selftests/bpf: Reject graph kptr use after RCU unlockgrafted

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 <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904084325.52250-7-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

1 files changed, 152 insertions, 0 deletions

diff --git a/drivers/clk/rockchip/Kconfig b/drivers/clk/rockchip/Kconfig
new file mode 100644
index 000000000..85133498f
--- /dev/null
+++ b/drivers/clk/rockchip/Kconfig
@@ -0,0 +1,152 @@
+# SPDX-License-Identifier: GPL-2.0
+# common clock support for ROCKCHIP SoC family.
+
+config COMMON_CLK_ROCKCHIP
+	bool "Rockchip clock controller common support"
+	depends on ARCH_ROCKCHIP || COMPILE_TEST
+	default ARCH_ROCKCHIP
+	help
+	  Say y here to enable common clock controller for Rockchip platforms.
+
+if COMMON_CLK_ROCKCHIP
+config CLK_PX30
+	bool "Rockchip PX30 clock controller support"
+	depends on ARM64 || COMPILE_TEST
+	default y
+	help
+	  Build the driver for PX30 Clock Driver.
+
+config CLK_RV1103B
+	bool "Rockchip RV1103B clock controller support"
+	depends on ARM || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RV1103B Clock Driver.
+
+config CLK_RV110X
+	bool "Rockchip RV110x clock controller support"
+	depends on ARM || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RV110x Clock Driver.
+
+config CLK_RV1126
+	bool "Rockchip RV1126 clock controller support"
+	depends on ARM || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RV1126 Clock Driver.
+
+config CLK_RV1126B
+	bool "Rockchip RV1126B clock controller support"
+	depends on ARM64 || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RV1126B Clock Driver.
+
+config CLK_RK3036
+	bool "Rockchip RK3036 clock controller support"
+	depends on ARM || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RK3036 Clock Driver.
+
+config CLK_RK312X
+	bool "Rockchip RK312x clock controller support"
+	depends on ARM || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RK312x Clock Driver.
+
+config CLK_RK3188
+	bool "Rockchip RK3188 clock controller support"
+	depends on ARM || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RK3188 Clock Driver.
+
+config CLK_RK322X
+	bool "Rockchip RK322x clock controller support"
+	depends on ARM || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RK322x Clock Driver.
+
+config CLK_RK3288
+	bool "Rockchip RK3288 clock controller support"
+	depends on ARM || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RK3288 Clock Driver.
+
+config CLK_RK3308
+	bool "Rockchip RK3308 clock controller support"
+	depends on ARM64 || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RK3308 Clock Driver.
+
+config CLK_RK3328
+	bool "Rockchip RK3328 clock controller support"
+	depends on ARM64 || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RK3328 Clock Driver.
+
+config CLK_RK3368
+	bool "Rockchip RK3368 clock controller support"
+	depends on ARM64 || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RK3368 Clock Driver.
+
+config CLK_RK3399
+	bool "Rockchip RK3399 clock controller support"
+	depends on ARM64 || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RK3399 Clock Driver.
+
+config CLK_RK3506
+	bool "Rockchip RK3506 clock controller support"
+	depends on ARM || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RK3506 Clock Driver.
+
+config CLK_RK3528
+	bool "Rockchip RK3528 clock controller support"
+	depends on ARM64 || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RK3528 Clock Controller.
+
+config CLK_RK3562
+	bool "Rockchip RK3562 clock controller support"
+	depends on ARM64 || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RK3562 Clock Controller.
+
+config CLK_RK3568
+	bool "Rockchip RK3568 clock controller support"
+	depends on ARM64 || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RK3568 Clock Driver.
+
+config CLK_RK3576
+	bool "Rockchip RK3576 clock controller support"
+	depends on ARM64 || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RK3576 Clock Driver.
+
+config CLK_RK3588
+	bool "Rockchip RK3588 clock controller support"
+	depends on ARM64 || COMPILE_TEST
+	default y
+	help
+	  Build the driver for RK3588 Clock Driver.
+
+endif