From 6668ed271eaefaa63e686bdfbedaeb7b8e492722 Mon Sep 17 00:00:00 2001 From: Kumar Kartikeya Dwivedi 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 Link: https://lore.kernel.org/r/20260904084325.52250-7-memxor@gmail.com Signed-off-by: Alexei Starovoitov --- sound/sparc/Kconfig | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 sound/sparc/Kconfig (limited to 'sound/sparc/Kconfig') diff --git a/sound/sparc/Kconfig b/sound/sparc/Kconfig new file mode 100644 index 000000000..59b9f16e8 --- /dev/null +++ b/sound/sparc/Kconfig @@ -0,0 +1,43 @@ +# SPDX-License-Identifier: GPL-2.0-only +# ALSA Sparc drivers + +menuconfig SND_SPARC + bool "Sparc sound devices" + depends on SPARC + default y + help + Support for sound devices specific to Sun SPARC architectures. + +if SND_SPARC + +config SND_SUN_AMD7930 + tristate "Sun AMD7930" + depends on SBUS + select SND_PCM + help + Say Y here to include support for AMD7930 sound device on Sun. + + To compile this driver as a module, choose M here: the module + will be called snd-sun-amd7930. + +config SND_SUN_CS4231 + tristate "Sun CS4231" + select SND_PCM + select SND_TIMER + help + Say Y here to include support for CS4231 sound device on Sun. + + To compile this driver as a module, choose M here: the module + will be called snd-sun-cs4231. + +config SND_SUN_DBRI + tristate "Sun DBRI" + depends on SBUS + select SND_PCM + help + Say Y here to include support for DBRI sound device on Sun. + + To compile this driver as a module, choose M here: the module + will be called snd-sun-dbri. + +endif # SND_SPARC -- cgit v1.3.1