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/clk/tegra/Makefile | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 drivers/clk/tegra/Makefile (limited to 'drivers/clk/tegra/Makefile') diff --git a/drivers/clk/tegra/Makefile b/drivers/clk/tegra/Makefile new file mode 100644 index 000000000..a0715cdfc --- /dev/null +++ b/drivers/clk/tegra/Makefile @@ -0,0 +1,32 @@ +# SPDX-License-Identifier: GPL-2.0 +obj-y += clk.o +obj-y += clk-audio-sync.o +obj-y += clk-device.o +obj-y += clk-dfll.o +obj-y += clk-divider.o +obj-y += clk-periph.o +obj-y += clk-periph-fixed.o +obj-y += clk-periph-gate.o +obj-y += clk-pll.o +obj-y += clk-pll-out.o +obj-y += clk-sdmmc-mux.o +obj-y += clk-super.o +obj-y += clk-tegra-audio.o +obj-y += clk-tegra-periph.o +obj-y += clk-tegra-fixed.o +obj-y += clk-tegra-super-cclk.o +obj-y += clk-tegra-super-gen4.o +obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += clk-tegra20.o +obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += clk-tegra20-emc.o +obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += clk-tegra30.o +obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += clk-tegra20-emc.o +obj-$(CONFIG_ARCH_TEGRA_114_SOC) += clk-tegra114.o +obj-$(CONFIG_ARCH_TEGRA_124_SOC) += clk-tegra124.o +obj-$(CONFIG_TEGRA_CLK_DFLL) += clk-tegra124-dfll-fcpu.o +obj-$(CONFIG_TEGRA124_CLK_EMC) += clk-tegra124-emc.o +obj-$(CONFIG_ARCH_TEGRA_132_SOC) += clk-tegra124.o +obj-y += cvb.o +obj-$(CONFIG_ARCH_TEGRA_210_SOC) += clk-tegra210.o +obj-$(CONFIG_ARCH_TEGRA_210_SOC) += clk-tegra210-emc.o +obj-$(CONFIG_CLK_TEGRA_BPMP) += clk-bpmp.o +obj-y += clk-utils.o -- cgit v1.3.1