[Qemu-devel] qemu segfault, possible VNC related?

[Kolbe Kegel]

Hi,

I've only recently begun using QEMU, and I'm having problems with 
frequent segfaults when I try to boot from an Ubuntu live CD.

This is 0.8.2, and I verified this on 2 separate machines.

Oddly, when I started QEMU w/ the -s option and connected gdb remotely, 
Ubuntu booted to its desktop without any problems.

I don't have SDL available to test at this time, but some initial 
observations suggest that this segfault may only occur when connecting 
to the VNC server using TightVNC.

I believe the problems are related to VNC, based on this backtrace:

[Switching to Thread 182894085344 (LWP 27253)]
0x0000003243270fb7 in memset () from /lib64/tls/libc.so.6
(gdb) bt
#0  0x0000003243270fb7 in memset () from /lib64/tls/libc.so.6
#1  0x000000000045bb58 in protocol_client_msg (vs=0x25e3e80, 
data=Variable "data" is not available.
) at /data1/users/kkegel/qemu-0.8.2/vnc.c:735
#2  0x000000000045ae2f in vnc_client_read (opaque=Variable "opaque" is 
not available.
) at /data1/users/kkegel/qemu-0.8.2/vnc.c:582
#3  0x00000000004091cd in main_loop_wait (timeout=Variable "timeout" is 
not available.
) at /data1/users/kkegel/qemu-0.8.2/vl.c:5013
#4  0x0000000000409358 in main_loop () at 
/data1/users/kkegel/qemu-0.8.2/vl.c:5112
#5  0x000000000040a6a5 in main (argc=7, argv=0x2) at 
/data1/users/kkegel/qemu-0.8.2/vl.c:6221
(gdb) bt full
#0  0x0000003243270fb7 in memset () from /lib64/tls/libc.so.6
No symbol table info available.
#1  0x000000000045bb58 in protocol_client_msg (vs=0x25e3e80, 
data=Variable "data" is not available.
) at /data1/users/kkegel/qemu-0.8.2/vnc.c:735
        i = Variable "i" is not available.


Let me know if there is further information I can provide that may be of 
use.

(forgive me for not checking for forums; Host qemu.dad-answers.com not 
found: 3(NXDOMAIN))

Thanks!

Kolbe Kegel