there is a bug in twe driver or disk subsystem for sure

From: Artem Koutchine (matrix_at_itlegion.ru)
Date: 04/02/04

  • Next message: Kip Macy: "Re: 5.2-current does not allow login and panics with modifiedmemory after free"
    To: <freebsd-current@freebsd.org>
    Date: Fri, 2 Apr 2004 21:04:34 +0400
    
    

    I am running 5.2-CURRENT. The box has 3w 8506-4LP
    SATA raid controller and freebsd is install onto raid5 array.

    Almost everytime i pull a hotswap disk (one out of four)
    or when very heavy disk activity (like background fsck after
    crashing on a 310GB label) i get the following after 10 or
    so minutes of uptime:

    Memory modified after free 0x788f400(508) val=20202020 @ 0xe788f400
    panic: Most recently used by devbuf
    at line 128 in file /usr/src/sys/udm_dbg.c
    cpu=0;
    Debugger ("panic")
    Stopped at Debugger +0.46: xchgl %ebx, in_Debugger.0

    and i typed 'c' in debugger:

    the system started to shutdown and here is what i saw:

    twe0: failed to delete unit 0
    stray irq9

    The box is:
    permicro X5DPE-G2 motherboard
    DUAL XEON 2.66Ghz (HT enabled) 533Mhz bus
    2GB RAM
    4 SATA SEAGTE 120GB DRIVES
    3WARE 8506-4LP SATA RAID5 CONTROLLER

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  • Next message: Kip Macy: "Re: 5.2-current does not allow login and panics with modifiedmemory after free"

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