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nbd: fix use of two uninitialized bytes when connecting to a named export

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Reported-by: Michal Privoznik <mprivoznik@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2012-11-26 15:19:31 +01:00
parent c8969eded2
commit 8ffaaba0e9
1 changed files with 1 additions and 1 deletions
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2
nbd.c
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@ -397,6 +397,7 @@ static int nbd_send_negotiate(NBDClient *client)
rc = -EINVAL; rc = -EINVAL;
TRACE("Beginning negotiation."); TRACE("Beginning negotiation.");
memset(buf, 0, sizeof(buf));
memcpy(buf, "NBDMAGIC", 8); memcpy(buf, "NBDMAGIC", 8);
if (client->exp) { if (client->exp) {
assert ((client->exp->nbdflags & ~65535) == 0); assert ((client->exp->nbdflags & ~65535) == 0);
@ -406,7 +407,6 @@ static int nbd_send_negotiate(NBDClient *client)
} else { } else {
cpu_to_be64w((uint64_t*)(buf + 8), NBD_OPTS_MAGIC); cpu_to_be64w((uint64_t*)(buf + 8), NBD_OPTS_MAGIC);
} }
memset(buf + 28, 0, 124);
if (client->exp) { if (client->exp) {
if (write_sync(csock, buf, sizeof(buf)) != sizeof(buf)) { if (write_sync(csock, buf, sizeof(buf)) != sizeof(buf)) {