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, 43 insertions, 0 deletions

diff --git a/drivers/input/joystick/Makefile b/drivers/input/joystick/Makefile
new file mode 100644
index 000000000..9976f596a
--- /dev/null
+++ b/drivers/input/joystick/Makefile
@@ -0,0 +1,43 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the input core drivers.
+#
+
+# Each configuration option enables a list of files.
+
+obj-$(CONFIG_JOYSTICK_A3D)		+= a3d.o
+obj-$(CONFIG_JOYSTICK_ADC)		+= adc-joystick.o
+obj-$(CONFIG_JOYSTICK_ADI)		+= adi.o
+obj-$(CONFIG_JOYSTICK_AMIGA)		+= amijoy.o
+obj-$(CONFIG_JOYSTICK_AS5011)		+= as5011.o
+obj-$(CONFIG_JOYSTICK_ANALOG)		+= analog.o
+obj-$(CONFIG_JOYSTICK_COBRA)		+= cobra.o
+obj-$(CONFIG_JOYSTICK_DB9)		+= db9.o
+obj-$(CONFIG_JOYSTICK_FSIA6B)		+= fsia6b.o
+obj-$(CONFIG_JOYSTICK_GAMECON)		+= gamecon.o
+obj-$(CONFIG_JOYSTICK_GF2K)		+= gf2k.o
+obj-$(CONFIG_JOYSTICK_GRIP)		+= grip.o
+obj-$(CONFIG_JOYSTICK_GRIP_MP)		+= grip_mp.o
+obj-$(CONFIG_JOYSTICK_GUILLEMOT)	+= guillemot.o
+obj-$(CONFIG_JOYSTICK_IFORCE)		+= iforce/
+obj-$(CONFIG_JOYSTICK_INTERACT)		+= interact.o
+obj-$(CONFIG_JOYSTICK_JOYDUMP)		+= joydump.o
+obj-$(CONFIG_JOYSTICK_MAGELLAN)		+= magellan.o
+obj-$(CONFIG_JOYSTICK_MAPLE)		+= maplecontrol.o
+obj-$(CONFIG_JOYSTICK_N64)		+= n64joy.o
+obj-$(CONFIG_JOYSTICK_PSXPAD_SPI)	+= psxpad-spi.o
+obj-$(CONFIG_JOYSTICK_PXRC)		+= pxrc.o
+obj-$(CONFIG_JOYSTICK_QWIIC)		+= qwiic-joystick.o
+obj-$(CONFIG_JOYSTICK_SEESAW)		+= adafruit-seesaw.o
+obj-$(CONFIG_JOYSTICK_SENSEHAT)	+= sensehat-joystick.o
+obj-$(CONFIG_JOYSTICK_SIDEWINDER)	+= sidewinder.o
+obj-$(CONFIG_JOYSTICK_SPACEBALL)	+= spaceball.o
+obj-$(CONFIG_JOYSTICK_SPACEORB)		+= spaceorb.o
+obj-$(CONFIG_JOYSTICK_STINGER)		+= stinger.o
+obj-$(CONFIG_JOYSTICK_TMDC)		+= tmdc.o
+obj-$(CONFIG_JOYSTICK_TURBOGRAFX)	+= turbografx.o
+obj-$(CONFIG_JOYSTICK_TWIDJOY)		+= twidjoy.o
+obj-$(CONFIG_JOYSTICK_WARRIOR)		+= warrior.o
+obj-$(CONFIG_JOYSTICK_WALKERA0701)	+= walkera0701.o
+obj-$(CONFIG_JOYSTICK_XPAD)		+= xpad.o
+obj-$(CONFIG_JOYSTICK_ZHENHUA)		+= zhenhua.o