From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45136) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X1yK3-0002DW-HD for qemu-devel@nongnu.org; Tue, 01 Jul 2014 09:42:21 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1X1yJu-00021l-1N for qemu-devel@nongnu.org; Tue, 01 Jul 2014 09:42:11 -0400 Received: from e06smtp16.uk.ibm.com ([195.75.94.112]:48670) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X1yJt-00021H-OI for qemu-devel@nongnu.org; Tue, 01 Jul 2014 09:42:01 -0400 Received: from /spool/local by e06smtp16.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 1 Jul 2014 14:41:59 +0100 Received: from b06cxnps3074.portsmouth.uk.ibm.com (d06relay09.portsmouth.uk.ibm.com [9.149.109.194]) by d06dlp01.portsmouth.uk.ibm.com (Postfix) with ESMTP id 4489017D8047 for ; Tue, 1 Jul 2014 14:43:27 +0100 (BST) Received: from d06av11.portsmouth.uk.ibm.com (d06av11.portsmouth.uk.ibm.com [9.149.37.252]) by b06cxnps3074.portsmouth.uk.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id s61DfuRD35520628 for ; Tue, 1 Jul 2014 13:41:56 GMT Received: from d06av11.portsmouth.uk.ibm.com (localhost [127.0.0.1]) by d06av11.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id s61DfurG015190 for ; Tue, 1 Jul 2014 07:41:56 -0600 Message-ID: <53B2BAA4.6000500@de.ibm.com> Date: Tue, 01 Jul 2014 15:41:56 +0200 From: Christian Borntraeger MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] segfault with qemu master and dataplane List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Stefan Hajnoczi Cc: "qemu-devel@nongnu.org" Stefan, with current qemu master (without your latest patch request, but it does not make a difference) I get: ... Program terminated with signal 11, Segmentation fault. #0 0x000000008006b01e in virtio_blk_rw_complete (opaque=0x80a68980, ret=) at /home/cborntra/REPOS/qemu/hw/block/virtio-blk.c:99 99 bdrv_acct_done(req->dev->bs, &req->acct); (gdb) bt -a #0 0x000000008006b01e in virtio_blk_rw_complete (opaque=0x80a68980, ret=) at /home/cborntra/REPOS/qemu/hw/block/virtio-blk.c:99 #1 0x000000008019e614 in bdrv_co_em_bh (opaque=0x80a692c0) at /home/cborntra/REPOS/qemu/block.c:4675 #2 0x0000000080195e50 in aio_bh_poll (ctx=ctx@entry=0x809a9c10) at /home/cborntra/REPOS/qemu/async.c:81 #3 0x00000000801a835e in aio_poll (ctx=0x809a9c10, blocking=blocking@entry=true) at /home/cborntra/REPOS/qemu/aio-posix.c:188 #4 0x00000000800b6e20 in iothread_run (opaque=0x809a9ab8) at /home/cborntra/REPOS/qemu/iothread.c:41 #5 0x000003fffd35a412 in start_thread () from /lib64/libpthread.so.0 #6 0x000003fffbfe00ae in thread_start () from /lib64/libc.so.6 (gdb) print req->dev $1 = (VirtIOBlock *) 0x0 any idea? Christian