Re: [LTP] [EXT] Re: [PATCH v9 00/24] ILP32 for ARM64

Yury Norov
2019-05-14T23:42:10Z

On Tue, May 14, 2019 at 12:43:11PM +0200, Cyril Hrubis wrote:
> Hi!
> > > There is a problem with the stack size accounting during execve when
> > > there is no stack limit:
> > >
> > > $ ulimit -s
> > > 8192
> > > $ ./hello.ilp32
> > > Hello World!
> > > $ ulimit -s unlimited
> > > $ ./hello.ilp32
> > > Segmentation fault
> > > $ strace ./hello.ilp32
> > > execve("./hello.ilp32", ["./hello.ilp32"], 0xfffff10548f0 /* 77 vars */) = -1 ENOMEM (Cannot allocate memory)
> > > +++ killed by SIGSEGV +++
> > > Segmentation fault (core dumped)
> > >
> > > Andreas.
> >
> > Thanks Andreas, I will take a look. Do we have such test in LTP?
>
> We do have a test that we can run a binary with very small stack size
> i.e. 512kB but there does not seem to be anything that would catch this
> specific problem.
>
> Can you please open an issue and describe how to reproduce the problem
> at our github tracker:
>
> https://github.com/linux-test-project/ltp/issues
>
> Then we can create testcase based on that reproducer later on.

This is it:
https://github.com/linux-test-project/ltp/issues/530

Yury

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