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From 71cd021b74a7094b5186a42bfe59a35e2fa66018 Mon Sep 17 00:00:00 2001
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From: Mike Christie <michaelc@cs.wisc.edu>
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Date: Wed, 5 Sep 2012 16:18:16 -0500
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Subject: iscsid: fix iscsid segfault during qla4xxx login
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If the kernel sends multiple ISCSI_KEVENT_CONN_LOGIN_STATE
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events for the same login event iscsid will segault.
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When we get a conn error we will set the r_stage to reopen, then when
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session_conn_process_login handles the first login event we set the r_stage
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to R_STAGE_NO_CHANGE. But then it looks like if we get a second login event
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r_stage is no_change and session_conn_process_login will run again and
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call mgmt_ipc_write_rsp on a bad qtask.
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---
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usr/initiator.c | 5 ++++-
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1 file changed, 4 insertions(+), 1 deletion(-)
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diff --git a/usr/initiator.c b/usr/initiator.c
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index 79ca32c..d475358 100644
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--- a/usr/initiator.c
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+++ b/usr/initiator.c
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@@ -993,7 +993,7 @@ static void session_scan_host(struct iscsi_session *session, int hostno,
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exit(0);
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} else if (pid > 0) {
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reap_inc();
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- if (qtask) {
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+ if (qtask && qtask->mgmt_ipc_fd >= 0) {
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close(qtask->mgmt_ipc_fd);
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free(qtask);
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}
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@@ -1618,6 +1618,9 @@ static void session_conn_process_login(void *data)
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if (state == ISCSI_CONN_STATE_FREE)
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goto failed_login;
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+ if (conn->state == ISCSI_CONN_STATE_LOGGED_IN)
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+ return;
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+
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conn->state = ISCSI_CONN_STATE_LOGGED_IN;
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/*
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* ok we were in_login and now we got the notification that we are
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--
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1.7.11.7
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