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/sophgo/Kconfig | 88 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 88 insertions(+) create mode 100644 drivers/pinctrl/sophgo/Kconfig (limited to 'drivers/pinctrl/sophgo/Kconfig') diff --git a/drivers/pinctrl/sophgo/Kconfig b/drivers/pinctrl/sophgo/Kconfig new file mode 100644 index 000000000..9b0a3a475 --- /dev/null +++ b/drivers/pinctrl/sophgo/Kconfig @@ -0,0 +1,88 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# Sophgo SoC PINCTRL drivers +# + +config PINCTRL_SOPHGO_COMMON + tristate + select GENERIC_PINCTRL_GROUPS + select GENERIC_PINMUX_FUNCTIONS + select GENERIC_PINCONF + +config PINCTRL_SOPHGO_CV18XX_OPS + bool + +config PINCTRL_SOPHGO_CV1800B + tristate "Sophgo CV1800B SoC Pinctrl driver" + depends on ARCH_SOPHGO || COMPILE_TEST + depends on OF + select PINCTRL_SOPHGO_COMMON + select PINCTRL_SOPHGO_CV18XX_OPS + help + Say Y to select the pinctrl driver for CV1800B SoC. + This pin controller allows selecting the mux function for + each pin. This driver can also be built as a module called + pinctrl-cv1800b. + +config PINCTRL_SOPHGO_CV1812H + tristate "Sophgo CV1812H SoC Pinctrl driver" + depends on ARCH_SOPHGO || COMPILE_TEST + depends on OF + select PINCTRL_SOPHGO_COMMON + select PINCTRL_SOPHGO_CV18XX_OPS + help + Say Y to select the pinctrl driver for CV1812H SoC. + This pin controller allows selecting the mux function for + each pin. This driver can also be built as a module called + pinctrl-cv1812h. + +config PINCTRL_SOPHGO_SG2000 + tristate "Sophgo SG2000 SoC Pinctrl driver" + depends on ARCH_SOPHGO || COMPILE_TEST + depends on OF + select PINCTRL_SOPHGO_COMMON + select PINCTRL_SOPHGO_CV18XX_OPS + help + Say Y to select the pinctrl driver for SG2000 SoC. + This pin controller allows selecting the mux function for + each pin. This driver can also be built as a module called + pinctrl-sg2000. + +config PINCTRL_SOPHGO_SG2002 + tristate "Sophgo SG2002 SoC Pinctrl driver" + depends on ARCH_SOPHGO || COMPILE_TEST + depends on OF + select PINCTRL_SOPHGO_COMMON + select PINCTRL_SOPHGO_CV18XX_OPS + help + Say Y to select the pinctrl driver for SG2002 SoC. + This pin controller allows selecting the mux function for + each pin. This driver can also be built as a module called + pinctrl-sg2002. + +config PINCTRL_SOPHGO_SG2042_OPS + bool + +config PINCTRL_SOPHGO_SG2042 + tristate "Sophgo SG2042 SoC Pinctrl driver" + depends on ARCH_SOPHGO || COMPILE_TEST + depends on OF + select PINCTRL_SOPHGO_COMMON + select PINCTRL_SOPHGO_SG2042_OPS + help + Say Y to select the pinctrl driver for SG2042 SoC. + This pin controller allows selecting the mux function for + each pin. This driver can also be built as a module called + pinctrl-sg2042. + +config PINCTRL_SOPHGO_SG2044 + tristate "Sophgo SG2044 SoC Pinctrl driver" + depends on ARCH_SOPHGO || COMPILE_TEST + depends on OF + select PINCTRL_SOPHGO_COMMON + select PINCTRL_SOPHGO_SG2042_OPS + help + Say Y to select the pinctrl driver for SG2044 SoC. + This pin controller allows selecting the mux function for + each pin. This driver can also be built as a module called + pinctrl-sg2044. -- cgit v1.3.1