Null pointer dereference panic at __qdisc_run

Issue

• Server reboots repeatedly with kernel panic as follows:

BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<(null)>] (null)

Pid: 0, comm: swapper Not tainted 2.6.32-504.16.2.el6.x86_64 #1 HP ProLiant DL380p Gen8
RIP: 0010:[<0000000000000000>]  [<(null)>] (null)

Call Trace:
 <IRQ> 
 [<ffffffff8147ebaf>] ? __qdisc_run+0x3f/0xe0
 [<ffffffff81459e10>] net_tx_action+0x130/0x1c0
 [<ffffffff8107d8e1>] __do_softirq+0xc1/0x1e0
 [<ffffffff810b03fa>] ? tick_program_event+0x2a/0x30
 [<ffffffff8100c30c>] call_softirq+0x1c/0x30
 [<ffffffff8100fb55>] do_softirq+0x65/0xa0

Code:  Bad RIP value.
RIP  [<(null)>] (null)