Bug 98151
| Summary: | snd_hda_codec_ca0132 module: unable to handle kernel NULL pointer dereference | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Andreas Reis (andreas.reis) |
| Component: | Sound(ALSA) | Assignee: | Jaroslav Kysela (perex) |
| Status: | RESOLVED CODE_FIX | ||
| Severity: | normal | CC: | tiwai |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | Iwai for-next | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
Excerpts from dmesg, kernel config, and modinfo
snd_pcm_avail_delay() returned strange values Fix NULL dereference in hdac DSP handling |
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Created attachment 176561 [details]
snd_pcm_avail_delay() returned strange values
There's also this attached warning listed for each booth in boths' journals. IIRC it's been there for a long time already with no noticeable effect. The "returned value" varies for (almost) each boot.
Could you try the patch below? The PA warnings might be rather an issue of alsa-lib plugin. Does this happen even if you don't use dsnoop? Created attachment 177331 [details]
Fix NULL dereference in hdac DSP handling
Works. I'll check dsnoop later today. OK, I'm going to queue the fix patch. Thanks for a quick test. The NULL-dereference fix was merged to upstream. The rest, PA's messages, is about alsa-lib issue, and I'll fix in alsa-lib git tree. |
Created attachment 176541 [details] Excerpts from dmesg, kernel config, and modinfo On drm-intel-nightly (drm/i915: Make the sprite formats const), which is at "hda/realtek - Support headset mode for ALC298". No sound from my CA0132 that's on my Haswell mainboard, instead I get said bug. You can view the relevant excerpts from dmesg and the kernel config, plus a modinfo snd-hda-codec-ca0132, in the attached file. However, sound almost works properly if I compile the chosen drivers into the kernel (I just switched everything I had picked for alsa, that is). "Almost" since the Master mixer setting is ignored entirely. The PCM setting still works, though. None of these problems affect my laptop (Haswell + ALC282), whose current kernel was compiled from the same sources.