I forgot to add:
In the log of pmap.c I found
revision 1.97
date: 2007/02/20 21:15:01; author: tom; state: Exp; lines: +204 -500
Revert PAE pmap for now, until the strange bug is found. This stops
the freezes many of us are seeing (especially on amd64 machines running
OpenBSD/i386).
Much testing by nick@ (as always - thanks!), hugh@, ian@, kettenis@
and Sam Smith (s (at) msmith (dot) net).
Requested by, input from, and ok deraadt@ ok art@, kettenis@, miod@
What is "the strange bug"?
Thanks again
Jon Steel wrote:
> Hi
>
> Ive finally got the current version running and the problem below has
> disappeared. I was wondering however if the problem has actually been
> solved.
>
> The line of code that Im crashing on is line 3005 of pmap.c in version 4.0:
>
> 3005 if (pve->pv_ptp && (PDE(pve->pv_pmap,
> 3006 pdei(pve->pv_va)) & PG_FRAME) !=
> 3007 VM_PAGE_TO_PHYS(pve->pv_ptp)) {
>
> Specifically its crashing on PDE(pve->pv_pmap, pdei(pve->pv_val) because
> of a page fault. This code has disappeared in -current, but does anybody
> who was working on this section of code now why I was having this
> problem or if its been fixed?
>
> Thank you
>
> Jonathan Steel
>
>
> Jon Steel wrote:
>
>> Hi
>>
>> Im having a very similar problem as the one reported in Bug Query 5374.
>> Im trying to solve the problem but Im finding it very hard to even get
>> started. Is there somewhere besides the code that I can start to try and
>> understand how SMP is being handled?
>>
>> http://cvs.openbsd.org/cgi-bin/query-pr-wrapper?full=yes&numbers=5374
>>
>> I can usually duplicate the crash by running the follwing script several
>> times concurrently.
>>
>> #!/usr/bin/perl
>>
>> system("tcpdump -i em1 -w /var/crashTest1.pcap&");
>> system("tcpdump -i em1 -w /var/crashTest2.pcap&");
>> system("tcpdump -i em1 -w /var/crashTest3.pcap&");
>> system("tcpdump -i em1 -w /var/crashTest4.pcap&");
>> system("tcpdump -i em1 -w /var/crashTest5.pcap&");
>> system("tcpdump -i em1 -w /var/crashTest6.pcap&");
>> system("tcpdump -i em1 -w /var/crashTest7.pcap&");
>>
>> while (1) {
>> system("nmap 192.168.66.90&");
>> }
>>
>> Then after about an hour, when you try and reboot, I get an error:
>>
>> uvm_fault(0x..., 0x..., 0, 1) -> e
>> kernel: page fault trap, code = 0
>> stopped at pmap_page_remove_86+0x114:
>> 0(%eax, %edx, 4), %eax
>>
>> The trace output is:
>>
>> pmap_page_remove_86(d0d31420,c0,e9b57e2c,d04adeb9,e99f) at
>> pmap_page_remove_86+0x114
>> uvm_vnp_terminate(d8034e04,0,0,0,0,14,0,d7e95004) at uvm_vnpterminate+0x31f
>> uvm_attach(d8034e04,0,2,0,d7f38378) at uvn_attach+0x2b5
>> uvm_unmap_detach(d7e959a4,0,d7f3841c,1) at uvm_unmap_detach+-x62
>> uvmspace_free(d7f38378,6,d08120e0) at uvmspace_free+0xfd
>> uvm_exit(d7fbb868,14,8,286) at uvm_exit+0x19
>> reaper(d80df430) at reaper+0x90
>> Bad frame pointer: 0xd0913eb8
>>
>>
>> A couple times the error has also occured on its own without saying
>> 'reboot' when running a ton of nmaps and tcpdumps at the same time.
>>
>> This trace is remarkably similar to the one in Bug Query 5374.
>> Additionally I am using the same processor as he is. There is an unkown
>> core statement in my dmesg but both cores seem to be working correctly.
>> Here is my dmesg:
>>
>> OpenBSD 4.0 (GENERIC.MP) #936: Sat Sep 16 19:27:28 MDT 2006
>> [EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC.MP
>> cpu0: Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz ("GenuineIntel" 686-class)
>> 2.13 GHz
>> cpu0:
>> FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CF
>> LUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,VMX,EST,TM2,CX16
>> real mem = 2145869824 (2095576K)
>> avail mem = 1949290496 (1903604K)
>> using 4256 buffers containing 107397120 bytes (104880K) of memory
>> mainbus0 (root)
>> bios0 at mainbus0: AT/286+(e6) BIOS, date 10/30/06, BIOS32 rev. 0 @
>> 0xfd470, SMB IOS rev. 2.51 @ 0x7feea000 (33 entries)
>> bios0: Supermicro PDSMi
>> pcibios0 at bios0: rev 2.1 @ 0xfd470/0xb90
>> pcibios0: PCI BIOS has 20 Interrupt Routing table entries
>> pcibios0: PCI Interrupt Router at 000:31:0 ("Intel 82801GB LPC" rev 0x00)
>> pcibios0: PCI bus #15 is the last bus
>> bios0: ROM list: 0xc0000/0xb000 0xcb000/0x1000 0xcc000/0x1000 0xcd000/0x1000
>> ipmi at mainbus0 not configured
>> mainbus0: Intel MP Specification (Version 1.4) (INTEL MUKILTEO )
>> cpu0 at mainbus0: apid 0 (boot processor)
>> cpu0: unknown Core FSB_FREQ value 0 (0x42080000)
>> cpu0: apic clock running at 266 MHz
>> cpu1 at mainbus0: apid 1 (application processor)
>> cpu1: Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz ("GenuineIntel" 686-class)
>> 2.13 GHz
>> cpu1:
>> FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CF
>> LUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,VMX,EST,TM2,CX16
>> mainbus0: bus 0 is type PCI
>> mainbus0: bus 9 is type PCI
>> mainbus0: bus 10 is type PCI
>> mainbus0: bus 13 is type PCI
>> mainbus0: bus 14 is type PCI
>> mainbus0: bus 15 is type PCI
>> mainbus0: bus 16 is type ISA
>> ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins
>> ioapic1 at mainbus0: apid 3 pa 0xfec10000, version 20, 24 pins
>> pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
>> pchb0 at pci0 dev 0 function 0 "Intel E7230 MCH" rev 0xc0
>> ppb0 at pci0 dev 1 function 0 "Intel E7230 PCIE" rev 0xc0
>> pci1 at ppb0 bus 1
>> ppb1 at pci0 dev 28 function 0 "Intel 82801GB PCIE" rev 0x01
>> pci2 at ppb1 bus 9
>> ppb2 at pci2 dev 0 function 0 "Intel PCIE-PCIE" rev 0x09
>> pci3 at ppb2 bus 10
>> em0 at pci3 dev 1 function 0 "Intel PRO/1000GT (82541GI)" rev 0x05: apic
>> 3 int 0 (irq 11), address 00:0e:0c:b6:80:9e
>> "Intel IOxAPIC" rev 0x09 at pci2 dev 0 function 1 not configured
>> ppb3 at pci0 dev 28 function 4 "Intel 82801G PCIE" rev 0x01
>> pci4 at ppb3 bus 13
>> em1 at pci4 dev 0 function 0 "Intel PRO/1000MT (82573E)" rev 0x03: apic
>> 2 int 16 (irq 11), address 00:30:48:8a:ca:f8
>> ppb4 at pci0 dev 28 function 5 "Intel 82801G PCIE" rev 0x01
>> pci5 at ppb4 bus 14
>> em2 at pci5 dev 0 function 0 "Intel PRO/1000MT (82573L)" rev 0x00: apic
>> 2 int 17 (irq 11), address 00:30:48:8a:ca:f9
>> uhci0 at pci0 dev 29 function 0 "Intel 82801GB USB" rev 0x01: apic 2 int
>> 23 (irq 10)
>> usb0 at uhci0: USB revision 1.0
>> uhub0 at usb0
>> uhub0: Intel UHCI root hub, rev 1.00/1.00, addr 1
>> uhub0: 2 ports with 2 removable, self powered
>> uhci1 at pci0 dev 29 function 1 "Intel 82801GB USB" rev 0x01: apic 2 int
>> 19 (irq 11)
>> usb1 at uhci1: USB revision 1.0
>> uhub1 at usb1
>> uhub1: Intel UHCI root hub, rev 1.00/1.00, addr 1
>> uhub1: 2 ports with 2 removable, self powered
>> uhci2 at pci0 dev 29 function 2 "Intel 82801GB USB" rev 0x01: apic 2 int
>> 18 (irq 5)
>> usb2 at uhci2: USB revision 1.0
>> uhub2 at usb2
>> uhub2: Intel UHCI root hub, rev 1.00/1.00, addr 1
>> uhub2: 2 ports with 2 removable, self powered
>> uhci3 at pci0 dev 29 function 3 "Intel 82801GB USB" rev 0x01: apic 2 int
>> 16 (irq 11)
>> usb3 at uhci3: USB revision 1.0
>> uhub3 at usb3
>> uhub3: Intel UHCI root hub, rev 1.00/1.00, addr 1
>> uhub3: 2 ports with 2 removable, self powered
>> ehci0 at pci0 dev 29 function 7 "Intel 82801GB USB" rev 0x01: apic 2 int
>> 23 (irq 10)
>> usb4 at ehci0: USB revision 2.0
>> uhub4 at usb4
>> uhub4: Intel EHCI root hub, rev 2.00/1.00, addr 1
>> uhub4: 8 ports with 8 removable, self powered
>> ppb5 at pci0 dev 30 function 0 "Intel 82801BA AGP" rev 0xe1
>> pci6 at ppb5 bus 15
>> vga1 at pci6 dev 0 function 0 "ATI ES1000" rev 0x02
>> wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
>> wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
>> ichpcib0 at pci0 dev 31 function 0 "Intel 82801GB LPC" rev 0x01: PM disabled
>> pciide0 at pci0 dev 31 function 1 "Intel 82801GB IDE" rev 0x01: DMA,
>> channel 0 c onfigured to compatibility, channel 1 configured to
>> compatibility
>> atapiscsi0 at pciide0 channel 0 drive 0
>> scsibus0 at atapiscsi0: 2 targets
>> cd0 at scsibus0 targ 0 lun 0: <TEAC, CD-224E-N, 1.AA> SCSI0 5/cdrom
>> removable
>> cd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2
>> pciide0: channel 1 disabled (no drives)
>> pciide1 at pci0 dev 31 function 2 "Intel 82801GR AHCI SATA" rev 0x01:
>> DMA, chann el 0 wired to native-PCI, channel 1 wired to native-PCI
>> pciide1: using apic 2 int 19 (irq 11) for native-PCI interrupt
>> wd0 at pciide1 channel 0 drive 0: <WDC WD3200YS-01PGB0>
>> wd0: 16-sector PIO, LBA48, 305245MB, 625142448 sectors
>> wd1 at pciide1 channel 0 drive 1: <WDC WD5000YS-01MPB1>
>> wd1: 16-sector PIO, LBA48, 476940MB, 976773168 sectors
>> wd0(pciide1:0:0): using PIO mode 4, Ultra-DMA mode 5
>> wd1(pciide1:0:1): using PIO mode 4, Ultra-DMA mode 5
>> wd2 at pciide1 channel 1 drive 0: <WDC WD5000YS-01MPB0>
>> wd2: 16-sector PIO, LBA48, 476940MB, 976773168 sectors
>> wd2(pciide1:1:0): using PIO mode 4, Ultra-DMA mode 5
>> ichiic0 at pci0 dev 31 function 3 "Intel 82801GB SMBus" rev 0x01: apic 2
>> int 19 (irq 11)
>> iic0 at ichiic0
>> lm1 at iic0 addr 0x2d: W83627HF
>> "unknown" at iic0 addr 0x2f not configured
>> isa0 at ichpcib0
>> isadma0 at isa0
>> pckbc0 at isa0 port 0x60/5
>> pckbd0 at pckbc0 (kbd slot)
>> pckbc0: using irq 1 for kbd slot
>> wskbd0 at pckbd0: console keyboard, using wsdisplay0
>> pcppi0 at isa0 port 0x61
>> midi0 at pcppi0: <PC speaker>
>> spkr0 at pcppi0
>> lpt0 at isa0 port 0x378/4 irq 7
>> lm0 at isa0 port 0x290/8: W83627HF
>> lm1 detached
>> npx0 at isa0 port 0xf0/16: using exception 16
>> pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
>> pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
>> fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
>> biomask 0 netmask 0 ttymask 0
>> ioapic0: pin 16 shares different IPL interrupts (40..50), degraded
>> performance
>> pctr: 686-class user-level performance counters enabled
>> mtrr: Pentium Pro MTRR support
>> dkcsum: wd0 matches BIOS drive 0x80
>> dkcsum: wd1 matches BIOS drive 0x82
>> dkcsum: wd2 matches BIOS drive 0x81
>> root on wd0a
>> rootdev=0x0 rrootdev=0x300 rawdev=0x302
>> cpu1: unknown Core FSB_FREQ value 0 (0x42080000)
>>
>> Thank You
>>
>> Jonathan Steel
