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/actions/Kconfig | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 drivers/clk/actions/Kconfig (limited to 'drivers/clk/actions/Kconfig') diff --git a/drivers/clk/actions/Kconfig b/drivers/clk/actions/Kconfig new file mode 100644 index 000000000..068639199 --- /dev/null +++ b/drivers/clk/actions/Kconfig @@ -0,0 +1,28 @@ +# SPDX-License-Identifier: GPL-2.0-only +config CLK_ACTIONS + bool "Clock driver for Actions Semi SoCs" + depends on ARCH_ACTIONS || COMPILE_TEST + select REGMAP_MMIO + select RESET_CONTROLLER + default ARCH_ACTIONS + +if CLK_ACTIONS + +# SoC Drivers + +config CLK_OWL_S500 + bool "Support for the Actions Semi OWL S500 clocks" + depends on ARCH_ACTIONS || COMPILE_TEST + default ARCH_ACTIONS + +config CLK_OWL_S700 + bool "Support for the Actions Semi OWL S700 clocks" + depends on (ARM64 && ARCH_ACTIONS) || COMPILE_TEST + default ARM64 && ARCH_ACTIONS + +config CLK_OWL_S900 + bool "Support for the Actions Semi OWL S900 clocks" + depends on (ARM64 && ARCH_ACTIONS) || COMPILE_TEST + default ARM64 && ARCH_ACTIONS + +endif -- cgit v1.3.1