| From | Sasha Levin <> | Subject | [PATCH AUTOSEL 5.10 45/85] virtiofs: fix userns | Date | Wed, 5 May 2021 12:36:08 -0400 |
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From: Miklos Szeredi <mszeredi@redhat.com>
[ Upstream commit 0a7419c68a45d2d066b996be5087aa2d07ce80eb ]
get_user_ns() is done twice (once in virtio_fs_get_tree() and once in fuse_conn_init()), resulting in a reference leak.
Also looks better to use fsc->user_ns (which *should* be the current_user_ns() at this point).
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- fs/fuse/virtio_fs.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c index 3d83c9e12848..9c0211a629d6 100644 --- a/fs/fuse/virtio_fs.c +++ b/fs/fuse/virtio_fs.c @@ -1456,8 +1456,7 @@ static int virtio_fs_get_tree(struct fs_context *fsc) return -ENOMEM; } - fuse_conn_init(fc, fm, get_user_ns(current_user_ns()), - &virtio_fs_fiq_ops, fs); + fuse_conn_init(fc, fm, fsc->user_ns, &virtio_fs_fiq_ops, fs); fc->release = fuse_free_conn; fc->delete_stale = true; fc->auto_submounts = true; -- 2.30.2
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