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 --- drivers/video/Makefile | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 drivers/video/Makefile (limited to 'drivers/video/Makefile') diff --git a/drivers/video/Makefile b/drivers/video/Makefile new file mode 100644 index 000000000..ffbac4387 --- /dev/null +++ b/drivers/video/Makefile @@ -0,0 +1,23 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-$(CONFIG_APERTURE_HELPERS) += aperture.o +obj-$(CONFIG_SCREEN_INFO) += screen_info.o +obj-$(CONFIG_STI_CORE) += sticore.o +obj-$(CONFIG_VGASTATE) += vgastate.o +obj-$(CONFIG_VIDEO) += cmdline.o nomodeset.o +obj-$(CONFIG_HDMI) += hdmi.o + +screen_info-y := screen_info_generic.o +screen_info-$(CONFIG_PCI) += screen_info_pci.o + +obj-$(CONFIG_VT) += console/ +obj-$(CONFIG_FB_STI) += console/ +obj-$(CONFIG_LOGO) += logo/ +obj-y += backlight/ + +obj-y += fbdev/ + +obj-$(CONFIG_VIDEOMODE_HELPERS) += display_timing.o videomode.o +ifeq ($(CONFIG_OF),y) +obj-$(CONFIG_VIDEOMODE_HELPERS) += of_display_timing.o of_videomode.o +endif -- cgit v1.3.1