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authorMohammed Rafi KC <rkavunga@redhat.com>2019-02-26 18:04:18 +0530
committerAmar Tumballi <amarts@redhat.com>2019-03-20 13:24:44 +0000
commitf2f07591b2de9ba45bbc3eb4f601d1e9a327190b (patch)
tree1eb628f99b91246759e3bc1e9de1238c9fea2cc4 /rpc
parent6d6a3b298ee81c6c7d93941365852c1bdb42c3c1 (diff)
rpc/transport: Missing a ref on dict while creating transport object
while creating rpc_tranpsort object, we store a dictionary without taking a ref on dict but it does an unref during the cleaning of the transport object. So the rpc layer expect the caller to take a ref on the dictionary before passing dict to rpc layer. This leads to a lot of confusion across the code base and leads to ref leaks. Semantically, this is not correct. It is the rpc layer responsibility to take a ref when storing it, and free during the cleanup. I'm listing down the total issues or leaks across the code base because of this confusion. These issues are currently present in the upstream master. 1) changelog_rpc_client_init 2) quota_enforcer_init 3) rpcsvc_create_listeners : when there are two transport, like tcp,rdma. 4) quotad_aggregator_init 5) glusterd: init 6) nfs3_init_state 7) server: init 8) client:init This patch does the cleanup according to the semantics. Change-Id: I46373af9630373eb375ee6de0e6f2bbe2a677425 updates: bz#1659708 Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com>
Diffstat (limited to 'rpc')
-rw-r--r--rpc/rpc-lib/src/rpc-clnt.c2
-rw-r--r--rpc/rpc-lib/src/rpc-transport.c38
-rw-r--r--rpc/rpc-lib/src/rpc-transport.h4
-rw-r--r--rpc/rpc-lib/src/rpcsvc.c13
-rw-r--r--rpc/rpc-lib/src/rpcsvc.h2
5 files changed, 16 insertions, 43 deletions
diff --git a/rpc/rpc-lib/src/rpc-clnt.c b/rpc/rpc-lib/src/rpc-clnt.c
index 6f47515..b04eaed 100644
--- a/rpc/rpc-lib/src/rpc-clnt.c
+++ b/rpc/rpc-lib/src/rpc-clnt.c
@@ -1125,8 +1125,6 @@ rpc_clnt_new(dict_t *options, xlator_t *owner, char *name,
mem_pool_destroy(rpc->saved_frames_pool);
GF_FREE(rpc);
rpc = NULL;
- if (options)
- dict_unref(options);
goto out;
}
diff --git a/rpc/rpc-lib/src/rpc-transport.c b/rpc/rpc-lib/src/rpc-transport.c
index ce98442..baa8593 100644
--- a/rpc/rpc-lib/src/rpc-transport.c
+++ b/rpc/rpc-lib/src/rpc-transport.c
@@ -170,6 +170,11 @@ rpc_transport_cleanup(rpc_transport_t *trans)
if (trans->fini)
trans->fini(trans);
+ if (trans->options) {
+ dict_unref(trans->options);
+ trans->options = NULL;
+ }
+
GF_FREE(trans->name);
if (trans->xl)
@@ -354,7 +359,7 @@ rpc_transport_load(glusterfs_ctx_t *ctx, dict_t *options, char *trans_name)
}
}
- trans->options = options;
+ trans->options = dict_ref(options);
pthread_mutex_init(&trans->lock, NULL);
trans->xl = this;
@@ -593,19 +598,14 @@ out:
}
int
-rpc_transport_unix_options_build(dict_t **options, char *filepath,
+rpc_transport_unix_options_build(dict_t *dict, char *filepath,
int frame_timeout)
{
- dict_t *dict = NULL;
char *fpath = NULL;
int ret = -1;
GF_ASSERT(filepath);
- GF_ASSERT(options);
-
- dict = dict_new();
- if (!dict)
- goto out;
+ GF_VALIDATE_OR_GOTO("rpc-transport", dict, out);
fpath = gf_strdup(filepath);
if (!fpath) {
@@ -640,20 +640,14 @@ rpc_transport_unix_options_build(dict_t **options, char *filepath,
if (ret)
goto out;
}
-
- *options = dict;
out:
- if (ret && dict) {
- dict_unref(dict);
- }
return ret;
}
int
-rpc_transport_inet_options_build(dict_t **options, const char *hostname,
- int port, char *af)
+rpc_transport_inet_options_build(dict_t *dict, const char *hostname, int port,
+ char *af)
{
- dict_t *dict = NULL;
char *host = NULL;
int ret = -1;
#ifdef IPV6_DEFAULT
@@ -662,13 +656,9 @@ rpc_transport_inet_options_build(dict_t **options, const char *hostname,
char *addr_family = "inet";
#endif
- GF_ASSERT(options);
GF_ASSERT(hostname);
GF_ASSERT(port >= 1024);
-
- dict = dict_new();
- if (!dict)
- goto out;
+ GF_VALIDATE_OR_GOTO("rpc-transport", dict, out);
host = gf_strdup((char *)hostname);
if (!host) {
@@ -704,12 +694,6 @@ rpc_transport_inet_options_build(dict_t **options, const char *hostname,
"failed to set trans-type with socket");
goto out;
}
-
- *options = dict;
out:
- if (ret && dict) {
- dict_unref(dict);
- }
-
return ret;
}
diff --git a/rpc/rpc-lib/src/rpc-transport.h b/rpc/rpc-lib/src/rpc-transport.h
index 6830279..5b88be5 100644
--- a/rpc/rpc-lib/src/rpc-transport.h
+++ b/rpc/rpc-lib/src/rpc-transport.h
@@ -306,11 +306,11 @@ rpc_transport_keepalive_options_set(dict_t *options, int32_t interval,
int32_t time, int32_t timeout);
int
-rpc_transport_unix_options_build(dict_t **options, char *filepath,
+rpc_transport_unix_options_build(dict_t *options, char *filepath,
int frame_timeout);
int
-rpc_transport_inet_options_build(dict_t **options, const char *hostname,
+rpc_transport_inet_options_build(dict_t *options, const char *hostname,
int port, char *af);
void
diff --git a/rpc/rpc-lib/src/rpcsvc.c b/rpc/rpc-lib/src/rpcsvc.c
index c38a675..d62e06c 100644
--- a/rpc/rpc-lib/src/rpcsvc.c
+++ b/rpc/rpc-lib/src/rpcsvc.c
@@ -2620,18 +2620,13 @@ rpcsvc_reconfigure_options(rpcsvc_t *svc, dict_t *options)
}
int
-rpcsvc_transport_unix_options_build(dict_t **options, char *filepath)
+rpcsvc_transport_unix_options_build(dict_t *dict, char *filepath)
{
- dict_t *dict = NULL;
char *fpath = NULL;
int ret = -1;
GF_ASSERT(filepath);
- GF_ASSERT(options);
-
- dict = dict_new();
- if (!dict)
- goto out;
+ GF_VALIDATE_OR_GOTO("rpcsvc", dict, out);
fpath = gf_strdup(filepath);
if (!fpath) {
@@ -2654,13 +2649,9 @@ rpcsvc_transport_unix_options_build(dict_t **options, char *filepath)
ret = dict_set_str(dict, "transport-type", "socket");
if (ret)
goto out;
-
- *options = dict;
out:
if (ret) {
GF_FREE(fpath);
- if (dict)
- dict_unref(dict);
}
return ret;
}
diff --git a/rpc/rpc-lib/src/rpcsvc.h b/rpc/rpc-lib/src/rpcsvc.h
index 34045ce..a51edc7 100644
--- a/rpc/rpc-lib/src/rpcsvc.h
+++ b/rpc/rpc-lib/src/rpcsvc.h
@@ -665,7 +665,7 @@ rpcsvc_actor_t *
rpcsvc_program_actor(rpcsvc_request_t *req);
int
-rpcsvc_transport_unix_options_build(dict_t **options, char *filepath);
+rpcsvc_transport_unix_options_build(dict_t *options, char *filepath);
int
rpcsvc_set_allow_insecure(rpcsvc_t *svc, dict_t *options);
int