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/soc/codecs/wm8580.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 sound/soc/codecs/wm8580.h (limited to 'sound/soc/codecs/wm8580.h') diff --git a/sound/soc/codecs/wm8580.h b/sound/soc/codecs/wm8580.h new file mode 100644 index 000000000..34f7fee6b --- /dev/null +++ b/sound/soc/codecs/wm8580.h @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * wm8580.h -- audio driver for WM8580 + * + * Copyright 2008 Samsung Electronics. + * Author: Ryu Euiyoul + * ryu.real@gmail.com + */ + +#ifndef _WM8580_H +#define _WM8580_H + +#define WM8580_PLLA 1 +#define WM8580_PLLB 2 + +#define WM8580_MCLK 1 +#define WM8580_CLKOUTSRC 2 + +#define WM8580_CLKSRC_MCLK 1 +#define WM8580_CLKSRC_PLLA 2 +#define WM8580_CLKSRC_PLLB 3 +#define WM8580_CLKSRC_OSC 4 +#define WM8580_CLKSRC_NONE 5 +#define WM8580_CLKSRC_ADCMCLK 6 + +#define WM8580_DAI_PAIFRX 0 +#define WM8580_DAI_PAIFTX 1 + +#endif + -- cgit v1.3.1