Date: Fri, 23 Mar 2001 18:26:08 -0800 (PST) From: John Baldwin <jhb@FreeBSD.org> To: Tom Duffey <tduffey@wi.rr.com> Cc: freebsd-smp@FreeBSD.org Subject: RE: More detailed debugging info for Netfinity SMP lock Message-ID: <XFMail.010323182608.jhb@FreeBSD.org> In-Reply-To: <Pine.LNX.4.21.0103231017280.187-100000@linuxpower.p00t.net>
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On 23-Mar-01 Tom Duffey wrote:
> Thanks to everyone for the help so far. This morning I upgraded the
> system BIOS to the latest provided by IBM (v1.06) but still cannot boot
> the system with an SMP enabled kernel. However, I enabled the kernel
> debugger and came up with the following:
>
> stopped at atkbd_isa_intr+0x19; ret
> stopped at Xresume1+0x35: cli
> stopped at Xresume1+0x36: lock andl $-0x3,iactive
> stopped at Xresume1+0x3e: pushl $0xc02e3140
> stopped at Xresume1+0x43: call s_lock
> stopped at s_lock: movel 0x4(%esp),$edx
> stopped at setlock: movel %fs:0x94,%ecx
> stopped at setlock+0x7: incl %ecx
> stopped at setlock+0x8: movl $0,%eax
> stopped at setlock+0xd: lock cmpxchgl %ecx,0(%edx)
> panic: rslock: cpu: 1, addr 0xc02e3140, lock: 0x01000001
> mp_lock = 01000003; cpuid = 1; lapic.id = 00000000
> Debugger("panic")
> Stopped at Debugger+0x34: movb $0,in_Debugger,597
> db>
Type 'trace' here to see where we are. It is recursing on a simplelock which
is very bad. It is probably a kernel bug but could be something else.
--
John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/
PGP Key: http://www.baldwin.cx/~john/pgpkey.asc
"Power Users Use the Power to Serve!" - http://www.FreeBSD.org/
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