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Re: Early panic in msleep();
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Re: Early panic in msleep();


  • Subject: Re: Early panic in msleep();
  • From: Jorgen Lundman <email@hidden>
  • Date: Fri, 27 Jul 2018 09:32:57 +0900
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> But it isn't clear to me why it would die in OSIncrementAtomicLong().
> 'current_proc()' will never return NULL, and we pass the test of p->p_stats.

I stand corrected, current_proc() can indeed return NULL, so no wonder
calling msleep() at such a time would result in fireworks.

Is there is a known "event" to wait for when we are allowed to call
msleep()?, or should I just delay until current_proc() != NULL?


        struct fake_proc {
                void *padding[0xf0 / 8];
                void *p_stats;
        };
        struct fake_proc *p = (struct fake_proc *)current_proc();

        printf("SPL DEBUG: p is %d p->p_stats %d \n",
                p != NULL,
                p && p->p_stats);

        delay(hz<<2);
        printf("continuing...\n");


(spl-taskq.c:1586)> kernel: (spl) SPL DEBUG: p is 0 p->p_stats 0
(spl-taskq.c:2126)> kernel: (spl) continuing...
(spl-taskq.c:1586)> kernel: (spl) SPL DEBUG: p is 1 p->p_stats 1




--
Jorgen Lundman       | <email@hidden>
Unix Administrator   | +81 (0)90-5578-8500
Shibuya-ku, Tokyo    | Japan

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 >Early panic in msleep(); (From: Jorgen Lundman <email@hidden>)

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