Date: Fri, 20 Jan 2006 11:18:12 GMT From: Vladimir Jakubal <hugo@gjk.cz> To: freebsd-gnats-submit@FreeBSD.org Subject: usb/92052: usbd causes defunct process with busy file-handle Message-ID: <200601201118.k0KBICim073668@www.freebsd.org> Resent-Message-ID: <200601201120.k0KBK4VS098616@freefall.freebsd.org>
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>Number: 92052
>Category: usb
>Synopsis: usbd causes defunct process with busy file-handle
>Confidential: no
>Severity: critical
>Priority: high
>Responsible: freebsd-usb
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri Jan 20 11:20:03 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator: Vladimir Jakubal
>Release: 6.0
>Organization:
GJK
>Environment:
6.0-RELEASE FreeBSD 6.0-RELEASE #3 ... i386
>Description:
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).
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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