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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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