df4079: dispatching the stack offset-walker m_copydata(m, off=2056, 8) -- off is within pkthdr.len but beyond the chain's real 2048 bytes (sys/kern/uipc_mbuf.c:1671)
panic: m_copydata: offset > size of mbuf chain
cpuid = 5
Trace beginning at frame 0xfffff801182e3628
m_copydata() at m_copydata+0x6e 0xffffffff806be34e 
m_copydata() at m_copydata+0x6e 0xffffffff806be34e 
df4079_input() at df4079_input+0x129 0xffffffff82600179 
oce_rx.isra.10() at oce_rx.isra.10+0x287 0xffffffff805c7997 
oce_rq_handler() at oce_rq_handler+0xbf 0xffffffff805c9f0f 
df4079_sysctl_go() at df4079_sysctl_go+0x597 0xffffffff82600727 
Debugger("panic")