Re: arca-22

Andrea Arcangeli (andrea@e-mind.com)
Tue, 17 Nov 1998 20:34:42 +0100 (CET)


On Tue, 17 Nov 1998, Andrea Arcangeli wrote:

>I have not fixed the fork/wait4/exec hanging bug yet. Tomorrow I' ll hope
>to have the time to arm the patch-ikd against it ;-). (I' ll have to hack

I run the fork-test on 2.1.127 + patch IKD. It never hanged in two hours
(under any kind of load). It was used to hang in arca-22 after some
minutes. So the bug is hided very well by the IKD tracing slowdown :-(.
No progress except that commenting out reschedule_idle() in
wake_up_process() seems to fix the bug too. If somebody would confirm this
it would be nice. It seems that the kernel loops in schedule() in entry.S
because need_resched is set. I could be wrong here though because I don' t
have a good kernel trace yet...

Andrea Arcangeli

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