Re: bin/47154

[Miwa Susumu <miwarin%gmail.com@localhost>]

The following reply was made to PR bin/47154; it has been noted by GNATS.

From: Miwa Susumu <miwarin%gmail.com@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: bin/47154
Date: Sat, 1 Nov 2014 00:06:12 +0900

 Is this malloc() bug?
 
 In my machine( NetBSD 6.1.5 i386 ), dd is segmentation fault.
 
 % dd if=/dev/zero of=hoge bs=4095m progress=1
 zsh: segmentation fault  dd if=/dev/zero of=hoge bs=4095m progress=1
 
 What is happening here.
 
 dd.c setup()
 
   if (!(ddflags & (C_BLOCK|C_UNBLOCK))) {
     if ((in.db = malloc(out.dbsz + in.dbsz - 1)) == NULL) {      <====
       err(EXIT_FAILURE, NULL);
       /* NOTREACHED */
     }
     out.db = in.db;
 
 
 note that, in.dbsz and out.dbsz is 4293918720.
 
 Do you need to limit size of malloc() ?
 
 -- 
 miwarin