diff options
| 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 /sound/soc/qcom/common.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 'sound/soc/qcom/common.h')
| -rw-r--r-- | sound/soc/qcom/common.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/sound/soc/qcom/common.h b/sound/soc/qcom/common.h new file mode 100644 index 000000000..c1deac109 --- /dev/null +++ b/sound/soc/qcom/common.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +// Copyright (c) 2018, The Linux Foundation. All rights reserved. + +#ifndef __QCOM_SND_COMMON_H__ +#define __QCOM_SND_COMMON_H__ + +#include <dt-bindings/sound/qcom,q6afe.h> +#include <sound/soc.h> + +#define LPASS_MAX_PORT (LPI_MI2S_TX_6 + 1) + +struct qcom_snd_tdm_slot_cfg { + unsigned int tx_mask; + unsigned int rx_mask; + unsigned int slots; + unsigned int slot_width; +}; + +int qcom_snd_parse_of(struct snd_soc_card *card); +int qcom_snd_get_dai_tdm_slots(struct snd_soc_pcm_runtime *rtd, + struct qcom_snd_tdm_slot_cfg *cpu_cfg, + struct qcom_snd_tdm_slot_cfg *codec_cfg); +int qcom_snd_apply_dai_tdm_slots_cfg(struct snd_soc_pcm_runtime *rtd, + const struct qcom_snd_tdm_slot_cfg *cpu_cfg, + const struct qcom_snd_tdm_slot_cfg *codec_cfg); +int qcom_snd_apply_dai_tdm_slots(struct snd_soc_pcm_runtime *rtd); +int qcom_snd_wcd_jack_setup(struct snd_soc_pcm_runtime *rtd, + struct snd_soc_jack *jack, bool *jack_setup); +int qcom_snd_dp_jack_setup(struct snd_soc_pcm_runtime *rtd, + struct snd_soc_jack *dp_jack, int id); + + +#endif |