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, 82 insertions, 0 deletions

diff --git a/sound/pci/Makefile b/sound/pci/Makefile
new file mode 100644
index 000000000..9d5e8e12a
--- /dev/null
+++ b/sound/pci/Makefile
@@ -0,0 +1,82 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for ALSA
+# Copyright (c) 2001 by Jaroslav Kysela <perex@perex.cz>
+#
+
+snd-ad1889-y := ad1889.o
+snd-als300-y := als300.o
+snd-als4000-y := als4000.o
+snd-atiixp-y := atiixp.o
+snd-atiixp-modem-y := atiixp_modem.o
+snd-azt3328-y := azt3328.o
+snd-bt87x-y := bt87x.o
+snd-cmipci-y := cmipci.o
+snd-cs4281-y := cs4281.o
+snd-cs5530-y := cs5530.o
+snd-ens1370-y := ens1370.o ak4531_codec.o
+snd-ens1371-y := ens1371.o
+snd-es1938-y := es1938.o
+snd-es1968-y := es1968.o
+snd-fm801-y := fm801.o
+snd-intel8x0-y := intel8x0.o
+snd-intel8x0m-y := intel8x0m.o
+snd-maestro3-y := maestro3.o
+snd-rme32-y := rme32.o
+snd-rme96-y := rme96.o
+snd-sis7019-y := sis7019.o
+snd-sonicvibes-y := sonicvibes.o
+snd-via82xx-y := via82xx.o
+snd-via82xx-modem-y := via82xx_modem.o
+
+# Toplevel Module Dependency
+obj-$(CONFIG_SND_AD1889) += snd-ad1889.o
+obj-$(CONFIG_SND_ALS300) += snd-als300.o
+obj-$(CONFIG_SND_ALS4000) += snd-als4000.o
+obj-$(CONFIG_SND_ATIIXP) += snd-atiixp.o
+obj-$(CONFIG_SND_ATIIXP_MODEM) += snd-atiixp-modem.o
+obj-$(CONFIG_SND_AZT3328) += snd-azt3328.o
+obj-$(CONFIG_SND_BT87X) += snd-bt87x.o
+obj-$(CONFIG_SND_CMIPCI) += snd-cmipci.o
+obj-$(CONFIG_SND_CS4281) += snd-cs4281.o
+obj-$(CONFIG_SND_CS5530) += snd-cs5530.o
+obj-$(CONFIG_SND_ENS1370) += snd-ens1370.o
+obj-$(CONFIG_SND_ENS1371) += snd-ens1371.o
+obj-$(CONFIG_SND_ES1938) += snd-es1938.o
+obj-$(CONFIG_SND_ES1968) += snd-es1968.o
+obj-$(CONFIG_SND_FM801) += snd-fm801.o
+obj-$(CONFIG_SND_INTEL8X0) += snd-intel8x0.o
+obj-$(CONFIG_SND_INTEL8X0M) += snd-intel8x0m.o
+obj-$(CONFIG_SND_MAESTRO3) += snd-maestro3.o
+obj-$(CONFIG_SND_RME32) += snd-rme32.o
+obj-$(CONFIG_SND_RME96) += snd-rme96.o
+obj-$(CONFIG_SND_SIS7019) += snd-sis7019.o
+obj-$(CONFIG_SND_SONICVIBES) += snd-sonicvibes.o
+obj-$(CONFIG_SND_VIA82XX) += snd-via82xx.o
+obj-$(CONFIG_SND_VIA82XX_MODEM) += snd-via82xx-modem.o
+
+obj-$(CONFIG_SND) += \
+	ac97/ \
+	ali5451/ \
+	asihpi/ \
+	au88x0/ \
+	aw2/ \
+	ctxfi/ \
+	ca0106/ \
+	cs46xx/ \
+	cs5535audio/ \
+	lola/ \
+	lx6464es/ \
+	echoaudio/ \
+	emu10k1/ \
+	ice1712/ \
+	korg1212/ \
+	mixart/ \
+	nm256/ \
+	oxygen/ \
+	pcxhr/ \
+	riptide/ \
+	rme9652/ \
+	trident/ \
+	ymfpci/ \
+	vx222/