Update Linux to v5.10.157

Sourced from [1]

[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.157.tar.xz

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: I7b30d9e98d8c465d6b44de8e7433b4a40b3289ba
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index 3fd06a2..83a89dc 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -384,6 +384,7 @@
 {
 	struct sctp_outq *q = &asoc->outqueue;
 	struct sctp_chunk *chk, *temp;
+	struct sctp_stream_out *sout;
 
 	q->sched->unsched_all(&asoc->stream);
 
@@ -398,12 +399,14 @@
 		sctp_sched_dequeue_common(q, chk);
 		asoc->sent_cnt_removable--;
 		asoc->abandoned_unsent[SCTP_PR_INDEX(PRIO)]++;
-		if (chk->sinfo.sinfo_stream < asoc->stream.outcnt) {
-			struct sctp_stream_out *streamout =
-				SCTP_SO(&asoc->stream, chk->sinfo.sinfo_stream);
 
-			streamout->ext->abandoned_unsent[SCTP_PR_INDEX(PRIO)]++;
-		}
+		sout = SCTP_SO(&asoc->stream, chk->sinfo.sinfo_stream);
+		sout->ext->abandoned_unsent[SCTP_PR_INDEX(PRIO)]++;
+
+		/* clear out_curr if all frag chunks are pruned */
+		if (asoc->stream.out_curr == sout &&
+		    list_is_last(&chk->frag_list, &chk->msg->chunks))
+			asoc->stream.out_curr = NULL;
 
 		msg_len -= chk->skb->truesize + sizeof(struct sctp_chunk);
 		sctp_chunk_free(chk);