Date: Thu, 28 Jan 2021 16:30:38 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 252913] [tcp] Using RACK leaks mbufs Message-ID: <bug-252913-7501-7V4pJvccVd@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-252913-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-252913-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=252913 --- Comment #17 from iron.udjin@gmail.com --- Today I discovered another issue. Some of TCP sessions looping in TCP Retransmission state. Here is what I captured by tcpdump and dumped by tshark: 31880 32.587768 XXX.XXX.XXX.XXX → YYY.YYY.YYY.YYY TCP 1514 [TCP Retransmission] 443 → 56467 [ACK] Seq=1 Ack=1 Win=17 Len=1460 31881 32.588789 XXX.XXX.XXX.XXX → YYY.YYY.YYY.YYY TCP 1514 [TCP Retransmission] 443 → 56467 [ACK] Seq=1 Ack=1 Win=17 Len=1460 31882 32.589809 XXX.XXX.XXX.XXX → YYY.YYY.YYY.YYY TCP 1514 [TCP Retransmission] 443 → 56467 [ACK] Seq=1 Ack=1 Win=17 Len=1460 31883 32.590829 XXX.XXX.XXX.XXX → YYY.YYY.YYY.YYY TCP 1514 [TCP Retransmission] 443 → 56467 [ACK] Seq=1 Ack=1 Win=17 Len=1460 31884 32.591849 XXX.XXX.XXX.XXX → YYY.YYY.YYY.YYY TCP 1514 [TCP Retransmission] 443 → 56467 [ACK] Seq=1 Ack=1 Win=17 Len=1460 31885 32.592870 XXX.XXX.XXX.XXX → YYY.YYY.YYY.YYY TCP 1514 [TCP Retransmission] 443 → 56467 [ACK] Seq=1 Ack=1 Win=17 Len=1460 31886 32.593891 XXX.XXX.XXX.XXX → YYY.YYY.YYY.YYY TCP 1514 [TCP Retransmission] 443 → 56467 [ACK] Seq=1 Ack=1 Win=17 Len=1460 31887 32.594911 XXX.XXX.XXX.XXX → YYY.YYY.YYY.YYY TCP 1514 [TCP Retransmission] 443 → 56467 [ACK] Seq=1 Ack=1 Win=17 Len=1460 31888 32.595931 XXX.XXX.XXX.XXX → YYY.YYY.YYY.YYY TCP 1514 [TCP Retransmission] 443 → 56467 [ACK] Seq=1 Ack=1 Win=17 Len=1460 XXX.XXX.XXX.XXX - my IP YYY.YYY.YYY.YYY - client IP Those TCP sessions produce 10-100Mbit traffic from my server to clients. Please check attached screenshot. -- You are receiving this mail because: You are on the CC list for the bug.
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