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/wm8770.h | 48 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 sound/soc/codecs/wm8770.h (limited to 'sound/soc/codecs/wm8770.h') diff --git a/sound/soc/codecs/wm8770.h b/sound/soc/codecs/wm8770.h new file mode 100644 index 000000000..e0a3f5a14 --- /dev/null +++ b/sound/soc/codecs/wm8770.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * wm8770.h -- WM8770 ASoC driver + * + * Copyright 2010 Wolfson Microelectronics plc + * + * Author: Dimitris Papastamos + */ + +#ifndef _WM8770_H +#define _WM8770_H + +/* Registers */ +#define WM8770_VOUT1LVOL 0 +#define WM8770_VOUT1RVOL 0x1 +#define WM8770_VOUT2LVOL 0x2 +#define WM8770_VOUT2RVOL 0x3 +#define WM8770_VOUT3LVOL 0x4 +#define WM8770_VOUT3RVOL 0x5 +#define WM8770_VOUT4LVOL 0x6 +#define WM8770_VOUT4RVOL 0x7 +#define WM8770_MSALGVOL 0x8 +#define WM8770_DAC1LVOL 0x9 +#define WM8770_DAC1RVOL 0xa +#define WM8770_DAC2LVOL 0xb +#define WM8770_DAC2RVOL 0xc +#define WM8770_DAC3LVOL 0xd +#define WM8770_DAC3RVOL 0xe +#define WM8770_DAC4LVOL 0xf +#define WM8770_DAC4RVOL 0x10 +#define WM8770_MSDIGVOL 0x11 +#define WM8770_DACPHASE 0x12 +#define WM8770_DACCTRL1 0x13 +#define WM8770_DACMUTE 0x14 +#define WM8770_DACCTRL2 0x15 +#define WM8770_IFACECTRL 0x16 +#define WM8770_MSTRCTRL 0x17 +#define WM8770_PWDNCTRL 0x18 +#define WM8770_ADCLCTRL 0x19 +#define WM8770_ADCRCTRL 0x1a +#define WM8770_ADCMUX 0x1b +#define WM8770_OUTMUX1 0x1c +#define WM8770_OUTMUX2 0x1d +#define WM8770_RESET 0x31 + +#define WM8770_CACHEREGNUM 0x20 + +#endif -- cgit v1.3.1