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/rt715-sdca.h | 132 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 132 insertions(+) create mode 100644 sound/soc/codecs/rt715-sdca.h (limited to 'sound/soc/codecs/rt715-sdca.h') diff --git a/sound/soc/codecs/rt715-sdca.h b/sound/soc/codecs/rt715-sdca.h new file mode 100644 index 000000000..e5d6928ec --- /dev/null +++ b/sound/soc/codecs/rt715-sdca.h @@ -0,0 +1,132 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * rt715-sdca.h -- RT715 ALSA SoC audio driver header + * + * Copyright(c) 2020 Realtek Semiconductor Corp. + */ + +#ifndef __RT715_SDCA_H__ +#define __RT715_SDCA_H__ + +#include +#include +#include +#include +#include +#include + +struct rt715_sdca_priv { + struct regmap *regmap; + struct regmap *mbq_regmap; + struct snd_soc_codec *codec; + struct sdw_slave *slave; + struct delayed_work adc_mute_work; + int dbg_nid; + int dbg_vid; + int dbg_payload; + struct sdw_bus_params params; + bool hw_init; + bool first_hw_init; + int l_is_unmute; + int r_is_unmute; + int hw_sdw_ver; + int kctl_switch_orig[4]; + int kctl_2ch_orig[2]; + int kctl_4ch_orig[4]; + int kctl_8ch_orig[8]; +}; + +struct rt715_sdca_kcontrol_private { + unsigned int reg_base; + unsigned int count; + unsigned int max; + unsigned int shift; + unsigned int invert; +}; + +/* MIPI Register */ +#define RT715_INT_CTRL 0x005a +#define RT715_INT_MASK 0x005e + +/* NID */ +#define RT715_AUDIO_FUNCTION_GROUP 0x01 +#define RT715_MIC_ADC 0x07 +#define RT715_LINE_ADC 0x08 +#define RT715_MIX_ADC 0x09 +#define RT715_DMIC1 0x12 +#define RT715_DMIC2 0x13 +#define RT715_MIC1 0x18 +#define RT715_MIC2 0x19 +#define RT715_LINE1 0x1a +#define RT715_LINE2 0x1b +#define RT715_DMIC3 0x1d +#define RT715_DMIC4 0x29 +#define RT715_VENDOR_REG 0x20 +#define RT715_MUX_IN1 0x22 +#define RT715_MUX_IN2 0x23 +#define RT715_MUX_IN3 0x24 +#define RT715_MUX_IN4 0x25 +#define RT715_MIX_ADC2 0x27 +#define RT715_INLINE_CMD 0x55 +#define RT715_VENDOR_HDA_CTL 0x61 + +/* Index (NID:20h) */ +#define RT715_PRODUCT_NUM 0x0 +#define RT715_IRQ_CTRL 0x2b +#define RT715_AD_FUNC_EN 0x36 +#define RT715_REV_1 0x37 +#define RT715_SDW_INPUT_SEL 0x39 +#define RT715_DFLL_VAD 0x44 +#define RT715_EXT_DMIC_CLK_CTRL2 0x54 + +/* Index (NID:61h) */ +#define RT715_HDA_LEGACY_MUX_CTL1 0x00 + +/* SDCA (Function) */ +#define FUN_JACK_CODEC 0x01 +#define FUN_MIC_ARRAY 0x02 +#define FUN_HID 0x03 +/* SDCA (Entity) */ +#define RT715_SDCA_ST_EN 0x00 +#define RT715_SDCA_CS_FREQ_IND_EN 0x01 +#define RT715_SDCA_FU_ADC8_9_VOL 0x02 +#define RT715_SDCA_SMPU_TRIG_ST_EN 0x05 +#define RT715_SDCA_FU_ADC10_11_VOL 0x06 +#define RT715_SDCA_FU_ADC7_27_VOL 0x0a +#define RT715_SDCA_FU_AMIC_GAIN_EN 0x0c +#define RT715_SDCA_FU_DMIC_GAIN_EN 0x0e +#define RT715_SDCA_CX_CLK_SEL_EN 0x10 +#define RT715_SDCA_CREQ_POW_EN 0x18 +/* SDCA (Control) */ +#define RT715_SDCA_ST_CTRL 0x00 +#define RT715_SDCA_CX_CLK_SEL_CTRL 0x01 +#define RT715_SDCA_REQ_POW_CTRL 0x01 +#define RT715_SDCA_FU_MUTE_CTRL 0x01 +#define RT715_SDCA_FU_VOL_CTRL 0x02 +#define RT715_SDCA_FU_DMIC_GAIN_CTRL 0x0b +#define RT715_SDCA_FREQ_IND_CTRL 0x10 +#define RT715_SDCA_SMPU_TRIG_EN_CTRL 0x10 +#define RT715_SDCA_SMPU_TRIG_ST_CTRL 0x11 +/* SDCA (Channel) */ +#define CH_00 0x00 +#define CH_01 0x01 +#define CH_02 0x02 +#define CH_03 0x03 +#define CH_04 0x04 +#define CH_05 0x05 +#define CH_06 0x06 +#define CH_07 0x07 +#define CH_08 0x08 + +#define RT715_SDCA_DB_STEP 375 + +enum { + RT715_AIF1, + RT715_AIF2, +}; + +int rt715_sdca_io_init(struct device *dev, struct sdw_slave *slave); +int rt715_sdca_init(struct device *dev, struct regmap *mbq_regmap, + struct regmap *regmap, struct sdw_slave *slave); + +#endif /* __RT715_SDCA_H__ */ -- cgit v1.3.1