CMU 7.1 - xterm crashing (575 Views)
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Advisor
BrentGee
Posts: 24
Registered: ‎11-01-2013
Message 1 of 8 (575 Views)
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CMU 7.1 - xterm crashing

Anybody else experiencing xterm crashing during the following conditions:

 

- using VSP to watch a node boot

- at some point during service initialization the screen just disappears and the following error occurs:

 

*** glibc detected *** /usr/bin/xterm: free(): invalid pointer: 0x0000000001bbea70 ***
======= Backtrace: =========
...

whole bunch of stuff ...

...

======= Memory map: ========

...

whole bunch of libs listed

...

 

My OS is centos6.4 and the version of xterm, according to rpm -qa, is xterm-253-1.el6.x86_64 -- which I believe is the latest.

 

Any info would be extremely appreciated.

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Advisor
Rakshika
Posts: 14
Registered: ‎03-12-2012
Message 2 of 8 (547 Views)

Re: CMU 7.1 - xterm crashing

Hello,

 

Please clarify what operation were you performing when you saw xterm disappearing.

where did you see this glibc stack trace?

 

Can you please send us whole stack trace ?

 

Regards,

Rakshika Gupta

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Advisor
BrentGee
Posts: 24
Registered: ‎11-01-2013
Message 3 of 8 (537 Views)

Re: CMU 7.1 - xterm crashing

Hi:

 

Thanks very much for your reply. The operations I performed were as follows:

 

- selected the compute node in question in the CMU GUI

- right-clicked and selected "Virtual Serial Port"

- logged in via the VSP connection and typed reboot

- watched it reboot (saw POST, saw GRUB) right up until the initialization scripts kicked in

- then the window disappeared

- and the following output was spit out to an open terminal connected to the CMU server node:

 

[root@orca-dev ~]# *** glibc detected *** /usr/bin/xterm: free(): invalid pointer: 0x0000000001600ee0 ***
======= Backtrace: =========
/lib64/libc.so.6[0x3b39c76126]
/usr/bin/xterm[0x42d29d]
/usr/bin/xterm[0x42d868]
/usr/bin/xterm[0x430449]
/usr/bin/xterm[0x438a32]
/usr/bin/xterm[0x415209]
/usr/bin/xterm[0x418ab1]
/usr/bin/xterm[0x418bf2]
/usr/bin/xterm[0x424125]
/lib64/libc.so.6(__libc_start_main+0xfd)[0x3b39c1ecdd]
/usr/bin/xterm[0x4069c9]
======= Memory map: ========
00400000-0045b000 r-xp 00000000 68:02 666713                             /usr/bin/xterm
0065b000-00664000 rw-p 0005b000 68:02 666713                             /usr/bin/xterm
00664000-00665000 rw-p 00000000 00:00 0
00863000-00867000 rw-p 00063000 68:02 666713                             /usr/bin/xterm
015a3000-01629000 rw-p 00000000 00:00 0                                  [heap]
3b39400000-3b39420000 r-xp 00000000 68:02 1572871                        /lib64/ld-2.12.so
3b3961f000-3b39620000 r--p 0001f000 68:02 1572871                        /lib64/ld-2.12.so
3b39620000-3b39621000 rw-p 00020000 68:02 1572871                        /lib64/ld-2.12.so
3b39621000-3b39622000 rw-p 00000000 00:00 0
3b39c00000-3b39d8a000 r-xp 00000000 68:02 1572878                        /lib64/libc-2.12.so
3b39d8a000-3b39f89000 ---p 0018a000 68:02 1572878                        /lib64/libc-2.12.so
3b39f89000-3b39f8d000 r--p 00189000 68:02 1572878                        /lib64/libc-2.12.so
3b39f8d000-3b39f8e000 rw-p 0018d000 68:02 1572878                        /lib64/libc-2.12.so
3b39f8e000-3b39f93000 rw-p 00000000 00:00 0
3b3a000000-3b3a002000 r-xp 00000000 68:02 1595533                        /lib64/libdl-2.12.so
3b3a002000-3b3a202000 ---p 00002000 68:02 1595533                        /lib64/libdl-2.12.so
3b3a202000-3b3a203000 r--p 00002000 68:02 1595533                        /lib64/libdl-2.12.so
3b3a203000-3b3a204000 rw-p 00003000 68:02 1595533                        /lib64/libdl-2.12.so
3b3a400000-3b3a45a000 r-xp 00000000 68:02 672650                         /usr/lib64/libXaw7.so.7.0.0
3b3a45a000-3b3a659000 ---p 0005a000 68:02 672650                         /usr/lib64/libXaw7.so.7.0.0
3b3a659000-3b3a664000 rw-p 00059000 68:02 672650                         /usr/lib64/libXaw7.so.7.0.0
3b3c000000-3b3c002000 r-xp 00000000 68:02 657363                         /usr/lib64/libXau.so.6.0.0
3b3c002000-3b3c202000 ---p 00002000 68:02 657363                         /usr/lib64/libXau.so.6.0.0
3b3c202000-3b3c203000 rw-p 00002000 68:02 657363                         /usr/lib64/libXau.so.6.0.0
3b3c400000-3b3c41d000 r-xp 00000000 68:02 657265                         /usr/lib64/libxcb.so.1.1.0
3b3c41d000-3b3c61d000 ---p 0001d000 68:02 657265                         /usr/lib64/libxcb.so.1.1.0
3b3c61d000-3b3c61e000 rw-p 0001d000 68:02 657265                         /usr/lib64/libxcb.so.1.1.0
3b3c800000-3b3c937000 r-xp 00000000 68:02 657805                         /usr/lib64/libX11.so.6.3.0
3b3c937000-3b3cb37000 ---p 00137000 68:02 657805                         /usr/lib64/libX11.so.6.3.0
3b3cb37000-3b3cb3d000 rw-p 00137000 68:02 657805                         /usr/lib64/libX11.so.6.3.0
3b3d000000-3b3d012000 r-xp 00000000 68:02 657809                         /usr/lib64/libXext.so.6.4.0
3b3d012000-3b3d212000 ---p 00012000 68:02 657809                         /usr/lib64/libXext.so.6.4.0
3b3d212000-3b3d213000 rw-p 00012000 68:02 657809                         /usr/lib64/libXext.so.6.4.0
3b3d400000-3b3d498000 r-xp 00000000 68:02 657208                         /usr/lib64/libfreetype.so.6.3.22
3b3d498000-3b3d697000 ---p 00098000 68:02 657208                         /usr/lib64/libfreetype.so.6.3.22
3b3d697000-3b3d69d000 rw-p 00097000 68:02 657208                         /usr/lib64/libfreetype.so.6.3.22
3b3d800000-3b3d826000 r-xp 00000000 68:02 1572953                        /lib64/libexpat.so.1.5.2
3b3d826000-3b3da25000 ---p 00026000 68:02 1572953                        /lib64/libexpat.so.1.5.2
3b3da25000-3b3da28000 rw-p 00025000 68:02 1572953                        /lib64/libexpat.so.1.5.2
3b3e000000-3b3e034000 r-xp 00000000 68:02 657827                         /usr/lib64/libfontconfig.so.1.4.4
3b3e034000-3b3e234000 ---p 00034000 68:02 657827                         /usr/lib64/libfontconfig.so.1.4.4
3b3e234000-3b3e236000 rw-p 00034000 68:02 657827                         /usr/lib64/libfontconfig.so.1.4.4
3b3e400000-3b3e409000 r-xp 00000000 68:02 657821                         /usr/lib64/libXrender.so.1.3.0
3b3e409000-3b3e609000 ---p 00009000 68:02 657821                         /usr/lib64/libXrender.so.1.3.0
3b3e609000-3b3e60a000 rw-p 00009000 68:02 657821                         /usr/lib64/libXrender.so.1.3.0
3b3f000000-3b3f009000 r-xp 00000000 68:02 657825                         /usr/lib64/libXcursor.so.1.0.2
3b3f009000-3b3f209000 ---p 00009000 68:02 657825                         /usr/lib64/libXcursor.so.1.0.2
3b3f209000-3b3f20a000 rw-p 00009000 68:02 657825                         /usr/lib64/libXcursor.so.1.0.2
3b3f400000-3b3f405000 r-xp 00000000 68:02 657815                         /usr/lib64/libXfixes.so.3.1.0
3b3f405000-3b3f605000 ---p 00005000 68:02 657815                         /usr/lib64/libXfixes.so.3.1.0
3b3f605000-3b3f606000 rw-p 00005000 68:02 657815                         /usr/lib64/libXfixes.so.3.1.0
3b3fc00000-3b3fc18000 r-xp 00000000 68:02 657819                         /usr/lib64/libXmu.so.6.2.0
3b3fc18000-3b3fe18000 ---p 00018000 68:02 657819                         /usr/lib64/libXmu.so.6.2.0
3b3fe18000-3b3fe1a000 rw-p 00018000 68:02 657819                         /usr/lib64/libXmu.so.6.2.0
3b40000000-3b40016000 r-xp 00000000 68:02 1595538                        /lib64/libgcc_s-4.4.7-20120601.so.1
3b40016000-3b40215000 ---p 00016000 68:02 1595538                        /lib64/libgcc_s-4.4.7-20120601.so.1
3b40215000-3b40216000 rw-p 00015000 68:02 1595538                        /lib64/libgcc_s-4.4.7-20120601.so.1
3b40c00000-3b40c04000 r-xp 00000000 68:02 1595549                        /lib64/libuuid.so.1.3.0
3b40c04000-3b40e03000 ---p 00004000 68:02 1595549                        /lib64/libuuid.so.1.3.0
3b40e03000-3b40e04000 rw-p 00003000 68:02 1595549                        /lib64/libuuid.so.1.3.0
3b41000000-3b41007000 r-xp 00000000 68:02 657183                         /usr/lib64/libSM.so.6.0.1

 

I hope this helps. Please let me know, if you need any additional log info. I will also be running tests to see if I can figure out at which exact point in the boot process the error is triggered.

 

Thank you again for your help,

Brent.

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Advisor
BrentGee
Posts: 24
Registered: ‎11-01-2013
Message 4 of 8 (533 Views)

Re: CMU 7.1 - xterm crashing

Just performed a quick test.

 

On the CMU server node, I launched xterm from the console (ie. NOT from the CMU GUI interface), I logged to the compute node's management processor (ILO2), typed "vsp" and then once again rebooted the node. This time xterm DID NOT crash, so I don't think that this is a problem with xterm itself.

 

Are there any settings in cmuserver.conf (with regard to CMU's xterm config) that could be a contributing factor?

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Advisor
BrentGee
Posts: 24
Registered: ‎11-01-2013
Message 5 of 8 (527 Views)

Re: CMU 7.1 - xterm crashing

Second quick test. I switched from xterm to gnome-terminal (via edits to the the cmuserver.conf) and I was unable to replicate the crash. The setting switched were the following:

 

# ***** settings for Gnome 2.30  *****
# NOTE: the '--disable-factory' flag is mandatory for broadcast
#
CMU_REMOTE_TERMINAL_CMD_OPT="-x"
CMU_REMOTE_TERMINAL="/usr/bin/gnome-terminal"
CMU_REMOTE_TERMINAL_DISPLAY_OPT="--display"
CMU_REMOTE_TERMINAL_TITLE_OPT="--title"
CMU_REMOTE_TERMINAL_NAME_OPT="--name"
CMU_REMOTE_TERMINAL_GEOMETRY_OPT="--geometry"
CMU_REMOTE_TERMINAL_MINIMIZE_OPT="none"
CMU_REMOTE_TERMINAL_GEOMETRY_PIXEL_MODE="no"
CMU_REMOTE_TERMINAL_OPTIONS="--window-with-profile=cmu"
CMU_BROADCAST_TERMINAL_OPTIONS="none"

# ***** settings for Xterm *****
#CMU_REMOTE_TERMINAL="/usr/bin/xterm"
#CMU_REMOTE_TERMINAL_DISPLAY_OPT="-display"
#CMU_REMOTE_TERMINAL_TITLE_OPT="-title"
#CMU_REMOTE_TERMINAL_OPTIONS="-fg white -bg black -sb"
#CMU_REMOTE_TERMINAL_GEOMETRY_OPT="-geometry"
#CMU_REMOTE_TERMINAL_GEOMETRY_PIXEL_MODE="no"
#CMU_REMOTE_TERMINAL_CMD_OPT="-e"
#CMU_REMOTE_TERMINAL_NAME_OPT="-n"
#CMU_BROADCAST_TERMINAL_OPTIONS="+sb -fg black -bg white -font 5x8 -rv"
#CMU_REMOTE_TERMINAL_MINIMIZE_OPT="-iconify"

I would happily use gnome-terminal for everything (it seemed quite stable on my setup). However, I can't seem to figure out how to use it for "multiple windows broadcasts." If there was a way to to switch completely to gnome-terminal, I would leave xterm in the dust and consider this issue resolved.

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Advisor
Rakshika
Posts: 14
Registered: ‎03-12-2012
Message 6 of 8 (497 Views)

Re: CMU 7.1 - xterm crashing

Hello,

Thanks for details.

 

For gnome-terminal broadcast, change settings for gnome-terminal in cmuserver.conf;

     #CMU_BROADCAST_TERMINAL_OPTIONS="none" 

     CMU_BROADCAST_TERMINAL_OPTIONS="--disable-factory --window-with-profile=broadcast"

Gnome-terminal is not that stable, it varies  a lot between configurations. This setting may work with your configuration. 

 

 

Regards,

Rakshika Gupta

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Advisor
BrentGee
Posts: 24
Registered: ‎11-01-2013
Message 7 of 8 (489 Views)

Re: CMU 7.1 - xterm crashing

Hi:

 

Thank you for the suggestion. I tried it but, you are right, gnome-terminal is not stable and the windows just never materialized. Therefore, the solution was NOT successful.

 

Back to square one...

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Advisor
BrentGee
Posts: 24
Registered: ‎11-01-2013
Message 8 of 8 (467 Views)

Re: CMU 7.1 - xterm crashing

Work around in place. Compliled my own xterm. Issue is resolved. See here.

http://h30499.www3.hp.com/t5/HP-Insight-Cluster-Management/CMU-7-1-New-Info-xterm-crashing/m-p/62848...

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