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[Qemu-devel] [PATCH] qcow2: Fix error handling for immediate backing fil
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [PATCH] qcow2: Fix error handling for immediate backing file read failure |
Date: |
Tue, 8 Feb 2011 18:15:28 +0100 |
Requests could return success even though they failed when bdrv_aio_readv
returned NULL for a backing file read.
Reported-by: Chunqiang Tang <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
---
block/qcow2.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index 28338bf..647c2a4 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)
--
1.7.2.3
- [Qemu-devel] [PATCH] qcow2: Fix error handling for immediate backing file read failure,
Kevin Wolf <=