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-rw-r--r--net/sctp/sm_sideeffect.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index 3c22c41..7fe56d0 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -215,10 +215,14 @@ static int sctp_gen_sack(struct sctp_association *asoc, int force,
sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_RESTART,
SCTP_TO(SCTP_EVENT_TIMEOUT_SACK));
} else {
+ __u32 old_a_rwnd = asoc->a_rwnd;
+
asoc->a_rwnd = asoc->rwnd;
sack = sctp_make_sack(asoc);
- if (!sack)
+ if (!sack) {
+ asoc->a_rwnd = old_a_rwnd;
goto nomem;
+ }
asoc->peer.sack_needed = 0;
asoc->peer.sack_cnt = 0;