Date: Wed, 3 May 2000 21:24:47 -0400 (EDT) From: Howard Leadmon <howardl@account.abs.net> To: Greg Lehey <grog@lemis.com> Cc: Matthew Dillon <dillon@apollo.backplane.com>, freebsd-stable@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG Subject: Re: Debugging Kernel/System Crashes, can anyone help?? Message-ID: <200005040124.VAA55655@account.abs.net> In-Reply-To: <20000504095941.B18453@freebie.lemis.com> from Greg Lehey at "May 4, 2000 09:59:41 am"
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> > OK, well as I don't remember what options had been in what kernel > > from the old crashes, I just setup the machine to generate more > > crash dumps and sure enough it was willing to give me one > > quickly.. :) > > > > Here is a backtrace done on the dump I got only a few minutes ago, > > also please note that currently I am using a DEC based network card > > instead of the EEpro adapter as I had both sitting around. If it > > would be better to try and get the dumps with the EEpro I am sure it > > can be arranged. Also note that I am currently running SMP, but did > > remove one CPU and built a non-SMP kernel to see what happened, and > > still the machine dies.. > > > --- > > #0 0xc013abd1 in boot () > > (kgdb) back > > #0 0xc013abd1 in boot () > > #1 0xc013af94 in poweroff_wait () > > #2 0xc02283cc in trap_fatal () > > #3 0xc022805d in trap_pfault () > > #4 0xc0227c57 in trap () > > #5 0xc01cdca5 in acquire_lock () > > #6 0xc01d2f7c in softdep_count_dependencies () > > #7 0xc01d624c in ffs_fsync () > > #8 0xc01d4d66 in ffs_sync () > > #9 0xc01673ef in sync () > > #10 0xc013a9b3 in boot () > > #11 0xc013af94 in poweroff_wait () > > #12 0xc02283cc in trap_fatal () > > #13 0xc022805d in trap_pfault () > > #14 0xc0227c57 in trap () > > #15 0xc017246b in bpfioctl () > > #16 0xc01c19 in ?? () > > cannot read proc at 0 > > (kgdb) > > Interesting. That explains the splbio, anyway. The real problem is > at frame 15, in bpfioctl, but the system trapped while trying to sync > before dumping. > > As mentioned in the handbook, you need symbols in your kernel in order > to find out any more information. Build a kernel with the -g option > and try again. > > Greg Umm, the kernel was built with the -g option, as I knew I needed to be able to debug it when it crashed. I looked at the handbook, but I don't personally see a clear direction as to where I need to go from here. If you can tell me what to look for I am more than willing to go digging.. --- Howard Leadmon - howardl@abs.net - http://www.abs.net ABSnet Internet Services - Phone: 410-361-8160 - FAX: 410-361-8162 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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