selftests/bpf: Test packet range of pointers sharing an idgrafted

Add tests where two packet pointers share an id and tightening one
pointer's umax from its var_off would put it less than their constant
distance from the other's umax: with an index & 0x38 capped at 50, the
base pointer keeps umax 50, so the pointer 8 bytes further on must keep
umax 58, even though its known bits allow at most 56.

These refused a valid program or accepted an out-of-bounds access before
the fix:

- check the advanced copy, load through the base: valid, was refused;
- check the base, load the byte at base + 1 through a copy advanced by
  8: was accepted;
- check base + 4, load 4 bytes at base + 2 through base + 8: reads two
  bytes past the checked range, was accepted;
- the same as the second with data_meta pointers checked against data:
  was accepted.

These pass with and without the fix and cover nearby paths:

- subtract an unknown scalar from a checked pointer and load below it
  (the range is kept across a new id);
- reach a load through two paths whose checks cover 8 and 7 bytes after
  the loaded pointer; the second path must not be pruned by the first;
- spill a copy of a pointer, check the pointer, fill the copy and load
  one byte past the checked range: the load is refused, and the copy
  has the range of the check.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20261001145255.855630-2-alexei.starovoitov@gmail.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>

1 files changed, 105 insertions, 0 deletions

diff --git a/include/sound/da7218.h b/include/sound/da7218.h
new file mode 100644
index 000000000..9d0a82fbe
--- /dev/null
+++ b/include/sound/da7218.h
@@ -0,0 +1,105 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * da7218.h - DA7218 ASoC Codec Driver Platform Data
+ *
+ * Copyright (c) 2015 Dialog Semiconductor
+ *
+ * Author: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
+ */
+
+#ifndef _DA7218_PDATA_H
+#define _DA7218_PDATA_H
+
+/* Mic Bias */
+enum da7218_micbias_voltage {
+	DA7218_MICBIAS_1_2V = -1,
+	DA7218_MICBIAS_1_6V,
+	DA7218_MICBIAS_1_8V,
+	DA7218_MICBIAS_2_0V,
+	DA7218_MICBIAS_2_2V,
+	DA7218_MICBIAS_2_4V,
+	DA7218_MICBIAS_2_6V,
+	DA7218_MICBIAS_2_8V,
+	DA7218_MICBIAS_3_0V,
+};
+
+enum da7218_mic_amp_in_sel {
+	DA7218_MIC_AMP_IN_SEL_DIFF = 0,
+	DA7218_MIC_AMP_IN_SEL_SE_P,
+	DA7218_MIC_AMP_IN_SEL_SE_N,
+};
+
+/* DMIC */
+enum da7218_dmic_data_sel {
+	DA7218_DMIC_DATA_LRISE_RFALL = 0,
+	DA7218_DMIC_DATA_LFALL_RRISE,
+};
+
+enum da7218_dmic_samplephase {
+	DA7218_DMIC_SAMPLE_ON_CLKEDGE = 0,
+	DA7218_DMIC_SAMPLE_BETWEEN_CLKEDGE,
+};
+
+enum da7218_dmic_clk_rate {
+	DA7218_DMIC_CLK_3_0MHZ = 0,
+	DA7218_DMIC_CLK_1_5MHZ,
+};
+
+/* Headphone Detect */
+enum da7218_hpldet_jack_rate {
+	DA7218_HPLDET_JACK_RATE_5US = 0,
+	DA7218_HPLDET_JACK_RATE_10US,
+	DA7218_HPLDET_JACK_RATE_20US,
+	DA7218_HPLDET_JACK_RATE_40US,
+	DA7218_HPLDET_JACK_RATE_80US,
+	DA7218_HPLDET_JACK_RATE_160US,
+	DA7218_HPLDET_JACK_RATE_320US,
+	DA7218_HPLDET_JACK_RATE_640US,
+};
+
+enum da7218_hpldet_jack_debounce {
+	DA7218_HPLDET_JACK_DEBOUNCE_OFF = 0,
+	DA7218_HPLDET_JACK_DEBOUNCE_2,
+	DA7218_HPLDET_JACK_DEBOUNCE_3,
+	DA7218_HPLDET_JACK_DEBOUNCE_4,
+};
+
+enum da7218_hpldet_jack_thr {
+	DA7218_HPLDET_JACK_THR_84PCT = 0,
+	DA7218_HPLDET_JACK_THR_88PCT,
+	DA7218_HPLDET_JACK_THR_92PCT,
+	DA7218_HPLDET_JACK_THR_96PCT,
+};
+
+struct da7218_hpldet_pdata {
+	enum da7218_hpldet_jack_rate jack_rate;
+	enum da7218_hpldet_jack_debounce jack_debounce;
+	enum da7218_hpldet_jack_thr jack_thr;
+	bool comp_inv;
+	bool hyst;
+	bool discharge;
+};
+
+struct da7218_pdata {
+	/* Mic */
+	enum da7218_micbias_voltage micbias1_lvl;
+	enum da7218_micbias_voltage micbias2_lvl;
+	enum da7218_mic_amp_in_sel mic1_amp_in_sel;
+	enum da7218_mic_amp_in_sel mic2_amp_in_sel;
+
+	/* DMIC */
+	enum da7218_dmic_data_sel dmic1_data_sel;
+	enum da7218_dmic_data_sel dmic2_data_sel;
+	enum da7218_dmic_samplephase dmic1_samplephase;
+	enum da7218_dmic_samplephase dmic2_samplephase;
+	enum da7218_dmic_clk_rate dmic1_clk_rate;
+	enum da7218_dmic_clk_rate dmic2_clk_rate;
+
+	/* HP Diff Supply - DA7217 only */
+	bool hp_diff_single_supply;
+
+	/* HP Detect - DA7218 only */
+	struct da7218_hpldet_pdata *hpldet_pdata;
+};
+
+#endif /* _DA7218_PDATA_H */