>Number:         29787
>Category:       kern
>Synopsis:       recurrent kernel panics on a i386 router with 2 wm nics
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Mar 24 20:21:00 +0000 2005
>Originator:     kilbi@rad.rwth-aachen.de
>Release:        NetBSD 3.99.1
>Organization:
>Environment:
	
	
System: NetBSD radix 3.99.1 NetBSD 3.99.1 (RADIX) #3: Thu Mar 24 09:02:07 MET 2005  root@lw:/usr/src/sys/arch/i386/compile/RADIX i386
Architecture: i386
Machine: i386
>Description:
	Since at least a week a i386 machine with 2 wm nics

	  wm0 at pci2 dev 10 function 0: Intel i82545EM 1000BASE-T Ethernet, rev. 1
	  wm0: interrupting at ioapic0 pin 22 (irq 5)
	  wm0: 32-bit 33MHz PCI bus
	  wm0: 256 word (8 address bits) MicroWire EEPROM
	  wm0: Ethernet address 00:07:e9:xx:xx:xx
	  makphy0 at wm0 phy 1: Marvell 88E1011 Gigabit PHY, rev. 3
	  makphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 1000baseT-FDX, auto
	  wm1 at pci2 dev 11 function 0: Intel i82545EM 1000BASE-T Ethernet, rev. 1
	  wm1: interrupting at ioapic0 pin 23 (irq 9)
	  wm1: 32-bit 33MHz PCI bus
	  wm1: 256 word (8 address bits) MicroWire EEPROM
	  wm1: Ethernet address 00:07:e9:yy:yy:yy
	  makphy1 at wm1 phy 1: Marvell 88E1011 Gigabit PHY, rev. 3
	  makphy1: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 1000baseT-FDX, auto

	running nearly daily compiled -current kernels and acting as a
	router (incl. ipf) panics recurrently (about 1 - 3 times a
	day) with (different panic messages, sometimes no message):

	    hy0 at wm0 phy 1: Mm == 0, len 1

	or

	    hy0 at wm0 phy 1: Marvell 88E1011 Gigabit PHY, rev

	or

	    panic: m_copym: m == 0, len 1 [!COPYALL]

	or

	    panic: m_copydata: m == 0, len 1

	Sometimes more parts of the nic's boot message are displayed
	before rebooting!?

	Sometimes even 'syncing disks... 2 done' succeeds!

	For me this problem seems to be wm related, because in some
	panic messages 'wm0' appears explicitly. We also have 2 other
	i386 machine acting in a similar environment (routing) with
	other nic's (ex , ti) which do not suffer from this problem.

	Turning on/off hardware checksums does not influence this
	problem.
>How-To-Repeat:
	Setup a i386 machine with 2 wm nics as a router and use it. I
	cannot specify specific network traffic to provoke this
	problem.
>Fix:
	n/a

>Unformatted: