repeatable crash with 5.4-RELEASE and PAE

From: Brendan White (bmwt_at_caida.org)
Date: 06/02/05

  • Next message: yuval levy: "Re: filesystems not properly unmounted"
    To: freebsd-stable@freebsd.org
    Date: Thu, 2 Jun 2005 12:59:51 -0700
    
    

    We're having crash under load problems using freebsd 5.4-release
    (i386) and PAE kernel.

    Machine:
    Dual Xeon 3.6 Dell Poweredge 2850
    8 gigs of ram
    16 gigs of swap
    amr raid

    The machine will reliably crash under load within an hour or so.
    "under load" involves large network transfers being processed by cpu
    and memory intensive processes.

    i cant get a crash dump (when it starts dumping, it will stop part
    way thru displaying memory increments.)

    I have gotten it to spit out a trace from KDB, which i've copied out
    below.
    (i had to do it from a screenshot/by hand- i checked it twice, but if
    things dont make sence, there may be a typo)

    kernel config included below the trace.
    We've tried turning off hyperthreading. The problem persists.
    We've tried turning off PAE (which brings us from 8 gigs to 3). The
    problem goes away.
    This is obviously not the optimal solution.

    ---
    kdb_enter(c05a1e33) at kdb_enter+0x2b
    panic(c05a0a51,fffffffe,c05a0a3b,cb65ed80,fffffffe) at panic+0x127
    lockmgr(cbadb7e4,6,cbadb738,0,f1b93a0c) at lockmgr+0x421
    vop_stdunlock(f1b93a3c,f1b93a18,c038320f,f1b93a3c,f1b93a59) at  
    vop_stdunlock+0x1f
    vop_defaultop(f1b93a3c,f1b93a58,c038379c,f1b93a3c,1000) at  
    vop_defaultop+0x13
    spec_vnoperate(f1b93a3c,1000,7f010000,cba4e100,f1b93aa4) at  
    spec_vnoperate+0x13
    spec_write(f1b93a84,f1b93ad0,c04fce99,f1b93a84,cb65ed80) at spec_write 
    +0x64
    spec_vnoperate(f1b93a84) at spec_vnoperate+0x13
    vnode_pager_generic_putpages(cbadb738,f1b93be0,1000,0,f1b93b60) at  
    vnode_pager_generic_putpages+0x221
    vop_stdputpages 
    (f1b93b18,f1b93b18,f1b93b04,c038320f,f1b93b18,f1b93b44) at  
    vop_stdputpages+0x1a
    vop_defaultop(f1b93b18,f1b93b44,c04fcc36,f1b93b18,1000) at  
    vop_defaultop+0x13
    spec_vnoperate(f1b93b18) at spec_vnoperate+0x13
    vnode_pager_putpages(cbb53ad4,f1b93be0,1,0,f1b93b60) at  
    vnode_pager_putpages+0xba
    vm_pageout_flush(f1b93be0,1,0,cbd7a600,f1b93bb8) at vm_pageout_flush 
    +0xcb
    vm_pageout_clean(c4254e4c) at vm_pageout_clean+0x2a1
    vm_pageout_scan(0) at vm_pageout_scan+0x706
    vm_pageout(0,f1b93d38) at vm_pageout+0x312
    fork_exit(c04f5e1c,0,f1b93d38) at fork_exit+0x75
    fork_trampoline() at fork_trampoline+0x8
    --- trap 0x1, eip=0, esp = 0xf1b93d6c, ebp = 0 ---
    kernel config:
    include GENERIC
    ident           PAE-GENERIC
    options         KDB_TRACE
    options         KDB
    options         DDB
    makeoptions     DEBUG=-g
    options         SMP
    options         COMPAT_LINUX
    device          acpi
    makeoptions     NO_MODULES=yes
    nodevice        ahb
    nodevice        amd
    nodevice        sym
    nodevice        trm
    nodevice        adv
    nodevice        adw
    nodevice        aha
    nodevice        aic
    nodevice        bt
    nodevice        ncv
    nodevice        nsp
    nodevice        stg
    nodevice        asr
    nodevice        dpt
    nodevice        iir
    nodevice        mly
    nodevice        ida
    nodevice        mlx
    nodevice        pst
    nodevice        agp
    nodevice        de
    nodevice        txp
    nodevice        vx
    nodevice        dc
    nodevice        pcn
    nodevice        rl
    nodevice        sf
    nodevice        sis
    nodevice        ste
    nodevice        tl
    nodevice        tx
    nodevice        vr
    nodevice        wb
    nodevice        cs
    nodevice        ed
    nodevice        ex
    nodevice        ep
    nodevice        fe
    nodevice        ie
    nodevice        lnc
    nodevice        sn
    nodevice        xe
    nodevice        wlan
    nodevice        an
    nodevice        awi
    nodevice        wi
    nodevice        uhci
    nodevice        ohci
    nodevice        ehci
    nodevice        usb
    nodevice        ugen
    nodevice        uhid
    nodevice        ukbd
    nodevice        ulpt
    nodevice        umass
    nodevice        ums
    nodevice        urio
    nodevice        uscanner
    nodevice        aue
    nodevice        axe
    nodevice        cdce
    nodevice        cue
    nodevice        kue
    nodevice        rue
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