diff options
| author | Alberto Garcia <berto@igalia.com> | 2017-01-31 18:09:54 +0200 |
|---|---|---|
| committer | Max Reitz <mreitz@redhat.com> | 2017-02-12 00:47:43 +0100 |
| commit | 3026c4688ca80d9c5cc1606368c4a1009a6f507d (patch) | |
| tree | 6f932acb0edf131dd41de828940994b6b0a9314e /blockdev.c | |
| parent | 7061a078984ba7d08b8b80686ad98c5162e56fbd (diff) | |
qemu-io: don't allow I/O operations larger than BDRV_REQUEST_MAX_BYTES
Passing a request size larger than BDRV_REQUEST_MAX_BYTES to any of the
I/O commands results in an error. While 'read' and 'write' handle the
error correctly, 'aio_read' and 'aio_write' hit an assertion:
blk_aio_read_entry: Assertion `rwco->qiov->size == acb->bytes' failed.
The reason is that the QEMU I/O code cannot handle request sizes
larger than BDRV_REQUEST_MAX_BYTES, so this patch makes qemu-io check
that all values are within range.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 79f66648c685929a144396bda24d13a207131dcf.1485878688.git.berto@igalia.com
[mreitz: Use BDRV_REQUEST_MAX_BYTES instead of INT_MAX]
Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'blockdev.c')
0 files changed, 0 insertions, 0 deletions