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Subjectloop & isofs
mounting an iso-image through loop, like

mount -t iso9660 -o loop image /mnt

and then reading from a file leads to this:

Dec 6 14:21:31 main kernel: kernel BUG at buffer.c:827!
Dec 6 14:21:31 main kernel: invalid operand: 0000
Dec 6 14:21:31 main kernel: CPU: 0
Dec 6 14:21:31 main kernel: EIP: 0010:[end_buffer_io_async+191/240]
Dec 6 14:21:31 main kernel: EFLAGS: 00010082
Dec 6 14:21:31 main kernel: eax: 0000001c ebx: c11050c0 ecx:
c02046c8 edx: c560e780
Dec 6 14:21:31 main kernel: esi: c3965440 edi: 00000002 ebp:
c3965488 esp: c37d9de4
Dec 6 14:21:31 main kernel: ds: 0018 es: 0018 ss: 0018
Dec 6 14:21:31 main kernel: Process cat (pid: 390, stackpage=c37d9000)
Dec 6 14:21:31 main kernel: Stack: c01d5065 c01d531a 0000033b c3965440
c6c637c0 00000004 00000001 c0165411
Dec 6 14:21:31 main kernel: c3965440 00000001 c6c637c0 00000000
c6c637c0 c025c4d8 c88238ad c6c637c0
Dec 6 14:21:31 main kernel: 00000001 c8824867 00000007 00000000
00000004 c025c4d8 c025c4e8 c42a1800
Dec 6 14:21:31 main kernel: Call Trace: [tvecs+12701/39704]
[tvecs+13394/39704] [end_that_request_first+97/192]
[floppy:floppy+75097/4773
4583] [floppy:floppy+79123/47730557] [__make_request+1448/1568]
[generic_make_request+256/272]
Dec 6 14:21:31 main kernel: [ll_rw_block+333/448]
[block_read_full_page+425/544] [__alloc_pages+229/736]
[floppy:floppy+90555/4771
9125] [floppy:floppy+89980/47719700] [do_generic_file_read+806/1376]
[generic_file_read+91/128] [file_read_actor+0/96]
Dec 6 14:21:31 main kernel: [sys_read+146/208]
[system_call+51/56]
Dec 6 14:21:31 main kernel: Code: 0f 0b 83 c4 0c 8d 73 28 8d 43 2c 39
43 2c 74 19 b9 01 00 00

This is with linux-2.4.0-test12-pre5.

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