Date: Mon, 16 May 2016 22:19:28 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-amd64@FreeBSD.org Subject: [Bug 209471] Listen queue overflow due to too many sockets stuck in CLOSED state Message-ID: <bug-209471-6-iclziHrN6j@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-209471-6@https.bugs.freebsd.org/bugzilla/> References: <bug-209471-6@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D209471 --- Comment #15 from Robert Blayzor <rblayzor@inoc.net> --- I believe I have stumbled onto this problem in it's early stages. I notice = this by catching a process that seems to have a connection in a "CLOSED" state f= or what seems like forever. If I look at it closer... dev@mta2 [~] netstat -an | grep CLOSED tcp6 0 0 2607:f058:110:2:.25 2607:f058:110:2:.40858 CLOSED dev@mta2 [~] sockstat | grep 40858 mailnull exim 35876 7 tcp6 2607:f058:110:2::1:2:25 2607:f058:110:2::f:0:40858 mailnull exim 35876 9 tcp6 2607:f058:110:2::1:2:25 2607:f058:110:2::f:0:40858 dev@mta2 [~] sudo tcpdrop 2607:f058:110:2::1:2 25 2607:f058:110:2::f:0 40858 tcpdrop: 2607:f058:110:2::1:2 25 2607:f058:110:2::f:0 40858: No such process If I kill the process and restart it... the old process sticks around and t= he socket never clears. dev@mta2 [~] sudo killall -9 exim dev@mta2 [~] ps auxww | grep exim mailnull 35876 0.0 0.4 41708 8184 - DL 9:21PM 0:09.40 /usr/local/sbin/exim -bd -q10m dev@mta2 [~] netstat -an | grep CLOSED tcp6 0 0 2607:f058:110:2:.25 2607:f058:110:2:.40858 CLOSED dev@mta2 [~] sudo service exim start Starting exim. dev@mta2 [~] gps exim root 39120 0.2 0.4 41708 8364 - Ss 10:15PM 0:00.00 /usr/local/sbin/exim -bd -q10m mailnull 35876 0.0 0.4 41708 8184 - DL 9:21PM 0:09.48 /usr/local/sbin/exim -bd -q10m sockstat | grep 40858 mailnull exim 35876 7 tcp6 2607:f058:110:2::1:2:25 2607:f058:110:2::f:0:40858 mailnull exim 35876 9 tcp6 2607:f058:110:2::1:2:25 2607:f058:110:2::f:0:40858 I'm not expert on kernel VM, but think stinks as related to previous bug.=20 Top state shows: vmf_de ? 35876 mailnull 1 20 0 41708K 8184K vmf_de 2 0:10 0.00% exim --=20 You are receiving this mail because: You are on the CC list for the bug.=
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