Re: kernel panic with greater that 8 GB of memory

From: Scott Long (scottl_at_freebsd.org)
Date: 11/30/04

  • Next message: Andrew Gallatin: "Re: -current hang during boot on SMP machine" 
    Date: Tue, 30 Nov 2004 06:04:56 -0700
To: Steve Kargl <sgk@troutmask.apl.washington.edu>

    Steve Kargl wrote:
    > On Mon, Nov 29, 2004 at 01:13:41PM -0800, Steve Kargl wrote:
    >
    >>kmem_suballoc: bad status return of 3
    >>panic: kmem_suballoc
    >>cpuid = 0
    >>KDB: stack backtrace:
    >>kdb_backtrace() at kdb_backtrace+0x37
    >>panic() at painc+0x1d1
    >>kmem_suballoc() at kmem_suballoc+0x93
    >>kmeminit() at kmeminit+0x16d
    >>mi_startuup() at mi_startup+0xb6
    >>btext90 at btext+0x2c
    >>KDB: enter: panic
    >>[thread pid 0 tid 0]
    >>
    >>This is a Tyan K8S Pro motherboard with 16 GB of PC2700
    >>Cosair ECC memory. The BIOS was flashed to the latest
    >>available from Tyan. The scheduler is 4BSD. There are
    >>no ATA devices in the system and no ATA subsystem in
    >>the kernel. This a SCSI only box. World and kernel
    >>were rebuilt today with CFLAGS=-O -pipe and
    >>COPTFLAGS=-O -pipe.
    >>
    >>If I set hw.physmem="#G" n /boot/loader.conf where # is
    >>less than or equal to 8 the box boots up (see dmesg below).
    >>If # > 8, then we have the above panic.
    >>
    >>Any ideas where to look for the a fix?
    >>
    >
    >
    > (dmesg snipped)
    > (CC'd to -current because the may impact any system with >8 GB of ram)
    >
    > As a data point, I've downloaded, burned, and booted the netbsd/amd64
    > ISO image. Netbsd's dmesg shows that netbsd correctly finds 16 GB
    > of memory on the system.
    >

    I fixed this on i386 a few months ago, and I applied a similar fix to
    amd64 on the advice of Peter Wemm. Go beat him up on this one =-)

    Scott
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  • Next message: Andrew Gallatin: "Re: -current hang during boot on SMP machine"

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