[Qemu-devel] [PATCH] nbd: avoid unaligned uint64_t store

[John Snow <jsnow@redhat.com>]

cpu_to_be64w can't be used to make unaligned stores, but stq_be_p can.
The other stores in this routine are left alone, they're aligned already.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 nbd/server.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nbd/server.c b/nbd/server.c
index 1ec79cf..5b65059 100644
--- a/nbd/server.c
+++ b/nbd/server.c
@@ -441,7 +441,7 @@ static coroutine_fn int nbd_negotiate(NBDClientNewData *data)
         }
 
         assert ((client->exp->nbdflags & ~65535) == 0);
-        cpu_to_be64w((uint64_t*)(buf + 18), client->exp->size);
+        stq_be_p((uint64_t *)(buf + 18), client->exp->size);
         cpu_to_be16w((uint16_t*)(buf + 26), client->exp->nbdflags | myflags);
         if (nbd_negotiate_write(csock, buf + 18,
                                 sizeof(buf) - 18) != sizeof(buf) - 18) {
-- 
2.4.3