pespin submitted this change.

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Approvals: osmith: Looks good to me, but someone else must approve fixeria: Looks good to me, approved Jenkins Builder: Verified
abis: Fix reusing link->conn while it is being destroyed

Call to osmo_stream_cli_destroy() may end up triggering disconnect_cb(),
and we don't want to attempt doing more stuff with that conn when that
happens (we were even trying to reconnect() it...).
Avoid it by marking the pointer as NULL immediatelly before calling
e1inp_sign_link_destroy().

Change-Id: I56605766af974d86610d0958f4b82e6e4ff94502
---
M src/cbsp_link.c
1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/cbsp_link.c b/src/cbsp_link.c
index 07fbadd..6b355df 100644
--- a/src/cbsp_link.c
+++ b/src/cbsp_link.c
@@ -102,6 +102,8 @@
static int cbc_cbsp_link_cli_disconnect_cb(struct osmo_stream_cli *conn)
{
struct cbc_cbsp_link *link = osmo_stream_cli_get_data(conn);
+ if (!link->conn) /* conn is being destroyed by us, we called osmo_stream_cli_destroy() */
+ return 0;
LOGPCC(link, LOGL_NOTICE, "Disconnected.\n");
LOGPCC(link, LOGL_NOTICE, "Reconnecting...\n");
osmo_stream_cli_reconnect(conn);
@@ -364,10 +366,11 @@
return;

if (link->is_client) {
- osmo_stream_cli_destroy(link->cli_conn);
+ struct osmo_stream_cli *cli_conn = link->cli_conn;
+ link->cli_conn = NULL;
+ osmo_stream_cli_destroy(cli_conn);
if (link->peer)
link->peer->link.cbsp = NULL;
- link->cli_conn = NULL;
if (link->fi)
osmo_fsm_inst_dispatch(link->fi, CBSP_LINK_E_CMD_CLOSE, NULL);
} else {

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Gerrit-MessageType: merged
Gerrit-Project: osmo-cbc
Gerrit-Branch: master
Gerrit-Change-Id: I56605766af974d86610d0958f4b82e6e4ff94502
Gerrit-Change-Number: 38978
Gerrit-PatchSet: 1
Gerrit-Owner: pespin <pespin@sysmocom.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: daniel <dwillmann@sysmocom.de>
Gerrit-Reviewer: fixeria <vyanitskiy@sysmocom.de>
Gerrit-Reviewer: laforge <laforge@osmocom.org>
Gerrit-Reviewer: osmith <osmith@sysmocom.de>
Gerrit-Reviewer: pespin <pespin@sysmocom.de>