A kernel panic occurs when the bonding module is unloaded after bringing down the bonding device.

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Environment

SUSE Linux Enterprise Server 10 Service Pack 3

Situation

When using tlb or alb bonding modes, a kernel panic occurs when the bonding module is unloaded ("rmmod bonding") after bringing down the bonding device ("ifconfig bond0 down").

Steps to Reproduce

1. modprobe bonding mode=balance-tlb miimon=100
2. ifconfig bond0 172.16.64.168 netmask 255.255.192.0
3. ifenslave bond0 eth0
4. ifenslave bond0 eth1
5. echo hello | nc6 172.16.64.92 100
6. ifconfig bond0 down
7. rmmod bonding

Resolution

Use an updated bonding driver.

Disclaimer

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