Re: [Qemu-devel] A error when gdb the newest branch, can you help me? Thank you very much!

[Zhi Hui Li]

On 2012年04月16日 17:50, Stefan Hajnoczi wrote:
> On Mon, Apr 16, 2012 at 3:58 AM, Zhi Hui Li<address@hidden>  wrote:
> > when I git pull to the newest branch, then
> >
> > gdb ./x86_64-softmmu/qemu-system-x86_64
> >
> > set args, then run the gdb, but have the error:
> >
> > Warning:
> > Cannot insert breakpoint -1.
> > Error accessing memory address 0x2b6688: Input/output error.
>
> I tried to reproduce this but it works on my machine with gdb 7.4-debian.
>
> Is your system up-to-date?  Do you have any special security activated
> (SELinux, grsec, etc) which might prevent ptrace?
>
> Stefan

Thank you very much for your feedback, I found the reason:

when I git pull to the newest branch then use gdb 7.2, the error will 
happen, when I update gdb to 7.3, That is ok.
But I don't know the reason. Maybe the newest branch brings something 
which don't compatible with gdb.