On Mon, Apr 16, 2012 at 3:58 AM, Zhi Hui Li <zhihu...@linux.vnet.ibm.com> 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