Bug 92052 - [ulpt] usbd causes defunct process with busy file-handle
Summary: [ulpt] usbd causes defunct process with busy file-handle
Status: Open
Alias: None
Product: Base System
Classification: Unclassified
Component: usb (show other bugs)
Version: Unspecified
Hardware: Any Any
: Normal Affects Only Me
Assignee: freebsd-usb (Nobody)
Depends on:
Reported: 2006-01-20 11:20 UTC by Vladimir Jakubal
Modified: 2018-01-03 05:13 UTC (History)
0 users

See Also:


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Description Vladimir Jakubal 2006-01-20 11:20:03 UTC
usbd driver with HP LaserJet 2200 connected on /dev/unlpt0.

turning off (disconnecting) the printer at the same time with running
process with opened file handle "/dev/unlpt0" causes fall-off of the
process to "Defunct" state. It cannot be killed and the device cannot
be used again even if reconnected before next restart of the system.

How-To-Repeat: Running process with opened file handle to /dev/unlpt0 (ulpt0 makes the same)
Turning off the printer (or disconnecting)
-> dmesg : ulpt0: at hub0 port1 (addr 2) disconnected
AND process becomes defunct. Cannot be killed (I/O usage).
Comment 1 Eitan Adler freebsd_committer freebsd_triage 2017-12-31 07:58:37 UTC
For bugs matching the following criteria:

Status: In Progress Changed: (is less than) 2014-06-01

Reset to default assignee and clear in-progress tags.

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