ath(4) panic: bus_dmamap_load_sg: no mbuf packet header!

From: Pawel Jakub Dawidek (pjd_at_FreeBSD.org)
Date: 09/26/05

  • Next message: Dave+Seddon: "Re: em(4) receive part wedging randomly at moderate load" 
    Date: Mon, 26 Sep 2005 23:04:30 +0200
To: freebsd-net@FreeBSD.org

    Hi.

    I configured NAT (using pf(4)) on my laptop:

    MacOSX (Tiger) <-----> ath0[my laptop]bge0 <-----> local machine

    When I started downloading few files on Mac from "local machine" via FTP
    in parallel I got this panic after few minutes (I was able to reproduce it):

    panic: bus_dmamap_load_sg: no mbuf packet header!

    And the backtrace:

    panic()
    bus_dmamap_load_sg()+0x2a
    ath_start()+0x2ae
    taskqueue_run()+0xaf
    taskqueue_swi_run()+0x13
    ithread_loop()
    ...

    Any ideas? 

    -- 
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd@FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!

  • Next message: Dave+Seddon: "Re: em(4) receive part wedging randomly at moderate load"

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