Bug #624

hang during boot

Added by swildner almost 7 years ago. Updated almost 7 years ago.

Status:ClosedStart date:
Priority:NormalDue date:
Assignee:-% Done:

0%

Category:-
Target version:-

Description

Hi,

after the changes to the CPU interrupt enablement (April 30), my laptop
hangs during boot. Last words with ACPI:

http://87.78.98.243/tmp/LPIC0026.JPG

And without ACPI:

http://87.78.98.243/tmp/LPIC0027.JPG

It doesn't seem to be completely frozen, though, since I still get ACPI
messages (such as when pressing the power button ("acpi_button0: power
button pressed")).

Sascha

History

#1 Updated by qhwt+dfly almost 7 years ago

Same here. I tried replacing DRIVERSLEEP's with DELAY's in ata-all.c
and it made it into single-user mode, so there may be some edge cases
where DRIVERSLEEP is not usable in early boot stage.

Cheers.

#2 Updated by dillon almost 7 years ago

:Same here. I tried replacing DRIVERSLEEP's with DELAY's in ata-all.c
:and it made it into single-user mode, so there may be some edge cases
:where DRIVERSLEEP is not usable in early boot stage.
:
:Cheers.

Hmm. Sascha, try changing the DRIVERSLEEPs to DELAYs in
/usr/src/sys/dev/disk/ata/ata-all.c and see if that fixes the problem.

Yonetani, could you put kprintf()'s around the DRIVERSLEEPs and tell
me if it hangs there or gets past them?

If worse comes to worse I'll back out that change, but I'd like to
try to track it down. I thought I was being conservative, I only
put them in the ata_reset() path (which runs without interrupts enabled).
It should be able to thread switch in there!

I will try loading HEAD onto my laptops to see if I can reproduce the
problem.

-Matt
Matthew Dillon
<>

#3 Updated by dillon almost 7 years ago

Ok, I reproduced the DRIVERSLEEP problem. I'm tracking it down.

-Matt

#4 Updated by dillon almost 7 years ago

Ok, its been fixed. Thread0 wasn't being put on the LWKT run queue,
so when DRIVERSLEEP called lwkt_switch(), poof, nothing left but
the idle thread.

Thanks!

-Matt
Matthew Dillon
<>

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