Author: tuexen
Date: Sun Jan 12 15:45:27 2020
New Revision: 356660
URL: https://svnweb.freebsd.org/changeset/base/356660
Log:
Fix division by zero issue.
Thanks to Stas Denisov for reporting the issue for the userland stack
and providing a fix.
MFC after: 3 days
Modified:
head/sys/netinet/sctp_cc_functions.c
Modified: head/sys/netinet/sctp_cc_functions.c
==============================================================================
--- head/sys/netinet/sctp_cc_functions.c Sun Jan 12 14:25:44 2020
(r356659)
+++ head/sys/netinet/sctp_cc_functions.c Sun Jan 12 15:45:27 2020
(r356660)
@@ -1876,7 +1876,7 @@ htcp_cong_time(struct htcp *ca)
static inline uint32_t
htcp_ccount(struct htcp *ca)
{
- return (htcp_cong_time(ca) / ca->minRTT);
+ return (ca->minRTT == 0 ? htcp_cong_time(ca) : htcp_cong_time(ca) /
ca->minRTT);
}
static inline void
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