Store the timer type for logging, because the timer can be freed

during processing the timerout.

MFC after:	3 days

1 files changed, 9 insertions, 8 deletions

diff --git a/sys/netinet/sctputil.c b/sys/netinet/sctputil.c
index f2e9457..4cf134b 100644
--- a/sys/netinet/sctputil.c
+++ b/sys/netinet/sctputil.c
@@ -1495,6 +1495,7 @@ sctp_timeout_handler(void *t)
 
 #endif
 	int did_output;
+	int type;
 
 	tmr = (struct sctp_timer *)t;
 	inp = (struct sctp_inpcb *)tmr->ep;
@@ -1563,8 +1564,9 @@ sctp_timeout_handler(void *t)
 			return;
 		}
 	}
+	type = tmr->type;
 	tmr->stopped_from = 0xa005;
-	SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", tmr->type);
+	SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", type);
 	if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
 		if (inp) {
 			SCTP_INP_DECR_REF(inp);
@@ -1580,7 +1582,7 @@ sctp_timeout_handler(void *t)
 	if (stcb) {
 		SCTP_TCB_LOCK(stcb);
 		atomic_add_int(&stcb->asoc.refcnt, -1);
-		if ((tmr->type != SCTP_TIMER_TYPE_ASOCKILL) &&
+		if ((type != SCTP_TIMER_TYPE_ASOCKILL) &&
 		    ((stcb->asoc.state == 0) ||
 		    (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
 			SCTP_TCB_UNLOCK(stcb);
@@ -1592,7 +1594,7 @@ sctp_timeout_handler(void *t)
 		}
 	}
 	/* record in stopped what t-o occured */
-	tmr->stopped_from = tmr->type;
+	tmr->stopped_from = type;
 
 	/* mark as being serviced now */
 	if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
@@ -1610,7 +1612,7 @@ sctp_timeout_handler(void *t)
 	SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
 
 	/* call the handler for the appropriate timer type */
-	switch (tmr->type) {
+	switch (type) {
 	case SCTP_TIMER_TYPE_ZERO_COPY:
 		if (inp == NULL) {
 			break;
@@ -1894,11 +1896,11 @@ sctp_timeout_handler(void *t)
 		goto out_no_decr;
 	default:
 		SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n",
-		    tmr->type);
+		    type);
 		break;
 	}
 #ifdef SCTP_AUDITING_ENABLED
-	sctp_audit_log(0xF1, (uint8_t) tmr->type);
+	sctp_audit_log(0xF1, (uint8_t) type);
 	if (inp)
 		sctp_auditing(5, inp, stcb, net);
 #endif
@@ -1921,8 +1923,7 @@ out_decr:
 		SCTP_INP_DECR_REF(inp);
 	}
 out_no_decr:
-	SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type %d)\n",
-	    tmr->type);
+	SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type = %d)\n", type);
 	CURVNET_RESTORE();
 }