From: Ilya Dryomov <idryomov@gmail.com>
Date: Mon, 24 Jul 2017 15:49:52 +0200
Subject: crush: assume weight_set != null imples weight_set_size > 0
Git-commit: c7ed1a4bf4b446317eefa0f4916d94b1f6d3ada5
Patch-mainline: v4.13-rc4
References: FATE#324714
Reflects ceph.git commit 5e8fa3e06b68fae1582c9230a3a8d1abc6146286.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Acked-by: Luis Henriques <lhenriques@suse.com>
---
net/ceph/crush/mapper.c | 2 +-
net/ceph/osdmap.c | 4 ++++
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/net/ceph/crush/mapper.c b/net/ceph/crush/mapper.c
index 746b145bfd11..417df675c71b 100644
--- a/net/ceph/crush/mapper.c
+++ b/net/ceph/crush/mapper.c
@@ -306,7 +306,7 @@ static __u32 *get_choose_arg_weights(const struct crush_bucket_straw2 *bucket,
const struct crush_choose_arg *arg,
int position)
{
- if (!arg || !arg->weight_set || arg->weight_set_size == 0)
+ if (!arg || !arg->weight_set)
return bucket->item_weights;
if (position >= arg->weight_set_size)
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index eb57a06373ca..2586e5546143 100644
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -295,6 +295,10 @@ static int decode_choose_args(void **p, void *end, struct crush_map *c)
ret = decode_choose_arg(p, end, arg);
if (ret)
goto fail;
+
+ if (arg->ids_size &&
+ arg->ids_size != c->buckets[bucket_index]->size)
+ goto e_inval;
}
insert_choose_arg_map(&c->choose_args, arg_map);