bcachefs: Fix debug assert

Reported-by: syzbot+a8074a75b8d73328751e@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

diff --git a/fs/bcachefs/super.c b/fs/bcachefs/super.c
index 2206a8dee693ab1ce183ec621860c72fcf5bb7e9..df2bea38e83f0ff8996b4df57fec86374dfdf34c 100644 (file)
--- a/fs/bcachefs/super.c
+++ b/fs/bcachefs/super.c
@@ -564,7 +564,7 @@ static void __bch2_fs_free(struct bch_fs *c)
        BUG_ON(atomic_read(&c->journal_keys.ref));
        bch2_fs_btree_write_buffer_exit(c);
        percpu_free_rwsem(&c->mark_lock);
-       EBUG_ON(percpu_u64_get(c->online_reserved));
+       EBUG_ON(c->online_reserved && percpu_u64_get(c->online_reserved));
        free_percpu(c->online_reserved);
 
        darray_exit(&c->btree_roots_extra);