Date: Tue, 10 Jun 1997 10:01:46 -0700 (PDT) From: "Jin Guojun[ITG]" <jin@iss-p1.lbl.gov> To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: kern/3835: SMP kernel crash on enable "dumps on wd0" Message-ID: <199706101701.KAA20826@iss-p1.lbl.gov> Resent-Message-ID: <199706101710.KAA17428@hub.freebsd.org>
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>Number: 3835 >Category: kern >Synopsis: SMP kernel crash on enable "dumps on wd0" >Confidential: no >Severity: serious >Priority: high >Responsible: freebsd-bugs >State: open >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Tue Jun 10 10:10:01 PDT 1997 >Last-Modified: >Originator: Jin Guojun[ITG] >Organization: >Release: FreeBSD 3.0-970527-SNAP i386 >Environment: FreeBSD 3.0-970527-SNAP >Description: Once "dumps on wd0" is provided on "config kernel" line, system will not boot up. It crashs after -- (enable DDB to see) ... npx0 on motherboard npx0: INT 16 interface amp0: disabled, not probed. Fatal trap 12: page fault while in kernel mode cpunumber = 0 fault virtual address = 0xac . . . Stopped at _tsleep + 0x35: movl 0xac (%ebx),%eax >How-To-Repeat: config kernel by using config kernel root on wd0 dumps on wd0 On any dual Pentium machines with one or two CPUs. It is regardless the savecore or dumpdev in rc.conf options. It crashes before -- sio0:65 events for device with no tp Normal boot up messages: ... npx0 on motherboard npx0: INT 16 interface apm0: disabled, not probed. sio0: 65 events for device with no tp sio1: 65 events for device with no tp After dumps on wd0 used, you will see the problem in Description section. >Fix: >Audit-Trail: >Unformatted:
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