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/meson/Kconfig | 92 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 92 insertions(+) create mode 100644 drivers/pinctrl/meson/Kconfig (limited to 'drivers/pinctrl/meson/Kconfig') diff --git a/drivers/pinctrl/meson/Kconfig b/drivers/pinctrl/meson/Kconfig new file mode 100644 index 000000000..1af4fc320 --- /dev/null +++ b/drivers/pinctrl/meson/Kconfig @@ -0,0 +1,92 @@ +# SPDX-License-Identifier: GPL-2.0-only +menuconfig PINCTRL_MESON + tristate "Amlogic SoC pinctrl drivers" + depends on ARCH_MESON || COMPILE_TEST + depends on OF + default ARCH_MESON + select PINMUX + select PINCONF + select GENERIC_PINCONF + select GPIOLIB + select REGMAP_MMIO + +if PINCTRL_MESON + +config PINCTRL_MESON8 + bool "Meson 8 SoC pinctrl driver" + depends on ARM || COMPILE_TEST + select PINCTRL_MESON8_PMX + default ARCH_MESON + +config PINCTRL_MESON8B + bool "Meson 8b SoC pinctrl driver" + depends on ARM || COMPILE_TEST + select PINCTRL_MESON8_PMX + default ARCH_MESON + +config PINCTRL_MESON_GXBB + tristate "Meson gxbb SoC pinctrl driver" + depends on ARM64 || COMPILE_TEST + select PINCTRL_MESON8_PMX + default ARCH_MESON + +config PINCTRL_MESON_GXL + tristate "Meson gxl SoC pinctrl driver" + depends on ARM64 || COMPILE_TEST + select PINCTRL_MESON8_PMX + default ARCH_MESON + +config PINCTRL_MESON8_PMX + tristate + +config PINCTRL_MESON_AXG + tristate "Meson axg Soc pinctrl driver" + depends on ARM64 || COMPILE_TEST + select PINCTRL_MESON_AXG_PMX + default ARCH_MESON + +config PINCTRL_MESON_AXG_PMX + tristate + +config PINCTRL_MESON_G12A + tristate "Meson g12a Soc pinctrl driver" + depends on ARM64 || COMPILE_TEST + select PINCTRL_MESON_AXG_PMX + default ARCH_MESON + +config PINCTRL_MESON_A1 + tristate "Meson a1 Soc pinctrl driver" + depends on ARM64 || COMPILE_TEST + select PINCTRL_MESON_AXG_PMX + default ARCH_MESON + +config PINCTRL_MESON_S4 + tristate "Meson s4 Soc pinctrl driver" + depends on ARM64 || COMPILE_TEST + select PINCTRL_MESON_AXG_PMX + default ARCH_MESON + +config PINCTRL_AMLOGIC_A4 + bool "AMLOGIC pincontrol" + depends on ARM64 || COMPILE_TEST + default ARCH_MESON + help + This is the driver for the pin controller found on Amlogic SoCs. + + This driver is simplify subsequent support for new amlogic SoCs, + to support new Amlogic SoCs, only need to add the corresponding dts file, + no additional binding header files or C file are added. + +config PINCTRL_AMLOGIC_C3 + tristate "Amlogic C3 SoC pinctrl driver" + depends on ARM64 || COMPILE_TEST + select PINCTRL_MESON_AXG_PMX + default ARCH_MESON + +config PINCTRL_AMLOGIC_T7 + tristate "Amlogic T7 SoC pinctrl driver" + depends on ARM64 || COMPILE_TEST + select PINCTRL_MESON_AXG_PMX + default ARCH_MESON + +endif -- cgit v1.3.1