Eines schoenen Tages schrieb Oliver Schonefeld:
> > It is not dead card, it is broken TCP, see my similar report in -current, I 
> > notice it several hours ago right after TCP changes was commited.
> Same thing here, but the problems have gone to -stabe too. due to a probable
> tcp breakage i downgraded my machine to 4.0-stable which worked pretty good.
> with sources as from may 5th kernel boots fine, but tcp seems broken too. I
> experience a 50% package loss on out home lan. udp seems broken badly. rpc
> calls and nfs stopped working.
> i am using the vx driver on a 3com 3c597 EISA board. network card is ok,
> packet filtering rules have not been altered since the last kernel version.
> is nobody else seeing this? any clues?

kind of looks like a problem in the delayed checksum calculation.
while having a cvsup running and doing some nfs testing with a linux box
pinging killed the -stable machine. (no flood pinging, just a normal ping)
also nfs to the linux box was just beyond beeing awefully slow ...
not even creeping is the reight term.

kernel output from crash:
delayed m_pullup, m->len: 84  off: 61420  p: 1

Fatal trap 12: page fault while in kernel mode
fault virtual address   = 0x8
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc0197f14
stack pointer           = 0x10:0xc8934e34
frame pointer           = 0x10:0xc8934e60
code segemnt            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current procress        = 213 (dnetc)
interrupt mask          =
kernel: type 12, code=0
db> trace
ip_output(c0661e00,c8934ef4,c0661e00,c0661e4a,7) at ip_output+0xba0
ip_output(c0661e00,0,c8934ef4,14,0,0) at ip_output+0x5fb
icmp_input(c0661e00,0) at icmp_input+0x716
icmp_input(c0661e00,c0661e00,fbdd809a,ffff0000,40) at icmp_input+0x697
icmp_input(c0661e00,14,1,c0661e00,fbdd809a) at icmp_input+0x357
ip_input(c0661e00) at ip_input+0x780
ip_input(c01d7beb,0,2f,2f,2f) at ip_input+0x7df

crashdump availabale on request.

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