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 --- include/sound/rt5660.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 include/sound/rt5660.h (limited to 'include/sound/rt5660.h') diff --git a/include/sound/rt5660.h b/include/sound/rt5660.h new file mode 100644 index 000000000..7e8656cec --- /dev/null +++ b/include/sound/rt5660.h @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * linux/sound/rt5660.h -- Platform data for RT5660 + * + * Copyright 2016 Realtek Semiconductor Corp. + * Author: Oder Chiou + */ + +#ifndef __LINUX_SND_RT5660_H +#define __LINUX_SND_RT5660_H + +enum rt5660_dmic1_data_pin { + RT5660_DMIC1_NULL, + RT5660_DMIC1_DATA_GPIO2, + RT5660_DMIC1_DATA_IN1P, +}; + +struct rt5660_platform_data { + /* IN1 & IN3 can optionally be differential */ + bool in1_diff; + bool in3_diff; + bool use_ldo2; + bool poweroff_codec_in_suspend; + + enum rt5660_dmic1_data_pin dmic1_data_pin; +}; + +#endif -- cgit v1.3.1