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/max98363.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 sound/soc/codecs/max98363.h (limited to 'sound/soc/codecs/max98363.h') diff --git a/sound/soc/codecs/max98363.h b/sound/soc/codecs/max98363.h new file mode 100644 index 000000000..2b6743d3a --- /dev/null +++ b/sound/soc/codecs/max98363.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* Copyright (c) 2022 Analog Devices Inc. */ + +#ifndef _MAX98363_H +#define _MAX98363_H + +#define MAX98363_R2000_SW_RESET 0x2000 +#define MAX98363_R2001_INTR_RAW 0x2001 +#define MAX98363_R2003_INTR_STATE 0x2003 +#define MAX98363_R2005_INTR_FALG 0x2005 +#define MAX98363_R2007_INTR_EN 0x2007 +#define MAX98363_R2009_INTR_CLR 0x2009 +#define MAX98363_R2021_ERR_MON_CTRL 0x2021 +#define MAX98363_R2022_SPK_MON_THRESH 0x2022 +#define MAX98363_R2023_SPK_MON_DURATION 0x2023 +#define MAX98363_R2030_TONE_GEN_CFG 0x2030 +#define MAX98363_R203F_TONE_GEN_EN 0x203F +#define MAX98363_R2040_AMP_VOL 0x2040 +#define MAX98363_R2041_AMP_GAIN 0x2041 +#define MAX98363_R2042_DSP_CFG 0x2042 +#define MAX98363_R21FF_REV_ID 0x21FF + +/* MAX98363_R2021_ERR_MON_CTRL */ +#define MAX98363_SPKMON_SHIFT (3) +#define MAX98363_CLOCK_MON_SHIFT (0) + +/* MAX98363_R2042_DSP_CFG */ +#define MAX98363_AMP_DSP_CFG_RMP_SHIFT (3) + +struct max98363_priv { + struct regmap *regmap; + struct sdw_slave *slave; + bool hw_init; + bool first_hw_init; +}; +#endif -- cgit v1.3.1