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/imx/Kconfig | 131 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 131 insertions(+) create mode 100644 drivers/clk/imx/Kconfig (limited to 'drivers/clk/imx/Kconfig') diff --git a/drivers/clk/imx/Kconfig b/drivers/clk/imx/Kconfig new file mode 100644 index 000000000..b292e7ca5 --- /dev/null +++ b/drivers/clk/imx/Kconfig @@ -0,0 +1,131 @@ +# SPDX-License-Identifier: GPL-2.0 +# common clock support for NXP i.MX SoC family. +config MXC_CLK + tristate "IMX clock" + depends on ARCH_MXC || COMPILE_TEST + +config MXC_CLK_SCU + tristate + +config CLK_IMX1 + def_bool SOC_IMX1 + select MXC_CLK + +config CLK_IMX25 + def_bool SOC_IMX25 + select MXC_CLK + +config CLK_IMX27 + def_bool SOC_IMX27 + select MXC_CLK + +config CLK_IMX31 + def_bool SOC_IMX31 + select MXC_CLK + +config CLK_IMX35 + def_bool SOC_IMX35 + select MXC_CLK + +config CLK_IMX5 + def_bool SOC_IMX5 + select MXC_CLK + +config CLK_IMX6Q + def_bool SOC_IMX6Q + select MXC_CLK + +config CLK_IMX6SL + def_bool SOC_IMX6SL + select MXC_CLK + +config CLK_IMX6SLL + def_bool SOC_IMX6SLL + select MXC_CLK + +config CLK_IMX6SX + def_bool SOC_IMX6SX + select MXC_CLK + +config CLK_IMX6UL + def_bool SOC_IMX6UL + select MXC_CLK + +config CLK_IMX7D + def_bool SOC_IMX7D + select MXC_CLK + +config CLK_IMX7ULP + def_bool SOC_IMX7ULP + select MXC_CLK + +config CLK_VF610 + def_bool SOC_VF610 + select MXC_CLK + +config CLK_IMX8MM + tristate "IMX8MM CCM Clock Driver" + depends on ARCH_MXC || COMPILE_TEST + select MXC_CLK + help + Build the driver for i.MX8MM CCM Clock Driver + +config CLK_IMX8MN + tristate "IMX8MN CCM Clock Driver" + depends on ARCH_MXC || COMPILE_TEST + select MXC_CLK + help + Build the driver for i.MX8MN CCM Clock Driver + +config CLK_IMX8MP + tristate "IMX8MP CCM Clock Driver" + depends on ARCH_MXC || COMPILE_TEST + select MXC_CLK + select AUXILIARY_BUS if RESET_CONTROLLER + help + Build the driver for i.MX8MP CCM Clock Driver + +config CLK_IMX8MQ + tristate "IMX8MQ CCM Clock Driver" + depends on ARCH_MXC || COMPILE_TEST + select MXC_CLK + help + Build the driver for i.MX8MQ CCM Clock Driver + +config CLK_IMX8QXP + tristate "IMX8QXP SCU Clock" + depends on (ARCH_MXC && ARM64) || COMPILE_TEST + depends on IMX_SCU && HAVE_ARM_SMCCC + select MXC_CLK_SCU + select MXC_CLK + help + Build the driver for IMX8QXP SCU based clocks. + +config CLK_IMX8ULP + tristate "IMX8ULP CCM Clock Driver" + depends on ARCH_MXC || COMPILE_TEST + select MXC_CLK + select AUXILIARY_BUS + help + Build the driver for i.MX8ULP CCM Clock Driver + +config CLK_IMX93 + tristate "IMX93 CCM Clock Driver" + depends on ARCH_MXC || COMPILE_TEST + select MXC_CLK + help + Build the driver for i.MX93 CCM Clock Driver + +config CLK_IMX95_BLK_CTL + tristate "IMX95 Clock Driver for BLK CTL" + depends on ARCH_MXC || COMPILE_TEST + select MXC_CLK + help + Build the clock driver for i.MX95 BLK CTL + +config CLK_IMXRT1050 + tristate "IMXRT1050 CCM Clock Driver" + depends on SOC_IMXRT || COMPILE_TEST + select MXC_CLK + help + Build the driver for i.MXRT1050 CCM Clock Driver -- cgit v1.3.1