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/sprd/Kconfig | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 drivers/clk/sprd/Kconfig (limited to 'drivers/clk/sprd/Kconfig') diff --git a/drivers/clk/sprd/Kconfig b/drivers/clk/sprd/Kconfig new file mode 100644 index 000000000..2f19c8d58 --- /dev/null +++ b/drivers/clk/sprd/Kconfig @@ -0,0 +1,32 @@ +# SPDX-License-Identifier: GPL-2.0-only +config SPRD_COMMON_CLK + tristate "Clock support for Spreadtrum SoCs" + depends on ARCH_SPRD || COMPILE_TEST + default ARCH_SPRD + select REGMAP_MMIO + +if SPRD_COMMON_CLK + +# SoC Drivers + +config SPRD_SC9860_CLK + tristate "Support for the Spreadtrum SC9860 clocks" + depends on (ARM64 && ARCH_SPRD) || COMPILE_TEST + default ARM64 && ARCH_SPRD + +config SPRD_SC9863A_CLK + tristate "Support for the Spreadtrum SC9863A clocks" + depends on (ARM64 && ARCH_SPRD) || COMPILE_TEST + default ARM64 && ARCH_SPRD + help + Support for the global clock controller on sc9863a devices. + Say Y if you want to use peripheral devices on sc9863a SoC. + +config SPRD_UMS512_CLK + tristate "Support for the Spreadtrum UMS512 clocks" + depends on (ARM64 && ARCH_SPRD) || COMPILE_TEST + default ARM64 && ARCH_SPRD + help + Support for the global clock controller on ums512 devices. + Say Y if you want to use peripheral devices on ums512 SoC. +endif -- cgit v1.3.1