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Bug#690848: marked as done (usbutils: lsusb is frozen solid, after a general protection fault in a ttyACM0 access)

Your message dated Sun, 07 Feb 2016 22:43:09 +0000
with message-id <E1aSY2v-0006Kd-W6@deadeye>
and subject line Closing bugs assigned to linux-2.6 package
has caused the Debian Bug report #690848,
regarding usbutils: lsusb is frozen solid, after a general protection fault in a ttyACM0 access
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
690848: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=690848
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: usbutils
Version: 0.87-5squeeze1
Severity: grave
Justification: renders package unusable


A Texas Instruments Launcpad is connected as the sole
USB device, resulting in device /dev/ttyACM0 showing up.
No TI drivers were installed, or any specific usb-drivers.

A simple program in Forth does some direct read and write on ttyACM0,
while the device is responding. It functions properly, except for
situation where an output stream of the device is interrupted from the
terminal.
It is possible that the device and the program were writing simultaneously.

This message appeared on the console:
"
,   2 Oct 18 14:50 ptmx
albert@cherry:~/PROJECT/nometa$
Message from syslogd@cherry at Oct 18 14:50:37 ...
 kernel:[15594.923330] general protection fault: 0000 [#1] SMP

Message from syslogd@cherry at Oct 18 14:50:37 ...
 kernel:[15594.923334] last sysfs file: /sys/devices/pci0000:00/0000:00:02.0/usb2/idVendor

Message from syslogd@cherry at Oct 18 14:50:37 ...
 kernel:[15594.923415] Stack:

Message from syslogd@cherry at Oct 18 14:50:37 ...
 kernel:[15594.923426] Call Trace:

Message from syslogd@cherry at Oct 18 14:50:37 ...
 kernel:[15594.923490] Code: 85 c0 75 15 65 48 8b 04 25 c8 cb 00 00 48 2d d8 1f 00 00 48
89 43 18 31 c0 5b c3 53 48 89 fb 48 83 ec 10 e8 31 f8 ff ff 48 89 df <f0> ff 0f 79 05 e8
48 ff ff ff 65 48 8b 04 25 c8 cb 00 00 48 2d

"

This is the program that provoked the problem:
"
   \ $Id: com-4e5.frt,v 1.1 2012/10/17 13:21:34 albert Exp albert $
   \ Copyright (2012): Albert van der Horst {by GNU Public License}

   WANT R/W             WANT NEW-IF          WANT $-PREFIX
   WANT ls
   WANT CASE-SENSITIVE      CASE-INSENSITIVE

   NAMESPACE MSP-NAMESPACE
   MSP-NAMESPACE DEFINITIONS

   : NEW-OK    CR "com>" TYPE ;
   'NEW-OK 'OK 3 CELLS MOVE

   : INTRO "Type HELP for help." TYPE CR ;

   VARIABLE (msp)
   \ Return the FILEDESCRIPTOR of the MSP board.
   : msp (msp) @ ;

   : ?ERR   ( ior -- ) -1 SWAP ?ERROR ;

   : open-connection "/dev/ttyACM0" R/W OPEN-FILE ?ERR (msp) ! ;
   : close-connection msp CLOSE-FILE ?ERR ;

   \ Return a CHARACTER or 0 if non present.
   : ?get?   0 DSP@ 1 msp READ-FILE ?ERR DROP ;

   \ If a key is present, pass that character to the msp,
   : ?put?    KEY? IF KEY DSP@ 1 msp WRITE-FILE ?ERR DROP THEN ;

   \ Get all data from msp, up till XON.
   : handshake  10 MS BEGIN ?put? ?get? DUP $11 <> WHILE EMIT REPEAT DROP ;

   : line  msp WRITE-FILE ?ERR     ^M DSP@ 1 msp WRITE-FILE ?ERR DROP ;

   : uploaded
     GET-FILE  open-connection
     BEGIN   OVER WHILE    ^J $/ -TRAILING line handshake REPEAT 2DROP
     close-connection ;
   : upload NAME uploaded ;

   : communicate open-connection "" line handshake
     BEGIN !CSP (ACCEPT) -TRAILING DUP WHILE line handshake ?CSP REPEAT 2DROP
     close-connection ;

   'communicate ALIAS c
   'upload ALIAS u
   'ls ALIAS l

   : HELP "C(ommunicate) U(pload $1) L(ist dir $1) BYE" TYPE CR ;

   : doit INTRO OK 'ERROR RESTORED MSP-NAMESPACE QUIT ;
"
OPEN-FILE, READ-FILE and WRITE-FILE  are mapped to system calls, no dynamic
libraries involved.

The program above was no longer able communicate.
After the message lsusb was types:
It gave no output and could not be terminated by ^C or ^\.

-- System Information:
Debian Release: 6.0.5
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.32-5-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=ANSI_X3.4-1968) (ignored: LC_ALL set to C)
Shell: /bin/sh linked to /bin/dash

Versions of packages usbutils depends on:
ii  libc6                   2.11.3-4         Embedded GNU C Library: Shared lib
ii  libusb-0.1-4            2:0.1.12-16      userspace USB programming library
ii  zlib1g                  1:1.2.3.4.dfsg-3 compression library - runtime

usbutils recommends no packages.

Versions of packages usbutils suggests:
ii  wget                          1.12-2.1   retrieves files from the web

-- no debconf information

--- End Message ---
--- Begin Message --- 
Version: 3.4.1-1~experimental.1+rm

Debian 6.0 Long Term Support has now ended, and the 'linux-2.6' source
package will no longer be updated.  This bug is being closed on the
assumption that it does not affect the kernel versions in newer Debian
releases.

If you can still reproduce this bug in a newer release, please reopen
the bug report and reassign it to 'src:linux' and the affected version
of the package.  You can find the package version for the running
kernel by running:

    uname -v

or the versions of all installed kernel packages by running:

    dpkg -l 'linux-image-[34]*' | grep ^.i

and looking at the third column.

I apologise that we weren't able to provide a specific resolution for
this bug.

Ben.

-- 
Ben Hutchings - Debian developer, member of Linux kernel and LTS teams

--- End Message ---
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