linux-kernel - 3.1-rc9: Xvnc segmentation fault/coredump

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Date:	Mon, 10 Oct 2011 06:02:29 -0400 (EDT)
From:	Justin Piszcz <jpiszcz@...idpixels.com>
To:	linux-kernel@...r.kernel.org
cc:	vnc-list@...lvnc.com
Subject: 3.1-rc9: Xvnc segmentation fault/coredump

Hello,

Summary: vncserver crashes with 3.1-rc9 when launching 
thunderbird and chrome (usually reproducible)

Problem: With 3.1-rc9 -- vncserver (both vnc-4_1_3-x86_linux) and the 
package in Debian: 4.1.1+X4.3.0-37 both core dump under 3.1-rc9 when I 
launch a couple of applications, thunderbird and chrome, these 
applications were also upgraded around the time I went to 3.1-rc9 so I 
cannot be certain which is causing the crashes.  I cannot change the 
kernel for a while, machine is in production now; however, I have been
following the 3.1-rc's for awhile and all were OK (ran -rc8) for 
the longest until -rc9.  There appears to be no quick/fast 
debug package available for vncserver; however, I will show/describe it as 
best as I can.

1. Start vnc: vncserver -geometry 1920x1200 :1 -depth 24
2. Launch latest thunderbird, then chrome, then Xvnc crashes, dumps core.

Core with Debian's 4.1.1+X4.3.0-37
-rw------- 1 bob users  60551168 Oct 10 05:01 core.Xvnc4.7121

Core with realvnc's latest VNC on website (4.1.3):
-rw------- 1 bob users  67252224 Oct 10 05:11 core.Xvnc.9631

Obviously without a debug version, the output is not meaningful, however, 
I was curious if ayone had seen anything like this with 3.1-rc9?

Core was generated by `Xvnc4 :1 -desktop p34:1 (bob) -auth /home/bob/.Xauthority -geometry 1920x1200 -'.
Program terminated with signal 11, Segmentation fault.
#0  0x00000000004cbed4 in ?? ()
(gdb) bt full
#0  0x00000000004cbed4 in ?? ()
No symbol table info available.
#1  0x00000000004dd577 in ?? ()
No symbol table info available.
#2  0x00000000005832a2 in ?? ()
No symbol table info available.
#3  0x00000000005834ff in ?? ()
No symbol table info available.
#4  0x0000000000426d90 in ?? ()
No symbol table info available.
#5  0x000000000040be86 in ?? ()
No symbol table info available.
#6  0x00007f78bc27eead in __libc_start_main ()
    from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#7  0x0000000000409259 in ?? ()
No symbol table info available.
#8  0x00007fff81ea1f58 in ?? ()
No symbol table info available.
#9  0x000000000000001c in ?? ()
No symbol table info available.
#10 0x0000000000000015 in ?? ()
No symbol table info available.
---Type <return> to continue, or q <return> to quit---
#11 0x00007fff81ea2cbc in ?? ()
No symbol table info available.
#12 0x00007fff81ea2cc2 in ?? ()
No symbol table info available.
#13 0x00007fff81ea2cc5 in ?? ()
No symbol table info available.
#14 0x00007fff81ea2cce in ?? ()
No symbol table info available.
#15 0x00007fff81ea2cda in ?? ()
No symbol table info available.
#16 0x00007fff81ea2ce0 in ?? ()
No symbol table info available.
#17 0x00007fff81ea2cf6 in ?? ()
No symbol table info available.
#18 0x00007fff81ea2d00 in ?? ()
No symbol table info available.
#19 0x00007fff81ea2d0a in ?? ()
No symbol table info available.
#20 0x00007fff81ea2d11 in ?? ()
No symbol table info available.
#21 0x00007fff81ea2d14 in ?? ()
No symbol table info available.
#22 0x00007fff81ea2d1d in ?? ()
---Type <return> to continue, or q <return> to quit---
No symbol table info available.
#23 0x00007fff81ea2d23 in ?? ()
No symbol table info available.
#24 0x00007fff81ea2d2c in ?? ()
No symbol table info available.
#25 0x00007fff81ea2d42 in ?? ()
No symbol table info available.
#26 0x00007fff81ea2d4b in ?? ()
No symbol table info available.
#27 0x00007fff81ea2d50 in ?? ()
No symbol table info available.
#28 0x00007fff81ea2d54 in ?? ()
No symbol table info available.
#29 0x00007fff81ea2d58 in ?? ()
No symbol table info available.
#30 0x00007fff81ea2e68 in ?? ()
No symbol table info available.
#31 0x00007fff81ea2e6c in ?? ()
No symbol table info available.
#32 0x0000000000000000 in ?? ()
No symbol table info available.
(gdb)

Justin.

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