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, 87 insertions, 0 deletions

diff --git a/sound/soc/Makefile b/sound/soc/Makefile
new file mode 100644
index 000000000..21d840676
--- /dev/null
+++ b/sound/soc/Makefile
@@ -0,0 +1,87 @@
+# SPDX-License-Identifier: GPL-2.0
+snd-soc-core-y := soc-core.o soc-dapm.o soc-jack.o soc-utils.o soc-dai.o soc-component.o
+snd-soc-core-y += soc-pcm.o soc-devres.o soc-ops.o soc-link.o soc-card.o
+snd-soc-core-$(CONFIG_SND_SOC_COMPRESS) += soc-compress.o
+
+ifneq ($(CONFIG_SND_SOC_TOPOLOGY),)
+snd-soc-core-y += soc-topology.o
+endif
+
+ifneq ($(CONFIG_SND_SOC_TOPOLOGY_KUNIT_TEST),)
+# snd-soc-test-y := soc-topology-test.o
+obj-$(CONFIG_SND_SOC_TOPOLOGY_KUNIT_TEST) += soc-topology-test.o
+endif
+
+ifneq ($(CONFIG_SND_SOC_CARD_KUNIT_TEST),)
+obj-$(CONFIG_SND_SOC_CARD_KUNIT_TEST) += soc-card-test.o
+endif
+
+ifneq ($(CONFIG_SND_SOC_UTILS_KUNIT_TEST),)
+# snd-soc-test-y := soc-utils-test.o
+obj-$(CONFIG_SND_SOC_UTILS_KUNIT_TEST) += soc-utils-test.o
+endif
+
+ifneq ($(CONFIG_SND_SOC_OPS_KUNIT_TEST),)
+obj-$(CONFIG_SND_SOC_OPS_KUNIT_TEST) += soc-ops-test.o
+endif
+
+ifneq ($(CONFIG_SND_SOC_GENERIC_DMAENGINE_PCM),)
+snd-soc-core-y += soc-generic-dmaengine-pcm.o
+endif
+
+ifneq ($(CONFIG_SND_SOC_AC97_BUS),)
+snd-soc-core-y += soc-ac97.o
+endif
+
+ifneq ($(CONFIG_SND_SOC_ACPI),)
+snd-soc-acpi-y := soc-acpi.o
+endif
+
+obj-$(CONFIG_SND_SOC_ACPI) += snd-soc-acpi.o
+
+obj-$(CONFIG_SND_SOC_USB) += soc-usb.o
+
+obj-$(CONFIG_SND_SOC)	+= snd-soc-core.o
+obj-$(CONFIG_SND_SOC)	+= codecs/
+obj-$(CONFIG_SND_SOC)	+= generic/
+obj-$(CONFIG_SND_SOC)	+= apple/
+obj-$(CONFIG_SND_SOC)	+= adi/
+obj-$(CONFIG_SND_SOC)	+= amd/
+obj-$(CONFIG_SND_SOC)	+= atmel/
+obj-$(CONFIG_SND_SOC)	+= au1x/
+obj-$(CONFIG_SND_SOC)	+= bcm/
+obj-$(CONFIG_SND_SOC)	+= cirrus/
+obj-$(CONFIG_SND_SOC)	+= dwc/
+obj-$(CONFIG_SND_SOC)	+= fsl/
+obj-$(CONFIG_SND_SOC)	+= google/
+obj-$(CONFIG_SND_SOC)	+= hisilicon/
+obj-$(CONFIG_SND_SOC)	+= jz4740/
+obj-$(CONFIG_SND_SOC)	+= loongson/
+obj-$(CONFIG_SND_SOC)	+= img/
+obj-$(CONFIG_SND_SOC)	+= intel/
+obj-$(CONFIG_SND_SOC)	+= mediatek/
+obj-$(CONFIG_SND_SOC)	+= meson/
+obj-$(CONFIG_SND_SOC)	+= mxs/
+obj-$(CONFIG_SND_SOC)	+= kirkwood/
+obj-$(CONFIG_SND_SOC)	+= pxa/
+obj-$(CONFIG_SND_SOC)	+= qcom/
+obj-$(CONFIG_SND_SOC)	+= renesas/
+obj-$(CONFIG_SND_SOC)	+= rockchip/
+obj-$(CONFIG_SND_SOC)	+= samsung/
+obj-$(CONFIG_SND_SOC)	+= sdca/
+obj-$(CONFIG_SND_SOC)	+= sof/
+obj-$(CONFIG_SND_SOC)   += sophgo/
+obj-$(CONFIG_SND_SOC)	+= spacemit/
+obj-$(CONFIG_SND_SOC)	+= spear/
+obj-$(CONFIG_SND_SOC)	+= sprd/
+obj-$(CONFIG_SND_SOC)	+= starfive/
+obj-$(CONFIG_SND_SOC)	+= sti/
+obj-$(CONFIG_SND_SOC)	+= stm/
+obj-$(CONFIG_SND_SOC)	+= sunxi/
+obj-$(CONFIG_SND_SOC)	+= tegra/
+obj-$(CONFIG_SND_SOC)	+= ti/
+obj-$(CONFIG_SND_SOC)	+= uniphier/
+obj-$(CONFIG_SND_SOC)	+= ux500/
+obj-$(CONFIG_SND_SOC)	+= xilinx/
+obj-$(CONFIG_SND_SOC)	+= xtensa/
+obj-$(CONFIG_SND_SOC)	+= sdw_utils/