[ale] ipmi_si refused to go?

[Jerry Yu]

On a Dell PE6650 server running CentOS 4.1 when I attempted to remove
ipmi_si module, 'modprobe -r' hang and won't take 'CTRL-Z' seriously. I
killed its parent bash session, now init owns it. some old postings
suggested a reboot to fix. Anyone to differ?

# rmmod ipmi_si
ERROR: Removing 'ipmi_si': Device or resource busy
# fuser
/lib/modules/2.6.9-11.ELhugemem/kernel/drivers/char/ipmi/ipmi_si.ko: 25270
# the actual process
root     25270     1 99 13:51 ?        02:57:51 modprobe -r ipmi_si
# lsmod|grep -i ipmi
ipmi_si                32317  0
ipmi_msghandler        33317  1 ipmi_si
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