From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37805) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YV4q6-0003Gj-27 for qemu-devel@nongnu.org; Mon, 09 Mar 2015 17:03:51 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YV4q0-0000I1-Ps for qemu-devel@nongnu.org; Mon, 09 Mar 2015 17:03:49 -0400 Received: from e9.ny.us.ibm.com ([32.97.182.139]:43579) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YV4q0-0000GP-K3 for qemu-devel@nongnu.org; Mon, 09 Mar 2015 17:03:44 -0400 Received: from /spool/local by e9.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 9 Mar 2015 17:03:39 -0400 Received: from b01cxnp22033.gho.pok.ibm.com (b01cxnp22033.gho.pok.ibm.com [9.57.198.23]) by d01dlp03.pok.ibm.com (Postfix) with ESMTP id 29F07C90042 for ; Mon, 9 Mar 2015 16:54:47 -0400 (EDT) Received: from d01av01.pok.ibm.com (d01av01.pok.ibm.com [9.56.224.215]) by b01cxnp22033.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id t29L3aVn26149114 for ; Mon, 9 Mar 2015 21:03:36 GMT Received: from d01av01.pok.ibm.com (localhost [127.0.0.1]) by d01av01.pok.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id t29L3K3n003018 for ; Mon, 9 Mar 2015 17:03:21 -0400 Received: from [9.2.140.32] (dhcp-9-2-140-32.watson.ibm.com [9.2.140.32]) by d01av01.pok.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id t29L3J86002696 for ; Mon, 9 Mar 2015 17:03:19 -0400 Message-ID: <54FE0A96.30907@linux.vnet.ibm.com> Date: Mon, 09 Mar 2015 17:03:18 -0400 From: Stefan Berger MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] Crash when using -daemonize List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel Since an upgrade to Fedora 21, I get crashes with QEMU when using -daemonize. I noticed this since libvirt could not QMP probe QEMU. This is the command line used: x86_64-softmmu/qemu-system-x86_64 -S -no-user-config -nodefaults -nographic -M none -pidfile /tmp/foo -daemonize Here's the backtrace from the coredump: #0 0x00007fe653d5c8d7 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55 #1 0x00007fe653d5e53a in __GI_abort () at abort.c:89 #2 0x00007fe658c4cb80 in error_exit (err=, msg=msg@entry=0x7fe658f58580 <__func__.6036> "qemu_mutex_unlock") at util/qemu-thread-posix.c:48 #3 0x00007fe658edcab0 in qemu_mutex_unlock ( mutex=mutex@entry=0x7fe6593a01c0 ) at util/qemu-thread-posix.c:93 #4 0x00007fe658c7a96c in qemu_mutex_unlock_iothread () at /root/qemu/qemu-git.pt/cpus.c:1137 #5 0x00007fe658e7695f in os_host_main_loop_wait (timeout=-1) at main-loop.c:234 #6 main_loop_wait (nonblocking=) at main-loop.c:494 #7 0x00007fe658c4e82e in main_loop () at vl.c:1795 #8 main (argc=, argv=, envp=) at vl.c:4354 I am using today's tip of the QEMU git tree, but I don't think that's the actual problem. Anyone have an idea? I reinstalled glibc, but that doesn't seem to solve what looks like a mutex problem. Stefan