ubifs: Fix xattr_names length in exit paths

[ Upstream commit 843741c5778398ea67055067f4cc65ae6c80ca0e ]

When the operation fails we also have to undo the changes
we made to ->xattr_names. Otherwise listxattr() will report
wrong lengths.

Cc: stable@vger.kernel.org
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>

diff --git a/fs/ubifs/xattr.c b/fs/ubifs/xattr.c
index fd65b3f1923ccdb609ee29601604624abf32333d..7270162b72e40a2b2680d24900edf3f8e18c567d 100644 (file)
--- a/fs/ubifs/xattr.c
+++ b/fs/ubifs/xattr.c
@@ -173,6 +173,7 @@ out_cancel:
        host_ui->xattr_cnt -= 1;
        host_ui->xattr_size -= CALC_DENT_SIZE(nm->len);
        host_ui->xattr_size -= CALC_XATTR_BYTES(size);
+       host_ui->xattr_names -= nm->len;
        mutex_unlock(&host_ui->ui_mutex);
 out_free:
        make_bad_inode(inode);
@@ -527,6 +528,7 @@ out_cancel:
        host_ui->xattr_cnt += 1;
        host_ui->xattr_size += CALC_DENT_SIZE(nm->len);
        host_ui->xattr_size += CALC_XATTR_BYTES(ui->data_len);
+       host_ui->xattr_names += nm->len;
        mutex_unlock(&host_ui->ui_mutex);
        ubifs_release_budget(c, &req);
        make_bad_inode(inode);