From 00d96a4612f81e82c181fe821d527e98abcbac07 Mon Sep 17 00:00:00 2001 From: Eric Blake Date: Tue, 27 Mar 2018 16:05:17 -0500 Subject: [PATCH] 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 Signed-off-by: Eric Blake Message-Id: <20180327210517.1804242-1-eblake@redhat.com> Reviewed-by: Paolo Bonzini Reviewed-by: Vladimir Sementsov-Ogievskiy --- block/nbd-client.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/nbd-client.c b/block/nbd-client.c index e64e346d69..e7caf49fbb 100644 --- a/block/nbd-client.c +++ b/block/nbd-client.c @@ -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; -- GitLab