Date: Wed, 13 May 1998 11:19:38 -0500 (CDT) From: toasty@home.dragondata.com To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: kern/6623: non-root user can crash system if disconnected de card present Message-ID: <199805131619.LAA03995@home.dragondata.com>
next in thread | raw e-mail | index | archive | help
>Number: 6623 >Category: kern >Synopsis: non-root user can crash system if disconnected de card present >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed May 13 09:20:01 PDT 1998 >Last-Modified: >Originator: Kevin Day >Organization: DragonData Internet Services >Release: FreeBSD 2.2.5-STABLE i386 >Environment: 2.2.6 server with two de cards in it. de1 was 'down'... (hub went down, and the card complained of a 'cable problem?') >Description: After a de device has decided it can't talk, you can make a server instantly reboot (no panic) ping -s 2048 (hostname of a server across the dead de card)... For a while you'll get 'ping: sendto: host is down'. Then if you keep going, 'ping: sendto: no buffer space available'... (at this point, my de0 card stopped responding as well). After a few more minutes, the machine just rebooted. >How-To-Repeat: Unplug the cable to a de card, and send lots of traffic to it. (ifconfig must still show the interface as 'up'). Also... Why after a card decides theres a cable problem will it not detect the cable being put back in until you do a 'ifconfig de0 down'. (as soon a syou type that, it suddenly sees the cable again) These are netgear 10/100 cards... de0: <Digital 21140A Fast Ethernet> rev 0x22 int a irq 19 on pci0.17.0 de0: 21140A [10-100Mb/s] pass 2.2 >Fix: >Audit-Trail: >Unformatted: Kevin Day To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199805131619.LAA03995>