Re: [arm-gnu] Irregular segfault in application

[Carlos O'Donell <carlos@xxxxxxxxxxxxxxxx>]

On 21/05/10 10:41 AM, Juergen Schindele wrote:
> Hello Developers,
> we have a strange problem when booting the filesystem from a true-IDE Compact-Flash.
> In one of three cases the concerned application crashes with segfault. We are able to
> to call the application with prependend strace to see the passed syscall of the app.
> We are clueless with this problem and hope to get some hints.
>
> Here the details
> we are using gcc with glibc from "codesourcery" in version
> "gcc (CodeSourcery Sourcery G++ Lite 2007q1-10) 4.2.0 20070413 (prerelease)"
> kernel-version is 2.6.20.21 with EABI on a custom board with
> CPU: XScale-PXA270 [69054117] revision 7 (ARMv5TE), cr=0000397f
> the concerned application is "chat" (for talking to modems).
> We are compiling with "-mlittle-endian -march=iwmmxt -mcpu=iwmmxt -msoft-float" options.
> What i noticed when comparing the strace dump between good and bad case
> is that one syscall in the bad case seems to have faulty parameters.
>
> I'd like to have your advice on this behaviour / bug ???
> As the syscalls are generate by glibc is there a problem ???

I would suggest:

(1) Make sure you are using the CodeSourcery C library on the target.
(2) Experiment with a newer version of the tools.

Cheers,
Carlos.
--
Carlos O'Donell
CodeSourcery
carlos@xxxxxxxxxxxxxxxx
(650) 331-3385 x716