Hi, For xen domain dump image, read_in_kernel_config() calls gdb_interface() like following backtrace, and crash exits with a fatal error "crash: gdb_interface: gdb not initialized?". #0 gdb_interface (req=0x83c54a0) at gdb_interface.c:301 #1 0x0810ef5c in datatype_info (name=0x8303513 "vcpu_guest_context", member=0x8304b38 "ctrlreg", dm=0x0) at symbols.c:3648 #2 0x080fcff0 in x86_xendump_p2m_create (xd=0x83aaa80) at x86.c:4345 #3 0x081381ed in xc_core_p2m_create () at xendump.c:952 #4 0x08135bbb in xc_core_read (bufptr=0x8403be8, cnt=1568, addr=3223390688, paddr=2165216) at xendump.c:131 #5 0x081372d9 in read_xendump (fd=-1, bufptr=0x8403be8, cnt=1568, addr=3223390688, paddr=2165216) at xendump.c:663 #6 0x08095d07 in readmem (addr=3223390688, memtype=1, buffer=0x8403be8, size=32768, type=0x82fe2da "kernel_config_data", error_handle=2) at memory.c:1563 #7 0x080e57a8 in read_in_kernel_config (command=0) at kernel.c:5113 #8 0x080825ce in main (argc=3, argv=0xafa7ba54) at main.c:383 I made following patch which changes timing to read ikconfig data after gdb initialize. This is checked by compile and run for xendump on x86_32 and x86_32pae. diff -u crash-4.0-3.1/kernel.c crash-4.0-3.1.patched/kernel.c --- crash-4.0-3.1/kernel.c 2006-08-05 00:24:00.000000000 +0900 +++ crash-4.0-3.1.patched/kernel.c 2006-08-18 20:07:52.000000000 +0900 @@ -152,6 +152,7 @@ break; case POST_GDB: + read_in_kernel_config(IKCFG_INIT); if (symbol_exists("__per_cpu_offset")) { i = get_array_length("__per_cpu_offset", NULL, 0); get_symbol_data("__per_cpu_offset", diff -u crash-4.0-3.1/main.c crash-4.0-3.1.patched/main.c --- crash-4.0-3.1/main.c 2006-08-05 00:24:00.000000000 +0900 +++ crash-4.0-3.1.patched/main.c 2006-08-18 20:10:34.000000000 +0900 @@ -380,7 +380,6 @@ machdep_init(PRE_SYMTAB); symtab_init(); machdep_init(PRE_GDB); - read_in_kernel_config(IKCFG_INIT); datatype_init(); /* -- Kazuo Moriwaka <moriwaka(a)valinux.co.jp&gt;