Oops: mounting floppy disk on PPC64 (power3)

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this is kernel compiled with gcc 4.1.0 (gentoo patches). I never 
tried to mount a floppy on this system before, so I don't know if it Oops'ed 
in previous kernel versions, too.

power3 ~ # uname -a
Linux power3 #1 Fri Mar 31 21:08:43 UTC 2006 ppc64 POWER3 (630+) CHRP 
IBM,7044-170 GNU/Linux
power3 ~ # modprobe floppy
power3 ~ # mount /mnt/floppy/
Oops: Kernel access of bad area, sig: 11 [#1]
Modules linked in: floppy
NIP: C0000000000201E8 LR: D0000000000C43A4 CTR: C0000000000201D8
REGS: c0000000003df470 TRAP: 0300   Not tainted  (
MSR: A000000000001032 <ME,IR,DR>  CR: 48000082  XER: 00000000
DAR: 0000000000000178, DSISR: 0000000040000000
TASK = c0000000003fc9b0[0] 'swapper' THREAD: c0000000003dc000
GPR00: C00000000042FC08 C0000000003DF6F0 C0000000004D3310 0000000000000000
GPR04: C00000000161D000 0000000000000400 0000000000000002 0000000000000750
GPR08: 0000000000000064 D0000000000D4AE0 D0000000000D5F20 C0000000000201D8
GPR12: D0000000000CB280 C0000000003FCF80 0000000000000000 0000000000000000
GPR16: 0000000000000000 0000000000000000 4000000001400000 C0000000003595E0
GPR20: C0000000003D1F28 00000000017D1A80 C0000000003D1A80 0000000000000060
GPR24: 00000000000003F0 A000000000009032 0000000000000044 00000000000000D9
GPR28: 0000000000000400 0000000000000002 D0000000000DB880 C00000000161D000
NIP [C0000000000201E8] .dma_map_single+0x10/0x70
LR [D0000000000C43A4] .setup_rw_floppy+0x2c0/0xaa8 [floppy]
Call Trace:
[C0000000003DF6F0] [D0000000000C5790] .start_motor+0x108/0x158 [floppy] 
[C0000000003DF760] [D0000000000C43A4] .setup_rw_floppy+0x2c0/0xaa8 [floppy]
[C0000000003DF810] [C000000000044714] .run_timer_softirq+0x174/0x20c
[C0000000003DF8B0] [C00000000003FC68] .__do_softirq+0x80/0x128
[C0000000003DF940] [C00000000003FD5C] .do_softirq+0x4c/0x68
[C0000000003DF9C0] [C00000000001C9E8] .timer_interrupt+0x360/0x388
[C0000000003DFA90] [C0000000000034B8] decrementer_common+0xb8/0x100
--- Exception: 901 at .ppc64_runlatch_off+0x0/0x50
    LR = .default_idle+0x48/0x70
[C0000000003DFD80] [C000000000016764] .default_idle+0x68/0x70 (unreliable)
[C0000000003DFE00] [C0000000000166E8] .cpu_idle+0x40/0x54
[C0000000003DFE70] [C0000000000092B0] .rest_init+0x3c/0x54
[C0000000003DFEF0] [C0000000003B16D4] .start_kernel+0x1f0/0x208
[C0000000003DFF90] [C000000000008514] .start_here_common+0x88/0x174
Instruction dump:
4e800421 e8410028 48000008 0fe00000 38210070 e8010010 7c0803a6 4e800020
7c0802a6 f8010010 f821ff91 e80298d0 <e9230178> 7fa90000 409e000c e92298d8

Am I doing something wrong?


Markus Rothe

P.S.: Please CC me, as I'm not subscribed to the list.

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