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nbd: Fix 32-bit compilation on BLOCK_STATUS 

iotests 123 and 209 fail on 32-bit platforms.  The culprit:
sizeof(extent) is wrong; we want sizeof(*extent).  But since
the struct is 8 bytes, it happened to work on 64-bit platforms
where the pointer is also 8 bytes (nasty).

Fixes: 78a33ab58
Reported-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180327210517.1804242-1-eblake@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
This commit is contained in:
Eric Blake 2018-03-27 16:05:17 -05:00
parent f184de7553
commit 00d96a4612
1 changed files with 1 additions and 1 deletions
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2
block/nbd-client.c
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@ -239,7 +239,7 @@ static int nbd_parse_blockstatus_payload(NBDClientSession *client,
{
uint32_t context_id;
if (chunk->length != sizeof(context_id) + sizeof(extent)) {
if (chunk->length != sizeof(context_id) + sizeof(*extent)) {
error_setg(errp, "Protocol error: invalid payload for "
"NBD_REPLY_TYPE_BLOCK_STATUS");
return -EINVAL;