Messages in this thread |  | | | Date | Thu, 21 Oct 2010 17:29:34 -0400 | | From | Ted Ts'o <> | | Subject | Re: What am I doing wrong? submit_bio() suddenly stops working... |
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On Thu, Oct 21, 2010 at 07:46:15PM +0200, Jens Axboe wrote: > By the sound of things, if I were you I'd turn on the mem and slab > debugging to catch use-before-init and use-after-free. Mysterious hangs > in the IO sub system are usually caused by such bugs. And the regular > debugging aids, just to see if that produces anything of interest.
I've tried turning on slub_debug=FZP, and that didn't turn up anything.
Looking at the traces, it looks like the queue gets plugged near the end, but then I don't see an unplug timer event. I'm not sure what could cuase that, though...
- Ted
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