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Date:      Sun, 23 Aug 2020 23:19:32 +0000 (UTC)
From:      Michael Tuexen <tuexen@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org
Subject:   svn commit: r364594 - stable/12/sys/netinet
Message-ID:  <202008232319.07NNJWmQ030692@repo.freebsd.org>

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Author: tuexen
Date: Sun Aug 23 23:19:32 2020
New Revision: 364594
URL: https://svnweb.freebsd.org/changeset/base/364594

Log:
  MFC r361243:
  Replace snprintf() by SCTP_SNPRINTF() and let SCTP_SNPRINTF() map
  to snprintf() on FreeBSD. This allows to check for failures of snprintf()
  on platforms other than FreeBSD kernel.

Modified:
  stable/12/sys/netinet/sctp_asconf.c
  stable/12/sys/netinet/sctp_indata.c
  stable/12/sys/netinet/sctp_input.c
  stable/12/sys/netinet/sctp_os_bsd.h
  stable/12/sys/netinet/sctp_output.c
  stable/12/sys/netinet/sctp_pcb.c
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/sys/netinet/sctp_asconf.c
==============================================================================
--- stable/12/sys/netinet/sctp_asconf.c	Sun Aug 23 23:17:51 2020	(r364593)
+++ stable/12/sys/netinet/sctp_asconf.c	Sun Aug 23 23:19:32 2020	(r364594)
@@ -1713,8 +1713,7 @@ sctp_handle_asconf_ack(struct mbuf *m, int offset,
 		char msg[SCTP_DIAG_INFO_LEN];
 
 		SCTPDBG(SCTP_DEBUG_ASCONF1, "handle_asconf_ack: got unexpected next serial number! Aborting asoc!\n");
-		snprintf(msg, sizeof(msg), "Never sent serial number %8.8x",
-		    serial_num);
+		SCTP_SNPRINTF(msg, sizeof(msg), "Never sent serial number %8.8x", serial_num);
 		op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg);
 		sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED);
 		*abort_no_unlock = 1;

Modified: stable/12/sys/netinet/sctp_indata.c
==============================================================================
--- stable/12/sys/netinet/sctp_indata.c	Sun Aug 23 23:17:51 2020	(r364593)
+++ stable/12/sys/netinet/sctp_indata.c	Sun Aug 23 23:19:32 2020	(r364594)
@@ -434,7 +434,7 @@ sctp_abort_in_reasm(struct sctp_tcb *stcb,
 	struct mbuf *oper;
 
 	if (stcb->asoc.idata_supported) {
-		snprintf(msg, sizeof(msg),
+		SCTP_SNPRINTF(msg, sizeof(msg),
 		    "Reass %x,CF:%x,TSN=%8.8x,SID=%4.4x,FSN=%8.8x,MID:%8.8x",
 		    opspot,
 		    control->fsn_included,
@@ -442,7 +442,7 @@ sctp_abort_in_reasm(struct sctp_tcb *stcb,
 		    chk->rec.data.sid,
 		    chk->rec.data.fsn, chk->rec.data.mid);
 	} else {
-		snprintf(msg, sizeof(msg),
+		SCTP_SNPRINTF(msg, sizeof(msg),
 		    "Reass %x,CI:%x,TSN=%8.8x,SID=%4.4x,FSN=%4.4x,SSN:%4.4x",
 		    opspot,
 		    control->fsn_included,
@@ -533,11 +533,11 @@ sctp_queue_data_to_stream(struct sctp_tcb *stcb,
 		 */
 		TAILQ_INSERT_HEAD(&strm->inqueue, control, next_instrm);
 		if (asoc->idata_supported) {
-			snprintf(msg, sizeof(msg), "Delivered MID=%8.8x, got TSN=%8.8x, SID=%4.4x, MID=%8.8x",
+			SCTP_SNPRINTF(msg, sizeof(msg), "Delivered MID=%8.8x, got TSN=%8.8x, SID=%4.4x, MID=%8.8x",
 			    strm->last_mid_delivered, control->sinfo_tsn,
 			    control->sinfo_stream, control->mid);
 		} else {
-			snprintf(msg, sizeof(msg), "Delivered SSN=%4.4x, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x",
+			SCTP_SNPRINTF(msg, sizeof(msg), "Delivered SSN=%4.4x, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x",
 			    (uint16_t)strm->last_mid_delivered,
 			    control->sinfo_tsn,
 			    control->sinfo_stream,
@@ -648,9 +648,8 @@ sctp_queue_data_to_stream(struct sctp_tcb *stcb,
 		 * to put it on the queue.
 		 */
 		if (sctp_place_control_in_stream(strm, asoc, control)) {
-			snprintf(msg, sizeof(msg),
-			    "Queue to str MID: %u duplicate",
-			    control->mid);
+			SCTP_SNPRINTF(msg, sizeof(msg),
+			    "Queue to str MID: %u duplicate", control->mid);
 			sctp_clean_up_control(stcb, control);
 			op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg);
 			stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_3;
@@ -1881,8 +1880,7 @@ sctp_process_a_data_chunk(struct sctp_tcb *stcb, struc
 		 * can *not* be fsn 0. XXX: This can happen in case of a
 		 * wrap around. Ignore is for now.
 		 */
-		snprintf(msg, sizeof(msg), "FSN zero for MID=%8.8x, but flags=%2.2x",
-		    mid, chk_flags);
+		SCTP_SNPRINTF(msg, sizeof(msg), "FSN zero for MID=%8.8x, but flags=%2.2x", mid, chk_flags);
 		goto err_out;
 	}
 	control = sctp_find_reasm_entry(&asoc->strmin[sid], mid, ordered, asoc->idata_supported);
@@ -1893,7 +1891,7 @@ sctp_process_a_data_chunk(struct sctp_tcb *stcb, struc
 		if (control != NULL) {
 			/* We found something, does it belong? */
 			if (ordered && (mid != control->mid)) {
-				snprintf(msg, sizeof(msg), "Reassembly problem (MID=%8.8x)", mid);
+				SCTP_SNPRINTF(msg, sizeof(msg), "Reassembly problem (MID=%8.8x)", mid);
 		err_out:
 				op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg);
 				stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_16;
@@ -1906,7 +1904,8 @@ sctp_process_a_data_chunk(struct sctp_tcb *stcb, struc
 				 * We can't have a switched order with an
 				 * unordered chunk
 				 */
-				snprintf(msg, sizeof(msg), "All fragments of a user message must be ordered or unordered (TSN=%8.8x)",
+				SCTP_SNPRINTF(msg, sizeof(msg),
+				    "All fragments of a user message must be ordered or unordered (TSN=%8.8x)",
 				    tsn);
 				goto err_out;
 			}
@@ -1915,7 +1914,8 @@ sctp_process_a_data_chunk(struct sctp_tcb *stcb, struc
 				 * We can't have a switched unordered with a
 				 * ordered chunk
 				 */
-				snprintf(msg, sizeof(msg), "All fragments of a user message must be ordered or unordered (TSN=%8.8x)",
+				SCTP_SNPRINTF(msg, sizeof(msg),
+				    "All fragments of a user message must be ordered or unordered (TSN=%8.8x)",
 				    tsn);
 				goto err_out;
 			}
@@ -1930,12 +1930,14 @@ sctp_process_a_data_chunk(struct sctp_tcb *stcb, struc
 			if (ordered || asoc->idata_supported) {
 				SCTPDBG(SCTP_DEBUG_XXX, "chunk_flags: 0x%x dup detected on MID: %u\n",
 				    chk_flags, mid);
-				snprintf(msg, sizeof(msg), "Duplicate MID=%8.8x detected.", mid);
+				SCTP_SNPRINTF(msg, sizeof(msg), "Duplicate MID=%8.8x detected.", mid);
 				goto err_out;
 			} else {
 				if ((tsn == control->fsn_included + 1) &&
 				    (control->end_added == 0)) {
-					snprintf(msg, sizeof(msg), "Illegal message sequence, missing end for MID: %8.8x", control->fsn_included);
+					SCTP_SNPRINTF(msg, sizeof(msg),
+					    "Illegal message sequence, missing end for MID: %8.8x",
+					    control->fsn_included);
 					goto err_out;
 				} else {
 					control = NULL;
@@ -2032,13 +2034,13 @@ sctp_process_a_data_chunk(struct sctp_tcb *stcb, struc
 		    mid, asoc->strmin[sid].last_mid_delivered);
 
 		if (asoc->idata_supported) {
-			snprintf(msg, sizeof(msg), "Delivered MID=%8.8x, got TSN=%8.8x, SID=%4.4x, MID=%8.8x",
+			SCTP_SNPRINTF(msg, sizeof(msg), "Delivered MID=%8.8x, got TSN=%8.8x, SID=%4.4x, MID=%8.8x",
 			    asoc->strmin[sid].last_mid_delivered,
 			    tsn,
 			    sid,
 			    mid);
 		} else {
-			snprintf(msg, sizeof(msg), "Delivered SSN=%4.4x, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x",
+			SCTP_SNPRINTF(msg, sizeof(msg), "Delivered SSN=%4.4x, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x",
 			    (uint16_t)asoc->strmin[sid].last_mid_delivered,
 			    tsn,
 			    sid,
@@ -2769,7 +2771,7 @@ sctp_process_data(struct mbuf **mm, int iphlen, int *o
 			struct mbuf *op_err;
 			char msg[SCTP_DIAG_INFO_LEN];
 
-			snprintf(msg, sizeof(msg), "%s", "I-DATA chunk received when DATA was negotiated");
+			SCTP_SNPRINTF(msg, sizeof(msg), "%s", "I-DATA chunk received when DATA was negotiated");
 			op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg);
 			stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_20;
 			sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED);
@@ -2780,7 +2782,7 @@ sctp_process_data(struct mbuf **mm, int iphlen, int *o
 			struct mbuf *op_err;
 			char msg[SCTP_DIAG_INFO_LEN];
 
-			snprintf(msg, sizeof(msg), "%s", "DATA chunk received when I-DATA was negotiated");
+			SCTP_SNPRINTF(msg, sizeof(msg), "%s", "DATA chunk received when I-DATA was negotiated");
 			op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg);
 			stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_21;
 			sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED);
@@ -2803,7 +2805,7 @@ sctp_process_data(struct mbuf **mm, int iphlen, int *o
 				struct mbuf *op_err;
 				char msg[SCTP_DIAG_INFO_LEN];
 
-				snprintf(msg, sizeof(msg), "%s chunk of length %u",
+				SCTP_SNPRINTF(msg, sizeof(msg), "%s chunk of length %u",
 				    ch->chunk_type == SCTP_DATA ? "DATA" : "I-DATA",
 				    chk_length);
 				op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg);
@@ -2874,7 +2876,7 @@ sctp_process_data(struct mbuf **mm, int iphlen, int *o
 					struct mbuf *op_err;
 					char msg[SCTP_DIAG_INFO_LEN];
 
-					snprintf(msg, sizeof(msg), "DATA chunk followed by chunk of type %2.2x",
+					SCTP_SNPRINTF(msg, sizeof(msg), "DATA chunk followed by chunk of type %2.2x",
 					    ch->chunk_type);
 					op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg);
 					sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED);
@@ -2893,8 +2895,7 @@ sctp_process_data(struct mbuf **mm, int iphlen, int *o
 					struct mbuf *op_err;
 					char msg[SCTP_DIAG_INFO_LEN];
 
-					snprintf(msg, sizeof(msg), "Chunk of length %u",
-					    chk_length);
+					SCTP_SNPRINTF(msg, sizeof(msg), "Chunk of length %u", chk_length);
 					op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg);
 					stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_23;
 					sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED);
@@ -4043,7 +4044,8 @@ sctp_express_handle_sack(struct sctp_tcb *stcb, uint32
 
 		*abort_now = 1;
 		/* XXX */
-		snprintf(msg, sizeof(msg), "Cum ack %8.8x greater or equal than TSN %8.8x",
+		SCTP_SNPRINTF(msg, sizeof(msg),
+		    "Cum ack %8.8x greater or equal than TSN %8.8x",
 		    cumack, send_s);
 		op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg);
 		stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_24;
@@ -4585,7 +4587,8 @@ sctp_handle_sack(struct mbuf *m, int offset_seg, int o
 hopeless_peer:
 		*abort_now = 1;
 		/* XXX */
-		snprintf(msg, sizeof(msg), "Cum ack %8.8x greater or equal than TSN %8.8x",
+		SCTP_SNPRINTF(msg, sizeof(msg),
+		    "Cum ack %8.8x greater or equal than TSN %8.8x",
 		    cum_ack, send_s);
 		op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg);
 		stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_28;
@@ -5629,7 +5632,7 @@ sctp_handle_forward_tsn(struct sctp_tcb *stcb,
 			 * give out). This must be an attacker.
 			 */
 			*abort_flag = 1;
-			snprintf(msg, sizeof(msg),
+			SCTP_SNPRINTF(msg, sizeof(msg),
 			    "New cum ack %8.8x too high, highest TSN %8.8x",
 			    new_cum_tsn, asoc->highest_tsn_inside_map);
 			op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg);

Modified: stable/12/sys/netinet/sctp_input.c
==============================================================================
--- stable/12/sys/netinet/sctp_input.c	Sun Aug 23 23:17:51 2020	(r364593)
+++ stable/12/sys/netinet/sctp_input.c	Sun Aug 23 23:19:32 2020	(r364594)
@@ -4692,7 +4692,7 @@ sctp_process_control(struct mbuf *m, int iphlen, int *
 			}
 		}
 		if (stcb == NULL) {
-			snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__);
+			SCTP_SNPRINTF(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__);
 			op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
 			    msg);
 			/* no association, so it's out of the blue... */
@@ -4734,7 +4734,7 @@ sctp_process_control(struct mbuf *m, int iphlen, int *
 				if (stcb != NULL) {
 					SCTP_TCB_UNLOCK(stcb);
 				}
-				snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__);
+				SCTP_SNPRINTF(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__);
 				op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
 				    msg);
 				sctp_handle_ootb(m, iphlen, *offset, src, dst,
@@ -5671,7 +5671,7 @@ sctp_common_input_processing(struct mbuf **mm, int iph
 			SCTP_TCB_UNLOCK(stcb);
 			stcb = NULL;
 			SCTP_PROBE5(receive, NULL, stcb, m, stcb, sh);
-			snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__);
+			SCTP_SNPRINTF(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__);
 			op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
 			    msg);
 			sctp_handle_ootb(m, iphlen, offset, src, dst, sh, inp, op_err,
@@ -5733,7 +5733,7 @@ sctp_common_input_processing(struct mbuf **mm, int iph
 		if (stcb == NULL) {
 			/* out of the blue DATA chunk */
 			SCTP_PROBE5(receive, NULL, NULL, m, NULL, sh);
-			snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__);
+			SCTP_SNPRINTF(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__);
 			op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
 			    msg);
 			sctp_handle_ootb(m, iphlen, offset, src, dst, sh, inp, op_err,
@@ -5799,7 +5799,7 @@ sctp_common_input_processing(struct mbuf **mm, int iph
 			/*
 			 * We consider OOTB any data sent during asoc setup.
 			 */
-			snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__);
+			SCTP_SNPRINTF(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__);
 			op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
 			    msg);
 			sctp_handle_ootb(m, iphlen, offset, src, dst, sh, inp, op_err,

Modified: stable/12/sys/netinet/sctp_os_bsd.h
==============================================================================
--- stable/12/sys/netinet/sctp_os_bsd.h	Sun Aug 23 23:17:51 2020	(r364593)
+++ stable/12/sys/netinet/sctp_os_bsd.h	Sun Aug 23 23:19:32 2020	(r364594)
@@ -294,6 +294,8 @@ typedef struct callout sctp_os_timer_t;
 
 #define SCTP_ALIGN_TO_END(m, len) M_ALIGN(m, len)
 
+#define SCTP_SNPRINTF(...) snprintf(__VA_ARGS__)
+
 /* We make it so if you have up to 4 threads
  * writing based on the default size of
  * the packet log 65 k, that would be

Modified: stable/12/sys/netinet/sctp_output.c
==============================================================================
--- stable/12/sys/netinet/sctp_output.c	Sun Aug 23 23:17:51 2020	(r364593)
+++ stable/12/sys/netinet/sctp_output.c	Sun Aug 23 23:19:32 2020	(r364594)
@@ -5587,7 +5587,7 @@ do_a_abort:
 		if (op_err == NULL) {
 			char msg[SCTP_DIAG_INFO_LEN];
 
-			snprintf(msg, sizeof(msg), "%s:%d at %s", __FILE__, __LINE__, __func__);
+			SCTP_SNPRINTF(msg, sizeof(msg), "%s:%d at %s", __FILE__, __LINE__, __func__);
 			op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
 			    msg);
 		}
@@ -6764,7 +6764,7 @@ sctp_sendall_iterator(struct sctp_inpcb *inp, struct s
 						char msg[SCTP_DIAG_INFO_LEN];
 
 				abort_anyway:
-						snprintf(msg, sizeof(msg),
+						SCTP_SNPRINTF(msg, sizeof(msg),
 						    "%s:%d at %s", __FILE__, __LINE__, __func__);
 						op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
 						    msg);
@@ -9632,7 +9632,7 @@ sctp_chunk_retransmission(struct sctp_inpcb *inp,
 			struct mbuf *op_err;
 			char msg[SCTP_DIAG_INFO_LEN];
 
-			snprintf(msg, sizeof(msg), "TSN %8.8x retransmitted %d times, giving up",
+			SCTP_SNPRINTF(msg, sizeof(msg), "TSN %8.8x retransmitted %d times, giving up",
 			    chk->rec.data.tsn, chk->snd_count);
 			op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
 			    msg);
@@ -13609,7 +13609,7 @@ dataless_eof:
 						atomic_add_int(&stcb->asoc.refcnt, -1);
 						free_cnt_applied = 0;
 					}
-					snprintf(msg, sizeof(msg),
+					SCTP_SNPRINTF(msg, sizeof(msg),
 					    "%s:%d at %s", __FILE__, __LINE__, __func__);
 					op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
 					    msg);

Modified: stable/12/sys/netinet/sctp_pcb.c
==============================================================================
--- stable/12/sys/netinet/sctp_pcb.c	Sun Aug 23 23:17:51 2020	(r364593)
+++ stable/12/sys/netinet/sctp_pcb.c	Sun Aug 23 23:19:32 2020	(r364594)
@@ -541,9 +541,9 @@ sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint3
 		atomic_add_int(&vrf->refcount, 1);
 		sctp_ifnp->ifn_mtu = SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, addr->sa_family);
 		if (if_name != NULL) {
-			snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", if_name);
+			SCTP_SNPRINTF(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", if_name);
 		} else {
-			snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", "unknown");
+			SCTP_SNPRINTF(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", "unknown");
 		}
 		hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
 		LIST_INIT(&sctp_ifnp->ifalist);
@@ -6229,7 +6229,7 @@ sctp_load_addresses_from_init(struct sctp_tcb *stcb, s
 							 * in setup state we
 							 * abort this guy
 							 */
-							snprintf(msg, sizeof(msg),
+							SCTP_SNPRINTF(msg, sizeof(msg),
 							    "%s:%d at %s", __FILE__, __LINE__, __func__);
 							op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
 							    msg);
@@ -6329,7 +6329,7 @@ sctp_load_addresses_from_init(struct sctp_tcb *stcb, s
 							 * in setup state we
 							 * abort this guy
 							 */
-							snprintf(msg, sizeof(msg),
+							SCTP_SNPRINTF(msg, sizeof(msg),
 							    "%s:%d at %s", __FILE__, __LINE__, __func__);
 							op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
 							    msg);



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