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, 49 insertions, 0 deletions

diff --git a/sound/soc/qcom/Makefile b/sound/soc/qcom/Makefile
new file mode 100644
index 000000000..985ce2ae2
--- /dev/null
+++ b/sound/soc/qcom/Makefile
@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: GPL-2.0
+# Platform
+snd-soc-lpass-cpu-y := lpass-cpu.o
+snd-soc-lpass-cdc-dma-y := lpass-cdc-dma.o
+snd-soc-lpass-hdmi-y := lpass-hdmi.o
+snd-soc-lpass-platform-y := lpass-platform.o
+snd-soc-lpass-ipq806x-y := lpass-ipq806x.o
+snd-soc-lpass-apq8016-y := lpass-apq8016.o
+snd-soc-lpass-sc7180-y := lpass-sc7180.o
+snd-soc-lpass-sc7280-y := lpass-sc7280.o
+
+obj-$(CONFIG_SND_SOC_LPASS_CPU) += snd-soc-lpass-cpu.o
+obj-$(CONFIG_SND_SOC_LPASS_CDC_DMA) += snd-soc-lpass-cdc-dma.o
+obj-$(CONFIG_SND_SOC_LPASS_HDMI) += snd-soc-lpass-hdmi.o
+obj-$(CONFIG_SND_SOC_LPASS_PLATFORM) += snd-soc-lpass-platform.o
+obj-$(CONFIG_SND_SOC_LPASS_IPQ806X) += snd-soc-lpass-ipq806x.o
+obj-$(CONFIG_SND_SOC_LPASS_APQ8016) += snd-soc-lpass-apq8016.o
+obj-$(CONFIG_SND_SOC_LPASS_SC7180) += snd-soc-lpass-sc7180.o
+obj-$(CONFIG_SND_SOC_LPASS_SC7280) += snd-soc-lpass-sc7280.o
+
+# Machine
+snd-soc-storm-y := storm.o
+snd-soc-apq8016-sbc-y := apq8016_sbc.o
+snd-soc-apq8096-y := apq8096.o
+snd-soc-sc7180-y := sc7180.o
+snd-soc-sc7280-y := sc7280.o
+snd-soc-sdm845-y := sdm845.o
+snd-soc-sm8250-y := sm8250.o
+snd-soc-sc8280xp-y := sc8280xp.o
+snd-soc-qcom-common-y := common.o
+snd-soc-qcom-sdw-y := sdw.o
+snd-soc-x1e80100-y := x1e80100.o
+snd-soc-qcom-offload-utils-objs := usb_offload_utils.o
+
+obj-$(CONFIG_SND_SOC_STORM) += snd-soc-storm.o
+obj-$(CONFIG_SND_SOC_APQ8016_SBC) += snd-soc-apq8016-sbc.o
+obj-$(CONFIG_SND_SOC_MSM8996) += snd-soc-apq8096.o
+obj-$(CONFIG_SND_SOC_SC7180) += snd-soc-sc7180.o
+obj-$(CONFIG_SND_SOC_SC7280) += snd-soc-sc7280.o
+obj-$(CONFIG_SND_SOC_SC8280XP) += snd-soc-sc8280xp.o
+obj-$(CONFIG_SND_SOC_SDM845) += snd-soc-sdm845.o
+obj-$(CONFIG_SND_SOC_SM8250) += snd-soc-sm8250.o
+obj-$(CONFIG_SND_SOC_QCOM_COMMON) += snd-soc-qcom-common.o
+obj-$(CONFIG_SND_SOC_QCOM_SDW) += snd-soc-qcom-sdw.o
+obj-$(CONFIG_SND_SOC_X1E80100) += snd-soc-x1e80100.o
+obj-$(CONFIG_SND_SOC_QCOM_OFFLOAD_UTILS) += snd-soc-qcom-offload-utils.o
+
+#DSP lib
+obj-$(CONFIG_SND_SOC_QDSP6) += qdsp6/