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/wm8988.h | 53 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 sound/soc/codecs/wm8988.h (limited to 'sound/soc/codecs/wm8988.h') diff --git a/sound/soc/codecs/wm8988.h b/sound/soc/codecs/wm8988.h new file mode 100644 index 000000000..bd8a30c13 --- /dev/null +++ b/sound/soc/codecs/wm8988.h @@ -0,0 +1,53 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright 2005 Openedhand Ltd. + * + * Author: Richard Purdie + * + * Based on WM8753.h + */ + +#ifndef _WM8988_H +#define _WM8988_H + +/* WM8988 register space */ + +#define WM8988_LINVOL 0x00 +#define WM8988_RINVOL 0x01 +#define WM8988_LOUT1V 0x02 +#define WM8988_ROUT1V 0x03 +#define WM8988_ADCDAC 0x05 +#define WM8988_IFACE 0x07 +#define WM8988_SRATE 0x08 +#define WM8988_LDAC 0x0a +#define WM8988_RDAC 0x0b +#define WM8988_BASS 0x0c +#define WM8988_TREBLE 0x0d +#define WM8988_RESET 0x0f +#define WM8988_3D 0x10 +#define WM8988_ALC1 0x11 +#define WM8988_ALC2 0x12 +#define WM8988_ALC3 0x13 +#define WM8988_NGATE 0x14 +#define WM8988_LADC 0x15 +#define WM8988_RADC 0x16 +#define WM8988_ADCTL1 0x17 +#define WM8988_ADCTL2 0x18 +#define WM8988_PWR1 0x19 +#define WM8988_PWR2 0x1a +#define WM8988_ADCTL3 0x1b +#define WM8988_ADCIN 0x1f +#define WM8988_LADCIN 0x20 +#define WM8988_RADCIN 0x21 +#define WM8988_LOUTM1 0x22 +#define WM8988_LOUTM2 0x23 +#define WM8988_ROUTM1 0x24 +#define WM8988_ROUTM2 0x25 +#define WM8988_LOUT2V 0x28 +#define WM8988_ROUT2V 0x29 +#define WM8988_LPPB 0x43 +#define WM8988_NUM_REG 0x44 + +#define WM8988_SYSCLK 0 + +#endif -- cgit v1.3.1