If you need more informations, tests and/or logs tell me and I'll post
them.
Whoever looks into this would be greatly helped:
- if you bisected the issue (between 1.6 and 2.0-rcX),
I tried time ago qemu 1.7 and qemu 2.0 on start of development without
problem on domUs start but I'll retry.
- if you posted qemu's backtrace at the sigsegv.
I tried to use gdb following this old post:
https://lists.gnu.org/archive/html/qemu-devel/2011-12/msg02575.html
but with same changes:
/usr/lib/xen/bin# vi qemu-system-i386
#!/bin/sh
exec gdbserver 0.0.0.0:1234 /usr/lib/xen/bin/qemu-system-i386.bak "$@"
gdb /usr/lib/xen/bin/qemu-system-i386.bak
target remote localhost:1234
This command with gdb on qemu fails:
xl -vvv create /etc/xen/wheezy.cfg
...
libxl: error: libxl_dm.c:1378:device_model_spawn_outcome: domain 13
device model: spawn failed (rc=-3)
libxl: error: libxl_create.c:1207:domcreate_devmodel_started: device
model did not start: -3
libxl: debug: libxl_dm.c:1485:kill_device_model: Device Model signaled
...
the dom0 syslog show segfault also in this case and the qemu log is
different on first lines (probably for gdbserver):
less /var/log/xen/qemu-dm-wheezy.log
Process /usr/lib/xen/bin/qemu-system-i386.bak created; pid = 8238
Listening on port 1234
Remote debugging from host 127.0.0.1
xc: error: linux_gnttab_set_max_grants: ioctl SET_MAX_GRANTS failed (22
= Invalid argument): Internal error
xen be: qdisk-51712: xc_gnttab_set_max_grants failed: Invalid argument
gdb on xl create show:
(gdb) target remote localhost:1234
Remote debugging using localhost:1234
Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols
found)...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
0x00007ffff7dddaf0 in ?? () from /lib64/ld-linux-x86-64.so.2
(gdb)
(gdb) bt full
#0 0x00007ffff7dddaf0 in ?? () from /lib64/ld-linux-x86-64.so.2
No symbol table info available.
#1 0x0000000000000013 in ?? ()
No symbol table info available.
#2 0x00007fffffffe871 in ?? ()
No symbol table info available.
#3 0x00007fffffffe897 in ?? ()
No symbol table info available.
#4 0x00007fffffffe8a2 in ?? ()
No symbol table info available.
#5 0x00007fffffffe8a5 in ?? ()
No symbol table info available.
#6 0x00007fffffffe8ae in ?? ()
No symbol table info available.
#7 0x00007fffffffe8ef in ?? ()
No symbol table info available.
#8 0x00007fffffffe8f4 in ?? ()
No symbol table info available.
#9 0x00007fffffffe913 in ?? ()
No symbol table info available.
#10 0x00007fffffffe91f in ?? ()
No symbol table info available.
#11 0x00007fffffffe92b in ?? ()
No symbol table info available.
#12 0x00007fffffffe931 in ?? ()
---Type <return> to continue, or q <return> to quit---
the qemu include debug and is not stripped:
file /usr/lib/xen/bin/qemu-system-i386.bak
/usr/lib/xen/bin/qemu-system-i386.bak: ELF 64-bit LSB shared object,
x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for
GNU/Linux 2.6.26,
BuildID[sha1]=0x5aa043b5524d74d166ead62527343080384d586b, not stripped
and I also tried:
aptitude install libc6-dbg
but same result.
I not understand what I missed for correct xl create and/or gdb
informations.
Can someone help me please?
Thanks for any reply
Laszlo