Messages in this thread | | | Date | Fri, 13 Feb 2004 09:58:19 +1100 | From | Nick Piggin <> | Subject | Re: bug, or is it? - SCHED_RR and FPU related |
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Rudo Thomas wrote:
>Hello. > >I have stumbled upon a grave bug, I think. I can reproduce a hard lock-up using >xmms and a buggy plugin - only SysRq-B helps. I managed to narrow it down to >"0.5/NAN"-like operation. It only causes a complete hang when xmms is run with >SCHED_RR priority. Otherwise, only xmms hangs. Unfortunately, I was not able to >create a working proof-of-concept program. > >The question is - is this a kernel bug, OR something that cannot be prevented >from happening when using SCHED_RR policy? > >Tried with 2.6.3-rc[12] and glibc-2.3.2 (-r9 gentoo) with nptl support (if that >matters). > >Have a nice day. > >
Hi Rudo, xmms probably goes into an infinite loop, preventing anything else from being scheduled, right? If that's the case then this is correct behaviour.
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