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/pinctrl/uniphier/Kconfig | 52 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 drivers/pinctrl/uniphier/Kconfig (limited to 'drivers/pinctrl/uniphier/Kconfig') diff --git a/drivers/pinctrl/uniphier/Kconfig b/drivers/pinctrl/uniphier/Kconfig new file mode 100644 index 000000000..5e3de0df7 --- /dev/null +++ b/drivers/pinctrl/uniphier/Kconfig @@ -0,0 +1,52 @@ +# SPDX-License-Identifier: GPL-2.0-only +menuconfig PINCTRL_UNIPHIER + bool "UniPhier SoC pinctrl drivers" + depends on ARCH_UNIPHIER || COMPILE_TEST + depends on OF && MFD_SYSCON + default ARCH_UNIPHIER + select PINMUX + select GENERIC_PINCONF + +if PINCTRL_UNIPHIER + +config PINCTRL_UNIPHIER_LD4 + bool "UniPhier LD4 SoC pinctrl driver" + default ARM + +config PINCTRL_UNIPHIER_PRO4 + bool "UniPhier Pro4 SoC pinctrl driver" + default ARM + +config PINCTRL_UNIPHIER_SLD8 + bool "UniPhier sLD8 SoC pinctrl driver" + default ARM + +config PINCTRL_UNIPHIER_PRO5 + bool "UniPhier Pro5 SoC pinctrl driver" + default ARM + +config PINCTRL_UNIPHIER_PXS2 + bool "UniPhier PXs2 SoC pinctrl driver" + default ARM + +config PINCTRL_UNIPHIER_LD6B + bool "UniPhier LD6b SoC pinctrl driver" + default ARM + +config PINCTRL_UNIPHIER_LD11 + bool "UniPhier LD11 SoC pinctrl driver" + default ARM64 + +config PINCTRL_UNIPHIER_LD20 + bool "UniPhier LD20 SoC pinctrl driver" + default ARM64 + +config PINCTRL_UNIPHIER_PXS3 + bool "UniPhier PXs3 SoC pinctrl driver" + default ARM64 + +config PINCTRL_UNIPHIER_NX1 + bool "UniPhier NX1 SoC pinctrl driver" + default ARM64 + +endif -- cgit v1.3.1