kernel trap 19/NMI messages

[Jan L. Nauta]

Hi,

 

SMP FreeBSD 6.2-RELEASE (i386), latest version via freebsd-update, on a
PentiumD based server with two ide drives running under gmirror.

 

Recently I've been getting the following messages in my daily security run
output mails:

 

<SNIP>

+NMI INSAM I IS2A 8, EISA 20

+8,

+<2<>2N>MIN MISI AI SA 38,3 8,E IESAIS A0

+N<MI2 >NIMSIA  ISA 28,2 8EI, SEA I0S

+A 0

+NMI ISA N2M8I,  ISEIA SA 0

+28, EISA 0

+N<MI 2I>SAN MI ISA 38, EIS3A8,  E0I

+S

+A 0

+<2<>N2>NMMII I SAIS A 38, E3I8S, AEI S0A NMI ISA 38, EISA 0 kernel trap 

+19 with interrupts disabled NMI ISA 28, EISA 0 NM<I 2I>NSAM I ISA 28, 

+EISA2 08

</SNIP>

 

Sometimes with message like this embedded:

 

<SNIP>

g_vfs_done():mirror/gm0s1f[READ(offset=356486479872, length=16384)]error = 5

</SNIP>

 

By now the mail is about 40K. Does anybody have an idea what this means and
what's causing it?