On 04/06/2017 03:59 PM, Richard W.M. Jones wrote:
> On Tue, Feb 28, 2017 at 09:36:42PM +0100, Kevin Wolf wrote:
>> This adds assertions that ensure that the necessary write permissions
>> have been granted before someone attempts to write to a node.
>>
>> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
>> Acked-by: Fam Zheng <famz@redhat.com>
>> Reviewed-by: Max Reitz <mreitz@redhat.com>
>> ---
>>  block/io.c | 3 +++
>>  1 file changed, 3 insertions(+)
>>
>> diff --git a/block/io.c b/block/io.c
>> index 2592ca1..4c79745 100644
>> --- a/block/io.c
>> +++ b/block/io.c
>> @@ -945,6 +945,8 @@ static int coroutine_fn bdrv_co_do_copy_on_readv(BdrvChild *child,
>>      size_t skip_bytes;
>>      int ret;
>>  
>> +    assert(child->perm & (BLK_PERM_WRITE_UNCHANGED | BLK_PERM_WRITE));
> 
> 
> This assertion is thrown in the libguestfs test suite.  I filed a bug
> about it against the Fedora package:
> 
> https://lists.gnu.org/archive/html/qemu-block/2017-02/msg01305.html

Wrong URL?

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org