Date: Thu, 05 Dec 1996 20:06:51 -0700 From: Steve Passe <smp@csn.net> To: smp@FreeBSD.ORG Cc: Tor.Egge@idt.ntnu.no (Tor Egge), "J.M. Chuang" <smp@bluenose.na.tuns.ca>, Janick.Taillandier@ratp.fr (Janick TAILLANDIER), Peter Wemm <peter@spinner.dialix.com> Subject: last major problem Message-ID: <199612060306.UAA16913@clem.systemsix.com> In-Reply-To: Your message of "Thu, 05 Dec 1996 21:52:00 -0400." <199612060152.VAA23427@bluenose.na.tuns.ca>
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Hi,
It appears we have one last serious problem to fix. 3 users report
crashing shortly after starting the 2nd CPU.
--
>I tried a few hours old kernel on an ASUS P/I-P65UP5, with APIC_IO
>enabled. When compiling a new kernel with two active CPUs, I got
>error messages from gcc, and the compile failed. Restarting the
>kernel compiling caused a trap 12, and a kernel dump.
>
>When looking at the kernel dump, I get
>
>#0 boot (howto=256) at ../../kern/kern_shutdown.c:267
>#1 0xe0112d29 in panic (fmt=0xe01bcbcf "page fault")
> at ../../kern/kern_shutdown.c:395
>#2 0xe01bd8b5 in trap_fatal (frame=0xdfbffe58) at ../../i386/i386/trap.c:747
>#3 0xe01bd2e8 in trap_pfault (frame=0xdfbffe58, usermode=0)
> at ../../i386/i386/trap.c:654
>#4 0xe01bcf1b in trap (frame={tf_es = -270335984, tf_ds = 16,
> tf_edi = -270395292, tf_esi = -541077504, tf_ebp = -541065552,
> tf_isp = -541065600, tf_ebx = 296243200, tf_edx = -4194304,
> tf_ecx = -528396, tf_eax = -528396, tf_trapno = 12, tf_err = 0,
> tf_eip = -535058833, tf_cs = 8, tf_eflags = 66178, tf_esp = -530083069,
> tf_ss = -270296448}) at ../../i386/i386/trap.c:313
>#5 0xe01ba66f in pmap_enter (pmap=0xefe21864, va=3753889792, pa=296243200,
> prot=7 '\a', wired=0) at ../../i386/i386/pmap.c:2014
>#6 0xe01a4153 in vm_fault (map=0xefe21800, vaddr=3753889792,
> fault_type=3 '\003', change_wiring=0) at ../../vm/vm_fault.c:773
>#7 0xe01bd240 in trap_pfault (frame=0xdfbfffbc, usermode=1)
> at ../../i386/i386/trap.c:634
>#8 0xe01bcdc3 in trap (frame={tf_es = 39, tf_ds = 39, tf_edi = 352256,
> tf_esi = 330220, tf_ebp = -541074428, tf_isp = -541065244, tf_ebx = 0,
> tf_edx = 1, tf_ecx = 330220, tf_eax = 0, tf_trapno = 12, tf_err = 7,
> tf_eip = 45296, tf_cs = 31, tf_eflags = 66050, tf_esp = -541074452,
> tf_ss = 39}) at ../../i386/i386/trap.c:241
>(kgdb) up 5
>#5 0xe01ba66f in pmap_enter (pmap=0xefe21864, va=3753889792, pa=296243200,
> prot=7 '\a', wired=0) at ../../i386/i386/pmap.c:2014
>2014 origpte = *(vm_offset_t *)pte;
>(kgdb) print/x pte
>$2 = 0xfff7eff4
>
>This indicates an attempt to dereference address 0xfff7eff4, which seems
>bogus :-(
>
>- Tor Egge
---
> I turn on DDB, here is the report from DDB when system reboots shortly after
> the second CPU is launched:
>
> cpunumber =0
> fault virtual address = 0xfffbeff4
> fault code = supervisor read, page not present
> instruction pointer = 0x8:0xf01be11b
> stack pointer = 0x8:0xefbffe94
> frame pointer = 0x10:0xefbffeb0
> code segment = base 0x0, limit 0xffff, type0x1b
> = DPL 0, pres 1, def32 1, gran 1
> processor eflags = interrupt enabled, resume, IOPL=0
> current process = 270 (sh)
> interrupt mask =
> kernel: type 12 trap, code=0
> stopped at _pmap_enter+0x8f: movl 0 (%ecx), %ecx
> db> trace
> _pmap_enter (f0cbc464,efbfd000,da5000,7,0) at _pmap_enter+0x8ff
> vm_fault(f0cbc400,efbfd000,3,0,0) at _vm_fault+0xd0b
> trap_pfault(efbfffbc,1) at _trap_pfault+0xd4
> _trap(27,27,56000,509ec,efbfdb34) at _trap+0x146
> calltrap() at calltrap+0x1a
> - trap 12, eip=0xb0f0, ebp=0xefbfdb34 ---
> - curporc=0xf0be3c00, pie=270 ---
>
>
> Jim
---
>I have installed the latest patches and I am still having trap 12
>a few seconds after starting the second CPU. Everything seems ok
>with only one CPU.
>The machine is a Dell Optiplex GXpro with 2 P6 200 MHz, 32MB,
>SCSI disk on Adaptec 2940UW.
> ...
>Stopped at _pmap_enter+0x8f: movl 0(%ecx),%ecx
>
>trace gives:
>
>_pmap_enter(f13ad064,efbfd000,17c8000,7,0) at _pmap_enter+0x8f
>_vm_fault(f13ad000,efbfd000,3,0,0) at _vm_fault+xxd`b
>_trap_pfault(efbfffbc,1) at _trap_pfault+0xd4
>_trap(27,27,50274,1,efbfd5F4) at _trap+0x14b
>calltrap() at calltrap+0x1a
>--- trap 12, eip = 0xe9fc, ebp =0xefbfd5f4 ---
>--- curproc = 0xf13e9a00, pid = 1561 ---
>
>I have similar crash without APIC_IO or SMP_INVLTLB.
>
>Janick
---
Tor's machine:
P6, Asus P/I-P65UP5/C-P6ND, entry 5 in mptable database
Jims's machine:
P6, Titan Pro, entry 17 in mptable database (someone else, same MB)
(I'm assumming its the Titan Pro, Tomcat II/EIDE previously reported working)
Janick's machine:
P6, Dell Optiplex GXPro, entry 6 in mptable database.
They're all P6, ...
any theories/clues???
--
Steve Passe | powered by
smp@csn.net | FreeBSD
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