From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754102Ab1IFI4h (ORCPT ); Tue, 6 Sep 2011 04:56:37 -0400 Received: from www17.your-server.de ([213.133.104.17]:37823 "EHLO www17.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754069Ab1IFI4Y (ORCPT ); Tue, 6 Sep 2011 04:56:24 -0400 Subject: binfmt_misc: hangs in syscall with x86 userland on x86_64 kernel From: Thomas Meyer To: viro@zeniv.linux.org.uk, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org Date: Tue, 06 Sep 2011 10:55:19 +0200 Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.0.2 (3.0.2-3.fc15) Content-Transfer-Encoding: 7bit Message-ID: <1315299323.7365.10.camel@localhost.localdomain> Mime-Version: 1.0 X-Authenticated-Sender: thomas@m3y3r.de Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org hello, something in the binfmt_misc filesystem system seems to be broken when trying to use this driver with an x86 user land on an x86_64 kernel. the command "ls /proc/sys/fs/binfmt_misc" seems to hang in the stat64 syscall: > stat64("/proc/sys/fs/binfmt_misc", 0x8bf68e8) = -1 EINTR (Interrupted system call) > --- {si_signo=SIGINT, si_code=SI_KERNEL, si_value={int=1248448068, ptr=0x4a69ce44}} (Interrupt) --- > +++ killed by SIGINT +++ I had to remove the systemd-binfmt register service from my default runlevel to get to a shell/X11. any ideas what's going on here? the program "systemd-binfmt" seems to hang in this open() syscall: > open("/proc/sys/fs/binfmt_misc/status", O_WRONLY|O_CREAT|O_TRUNC|O_LARGEFILE|O_CLOEXEC, 0666) = -1 EINTR (Interrupted system call) > --- {si_signo=SIGINT, si_code=SI_KERNEL, si_value={int=1248448068, ptr=0x4a69ce44}} (Interrupt) --- > +++ killed by SIGINT +++ with kind regards thomas