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-rw-r--r--net/ceph/crush/mapper.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ceph/crush/mapper.c b/net/ceph/crush/mapper.c
index 97ecf6f262aa..abb700621e4a 100644
--- a/net/ceph/crush/mapper.c
+++ b/net/ceph/crush/mapper.c
@@ -835,7 +835,8 @@ int crush_do_rule(const struct crush_map *map,
case CRUSH_RULE_TAKE:
if ((curstep->arg1 >= 0 &&
curstep->arg1 < map->max_devices) ||
- (-1-curstep->arg1 < map->max_buckets &&
+ (-1-curstep->arg1 >= 0 &&
+ -1-curstep->arg1 < map->max_buckets &&
map->buckets[-1-curstep->arg1])) {
w[0] = curstep->arg1;
wsize = 1;