From 6668ed271eaefaa63e686bdfbedaeb7b8e492722 Mon Sep 17 00:00:00 2001
From: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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 <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904084325.52250-7-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
---
 drivers/clk/sunxi-ng/Makefile | 81 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 drivers/clk/sunxi-ng/Makefile

(limited to 'drivers/clk/sunxi-ng/Makefile')

diff --git a/drivers/clk/sunxi-ng/Makefile b/drivers/clk/sunxi-ng/Makefile
new file mode 100644
index 000000000..a1c4087d7
--- /dev/null
+++ b/drivers/clk/sunxi-ng/Makefile
@@ -0,0 +1,81 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-$(CONFIG_SUNXI_CCU)		+= sunxi-ccu.o
+
+# Common objects
+sunxi-ccu-y			+= ccu_common.o
+sunxi-ccu-y			+= ccu_mmc_timing.o
+sunxi-ccu-y			+= ccu_reset.o
+
+# Base clock types
+sunxi-ccu-y			+= ccu_div.o
+sunxi-ccu-y			+= ccu_frac.o
+sunxi-ccu-y			+= ccu_gate.o
+sunxi-ccu-y			+= ccu_mux.o
+sunxi-ccu-y			+= ccu_mult.o
+sunxi-ccu-y			+= ccu_phase.o
+sunxi-ccu-y			+= ccu_sdm.o
+
+# Multi-factor clocks
+sunxi-ccu-y			+= ccu_nk.o
+sunxi-ccu-y			+= ccu_nkm.o
+sunxi-ccu-y			+= ccu_nkmp.o
+sunxi-ccu-y			+= ccu_nm.o
+sunxi-ccu-y			+= ccu_mp.o
+
+# SoC support
+obj-$(CONFIG_SUNIV_F1C100S_CCU)	+= suniv-f1c100s-ccu.o
+obj-$(CONFIG_SUN20I_D1_CCU)	+= sun20i-d1-ccu.o
+obj-$(CONFIG_SUN20I_D1_R_CCU)	+= sun20i-d1-r-ccu.o
+obj-$(CONFIG_SUN50I_A64_CCU)	+= sun50i-a64-ccu.o
+obj-$(CONFIG_SUN50I_A100_CCU)	+= sun50i-a100-ccu.o
+obj-$(CONFIG_SUN50I_A100_R_CCU)	+= sun50i-a100-r-ccu.o
+obj-$(CONFIG_SUN50I_H6_CCU)	+= sun50i-h6-ccu.o
+obj-$(CONFIG_SUN50I_H6_R_CCU)	+= sun50i-h6-r-ccu.o
+obj-$(CONFIG_SUN50I_H616_CCU)	+= sun50i-h616-ccu.o
+obj-$(CONFIG_SUN55I_A523_CCU)	+= sun55i-a523-ccu.o
+obj-$(CONFIG_SUN55I_A523_MCU_CCU)	+= sun55i-a523-mcu-ccu.o
+obj-$(CONFIG_SUN55I_A523_R_CCU)	+= sun55i-a523-r-ccu.o
+obj-$(CONFIG_SUN4I_A10_CCU)	+= sun4i-a10-ccu.o
+obj-$(CONFIG_SUN5I_CCU)		+= sun5i-ccu.o
+obj-$(CONFIG_SUN6I_A31_CCU)	+= sun6i-a31-ccu.o
+obj-$(CONFIG_SUN6I_RTC_CCU)	+= sun6i-rtc-ccu.o
+obj-$(CONFIG_SUN8I_A23_CCU)	+= sun8i-a23-ccu.o
+obj-$(CONFIG_SUN8I_A33_CCU)	+= sun8i-a33-ccu.o
+obj-$(CONFIG_SUN8I_A83T_CCU)	+= sun8i-a83t-ccu.o
+obj-$(CONFIG_SUN8I_H3_CCU)	+= sun8i-h3-ccu.o
+obj-$(CONFIG_SUN8I_R40_CCU)	+= sun8i-r40-ccu.o
+obj-$(CONFIG_SUN8I_V3S_CCU)	+= sun8i-v3s-ccu.o
+obj-$(CONFIG_SUN8I_DE2_CCU)	+= sun8i-de2-ccu.o
+obj-$(CONFIG_SUN8I_R_CCU)	+= sun8i-r-ccu.o
+obj-$(CONFIG_SUN9I_A80_CCU)	+= sun9i-a80-ccu.o
+obj-$(CONFIG_SUN9I_A80_CCU)	+= sun9i-a80-de-ccu.o
+obj-$(CONFIG_SUN9I_A80_CCU)	+= sun9i-a80-usb-ccu.o
+
+suniv-f1c100s-ccu-y		+= ccu-suniv-f1c100s.o
+sun20i-d1-ccu-y			+= ccu-sun20i-d1.o
+sun20i-d1-r-ccu-y		+= ccu-sun20i-d1-r.o
+sun50i-a64-ccu-y		+= ccu-sun50i-a64.o
+sun50i-a100-ccu-y		+= ccu-sun50i-a100.o
+sun50i-a100-r-ccu-y		+= ccu-sun50i-a100-r.o
+sun50i-h6-ccu-y			+= ccu-sun50i-h6.o
+sun50i-h6-r-ccu-y		+= ccu-sun50i-h6-r.o
+sun50i-h616-ccu-y		+= ccu-sun50i-h616.o
+sun55i-a523-ccu-y		+= ccu-sun55i-a523.o
+sun55i-a523-mcu-ccu-y		+= ccu-sun55i-a523-mcu.o
+sun55i-a523-r-ccu-y		+= ccu-sun55i-a523-r.o
+sun4i-a10-ccu-y			+= ccu-sun4i-a10.o
+sun5i-ccu-y			+= ccu-sun5i.o
+sun6i-a31-ccu-y			+= ccu-sun6i-a31.o
+sun6i-rtc-ccu-y			+= ccu-sun6i-rtc.o
+sun8i-a23-ccu-y			+= ccu-sun8i-a23.o
+sun8i-a33-ccu-y			+= ccu-sun8i-a33.o
+sun8i-a83t-ccu-y		+= ccu-sun8i-a83t.o
+sun8i-h3-ccu-y			+= ccu-sun8i-h3.o
+sun8i-r40-ccu-y			+= ccu-sun8i-r40.o
+sun8i-v3s-ccu-y			+= ccu-sun8i-v3s.o
+sun8i-de2-ccu-y			+= ccu-sun8i-de2.o
+sun8i-r-ccu-y			+= ccu-sun8i-r.o
+sun9i-a80-ccu-y			+= ccu-sun9i-a80.o
+sun9i-a80-de-ccu-y		+= ccu-sun9i-a80-de.o
+sun9i-a80-usb-ccu-y		+= ccu-sun9i-a80-usb.o
-- 
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