Red Hat Bugzilla – Bug 114044
khubd segfaults when USB to serial converter disconnected
Last modified: 2007-04-18 13:01:54 EDT
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.
hotplug deregisters device until replugged, then all is back
Created attachment 97150 [details]
/var/log/messages snippet of segfault
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.
Created attachment 97168 [details]
New kernel oops
kernel oops with fc1 2149 kernel.
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.
Tom, please grab full dmesg after the crash and attach it
(for two things - debug messages & general box setup like SMP)
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/