From: Peter Lieven <pl@kamp.de>
Date: Wed, 9 Dec 2020 12:17:35 +0000 (+0100)
Subject: block/nfs: fix int overflow in nfs_client_open_qdict
X-Git-Tag: v6.0.0-rc0~170^2~14
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=182454dc63c66ff5a29eddd60cc987b6a1b45e7f;p=thirdparty%2Fqemu.git

block/nfs: fix int overflow in nfs_client_open_qdict

nfs_client_open returns the file size in sectors. This effectively
makes it impossible to open files larger than 1TB.

Fixes: c22a03454544c2a08f1107c5cc8481a5574533d5
Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Lieven <pl@kamp.de>
Message-Id: <20201209121735.16437-1-pl@kamp.de>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---

diff --git a/block/nfs.c b/block/nfs.c
index 77905f516d2..8c1968bb415 100644
--- a/block/nfs.c
+++ b/block/nfs.c
@@ -592,7 +592,7 @@ static int64_t nfs_client_open_qdict(NFSClient *client, QDict *options,
                                      int flags, int open_flags, Error **errp)
 {
     BlockdevOptionsNfs *opts;
-    int ret;
+    int64_t ret;
 
     opts = nfs_options_qdict_to_qapi(options, errp);
     if (opts == NULL) {