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Bug 11436 - ifdown hangs on Multia
ifdown hangs on Multia
Product: Red Hat Linux
Classification: Retired
Component: initscripts (Show other bugs)
alpha Linux
medium Severity medium
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Assigned To: Bill Nottingham
: 17009 (view as bug list)
Depends On:
  Show dependency treegraph
Reported: 2000-05-16 04:38 EDT by Bas Vermeulen
Modified: 2014-03-16 22:13 EDT (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2000-05-19 17:35:41 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Bas Vermeulen 2000-05-16 04:38:47 EDT
When bringing down an interface with ifdown, it hangs on the
check_default_route in ifdown-post. Afaics this evaluates to the
following code:

return `/sbin/route -n|gawk 'BEGIN{r=1} $3=="" && $4=="UG" {r=0}
END{print r}'`

When I do this at the prompt, I can see the gawk call taking 99% of the
cpu time. I'm not sure what causes this, but it is 99% reproducable on
this particular box. I haven't seen it on my Intel boxes yet.

Information on the machine:

DEC Multia (ev4 166MHz (UDB))
Comment 1 Bill Nottingham 2000-05-16 12:17:59 EDT
What happens if you link awk to mawk?
Comment 2 mchampig 2000-05-19 17:35:59 EDT
I hope this isn't the same problem the Jensen was having (also another EV4
based box). Jensen's hang when using gawk but mawk works fine. I think it
was traced to a floating point emulation problem in the kernel. My Multia
is a slightly newer EV45 (233Mhz) and doesn't have this problem.
Comment 3 Bill Nottingham 2000-07-20 03:21:40 EDT
closed, lack of input from original poster.
Comment 4 Bill Nottingham 2000-08-30 16:05:45 EDT
*** Bug 17009 has been marked as a duplicate of this bug. ***
Comment 5 Simon Hill 2000-09-01 00:18:55 EDT
This bug is fixed by EV4 FPE kernel patch, see bug #17163.

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