This message showed up when running lilo on an ext2 image, mounted via
a loopback mount. Line 827 in fs/buffer.c is a call to UnlockPage().
The complete message from /var/log/messages:
Dec 9 18:24:51 tampere kernel: kernel BUG at buffer.c:827!
Dec 9 18:24:51 tampere kernel: invalid operand: 0000
Dec 9 18:24:51 tampere kernel: CPU: 0
Dec 9 18:24:51 tampere kernel: EIP: 0010:[end_buffer_io_async+195/240]
Dec 9 18:24:51 tampere kernel: EFLAGS: 00010086
Dec 9 18:24:51 tampere kernel: eax: 0000001c ebx: c00142bc ecx: 00000000 edx: 00000006
Dec 9 18:24:51 tampere kernel: esi: c0597c20 edi: 00000002 ebp: c0597c68 esp: c0499da0
Dec 9 18:24:51 tampere kernel: ds: 0018 es: 0018 ss: 0018
Dec 9 18:24:51 tampere kernel: Process lilo (pid: 3676, stackpage=c0499000)
Dec 9 18:24:51 tampere kernel: Stack: c0230d89 c023105a 0000033b c0597c20 c0089620 00000002 00000001 c018b115
Dec 9 18:24:51 tampere kernel: c0597c20 00000001 c0089620 c0088260 c0089620 c0089620 c018c1c1 c0089620
Dec 9 18:24:51 tampere kernel: 00000001 c024710b c0089620 00000007 c0089620 c02b99d8 00000000 00000700
Dec 9 18:24:52 tampere kernel: Call Trace: [tvecs+12861/115968] [tvecs+13582/115968] [end_that_request_first+101/192] [do_lo_request+993/1072] [tvecs+103871/115968] [__make_request+1597/1712] [generic_make_request+188/288]
Dec 9 18:24:52 tampere kernel: [ll_rw_block+371/496] [block_read_full_page+541/656] [ext2_readpage+15/32] [ext2_get_block+0/1344] [do_generic_file_read+931/1504] [generic_file_read+99/128] [file_read_actor+0/112] [sys_read+142/208]
Dec 9 18:24:52 tampere kernel: [system_call+51/64]
Dec 9 18:24:52 tampere kernel: Code: 0f 0b 83 c4 0c 8d 73 28 8d 43 2c 39 43 2c 74 15 b9 01 00 00
I cannot reproduce it reliably, but after a few retries, it occured again.
--
Dick Streefland //// De Bilt
[email protected] (@ @) The Netherlands
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