diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2011-02-08 18:12:35 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2011-02-11 14:33:57 +0100 |
| commit | 16e07bc282c3c2d560ae9c4e9db76106975495eb (patch) | |
| tree | 5cf31b4892591d65af1d123d67f97e21500591be | |
| parent | 607a375709625a439c5bbdbfb62f8052276d33ad (diff) | |
| download | qemu-16e07bc282c3c2d560ae9c4e9db76106975495eb.tar.gz | |
qcow2: Fix error handling for immediate backing file read failure
Requests could return success even though they failed when bdrv_aio_readv
returned NULL for a backing file read.
Reported-by: Chunqiang Tang <ctang@us.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 3ab4c7e92d39d40e6dc0bdb1c2320889543691cb)
| -rw-r--r-- | block/qcow2.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/block/qcow2.c b/block/qcow2.c index 28338bf9d0..647c2a4bc4 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -479,8 +479,10 @@ static void qcow2_aio_read_cb(void *opaque, int ret) BLKDBG_EVENT(bs->file, BLKDBG_READ_BACKING_AIO); acb->hd_aiocb = bdrv_aio_readv(bs->backing_hd, acb->sector_num, &acb->hd_qiov, n1, qcow2_aio_read_cb, acb); - if (acb->hd_aiocb == NULL) + if (acb->hd_aiocb == NULL) { + ret = -EIO; goto done; + } } else { ret = qcow2_schedule_bh(qcow2_aio_read_bh, acb); if (ret < 0) |