Date: 31 May 1998 04:24:32 -0000 From: "Brian Feldman" <brianfeldman@hotmail.com> To: freebsd-current@FreeBSD.ORG Subject: fd crash (in isa_dmastart) Message-ID: <19980531042432.16101.qmail@m2.findmail.com>
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Well, out of curiousity, I wanted to try SoftUpdates on a floppy. Let's just say that SoftUpdates on a floppy is a Bad Thing, causing Too Much Disk Access and A Bad Panic. (out out evil capitals!) Here's the bt, for those interested, and I'll delete this huge vmcore tomorrow if noone tells me not to and we don't want to try to get any more info out of it:
(kgdb) bt
#0 boot (howto=256) at ../../kern/kern_shutdown.c:281
#1 0xf0118fc7 in panic (fmt=0xf01f1f56 "isa_dmastart: bad bounce buffer")
at ../../kern/kern_shutdown.c:421
#2 0xf01f1fcf in isa_dmastart (flags=587333684, addr=0xf2d4d014 "ð\004",
nbytes=4096, chan=2) at ../../i386/isa/isa.c:767
#3 0xf01ec1fd in fdstate (fdcu=0, fdc=0xf02622d4) at ../../i386/isa/fd.c:1640
#4 0xf01ebcb3 in fdintr (fdcu=0) at ../../i386/isa/fd.c:1445
#5 0xf01ebc75 in fd_pseudointr (arg1=0x0) at ../../i386/isa/fd.c:1425
#6 0xf011d203 in softclock () at ../../kern/kern_timeout.c:124
#7 0xf01d6cc7 in doreti_swi ()
Cannot access memory at address 0x274e35f8.
Now I'm relatively certain that this was specifically caused by way to much disk access on SoftUpdates' part; any idea how we should fix this?
Cheers,
Brian Feldman
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