Your message dated Wed, 26 Oct 2011 18:16:11 +0200
with message-id <[email protected]>
and subject line Re: Bug#646411: 3.1-rcX (8,9,10): kernel does not validate
swapfile on disk(?) - WAS: vnc4server 4.1.1+X4.3.0-3 crashing under normal use
has caused the Debian Bug report #646411,
regarding 3.1-rcX (8,9,10): kernel does not validate swapfile on disk(?) - WAS:
vnc4server 4.1.1+X4.3.0-3 crashing under normal use
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.
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--
646411: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=646411
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: vnc4server
Version: 4.1.1+X4.3.0-3
Architecture: amd64 (x86-64)
Kernel: 3.0-rc9
Current theory--
(Debian, ) You can close the bug report, my .swapfile was corrupted it
appears! When I ran swapoff -a and re-launched VNC it did not crash
anymore, unbelievable, I am also cc'ing the kernel mailing list on this one,
how come the kernel does not ALARM or WARN or BUG() when there is a problem
with the swapfile, is there no validation?
I was testing many 3.1.0-rcX kernels (some of them crashed my machine) and
it must have corrupted that file. The weird part is it only seemed to
(mainly) affect VNC, I also saw a coredump with xfs_db (randomly) and a
memtest86+ showed ok after 1-2 passes.
Of course it was the last thing I decided to rule out and that was it-- it
appears, so far it has not crashed in over an hour, whereas it would crash
immediately in the past, over and over for several days so I stopped using
VNC until I had time to look into this problem further.
Very interesting and putting this out there incase anyone else sees this
problem in the future, maybe it will help someone else. But I wish the
kernel would alarm if there were some problem with the swapfile.. Even
when swap was not in use, the presence of the [bad] file would cause vnc
to coredump quickly (after launching chrome/thunderbird/etc) After a
swapoff -a -- all problems, gone. All is back to normal now.
I waited a few hours before sending this, still no problems/errors, very
interesting, will update if any future coredumps, but none yet..
Justin.
Problem: About 1-2 weeks ago (I apt-get dist-upgrade regularly), VNC server
began crashing, e.g. if you launch thunderbird/google chrome or other
windows, the VNC server crashes.
May be related to:
http://old.nabble.com/Bug-424860%3A-eclipse-randomly-crashes-(VNC)-X-server-p11945956.html
http://forums.fedoraforum.org/showthread.php?t=246145
Example:
$ strace -o /tmp/out -f Xvnc -geometry 1920x1200 -depth 24 -rfbauth
~/.vnc/passwd :1
Xvnc Free Edition 4.1.1 - built Mar 10 2010 22:35:30
Copyright (C) 2002-2005 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.
Underlying X server release 40300000, The XFree86 Project, Inc
Sat Oct 22 19:38:49 2011
vncext: VNC extension running!
vncext: Listening for VNC connections on port 5901
vncext: created VNC server for screen 0
error opening security policy file /etc/X11/xserver/SecurityPolicy
Could not init font path element /usr/share/fonts/X11/Speedo/, removing from
list!
Could not init font path element /usr/share/fonts/X11/CID/, removing from
list!
Sat Oct 22 19:38:51 2011
Connections: accepted: 0.0.0.0::53214
SConnection: Client needs protocol version 3.8
SConnection: Client requests security type VncAuth(2)
Sat Oct 22 19:38:53 2011
VNCSConnST: Server default pixel format depth 24 (32bpp) little-endian
bgr888
VNCSConnST: Client pixel format depth 8 (8bpp) rgb max 3,3,3 shift 4,2,0
VNCSConnST: Client pixel format depth 24 (32bpp) little-endian rgb888
Segmentation fault (core dumped)
--
Core backtrace:
$ gdb /usr/bin/Xvnc ./core.Xvnc.26042
GNU gdb (GDB) 7.3-debian
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/bin/Xvnc...(no debugging symbols found)...done.
[New LWP 26042]
warning: Can't read pathname for load map: Input/output error.
Core was generated by `Xvnc -geometry 1920x1200 -depth 24 -rfbauth
/home/user/.vnc/passwd :1'.
Program terminated with signal 11, Segmentation fault.
#0 0x00000000004cbed4 in ?? ()
(gdb) bt
#0 0x00000000004cbed4 in ?? ()
#1 0x00000000004dd577 in ?? ()
#2 0x00000000005832a2 in ?? ()
#3 0x00000000005834ff in ?? ()
#4 0x0000000000426d90 in ?? ()
#5 0x000000000040be86 in ?? ()
#6 0x00007f070be96ead in __libc_start_main ()
from /lib/x86_64-linux-gnu/libc.so.6
#7 0x0000000000409259 in ?? ()
#8 0x00007fff22a53788 in ?? ()
#9 0x000000000000001c in ?? ()
#10 0x0000000000000008 in ?? ()
#11 0x00007fff22a54b2e in ?? ()
#12 0x00007fff22a54b33 in ?? ()
#13 0x00007fff22a54b3d in ?? ()
#14 0x00007fff22a54b47 in ?? ()
#15 0x00007fff22a54b4e in ?? ()
#16 0x00007fff22a54b51 in ?? ()
#17 0x00007fff22a54b5a in ?? ()
#18 0x00007fff22a54b70 in ?? ()
#19 0x0000000000000000 in ?? ()
(gdb)
--
Strace output: (4M)
http://home.comcast.net/~jpiszcz/20111022/vnc-strace.out
From the $HOME/.vnc/*log file:
(xfdesktop:5201): Wnck-CRITICAL **: wnck_workspace_get_number: assertion
`WNCK_IS_WORKSPACE (space)' failed
libpager-Message: Setting the pager rows returned false. Maybe the setting is
not applied.
Sat Oct 22 14:26:14 2011
Connections: accepted: 0.0.0.0::49493
SConnection: Client needs protocol version 3.8
SConnection: Client requests security type VncAuth(2)
Sat Oct 22 14:26:15 2011
VNCSConnST: Server default pixel format depth 24 (32bpp) little-endian
bgr888
VNCSConnST: Client pixel format depth 8 (8bpp) rgb max 3,3,3 shift 4,2,0
Sat Oct 22 14:26:16 2011
VNCSConnST: Client pixel format depth 24 (32bpp) little-endian rgb888
Gkr-Message: secret service operation failed: The name
org.freedesktop.secrets was not provided by any .service files
XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":1"
after 143 requests (143 known processed) with 0 events remaining.
xfce4-panel: Fatal IO error 11 (Resource temporarily unavailable) on X server
:1.0.
xfdesktop: Fatal IO error 11 (Resource temporarily unavailable) on X server
:1.0.
[31476:31476:297527619035:ERROR:chrome_browser_main_x11.cc(57)] X IO Error
detected
xfwm4: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.0.
xfce4-session: Fatal IO error 11 (Resource temporarily unavailable) on X
server :1.
XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":1"
after 64951 requests (64951 known processed) with 0 events remaining.
Thunar: Fatal IO error 11 (Resource temporarily unavailable) on X server
:1.0.
wrapper: Fatal IO error 11 (Resource temporarily unavailable) on X server
:1.0.
running 'ssh-agent -s -k'
xfsettingsd: Fatal IO error 11 (Resource temporarily unavailable) on X server
:1.
unset SSH_AUTH_SOCK;
unset SSH_AGENT_PID;
echo Agent pid 5181 killed;
--
Thoughts?
Justin.
--- End Message ---
--- Begin Message ---
Ok, thanks. Closing the bug.
Best regards,
// Ola
On Sun, Oct 23, 2011 at 08:00:56PM -0400, Justin Piszcz wrote:
> Package: vnc4server
> Version: 4.1.1+X4.3.0-3
> Architecture: amd64 (x86-64)
> Kernel: 3.0-rc9
>
> Current theory--
>
> (Debian, ) You can close the bug report, my .swapfile was corrupted it
> appears! When I ran swapoff -a and re-launched VNC it did not crash
> anymore, unbelievable, I am also cc'ing the kernel mailing list on this
> one,
> how come the kernel does not ALARM or WARN or BUG() when there is a
> problem with the swapfile, is there no validation?
>
> I was testing many 3.1.0-rcX kernels (some of them crashed my machine)
> and it must have corrupted that file. The weird part is it only seemed
> to (mainly) affect VNC, I also saw a coredump with xfs_db (randomly) and
> a memtest86+ showed ok after 1-2 passes.
>
> Of course it was the last thing I decided to rule out and that was it--
> it appears, so far it has not crashed in over an hour, whereas it would
> crash immediately in the past, over and over for several days so I
> stopped using VNC until I had time to look into this problem further.
>
> Very interesting and putting this out there incase anyone else sees this
> problem in the future, maybe it will help someone else. But I wish the
> kernel would alarm if there were some problem with the swapfile.. Even
> when swap was not in use, the presence of the [bad] file would cause vnc
> to coredump quickly (after launching chrome/thunderbird/etc) After a
> swapoff -a -- all problems, gone. All is back to normal now.
>
> I waited a few hours before sending this, still no problems/errors, very
> interesting, will update if any future coredumps, but none yet..
>
> Justin.
>
>
>>
>> Problem: About 1-2 weeks ago (I apt-get dist-upgrade regularly), VNC server
>> began crashing, e.g. if you launch thunderbird/google chrome or other
>> windows, the VNC server crashes.
>>
>> May be related to:
>> http://old.nabble.com/Bug-424860%3A-eclipse-randomly-crashes-(VNC)-X-server-p11945956.html
>> http://forums.fedoraforum.org/showthread.php?t=246145
>>
>> Example:
>>
>> $ strace -o /tmp/out -f Xvnc -geometry 1920x1200 -depth 24 -rfbauth
>> ~/.vnc/passwd :1
>>
>> Xvnc Free Edition 4.1.1 - built Mar 10 2010 22:35:30
>> Copyright (C) 2002-2005 RealVNC Ltd.
>> See http://www.realvnc.com for information on VNC.
>> Underlying X server release 40300000, The XFree86 Project, Inc
>>
>>
>> Sat Oct 22 19:38:49 2011
>> vncext: VNC extension running!
>> vncext: Listening for VNC connections on port 5901
>> vncext: created VNC server for screen 0
>> error opening security policy file /etc/X11/xserver/SecurityPolicy
>> Could not init font path element /usr/share/fonts/X11/Speedo/, removing
>> from list!
>> Could not init font path element /usr/share/fonts/X11/CID/, removing
>> from list!
>>
>> Sat Oct 22 19:38:51 2011
>> Connections: accepted: 0.0.0.0::53214
>> SConnection: Client needs protocol version 3.8
>> SConnection: Client requests security type VncAuth(2)
>>
>> Sat Oct 22 19:38:53 2011
>> VNCSConnST: Server default pixel format depth 24 (32bpp) little-endian
>> bgr888
>> VNCSConnST: Client pixel format depth 8 (8bpp) rgb max 3,3,3 shift 4,2,0
>> VNCSConnST: Client pixel format depth 24 (32bpp) little-endian rgb888
>> Segmentation fault (core dumped)
>>
>> --
>>
>> Core backtrace:
>>
>> $ gdb /usr/bin/Xvnc ./core.Xvnc.26042
>> GNU gdb (GDB) 7.3-debian
>> Copyright (C) 2011 Free Software Foundation, Inc.
>> License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
>> This is free software: you are free to change and redistribute it.
>> There is NO WARRANTY, to the extent permitted by law. Type "show copying"
>> and "show warranty" for details.
>> This GDB was configured as "x86_64-linux-gnu".
>> For bug reporting instructions, please see:
>> <http://www.gnu.org/software/gdb/bugs/>...
>> Reading symbols from /usr/bin/Xvnc...(no debugging symbols found)...done.
>> [New LWP 26042]
>>
>> warning: Can't read pathname for load map: Input/output error.
>> Core was generated by `Xvnc -geometry 1920x1200 -depth 24 -rfbauth
>> /home/user/.vnc/passwd :1'.
>> Program terminated with signal 11, Segmentation fault.
>> #0 0x00000000004cbed4 in ?? ()
>> (gdb) bt
>> #0 0x00000000004cbed4 in ?? ()
>> #1 0x00000000004dd577 in ?? ()
>> #2 0x00000000005832a2 in ?? ()
>> #3 0x00000000005834ff in ?? ()
>> #4 0x0000000000426d90 in ?? ()
>> #5 0x000000000040be86 in ?? ()
>> #6 0x00007f070be96ead in __libc_start_main ()
>> from /lib/x86_64-linux-gnu/libc.so.6
>> #7 0x0000000000409259 in ?? ()
>> #8 0x00007fff22a53788 in ?? ()
>> #9 0x000000000000001c in ?? ()
>> #10 0x0000000000000008 in ?? ()
>> #11 0x00007fff22a54b2e in ?? ()
>> #12 0x00007fff22a54b33 in ?? ()
>> #13 0x00007fff22a54b3d in ?? ()
>> #14 0x00007fff22a54b47 in ?? ()
>> #15 0x00007fff22a54b4e in ?? ()
>> #16 0x00007fff22a54b51 in ?? ()
>> #17 0x00007fff22a54b5a in ?? ()
>> #18 0x00007fff22a54b70 in ?? ()
>> #19 0x0000000000000000 in ?? ()
>> (gdb)
>>
>> --
>>
>>
>> Strace output: (4M)
>> http://home.comcast.net/~jpiszcz/20111022/vnc-strace.out
>>
>> From the $HOME/.vnc/*log file:
>>
>> (xfdesktop:5201): Wnck-CRITICAL **: wnck_workspace_get_number:
>> assertion `WNCK_IS_WORKSPACE (space)' failed
>> libpager-Message: Setting the pager rows returned false. Maybe the
>> setting is not applied.
>>
>> Sat Oct 22 14:26:14 2011
>> Connections: accepted: 0.0.0.0::49493
>> SConnection: Client needs protocol version 3.8
>> SConnection: Client requests security type VncAuth(2)
>>
>> Sat Oct 22 14:26:15 2011
>> VNCSConnST: Server default pixel format depth 24 (32bpp) little-endian
>> bgr888
>> VNCSConnST: Client pixel format depth 8 (8bpp) rgb max 3,3,3 shift 4,2,0
>>
>> Sat Oct 22 14:26:16 2011
>> VNCSConnST: Client pixel format depth 24 (32bpp) little-endian rgb888
>> Gkr-Message: secret service operation failed: The name
>> org.freedesktop.secrets was not provided by any .service files
>> XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":1"
>> after 143 requests (143 known processed) with 0 events remaining.
>> xfce4-panel: Fatal IO error 11 (Resource temporarily unavailable) on X
>> server :1.0.
>> xfdesktop: Fatal IO error 11 (Resource temporarily unavailable) on X
>> server :1.0.
>> [31476:31476:297527619035:ERROR:chrome_browser_main_x11.cc(57)] X IO
>> Error detected
>> xfwm4: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.0.
>> xfce4-session: Fatal IO error 11 (Resource temporarily unavailable) on
>> X server :1.
>> XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":1"
>> after 64951 requests (64951 known processed) with 0 events remaining.
>> Thunar: Fatal IO error 11 (Resource temporarily unavailable) on X
>> server :1.0.
>> wrapper: Fatal IO error 11 (Resource temporarily unavailable) on X
>> server :1.0.
>> running 'ssh-agent -s -k'
>> xfsettingsd: Fatal IO error 11 (Resource temporarily unavailable) on X
>> server :1.
>> unset SSH_AUTH_SOCK;
>> unset SSH_AGENT_PID;
>> echo Agent pid 5181 killed;
>>
>>
>> --
>>
>> Thoughts?
>>
>> Justin.
>>
>
>
>
--
--------------------- Ola Lundqvist ---------------------------
/ [email protected] Annebergsslingan 37 \
| [email protected] 654 65 KARLSTAD |
| http://inguza.com/ +46 (0)70-332 1551 |
\ gpg/f.p.: 7090 A92B 18FE 7994 0C36 4FE4 18A1 B1CF 0FE5 3DD9 /
---------------------------------------------------------------
--- End Message ---
