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Date: Thu, 3 Apr 1997 07:51:36 -0800 (PST)
From: paul@kryten.woc.atinc.com
To: freebsd-gnats-submit@freebsd.org
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Subject: kern/3186: sys call shm_get() broken in 2.2.1-RELEASE, but OK in 2.1.0-RELEASE
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>Number:         3186
>Category:       kern
>Synopsis:       sys call shm_get() broken in 2.2.1-RELEASE, but OK in 2.1.0-RELEASE
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Apr  3 08:00:01 PST 1997
>Last-Modified:
>Originator:     Paul Berner
>Organization:
A&T, Inc.
>Release:        2.2.1-RELEASE & 2.1.0-RELEASE
>Environment:
FreeBSD kiawah.woc.Atinc.COM 2.2.1-RELEASE FreeBSD 2.2.1-RELEASE 
#0: Tue Mar 25 15:12:02 GMT 1997     jkh@time.cdrom.com:/usr/src/sys/compile/GENERIC  i386
>Description:
Call to shm_get() produces:
Bad system call (core dumped)

>How-To-Repeat:
make this program:

#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>

int main()
{
        key_t           key = 6575;
        int             area_a_id;

#ifndef SHM_R
#define SHM_R           000400 
#define SHM_W           000200 
#endif

/* set up shared memory regions */
        area_a_id = shmget(key, 64*sizeof(double),
                        IPC_CREAT|SHM_R|SHM_W|(SHM_R>>3)|(SHM_R>>6));
    return 0;
}

/* works fine in 2.1.0-R,  but cores in 2.2.1-R */
>Fix:

>Audit-Trail:
>Unformatted: