sparc64/92033: dc(4) issues on Ultra10

Yasholomew Yashinski yashy at
Thu Jan 19 17:10:10 PST 2006

>Number:         92033
>Category:       sparc64
>Synopsis:       dc(4) issues on Ultra10
>Confidential:   no
>Severity:       critical
>Priority:       low
>Responsible:    freebsd-sparc64
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Jan 20 01:10:08 GMT 2006
>Originator:     Yasholomew Yashinski
>Release:        6.0-STABLE sparc64
FreeBSD 6.0-STABLE FreeBSD 6.0-STABLE #0: Sat Jan  7 13:09:36 EST 2006     yashy at  sparc64
dc0: <Macronix 98715/98715A 10/100BaseTX> port 0x400-0x4ff mem 0x1800000-0x18000ff at device 2.0 on pci2
miibus1: <MII bus> on dc0
dcphy0: <Intel 21143 NWAY media interface> on miibus1
dcphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto

Unread portion of the kernel message buffer:
panic: trap: data access error
Uptime: 4m15s
Dumping 512 MB (2 chunks)
  chunk at 0: 268435456 bytes |

#0  doadump () at /usr/src/sys/kern/kern_shutdown.c:233
233             savectx(&dumppcb);
(kgdb) bt
#0  doadump () at /usr/src/sys/kern/kern_shutdown.c:233
#1  0x00000000c011ef68 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:399
#2  0x00000000c011f2f4 in panic (fmt=0xc0303880 "trap: %s") at /usr/src/sys/kern/kern_shutdown.c:555
#3  0x00000000c02c1de4 in trap (tf=0xd1a9b220) at /usr/src/sys/sparc64/sparc64/trap.c:369
#4  0x00000000c0048fc0 in tl1_trap ()
#5  0x00000000c00ac1f4 in dcphy_status (sc=0xfffff800006f1980) at cpufunc.h:104
#6  0x00000000c00ac178 in dcphy_service (sc=0xc00ac1f8, mii=0x0, cmd=0) at /usr/src/sys/dev/mii/dcphy.c:332
#7  0x00000000c00ac178 in dcphy_service (sc=0xfffff800006f1980, mii=0xfffff80000734200, cmd=1) at /usr/src/sys/dev/mii/dcphy.c:332
#8  0x00000000c00af5c4 in mii_tick (mii=0xfffff80000734200) at /usr/src/sys/dev/mii/mii.c:363
#9  0x00000000c0444ab0 in ?? ()
Previous frame identical to this frame (corrupt stack?)
Turn machine on with a call to the card. In this case, I had added
ifconfig_dc0="DHCP" to rc.conf. The crash happens before the card actually gets an IP.

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