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/pmdomain/sunxi/Kconfig | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 drivers/pmdomain/sunxi/Kconfig (limited to 'drivers/pmdomain/sunxi/Kconfig') diff --git a/drivers/pmdomain/sunxi/Kconfig b/drivers/pmdomain/sunxi/Kconfig new file mode 100644 index 000000000..858446594 --- /dev/null +++ b/drivers/pmdomain/sunxi/Kconfig @@ -0,0 +1,33 @@ +# SPDX-License-Identifier: GPL-2.0-only + +config SUN20I_PPU + tristate "Allwinner D1 PPU power domain driver" + depends on ARCH_SUNXI || COMPILE_TEST + depends on PM + default ARCH_SUNXI + select PM_GENERIC_DOMAINS + help + Say y to enable the PPU power domain driver. This is required + to enable power to certain peripherals, such as the display + engine. + +config SUN50I_H6_PRCM_PPU + tristate "Allwinner H6 PRCM power domain driver" + depends on ARCH_SUNXI || COMPILE_TEST + depends on PM + select PM_GENERIC_DOMAINS + help + Say y to enable the Allwinner H6/H616 PRCM power domain driver. + This is required to enable the Mali GPU in the H616 SoC, it is + optional for the H6. + +config SUN55I_PCK600 + tristate "Allwinner A523 PCK-600 power domain driver" + depends on ARCH_SUNXI || COMPILE_TEST + depends on PM + default ARCH_SUNXI + select PM_GENERIC_DOMAINS + help + Say y to enable the PCK-600 power domain driver. This is required + to enable power to certain peripherals, such as the display and + video engines. -- cgit v1.3.1