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Krzysztof Kozlowski 9c534dbfd1 ASoC: qcom: q6apm-lpass-dais: Fix NULL pointer dereference if source graph failed 
commit 68f27f7c7708183e7873c585ded2f1b057ac5b97 upstream.

If earlier opening of source graph fails (e.g. ADSP rejects due to
incorrect audioreach topology), the graph is closed and
"dai_data->graph[dai->id]" is assigned NULL.  Preparing the DAI for sink
graph continues though and next call to q6apm_lpass_dai_prepare()
receives dai_data->graph[dai->id]=NULL leading to NULL pointer
exception:

  qcom-apm gprsvc:service:2:1: Error (1) Processing 0x01001002 cmd
  qcom-apm gprsvc:service:2:1: DSP returned error[1001002] 1
  q6apm-lpass-dais 30000000.remoteproc:glink-edge:gpr:service@1:bedais: fail to start APM port 78
  q6apm-lpass-dais 30000000.remoteproc:glink-edge:gpr:service@1:bedais: ASoC: error at snd_soc_pcm_dai_prepare on TX_CODEC_DMA_TX_3: -22
  Unable to handle kernel NULL pointer dereference at virtual address 00000000000000a8
  ...
  Call trace:
   q6apm_graph_media_format_pcm+0x48/0x120 (P)
   q6apm_lpass_dai_prepare+0x110/0x1b4
   snd_soc_pcm_dai_prepare+0x74/0x108
   __soc_pcm_prepare+0x44/0x160
   dpcm_be_dai_prepare+0x124/0x1c0

Fixes: 30ad723b93 ("ASoC: qdsp6: audioreach: add q6apm lpass dai support")
Cc: stable@vger.kernel.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>
Message-ID: <20250904101849.121503-2-krzysztof.kozlowski@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-09-25 11:13:46 +02:00
arch LoongArch: Check the return value when creating kobj 2025-09-25 11:13:46 +02:00
block block: add a queue_limits_commit_update_frozen helper 2025-09-09 18:58:24 +02:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg 2025-09-25 11:13:45 +02:00
Documentation docs: networking: can: change bcm_msg_head frames member to support flexible array 2025-09-19 16:35:49 +02:00
drivers iommu/amd/pgtbl: Fix possible race while increase page table level 2025-09-25 11:13:46 +02:00
fs btrfs: tree-checker: fix the incorrect inode ref size check 2025-09-25 11:13:46 +02:00
include crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg 2025-09-25 11:13:45 +02:00
init io_uring: fix breakage in EXPERT menu 2025-08-15 12:13:32 +02:00
io_uring io_uring/msg_ring: ensure io_kiocb freeing is deferred for RCU 2025-09-09 18:58:15 +02:00
ipc ipc: fix to protect IPCS lookups using RCU 2025-06-27 11:11:22 +01:00
kernel cgroup: split cgroup_destroy_wq into 3 workqueues 2025-09-25 11:13:42 +02:00
lib lib/sbitmap: convert shallow_depth from one word to the whole sbitmap 2025-08-20 18:30:49 +02:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm mm: revert "mm: vmscan.c: fix OOM on swap stress test" 2025-09-25 11:13:45 +02:00
net tls: make sure to abort the stream if headers are bogus 2025-09-25 11:13:44 +02:00
rust rust: alloc: fix rusttest by providing Cmalloc::aligned_layout too 2025-08-28 16:31:13 +02:00
samples ftrace/samples: Fix function size computation 2025-09-19 16:35:44 +02:00
scripts rust: support Rust >= 1.91.0 target spec 2025-09-09 18:58:22 +02:00
security apparmor: Fix 8-byte alignment for initial dfa blob streams 2025-08-28 16:30:56 +02:00
sound ASoC: qcom: q6apm-lpass-dais: Fix NULL pointer dereference if source graph failed 2025-09-25 11:13:46 +02:00
tools objtool/LoongArch: Mark special atomic instruction as INSN_BUG type 2025-09-25 11:13:45 +02:00
usr kbuild: hdrcheck: fix cross build with clang 2025-03-13 13:02:18 +01:00
virt KVM: Allow CPU to reschedule while setting per-page memory attributes 2025-07-17 18:37:08 +02:00
.clang-format clang-format: Update with v6.11-rc1's for_each macro list 2024-08-02 13:20:31 +02:00
.clippy.toml rust: give Clippy the minimum supported Rust version 2025-08-01 09:48:44 +01:00
.cocciconfig
.editorconfig
.get_maintainer.ignore
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.gitignore rust: introduce .clippy.toml 2025-03-13 13:01:42 +01:00
.mailmap mailmap: add entry for Thorsten Blum 2024-11-07 14:14:59 -08:00
.rustfmt.toml
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CREDITS MAINTAINERS: Remove self from DSA entry 2024-11-03 12:52:38 -08:00
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MAINTAINERS MAINTAINERS: Update Alexey Makhalov's email address 2025-05-22 14:29:46 +02:00
Makefile Linux 6.12.48 2025-09-19 16:35:52 +02:00
README

README

Linux kernel

There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first.

In order to build the documentation, use make htmldocs or make pdfdocs. The formatted documentation can also be read online at:

https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory, several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.