Re: [Qemu-devel] QEMU no longer debugable with recent gdb

[Jan Kiszka]

On 2013-02-25 15:15, Stefan Hajnoczi wrote:
> On Sun, Feb 24, 2013 at 02:03:51PM +0100, Jan Kiszka wrote:
>> Hi,
>>
>> running qemu-system-xxx under recent gdb gives me this instead of
>> starting QEMU:
>>
>> GNU gdb (GDB) 7.5.1
>> Copyright (C) 2012 Free Software Foundation, Inc.
>> License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
>> This is free software: you are free to change and redistribute it.
>> There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
>> and "show warranty" for details.
>> This GDB was configured as "x86_64-unknown-linux-gnu".
>> For bug reporting instructions, please see:
>> <http://www.gnu.org/software/gdb/bugs/>...
>> Reading symbols from qemu-system-arm...done.
>> (gdb) r
>> Starting program: qemu-system-arm 
>> Warning:
>> Cannot insert breakpoint -1.
>> Error accessing memory address 0x34e770: Input/output error.
>>
>>
>> Commenting out the JIT debug information or using a much older gdb
>> is currently the only option to debug QEMU here. It's affecting non-TCG
>> operation, too. Any ideas?
> 
> Works for me with GNU gdb (GDB) Fedora (7.5.1-32.fc18).
> 
> http://sourceware.org/bugzilla/show_bug.cgi?id=14585

Hmm, maybe fedora has a patch or a different configuration (I'm using
vanilla gdb).

Jan

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