diff options
Diffstat (limited to 'net/ceph')
| -rw-r--r-- | net/ceph/crush/mapper.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/net/ceph/crush/mapper.c b/net/ceph/crush/mapper.c index 5b47736d27d9..7568cb59b9e5 100644 --- a/net/ceph/crush/mapper.c +++ b/net/ceph/crush/mapper.c @@ -790,8 +790,15 @@ int crush_do_rule(const struct crush_map *map, switch (curstep->op) { case CRUSH_RULE_TAKE: - w[0] = curstep->arg1; - wsize = 1; + if ((curstep->arg1 >= 0 && + curstep->arg1 < map->max_devices) || + (-1-curstep->arg1 < map->max_buckets && + map->buckets[-1-curstep->arg1])) { + w[0] = curstep->arg1; + wsize = 1; + } else { + dprintk(" bad take value %d\n", curstep->arg1); + } break; case CRUSH_RULE_SET_CHOOSE_TRIES: |