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authorRaghavendra Bhat <raghavendra@redhat.com>2013-01-22 14:09:25 +0530
committerAnand Avati <avati@redhat.com>2013-02-03 14:10:02 -0800
commit212ab59c511e13cc470e623061fcf113456841c8 (patch)
tree4205fea053af93e8f361edb231e46eeb62e7e160 /xlators/protocol
parent4840090c8bf9f08d6da8a4101e2095c6295cf039 (diff)
protocol/server: upon server_connection_put, set xl_private of the transport to
NULL Suppose the get_xlator_by_name returns NULL and the connection is put back then update the xl_private of the transport by setting to NULL. Otherwise server_connection_put would have freed the connection object and xl_private of the transport would still be pointing to the same location which is freed, thus leading to a segfault when the location is accessed. Change-Id: Id47e0edde3073b09765338c730847ba3095df9e2 BUG: 901457 Signed-off-by: Raghavendra Bhat <raghavendra@redhat.com> Reviewed-on: http://review.gluster.org/4411 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
Diffstat (limited to 'xlators/protocol')
-rw-r--r--xlators/protocol/server/src/server-handshake.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/xlators/protocol/server/src/server-handshake.c b/xlators/protocol/server/src/server-handshake.c
index cebc135..330f32b 100644
--- a/xlators/protocol/server/src/server-handshake.c
+++ b/xlators/protocol/server/src/server-handshake.c
@@ -673,8 +673,16 @@ fail:
* list of connections the server is maintaining and might segfault
* during statedump when bound_xl of the connection is accessed.
*/
- if (op_ret && conn && !xl)
- server_connection_put (this, conn, NULL);
+ if (op_ret && conn && !xl) {
+ /* We would have set the xl_private of the transport to the
+ * @conn. But if we have put the connection i.e shutting down
+ * the connection, then we should set xl_private to NULL as it
+ * would be pointing to a freed memory and would segfault when
+ * accessed upon getting DISCONNECT.
+ */
+ if (server_connection_put (this, conn, NULL) == NULL)
+ req->trans->xl_private = NULL;
+ }
server_submit_reply (NULL, req, &rsp, NULL, 0, NULL,
(xdrproc_t)xdr_gf_setvolume_rsp);