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virtiofs: fix userns 

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>
This commit is contained in:
Miklos Szeredi 2021-04-14 10:40:58 +02:00
parent 07595bfa24
commit 0a7419c68a
1 changed files with 1 additions and 2 deletions
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3
fs/fuse/virtio_fs.c
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@ -1443,8 +1443,7 @@ static int virtio_fs_get_tree(struct fs_context *fsc)
if (!fm)
goto out_err;
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;