Am 19.07.2011 09:33, schrieb Frediano Ziglio: > This patch apply to kevin coroutine-block branch and avoid code. It > fix "qcow: Use coroutines" patch. Test case: > > $ ./qemu-img create -f qcow aaa.img 1G > Formatting 'aaa.img', fmt=qcow size=1073741824 encryption=off > $ ./qemu-io aaa.img > qemu-io> read 1024 1024 > Segmentation fault > > Signed-off-by: Frediano Ziglio <fredd...@gmail.com>
Thanks for the report. I'll update the patch, but in a slightly different way that matches the old code better: diff --git a/block/qcow.c b/block/qcow.c index 6f7973c..6447c2a 100644 --- a/block/qcow.c +++ b/block/qcow.c @@ -573,7 +573,6 @@ static int qcow_aio_read_cb(void *opaque) if (acb->nb_sectors == 0) { /* request completed */ - qemu_iovec_from_buffer(acb->qiov, acb->orig_buf, acb->qiov->size); return 0; } @@ -647,6 +646,7 @@ static int qcow_co_readv(BlockDriverState *bs, int64_t sector_num, qemu_co_mutex_unlock(&s->lock); if (acb->qiov->niov > 1) { + qemu_iovec_from_buffer(acb->qiov, acb->orig_buf, acb->qiov->size); qemu_vfree(acb->orig_buf); } qemu_aio_release(acb);