From owner-freebsd-arm@freebsd.org  Sun Aug 30 06:21:03 2015
Return-Path: <owner-freebsd-arm@freebsd.org>
Delivered-To: freebsd-arm@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id B443F9C09C5
 for <freebsd-arm@mailman.ysv.freebsd.org>;
 Sun, 30 Aug 2015 06:21:03 +0000 (UTC)
 (envelope-from jasone@canonware.com)
Received: from canonware.com (canonware.com [204.109.63.53])
 (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 9A3C71B4E;
 Sun, 30 Aug 2015 06:21:03 +0000 (UTC)
 (envelope-from jasone@canonware.com)
Received: from [127.0.0.1] (lyk.canonware.com [204.109.63.53])
 (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by canonware.com (Postfix) with ESMTPSA id 762912878D;
 Sat, 29 Aug 2015 23:14:24 -0700 (PDT)
Content-Type: text/plain; charset=us-ascii
Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2104\))
Subject: Re: arm64: userspace broken with jemalloc 4.0.0
From: Jason Evans <jasone@canonware.com>
In-Reply-To: <55E22CC0.9000306@citrix.com>
Date: Sat, 29 Aug 2015 23:14:23 -0700
Cc: jasone@freebsd.org, andrew@fubar.geek.nz,
 freebsd-arm <freebsd-arm@freebsd.org>
Content-Transfer-Encoding: quoted-printable
Message-Id: <52BA8254-5B14-45BC-A434-3DE3E2A9F37B@canonware.com>
References: <55E22CC0.9000306@citrix.com>
To: Julien Grall <julien.grall@citrix.com>
X-Mailer: Apple Mail (2.2104)
X-BeenThere: freebsd-arm@freebsd.org
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: "Porting FreeBSD to ARM processors." <freebsd-arm.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-arm>,
 <mailto:freebsd-arm-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arm/>
List-Post: <mailto:freebsd-arm@freebsd.org>
List-Help: <mailto:freebsd-arm-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-arm>,
 <mailto:freebsd-arm-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 30 Aug 2015 06:21:03 -0000

On Aug 29, 2015, at 3:05 PM, Julien Grall <julien.grall@citrix.com> =
wrote:
> I've built the latest freebsd master (r287263) for arm64 today. While
> trying to use the userspace I hit some ASSERT in jemalloc:
>=20
> # ls
> <jemalloc>: =
/usr/src/freebsd/lib/libc/../../contrib/jemalloc/include/jemalloc/internal=
/arena.h:571: Failed assertion: "pageind >=3D map_bias"
> pid 21 (ls), uid 0: exited on signal 6
> Abort trap
>=20
> It's happening every time with the command "ls".
>=20
> I tried to use the previous version of jemalloc (i.e reverting
> all the patches up to "Update jemalloc to version 4.0.0" included)
> and everything is working.
>=20
> Note that I'm using Freebsd as a Xen ARM guest although the only
> difference is the version of jemalloc (4.0.0 vs 3.6.0).
>=20
> Does anyone using arm64 have seen a similar ASSERT?
>=20
> BTW, is there any way to rebuild only the libc rather than doing
> make buildworld everytime I modified the jemalloc code?

What is the page size on arm64?  If it's greater than 8 KiB, I know what =
the problem is and have a patch that I've already tested and can =
integrate tomorrow when I'm awake enough not fat-finger it.

	=
https://github.com/jemalloc/jemalloc/commit/5ef33a9f2b9f4fb56553529f7b31f4=
f5f57ce014

Thanks,
Jason