"panic: trap: fast data access mmu miss" on 5.2-C

Bill Fenner fenner at research.att.com
Thu Feb 12 22:42:16 PST 2004

I just got this panic; unclear if it's related:

#9  0x00000000c013fb5c in __panic (
    file=0xc0357da8 "/usr/src/sys/sparc64/sparc64/trap.c", line=364, 
    fmt=0xc0357e38 "trap: %s") at /usr/src/sys/kern/kern_shutdown.c:536
#10 0x00000000c02a5450 in trap (tf=0xe8ed4f30)
    at /usr/src/sys/sparc64/sparc64/trap.c:364
#11 0x00000000c02a0b64 in pmap_kenter (va=18446735278660185024, m=0x1)
    at /usr/src/sys/sparc64/sparc64/pmap.c:833
#12 0x00000000c02a0a98 in pmap_kenter (va=0, m=0xfffff8003e019638)
    at /usr/src/sys/sparc64/sparc64/pmap.c:812
#13 0x00000000c02a0dd8 in pmap_qenter (sva=0, m=0xe8ed5260, count=15)
    at /usr/src/sys/sparc64/sparc64/pmap.c:933
#14 0x00000000c02a1070 in pmap_pinit (pm=0xfffff800036ebe10)
    at /usr/src/sys/sparc64/sparc64/pmap.c:1022
#15 0x00000000c02752d0 in vmspace_alloc (min=18446735277674118672, 
    max=8787503087616) at /usr/src/sys/vm/vm_map.h:247
#16 0x00000000c027843c in vmspace_fork (vm1=0xfffff8003f89a000)
    at /usr/src/sys/vm/vm_map.c:2361
#17 0x00000000c0273804 in vm_forkproc (td=0xfffff8002ea8cfc0, 
    p2=0xfffff80014ccc2e0, td2=0xfffff80007fed440, flags=20)
    at /usr/src/sys/vm/vm_glue.c:627
#18 0x00000000c012b4ec in fork1 (td=0xfffff8002ea8cfc0, flags=20, pages=8192, 
    procp=0xe8ed56a8) at /usr/src/sys/kern/kern_fork.c:657
#19 0x00000000c012a610 in fork (td=0xfffff8002ea8cfc0, uap=0xe8ed58c0)
    at /usr/src/sys/kern/kern_fork.c:101
#20 0x00000000c02a5a14 in syscall (tf=0xe8ed5880)
    at /usr/src/sys/sparc64/sparc64/trap.c:587
(kgdb) p panicstr
$1 = 0xc03a7148 "trap: fast data access mmu miss"

I don't have the patch from a few days ago applied.


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