Date: Fri, 19 Oct 2007 15:49:06 +0100 From: "Andrew Liles" <Andrew.Liles@lbi.com> To: <freebsd-questions@freebsd.org> Subject: FreeBSD hang without panic Message-ID: <EA6F9EFA97D00C4CA7DAFEAF26CE4DEA01D71C5F@aristotle.wheel.net>
next in thread | raw e-mail | index | archive | help
On=20a=20FreeBSD=205.2.1=20box=20that=20has=20been=20in=20production=20a=20= long=20time,=20I=20have=20had a=20new=20type=20of=20hang=20on=20two=20days=20this=20week,=20the=20type=20= of=20which=20I=20have=20not seen=20before.=20=20(No=20recent=20software/hardware=20changes). Symptom:=20The=20machine=20is=20a=20web/email=20server=20only.=20=20It=20s= tops=20receiving=20new SSH/HTTP/IMAP/POP=20connections,=20existing=20shells=20cease=20working. On=20the=20machine=20itself=20no=20messages=20are=20shown=20and=20the=20ma= chine=20responds=20to repeated=20ENTER=20key=20presses=20with=20the=20login=20prompt.=20=20Once=20= you=20enter=20"root" [ENTER]=20then=20no=20further=20responses=20(except=20line=20feeds=20as=20= you=20press=20ENTER). What=20kind=20of=20hang=20is=20this?=20Could=20it=20be=20a=20DoS=20attack?= =20Or=20is=20it=20some internal=20process=20hanging?=20=20I=20have=20a=20debug=20kernel=20but=20a= s=20the=20only=20solution is=20a=20power-off=20reset,=20I=20never=20get=20any=20dump. Any=20suggestions=20please=20where=20I=20might=20start=20to=20look,=20or=20= services=20to experiment=20disabling? ______________________________________________________________________ This=20email=20has=20been=20scanned=20by=20the=20MessageLabs=20Email=20Sec= urity=20System. For=20more=20information=20please=20visit=20http://www.messagelabs.com/ema= il=20 ______________________________________________________________________
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?EA6F9EFA97D00C4CA7DAFEAF26CE4DEA01D71C5F>