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| author | Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2026-09-04 10:43:19 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-04 07:58:36 -0700 |
| commit | 6668ed271eaefaa63e686bdfbedaeb7b8e492722 (patch) | |
| tree | 58e8288fead484f6755ad0815fc74c3742663761 /include/sound/sof/dai-imx.h | |
| download | linux-stable-6668ed271eaefaa63e686bdfbedaeb7b8e492722.tar.gz linux-stable-6668ed271eaefaa63e686bdfbedaeb7b8e492722.zip | |
selftests/bpf: Reject graph kptr use after RCU unlockgrafted
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 <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904084325.52250-7-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/sound/sof/dai-imx.h')
| -rw-r--r-- | include/sound/sof/dai-imx.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/include/sound/sof/dai-imx.h b/include/sound/sof/dai-imx.h new file mode 100644 index 000000000..6bc987bd4 --- /dev/null +++ b/include/sound/sof/dai-imx.h @@ -0,0 +1,61 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */ +/* + * Copyright 2019 NXP + * + * Author: Daniel Baluta <daniel.baluta@nxp.com> + */ + +#ifndef __INCLUDE_SOUND_SOF_DAI_IMX_H__ +#define __INCLUDE_SOUND_SOF_DAI_IMX_H__ + +#include <sound/sof/header.h> + +/* ESAI Configuration Request - SOF_IPC_DAI_ESAI_CONFIG */ +struct sof_ipc_dai_esai_params { + struct sof_ipc_hdr hdr; + + /* MCLK */ + uint16_t reserved1; + uint16_t mclk_id; + uint32_t mclk_direction; + + uint32_t mclk_rate; /* MCLK frequency in Hz */ + uint32_t fsync_rate; /* FSYNC frequency in Hz */ + uint32_t bclk_rate; /* BCLK frequency in Hz */ + + /* TDM */ + uint32_t tdm_slots; + uint32_t rx_slots; + uint32_t tx_slots; + uint16_t tdm_slot_width; + uint16_t reserved2; /* alignment */ +} __packed; + +/* SAI Configuration Request - SOF_IPC_DAI_SAI_CONFIG */ +struct sof_ipc_dai_sai_params { + struct sof_ipc_hdr hdr; + + /* MCLK */ + uint16_t reserved1; + uint16_t mclk_id; + uint32_t mclk_direction; + + uint32_t mclk_rate; /* MCLK frequency in Hz */ + uint32_t fsync_rate; /* FSYNC frequency in Hz */ + uint32_t bclk_rate; /* BCLK frequency in Hz */ + + /* TDM */ + uint32_t tdm_slots; + uint32_t rx_slots; + uint32_t tx_slots; + uint16_t tdm_slot_width; + uint16_t reserved2; /* alignment */ +} __packed; + +/* MICFIL Configuration Request - SOF_IPC_DAI_MICFIL_CONFIG */ +struct sof_ipc_dai_micfil_params { + uint32_t pdm_rate; + uint32_t pdm_ch; +} __packed; + +#endif |