Re: memory hog script crashes bash with segfault

[Konstantin Khlebnikov]

On Fri, Sep 11, 2015 at 3:52 PM, Chet Ramey <chet.ramey@case.edu> wrote:
> On 9/11/15 2:19 AM, Konstantin Khlebnikov wrote:
>> $ ./bash -c ":(){ : $@$@;};: :"
>> Segmentation fault
>
> This is not a memory allocation problem.  You have defined an infinitely
> recursive function that, when executed, eventually exceeds your stack size
> resource limit.  When that happens, the kernel sends a SIGSEGV.

Yep. But this not happens if command runs in interactive mode.
Bash uses default stack (with MAP_GROWSDOWN) in interactive mode
and fixed size stack for "-c" ?

>
> --
> ``The lyf so short, the craft so long to lerne.'' - Chaucer
>                  ``Ars longa, vita brevis'' - Hippocrates
> Chet Ramey, ITS, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/