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Date:      Mon, 03 Dec 2018 18:58:24 +0000
From:      bugzilla-noreply@freebsd.org
To:        ppc@FreeBSD.org
Subject:   [Bug 233579] FreeBSD 12.0-RC2 r340839 GENERIC powerpc needs kern.smp.disabled=1 to boot after install
Message-ID:  <bug-233579-21-29V7Qo6L5G@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-233579-21@https.bugs.freebsd.org/bugzilla/>
References:  <bug-233579-21@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D233579

--- Comment #4 from Dennis Clarke <dclarke@blastwave.org> ---

After speaking with Justin Hibbits we ran some tests with usefdt=3D1 and see
the following panic :

    fatal kernel trap:

      exception       =3D 0x300 (data storage interrupt)
      virtual address =3D 0x907ff7c0c0
      dsisr           =3D 0x40000000
      srr0            =3D 0xc000000000a8c918 (0xa8c918)
      srr1            =3D 0x9000000000001032
      current msr     =3D 0x9000000000001032
      lr              =3D 0xc000000000a8c914 (0xa8c914)
      curthread       =3D 0xc000000001626400
             pid =3D 0, comm =3D swapper

    panic: data storage interrupt trap
    cpuid =3D 0
    time =3D 1
    KDB: stack backtrace:
    #0 0xc0000000006ef5a8 at .kdb_backtrace+0x88
    #1 0xc000000000688528 at .vpanic+0x1b4
    #2 0xc0000000006885f4 at .panic+0x38
    #3 0xc000000000ab2a74 at .trap_fatal+0x25c
    #4 0xc000000000ab416c at .trap+0x15f0
    #5 0xc000000000aa7cd8 at .powerpc_interrupt+0x234
    Uptime: 1s

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