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Community Member

%ALIGN-1-FATAL: Illegal access to a low address

hy,

i have upgraded my router (7206vxr) to 12.2(4)t3 (i needed it for ipv6)

afer 30-60 seconds the router will crash with the following message :

%ALIGN-1-FATAL: Illegal access to a low address

addr=0x3BC, pc=0x6052B860, ra=0x6052B740, sp=0x6217C300

Unexpected exception, CPU signal 10, PC = 0x6052B860

$0 : 00000000, AT : 00FFFF81, v0 : 000003BC, v1 : 00000000

a0 : 6200C8D8, a1 : 6200C8D8, a2 : 00000000, a3 : 000005EC

t0 : 000096D9, t1 : 000005D4, t2 : 61ED0000, t3 : 00000005

t4 : 00000001, t5 : 00000000, t6 : 00000003, t7 : 00000002

s0 : 6200DB84, s1 : 00000000, s2 : 00000000, s3 : 6242D86C

s4 : 00000002, s5 : 6242D86C, s6 : 201D3EB8, s7 : 6235B660

t8 : 606B9B7C, t9 : 00000000, k0 : 63386898, k1 : 606BFA30

gp : 61CFAD80, sp : 6217C300, s8 : 00000000, ra : 6052B740

EPC : 6052B860, ErrorEPC : FBBEFFAF, SREG : 3400E103

Cause 00000008 (Code 0x2): TLB (load or instruction fetch) exception

-Traceback= 6052B860 604B08BC 604B2460 604B2940 604B2A08 606AFD4C 6065A948 6068FBC4 6068FBB0

on other routers, the same ios runns "perfektly"

i have pulled the pa's and tried to boot again, but the router crashes

continiously :(

sh context :

Fault History Buffer:

7200 Software (C7200-P-M), Version 12.2(4)T3, RELEASE SOFTWARE (fc3)

TAC Support: http://www.cisco.com/tac

Compiled Sun 10-Feb-02 05:30 by ccai

Signal = 10, Code = 0x408, Uptime 00:00:59

$0 : 00000000, AT : 00FFFF84, v0 : 000003BC, v1 : 00000000

a0 : 6200C8D8, a1 : 6200C8D8, a2 : 00000000, a3 : 000005EC

t0 : 000096D9, t1 : 000005D4, t2 : 61ED0000, t3 : 00000005

t4 : 00000001, t5 : 00000000, t6 : 00000003, t7 : 63042BFC

s0 : 6200DB84, s1 : 00000000, s2 : 00000000, s3 : 624100C0

s4 : 00000002, s5 : 624100C0, s6 : 201D00D8, s7 : 6233F7E0

t8 : 606B9B7C, t9 : FFFFFFFF, k0 : 63785580, k1 : 606BFA30

gp : 61CFAD80, sp : 6217C300, s8 : 00000000, ra : 6052B740

EPC : 6052B860, SREG : 3400E103, Cause : 00000408

any ideas ?

thanks for your help

1 REPLY
Community Member

Re: %ALIGN-1-FATAL: Illegal access to a low address

Hi,

i think the only thing you can do is to open a cas on tac.

Because this router tries to access a illegal address it sounds perfectly like

a bug.

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