Date: Tue, 30 Nov 2004 06:04:56 -0700 From: Scott Long <scottl@freebsd.org> To: Steve Kargl <sgk@troutmask.apl.washington.edu> Cc: freebsd-amd64@freebsd.org Subject: Re: kernel panic with greater that 8 GB of memory Message-ID: <41AC6FF8.40501@freebsd.org> In-Reply-To: <20041129233211.GA27426@troutmask.apl.washington.edu> References: <20041129211341.GA26548@troutmask.apl.washington.edu> <20041129233211.GA27426@troutmask.apl.washington.edu>
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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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