Re: [Qemu-devel] [PATCH 0/2] Fix wide ioport access cracking

[Avi Kivity <avi@redhat.com>]

On 08/11/2011 07:20 PM, Avi Kivity wrote:
> On 08/11/2011 07:08 PM, Gerhard Wiesinger wrote:
>>
>> (gdb) frame 4
>> #4  0x000000000041eb9b in pci_update_mappings (d=0x1a90bc0)
>>     at /root/download/qemu/git/qemu-kvm-test/hw/pci.c:1134
>> 1134                memory_region_del_subregion(r->address_space, 
>> r->memory);
>> (gdb) print i
>> $1 = <value optimized out>
>> (gdb) print *r
>> $2 = {addr = 22058952032257, size = 32, filtered_size = 
>> 171717340864446496,
>>   type = 1 '\001', memory = 0x1a90000, address_space = 0x200019282f0}
>> (gdb) print d->io_regions[0]
>> $3 = {addr = 22058952032257, size = 32, filtered_size = 
>> 171717340864446496,
>>   type = 1 '\001', memory = 0x1a90000, address_space = 0x200019282f0}
>
> Yikes, this looks like corruption, it the leading 0x2000 in 
> address_space is out of place.
>
> Can you step through lsi pci bar registration and place a data 
> breakpoint on address_space, and see where it gets this value?
>
> 'addr' looks bad too.
>

Or maybe it's just -O2 screwing up debug information.  Please change 
./configure to set -O1 and redo.

Please print *r.memory as well.


-- 
error compiling committee.c: too many arguments to function