[ Upstream commit e02a53d92e197706cad1627bd84705d4aa20a145 ]

iattr is passed to v9fs_vfs_setattr_dotl which does send various
values from iattr over the wire, even if it tells the server to
only look at iattr.ia_valid fields this could leak some stack data.

Link: 
http://lkml.kernel.org/r/1536339057-21974-2-git-send-email-asmad...@codewreck.org
Addresses-Coverity-ID: 1195601 ("Uninitalized scalar variable")
Signed-off-by: Dominique Martinet <dominique.marti...@cea.fr>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 fs/9p/acl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/9p/acl.c b/fs/9p/acl.c
index 082d227fa56b..6261719f6f2a 100644
--- a/fs/9p/acl.c
+++ b/fs/9p/acl.c
@@ -276,7 +276,7 @@ static int v9fs_xattr_set_acl(const struct xattr_handler 
*handler,
        switch (handler->flags) {
        case ACL_TYPE_ACCESS:
                if (acl) {
-                       struct iattr iattr;
+                       struct iattr iattr = { 0 };
                        struct posix_acl *old_acl = acl;
 
                        retval = posix_acl_update_mode(inode, &iattr.ia_mode, 
&acl);
-- 
2.20.1



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