Hi,
I can reproduce it easily,
The panic message and backtrace is:
panic: m_copym, offset > size of mbuf chain
cpuid = 1
KDB: enter: panic
[thread 100025]
Stopped at kdb_enter+0x2f: nop
db> trace
kdb_enter() at kdb_enter+0x2f
panic() at panic+0x249
m_copym() at m_copym+0x1b1
tcp_output() at tcp_output+0xce8
tcp_input() at tcp_input+0x2d95
ip_input() at ip_input+0x10f
netisr_processqueue() at netisr_processqueue+0x17
swi_net() at swi_net+0x116
ithread_loop() at ithread_loop+0xd9
fork_exit() at fork_exit+0xc3
fork_trampoline() at fork_trampoline+0xe
--- trap 0, rip = 0, rsp = 0xffffffffb19bad00, rbp = 0 ---
I was able to collect a coredump, if it helps, I can make it available
to interrested parties along with kernel.debug.
The machine is 2 processor SunFire V20z, debug.mpsafenet is 0.
TIA, /S
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