Re: panic: vm_fault: fault on nofault entry, addr: fffffe0007e8e000

From: Kris Kennaway (kris_at_obsecurity.org)
Date: 07/31/03

  • Next message: Bruce Cran: "Re: make buildworld: Signal 11; Illegal instruction" 
    Date: Thu, 31 Jul 2003 13:48:42 -0700
To: Kris Kennaway <kris@obsecurity.org>

    On Thu, Jul 31, 2003 at 01:48:59AM -0700, Kris Kennaway wrote:
    > I upgraded the alpha package machines tonight, and one of them fell
    > over shortly after taking load, with the following:
    >
    > panic: vm_fault: fault on nofault entry, addr: fffffe0007e8e000
    > Stack backtrace:
    > db_print_backtrace() at db_print_backtrace+0x18
    > backtrace() at backtrace+0x2c
    > panic() at panic+0x148
    > vm_fault() at vm_fault+0x1360
    > trap() at trap+0x5c8
    > XentMM() at XentMM+0x2c
    > --- memory management fault (from ipl 0) ---
    > bcopy_samealign_lp() at bcopy_samealign_lp
    > cpu_fork() at cpu_fork+0x12c
    > vm_forkproc() at vm_forkproc+0x204
    > fork1() at fork1+0xfec
    > vfork() at vfork+0x30
    > syscall() at syscall+0x33c
    > XentSys() at XentSys+0x64
    > --- syscall (66) ---
    > --- user mode ---

    Two more panics on alpha:

    panic: vm_fault: fault on nofault entry, addr: fffffe0007fde000
    Debugger() at Debugger+0x38
    panic() at panic+0x168
    vm_fault() at vm_fault+0x1360
    trap() at trap+0x5c8
    XentMM() at XentMM+0x2c
    --- memory management fault (from ipl 0) ---
    bcopy_samealign_lp() at bcopy_samealign_lp+0x8
    copyout() at copyout+0x38
    uiomove() at uiomove+0x19c
    pipe_read() at pipe_read+0x290
    dofileread() at dofileread+0x100
    read() at read+0x64
    syscall() at syscall+0x33c
    XentSys() at XentSys+0x64
    --- syscall (3, FreeBSD ELF64, read) ---
    --- user mode ---
    db>

    fatal kernel trap:

        trap entry = 0x2 (memory management fault)
        faulting va = 0xfffffe0007f9c088
        type = access violation
        cause = load instructon
        pc = 0xfffffc000045570c
        ra = 0xfffffc0000455700
        sp = 0xfffffe0008021ce0
        usp = 0x11ffccd8
        curthread = 0xfffffc00014e84c0
            pid = 4214, comm = bzip2

    Stopped at ast+0x3ec: ldq t0,0x88(t1) <0xfffffe0007f9c088> <t0=0xcfa0,t1=0xfffffe0007f9c00>

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