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SubjectOops in 2.2.9 (get_unused_buffer_head)
Manually decoded oops. Generated by running bonnie in a partition on
an IDE drive and simultaneously scping files into the same partition
while the NFS daemon serves files out of another partition.

Unable to handle page fault (or similar message) in process bonnie:

EIP
get_unused_buffer_head+18

Stack
create_buffers+66
grow_buffers+85
refill_freelist+10
getblk+286
ext2_alloc_block+109
block_getblk+401
ext2_getblk+367
ext2_file_write+1004
timer_bh+210
update_process_times+91
timer_bh+210
sys_write+220
ext2_file_lseek+128
system_call+52

Code
0x8049440 <force_to_data>: mov 0x1c(%ebx),%ebx
0x8049443 <force_to_data+3>: push %eax
0x8049444 <force_to_data+4>: call 0x80493e2
0x8049449 <force_to_data+9>: add $0x4,%esp
0x804944c <force_to_data+12>: test %ebx,%ebx
0x804944e <force_to_data+14>: jne 0x804943e <completed.3+2>
0x8049450 <force_to_data+16>: mov 0x3f0,%ecx

This (newish IBM 8.4Gb) IDE drive was running with hdparm -c1 -u1 -m8
at the time. Note also that the kernel has hda=16383,16,63 to avoid
losing the last few Mb of the disk.

HTH,
Giuliano.
-- myxie@debian.org

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