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    Subject[2.2.1] CODA's /proc file get angry on Alpha
    Can't reproduce this on a ia32 box but can on a DEC Alpha.

    To reproduce:

    1. Compile coda filesystem into kernel (I'm betting it happens if it's a module,
    also)
    2. cd /proc/fs/coda
    3. cat upcall_stats
    4. Boom. Oppsen poopsen.

    I did it twice in a row (without rebooting) just to see if the first opps
    corrupted anything. The stuff sysklogd resolved look kind of suspect.

    Here are the dirty details:

    Feb 7 05:35:02 multiameal kernel: Unable to handle kernel paging request at
    virtual address 0000000000040159
    Feb 7 05:35:02 multiameal kernel: cat(1283): Oops 0
    Feb 7 05:35:02 multiameal kernel: pc = [bt463_cursor_source+5312/9152] ra =
    [bt463_cursor_source+8280/9152] ps = 0000
    Feb 7 05:35:02 multiameal kernel: r0 = 0000000000040159 r1 = 0000000000000000
    r2 = ffffffffffffffff
    Feb 7 05:35:02 multiameal kernel: r3 = fffffc0000000000 r4 = fffffc00004a61ca
    r5 = fffffc00004936e1
    Feb 7 05:35:02 multiameal kernel: r6 = fffffc000045fc64 r7 = 0000000000000001
    r8 = fffffc000133c000
    Feb 7 05:35:02 multiameal kernel: r9 = fffffc000133fda8 r10= fffffc0000000018
    r11= fffffc000133fe18
    Feb 7 05:35:02 multiameal kernel: r12= 0000000000040159 r13= ffffffffffffffff
    r14= 0000000000000000
    Feb 7 05:35:02 multiameal kernel: r15= ffffffffffffffff
    Feb 7 05:35:02 multiameal kernel: r16= 0000000000040159 r17= fffffffffffffffe
    r18= fffffc000133fda8
    Feb 7 05:35:02 multiameal kernel: r19= fffffc0000000010 r20= 0000000000000000
    r21= 0000000000000000
    Feb 7 05:35:02 multiameal kernel: r22= 0000000000000000 r23= fffffc000159d380
    r24= fffffc00004dcaa0
    Feb 7 05:35:02 multiameal kernel: r25= 0000000000000001 r27= fffffc000045f0e0
    r28= 0000000000000dcc
    Feb 7 05:35:02 multiameal kernel: gp = fffffc00004d23b8 sp = fffffc000133fcf8
    Feb 7 05:35:02 multiameal kernel: Code: 2fe00000 47ff041f 2fe00000
    <2c200000> 482000c1 e4200004 42203531 40003400 422205a1
    Feb 7 05:35:02 multiameal kernel: Trace: [__init_end+60/16384]
    [fat_date_unix2dos+544/640] [dev_getbyhwaddr+32/160] [send_sig_info+460/800]
    [remove_from_queues+288/480] [strace+56/92] [restore_all+28/140]

    Opps 2:

    Feb 7 14:08:14 multiameal kernel: Unable to handle kernel paging request at
    virtual address 0000000000040159
    Feb 7 14:08:14 multiameal kernel: cat(1369): Oops 0
    Feb 7 14:08:14 multiameal kernel: pc = [bt463_cursor_source+5312/9152] ra =
    [bt463_cursor_source+8280/9152] ps = 0000
    Feb 7 14:08:14 multiameal kernel: r0 = 0000000000040159 r1 = 0000000000000000
    r2 = ffffffffffffffff
    Feb 7 14:08:14 multiameal kernel: r3 = 0000000000000000 r4 = fffffc00004a61ca
    r5 = fffffc00004936e1
    Feb 7 14:08:14 multiameal kernel: r6 = fffffc000045fc64 r7 = 0000000000000001
    r8 = fffffc00012e4000
    Feb 7 14:08:14 multiameal kernel: r9 = fffffc00012e7da8 r10= 0000000000000018
    r11= fffffc00012e7e18
    Feb 7 14:08:14 multiameal kernel: r12= 0000000000040159 r13= ffffffffffffffff
    r14= 0000000000000000
    Feb 7 14:08:14 multiameal kernel: r15= ffffffffffffffff
    Feb 7 14:08:14 multiameal kernel: r16= 0000000000040159 r17= fffffffffffffffe
    r18= fffffc00012e7da8
    Feb 7 14:08:14 multiameal kernel: r19= 0000000000000010 r20= 0000000000000000
    r21= 0000000000000000
    Feb 7 14:08:14 multiameal kernel: r22= 0000000000000000 r23= fffffc00019f7300
    r24= fffffc00004dcaa0
    Feb 7 14:08:14 multiameal kernel: r25= 0000000000000001 r27= fffffc000045f0e0
    r28= 0000000000000a6d
    Feb 7 14:08:14 multiameal kernel: gp = fffffc00004d23b8 sp = fffffc00012e7cf8
    Feb 7 14:08:14 multiameal kernel: Code: 2fe00000 47ff041f 2fe00000
    <2c200000> 482000c1 e4200004 42203531 40003400 422205a1
    Feb 7 14:08:14 multiameal kernel: Trace: [__init_end+60/16384]
    [fat_date_unix2dos+544/640] [setscheduler+376/480] [dev_getbyhwaddr+32/160]
    [send_sig_info+460/800] [remove_from_queues+288/480] [strace+56/92]
    [restore_all+28/140]

    --
    Which is worse, ignorance or apathy? Who knows? Who cares?
    Mass genocide is the most exhausting activity one can engage in, next to soccer.
    Next on FOX: When penguins attack. . . (Linux 2.2)

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