Hello Manish
First, sorry for the late responce!
On Wed, 7 Oct 2009, Manish Katiyar wrote:
On Wed, Oct 7, 2009 at 7:51 PM, Holger Kiehl <Holger.Kiehl@xxxxxx> wrote:
Hello Manish
On Wed, 7 Oct 2009, Manish Katiyar wrote:
Hi Holger,
I don't have the source code, so a bit hard to guess. But you can try
to find out which member of your fsa structure is at offset 236 (0xec)
and look around those lines in the function where you are accessing
that member.
I am trying to download the AFD source code, which looks like it will
take ages on my slow broadband. Hopefully I can help after that.
If you download, please take afd-1.4.0-0.20.beta.tar.bz2 because that
is the one that caused the error. You can get it from:
ftp://ftp.dwd.de/pub/afd/development/afd-1.4.0-0.20.beta.tar.bz2
You will find the relevant code in src/fd.c.
Hi Holger,
(gdb) set $offset = (int)(&((struct filetransfer_status *)0)->host_status)
(gdb) p $offset
$5 = 236
(gdb) p/x 236
$6 = 0xec
host_status is at offset 236. In the function start_process I can see
that this is used at places by dereferencing below
"fsa[fsa_pos].host_status ".
At this point my guess would be that you are getting fsa_pos as
something illegal ie.. probably you are trying to access beyond the
array. Since this is an input to the function, you can just check its
value at the start and assert if that is ok and within reasonable
range.
HTH
Many thanks for finding this out! I think I now, with your help, have a
clue where the error could be. Is there a way to find out what value
fsa_pos had at that time? If it was -1 then it is definitely the error
I am thinking of, but if it is something else then I don't know.
Again many thanks for the valuable help!
Regards,
Holger
