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virtiofs: fix userns

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[ 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>
This commit is contained in:
Miklos Szeredi 2021-04-14 10:40:58 +02:00 committed by Greg Kroah-Hartman
parent 87fe0ca09b
commit 2c20c7d96e
1 changed files with 1 additions and 2 deletions
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3
fs/fuse/virtio_fs.c
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@ -1457,8 +1457,7 @@ 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;