NetBSD Problem Report #31029
From www@netbsd.org Sun Aug 21 20:53:25 2005
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Date: Sun, 21 Aug 2005 20:53:25 +0000 (UTC)
From: wojtek@tensor.3miasto.net
Reply-To: wojtek@tensor.3miasto.net
To: gnats-bugs@netbsd.org
Subject: pppd easily get in 100% CPU loop in -current
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>Number: 31029
>Category: kern
>Synopsis: pppd easily get in 100% CPU loop in -current
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: kern-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Sun Aug 21 20:54:00 +0000 2005
>Originator: Wojciech Puchar
>Release: -current 2 weeks ago
>Organization:
TENSOR ap
>Environment:
NetBSD chylonia.3miasto.net 3.99.7 NetBSD 3.99.7 (chylonia.3miasto.net.mp) #0: Sun Aug 21 20:17:28 CEST 2005 root@chylonia.3miasto.net:/usr/src/sys/arch/i386/compile/chylonia.3miasto.net.mp i386
or
NetBSD serwer.3miasto.net 3.99.7 NetBSD 3.99.7 (3miasto.net) #3: Sun Aug 21 15:05:10 CEST 2005 root@:/usr/src/sys/arch/amd64/compile/3miasto.net amd64
>Description:
pppd works fine on leased line only when both sides responds.
in case of one peed inactive pppd quickly (less than a minute) gets into
100% CPU loop state, in which it stops responding to peer too.
my ppp config looks like that:
tty02
921600
local crtscts
netmask 255.255.255.255
maxfail 0
#deflate 15
nodeflate
persist noauth defaultroute nobsdcomp
noproxyarp
+ipv6
peer (master) looks similar just with IPv4 addresses specified
it worked fine with 2.0.2, doesn't work in -current and it's most probably kernel bug so i classified is as kern
>How-To-Repeat:
use pppd with leased line (with local option not modem) and kill pppd on one peer. second peer will quickly go into 100% CPU state. rerunning pppd
on first peer don't negotiate things again and... quickly goes to 100% CPU state too :(
>Fix:
none
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