panic: m_prepend: MH_ALIGN not PKTHDR mbuf

[Peter Holm]

In GENERIC HEAD from Mar 25 12:55 UTC I got this panic:

panic: m_prepend: MH_ALIGN not PKTHDR mbuf
cpuid = 0
KDB: enter: panic
[thread pid 1118 tid 100169 ]
Stopped at      kdb_enter+0x2b: nop
db> where
Tracing pid 1118 tid 100169 td 0xc2783510
kdb_enter(c089bf32) at kdb_enter+0x2b
panic(c08a2d42,c0851313,0,e,0) at panic+0x14b
m_prepend(c23c4c00,c,2,c23c4c00,0) at m_prepend+0xae
sendit(c2783510,d937a968,cd43bc5c,7ba38d14,...) at sendit+0x107
osendmsg(c2783510,cd43bd04,c2783510,cd43bca8,...) at
osendmsg+0x5a
syscall(2805003b,bfbf003b,bfbf003b,2805188c,...) at syscall+0x27e

More info at http://people.freebsd.org/~pho/stress/log/cons196.html
-- 
Peter Holm