) += board-osk.o +obj-$(CONFIG_MACH_OMAP_PALMTE) += board-palmte.o +obj-$(CONFIG_MACH_NOKIA770) += board-nokia770.o +obj-$(CONFIG_MACH_AMS_DELTA) += board-ams-delta.o ams-delta-fiq.o \ + ams-delta-fiq-handler.o +obj-$(CONFIG_MACH_SX1) += board-sx1.o board-sx1-mmc.o + +# GPIO +obj-$(CONFIG_ARCH_OMAP15XX) += gpio15xx.o +obj-$(CONFIG_ARCH_OMAP16XX) += gpio16xx.o -- cgit v1.3.1