Messages in this thread | | | Subject | Re: Deadlock on kernels > 2.4.13-pre6 | Date | Mon, 3 Dec 2001 02:52:34 -0500 | From | Chris Siebenmann <> |
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| I've recently compiled and tested each kernel since 2.4.13-pre6[0], | and I've noticed a recurrent (and reproducible[1]) deadlock on my | system when I try to play an mp3[2].
I have now seen two lockups under 2.4.16 that may be the same problem. Points of similarity: - playing mp3s (both times have been streaming mp3 audio over my PPP link) - Creative Soundblaster AWE (AWE32 for me, though); mine is configured entirely through the kernel's PnP mechanisms.
I believe my lockups are irregular and infrequent, but it may just feel that way to me because I haven't listened to mp3's on this machine very much.
When the hang happens, the first symptom is that my mouse cursor in X locks and stops tracking; music continues playing for a bit longer before stopping. As far as I can tell nothing really happens after that point; if I forcefully disconnect the PPP link it does not redial, for example. SysRq-B will reboot the machine but SysRq-S to sync it will produce no audible results, and SysRq-U doesn't seem to have any effect. (This is an isolated home machine, which makes more precise diagnostics hard to get when it hangs in X.)
2.4.13-ac5 is, as far as I can tell, completely stable. I don't have experience with intermediate kernel versions; I jumped straight from 2.4.13-ac5 to 2.4.16.
My environment is UP Pentium II, ext2, aic7880 SCSI with a single disk, Matrox G400 AGP graphics, XFree86 4.1.0 (using the fully free drivers). Both lockups have happened while X was running.
I will see if I can reproduce a lockup in the console and capture SysRq output that's got some useful information.
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