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=<optimized out>) 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=<optimized out>) 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
