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From: "support" <support@richardlinux.net>
Date: Wed, 26 Jan 2005 08:01:14 
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Subject: [Qemu-devel] Segmentation Fault
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To: qemu-devel@nongnu.org

Good people,

I lost count trying to install Windows XP with Qemu without success.  I am working with Fedora Core 3 and tried qemu and winxp using the official FC3 Kernel (2.6.10-1.741_FC3), cusomised Kernel (2.6.10-ck5), gcc-3.4.2, gcc-3.4.3, with ready made FC3 0.6.1 rpm package, and with the latest snapshot (2005-01-24) (./configure --prefix=/usr, make, make install).  The problem is a nusty segmentation fault.  Considering Windows XP takes a few hours to reach this point you can understand my frustration (it always happens at approximately the same stage of the winxp installation).

Here is a gdb dump -

Program received signal SIGSEGV, Segmentation fault.
0x0884ae8c in code_gen_buffer ()
(gdb) bt
#0  0x0884ae8c in code_gen_buffer ()
#1  0x08092039 in cpu_x86_exec (env1=0x9b96958)
    at /home/systema/qemu/cpu-exec.c:543
#2  0x0804d0bf in main_loop () at /home/systema/qemu/vl.c:2679
#3  0x0804e307 in main (argc=0, argv=0xffdff000)
    at /home/systema/qemu/vl.c:3675


(gdb) bt full
#0  0x0884ae8c in code_gen_buffer ()
No symbol table info available.
#1  0x08092039 in cpu_x86_exec (env1=0x9b96958)
    at /home/systema/qemu/cpu-exec.c:543
        ptb = (TranslationBlock **) 0x9b97474
        tb = (TranslationBlock *) 0x811ad020
        saved_T0 = 163146072
        saved_T1 = 0
        saved_T2 = 0
        saved_env = (CPUX86State *) 0xbff5b248
        code_gen_size = 0
        ret = 256
        interrupt_request = 0
        tb = (TranslationBlock *) 0x833cc64
        ptb = (TranslationBlock **) 0x82e022c
        cs_base = 0
        pc = 2152578619
        tc_ptr = (
    unsigned char *) 0x811ad020 <Address 0x811ad020 out of bounds>
        flags = 2740
#2  0x0804d0bf in main_loop () at /home/systema/qemu/vl.c:2679
        ret = -2128949216
        timeout = 163148916
        env = (CPUX86State *) 0x7589f029
#3  0x0804e307 in main (argc=0, argv=0xffdff000)
    at /home/systema/qemu/vl.c:3675
        p = 0x1010101 <Address 0x1010101 out of bounds>
        fd = 163148916
        use_gdbstub = 16843009
        gdbstub_port = 16843009
        i = 6
        has_cdrom = 16843009
        snapshot = 16843009
        env = (CPUX86State *) 0x6
        initrd_filename = 0x1010101 <Address 0x1010101 out of bounds>
        hd_filename = {0x0, 0x0, 0x0, 0x0}
        fd_filename = {0x1010101 <Address 0x1010101 out of bounds>,
  0x1010101 <Address 0x1010101 out of bounds>}
        kernel_filename = 0x1010101 <Address 0x1010101 out of bounds>
        kernel_cmdline = 0x1010101 <Address 0x1010101 out of bounds>
        cyls = 16843009
        heads = 16843009
        secs = 16843009
        translation = 16843009
        start_emulation = 16843009
        macaddr = "\000\000\000\000\000"
        net_if_type = 16843009
        nb_tun_fds = 16843009
        tun_fds = {0, 0, 0, 0, 0, 0, 0, 0}
        optind = 16843009
        r = 0xffdff128 <Address 0xffdff128 out of bounds>
        optarg = 0x0
        monitor_hd = (CharDriverState *) 0x9b97474
        monitor_device = '\0' <repeats 127 times>
        serial_devices = {'\0' <repeats 127 times>, '\0' <repeats 127 times>,
  '\0' <repeats 127 times>, '\0' <repeats 127 times>}
        serial_device_index = 16843009
        parallel_devices = {'\0' <repeats 127 times>,
  '\0' <repeats 127 times>, '\0' <repeats 127 times>}
        parallel_device_index = 16843009
        loadvm = 0x1010101 <Address 0x1010101 out of bounds>
(gdb)

Any help appreciated.