Bug 114044 - khubd segfaults when USB to serial converter disconnected
khubd segfaults when USB to serial converter disconnected
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
i386 Linux
medium Severity high
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Assigned To: Pete Zaitcev
Brian Brock
Depends On:
  Show dependency treegraph
Reported: 2004-01-21 15:15 EST by Tom Wood
Modified: 2007-04-18 13:01 EDT (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2004-09-30 11:41:48 EDT
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
/var/log/messages snippet of segfault (2.49 KB, text/plain)
2004-01-21 15:16 EST, Tom Wood
no flags Details
New kernel oops (4.95 KB, text/plain)
2004-01-22 10:25 EST, Tom Wood
no flags Details

  None (edit)
Description Tom Wood 2004-01-21 15:15:55 EST
Description of problem: khubd segfaults when Keyspan USA-49W USB to 4
port serial converter disconnected while serial device(s) attached to
it are transmitting/receiving data

Version-Release number of selected component (if applicable):

How reproducible: every time

Steps to Reproduce:
1.  Attach a Keyspan USA-49W or USA-49WLC 4 port USB to serial
converter to a RHL box.
2.  Attach serial device(s) to the Keyspan.
3.  Disconnect Keyspan from USB port on computer while devices passing
4.  Watch segfault that disables Keyspan until reboot.
Actual results:

Expected results:
hotplug deregisters device until replugged, then all is back
functioning normally

Additional info:
Comment 1 Tom Wood 2004-01-21 15:16:48 EST
Created attachment 97150 [details]
/var/log/messages snippet of segfault
Comment 2 Pete Zaitcev 2004-01-21 15:46:42 EST
Tom, does FC1 do same? You can install just the kernel, it is
mostly compatible with RHL 9. Make sure to get 2.4.22-1.2140 or later.
Comment 3 Tom Wood 2004-01-22 10:25:22 EST
Created attachment 97168 [details]
New kernel oops

kernel oops with fc1 2149 kernel.
Comment 4 Tom Wood 2004-01-22 10:26:10 EST
Using kernel-2.4.22-1.2149.nptl, the behavior is more robust.  A
segfault still occurs, this time in apd, but hotplug seems to work. 
See new attachment for the oops.
Comment 5 Pete Zaitcev 2004-01-22 11:09:40 EST
Tom, please grab full dmesg after the crash and attach it
(for two things - debug messages & general box setup like SMP)
Comment 6 Bugzilla owner 2004-09-30 11:41:48 EDT
Thanks for the bug report. However, Red Hat no longer maintains this version of
the product. Please upgrade to the latest version and open a new bug if the problem

The Fedora Legacy project (http://fedoralegacy.org/) maintains some older releases, 
and if you believe this bug is interesting to them, please report the problem in
the bug tracker at: http://bugzilla.fedora.us/

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