Re: kern/49287: something wrong between exec_script and compat32

[David Holland <dholland%eecs.harvard.edu@localhost>]

The following reply was made to PR kern/49287; it has been noted by GNATS.

From: David Holland <dholland%eecs.harvard.edu@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/49287: something wrong between exec_script and compat32
Date: Wed, 22 Oct 2014 19:57:18 -0400

 On Wed, Oct 22, 2014 at 09:05:02PM +0000, Christos Zoulas wrote:
  >  Can't reproduce this on my amd64 box running current. I untarred
  >  base and etc from the latest i386 build, chrooted inside that
  >  directory and ran usr/bin/true.
 
 I reproduced it with current (both amd64 and i386) from 20141017 -
 maybe it's been fixed since then, but I doubt it.
 
 I couldn't reproduce the crash, but I did get the corrupted argv. (I
 suspect the crash depends on exactly the right combination of
 circumstances.)
 
 Try one of these:
    ------
 #include <stdio.h>
 int main(int argc, char *argv[]) {
    for (int i=0; i<=argc; i++) printf("%d: %s\n", i, argv[i]);
 }
    ------
 and make it the interpreter of a script, then run the script, both
 with and without arguments. 
 
 -- 
    - David A. Holland / dholland%eecs.harvard.edu@localhost