From owner-freebsd-fs@FreeBSD.ORG  Wed Apr 22 21:20:35 2015
Return-Path: <owner-freebsd-fs@FreeBSD.ORG>
Delivered-To: freebsd-fs@FreeBSD.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id A3D537C1
 for <freebsd-fs@FreeBSD.org>; Wed, 22 Apr 2015 21:20:35 +0000 (UTC)
Received: from kenobi.freebsd.org (kenobi.freebsd.org
 [IPv6:2001:1900:2254:206a::16:76])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 8EE4F1738
 for <freebsd-fs@FreeBSD.org>; Wed, 22 Apr 2015 21:20:35 +0000 (UTC)
Received: from bugs.freebsd.org ([127.0.1.118])
 by kenobi.freebsd.org (8.14.9/8.14.9) with ESMTP id t3MLKZcx072741
 for <freebsd-fs@FreeBSD.org>; Wed, 22 Apr 2015 21:20:35 GMT
 (envelope-from bugzilla-noreply@freebsd.org)
From: bugzilla-noreply@freebsd.org
To: freebsd-fs@FreeBSD.org
Subject: [Bug 199189] SWAP on ZFS can crash server
Date: Wed, 22 Apr 2015 21:20:34 +0000
X-Bugzilla-Reason: AssignedTo
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: Base System
X-Bugzilla-Component: kern
X-Bugzilla-Version: 10.1-STABLE
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: Affects Many People
X-Bugzilla-Who: marcus@blazingdot.com
X-Bugzilla-Status: New
X-Bugzilla-Priority: ---
X-Bugzilla-Assigned-To: freebsd-fs@FreeBSD.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: cc
Message-ID: <bug-199189-3630-CfBjfppkOH@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-199189-3630@https.bugs.freebsd.org/bugzilla/>
References: <bug-199189-3630@https.bugs.freebsd.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-BeenThere: freebsd-fs@freebsd.org
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: Filesystems <freebsd-fs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-fs>,
 <mailto:freebsd-fs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-fs/>
List-Post: <mailto:freebsd-fs@freebsd.org>
List-Help: <mailto:freebsd-fs-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
 <mailto:freebsd-fs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 22 Apr 2015 21:20:35 -0000

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=199189

marcus@blazingdot.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |marcus@blazingdot.com

--- Comment #8 from marcus@blazingdot.com ---
For what it's worth, I've been doing swap on a zvol for a long time now on
-CURRENT without problems.  Using "-o checksum=off -o compression=off -o
dedup=off -o sync=disabled -o primarycache=none" seems to be key.

I've hammered on it quite a bit to try and get it to crash.  My memory
allocator looks different from yours; this one is faster but just sets the
memory to zeroes with explicit_bzero().

#include <stdlib.h>
#include <stdio.h>
#include <strings.h>

#define HUNK 1048576

int main(void) {
    unsigned long long i;
    for(i = 0 ; ; i++) {
        explicit_bzero(malloc(HUNK), HUNK);
        printf("\r%llu", i * HUNK);
        fflush(stdout);
    };
    return(EXIT_SUCCESS);
}

-- 
You are receiving this mail because:
You are the assignee for the bug.