[root@dell ~]# vbetool vbestate save
Allocated buffer at 0x20000 (base is 0x0)
ES: 0x2000 EBX: 0x0000
Segmentation fault (core dumped)

пересобрал с debug:
[root@dell ~]# gdb --core=core vbetool
GNU gdb 6.6-alt2 (ALT Linux)
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "x86_64-alt-linux"...
Using host libthread_db library "/lib64/libthread_db.so.1".
Reading symbols from /lib64/libc.so.6...done.
Loaded symbols for /lib64/libc.so.6
Reading symbols from /lib64/ld-linux-x86-64.so.2...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Core was generated by `vbetool vbestate save'.
Program terminated with signal 11, Segmentation fault.
#0  0x000000000042519f in rdb (addr=21423) at sys.c:234
234     sys.c: No such file or directory.
        in sys.c
(gdb) bt
#0  0x000000000042519f in rdb (addr=21423) at sys.c:234
#1  0x0000000000403fb6 in fetch_data_byte (offset=20399) at decode.c:308
#2  0x00000000004189eb in x86emuOp_add_byte_RM_R (op1=<value optimized out>) at
ops.c:135
#3  0x0000000000404e61 in X86EMU_exec () at decode.c:123
#4  0x0000000000402f47 in real_call (registers=0x7fff43548990) at thunk.c:202
#5  0x0000000000403065 in LRMI_int (num=16, registers=0x7fff43548990) at thunk.c:225
#6  0x00000000004022f3 in __save_state (psize=0x7fff435489fc) at vbetool.c:334
#7  0x0000000000402359 in save_state () at vbetool.c:347
#8  0x000000000040144a in main (argc=3, argv=0x7fff43548d68) at vbetool.c:72
(gdb)

vbetool-0.7-alt1
libvbe-2.0.3-alt1

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