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Beginner

unexpected reload in ASR 9K

Hi,

Suddenly one of my router(ASR 9K) was went down and came up. after that i have referred the log and it says that router got crashed due to the kernal crash.

can anyone help me that what could be the problem for kernal crash.

LOG File:

================================================================

Crashinfo Timestamp: Thu Jan 1 05:34:55 1970


1970-01-01 00:04:55.148
Crash Reason: Kernel Crash

Exception at 0xffc00900 signal 11 c=1 f=11

Active process(s):
proc/boot/procnto-booke-smp-instr Thread ID 0 on cpu 0
proc/boot/procnto-booke-smp-instr Thread ID 1 on cpu 1
proc/boot/procnto-booke-smp-instr Thread ID 11 on cpu 2
proc/boot/procnto-booke-smp-instr Thread ID 3 on cpu 3

REGISTER INFO
r0 r1 r2 r3
R0 0000001c 0ffe0fc0 00bb9614 00000008
r4 r5 r6 r7
R4 00000000 04020000 04020000 ffc00900
r8 r9 r10 r11
R8 0001000c 0000c430 00bb0190 00000000
r12 r13 r14 r15
R12 00000000 00bb9604 00000000 00000000
r16 r17 r18 r19
R16 00000000 00000000 00000000 00000000
r20 r21 r22 r23
R20 00000000 00000000 00000000 00bb2170
r24 r25 r26 r27
R24 00029000 00000000 00000034 00029034
r28 r29 r30 r31
R28 00000000 00000000 0fff8a24 0fff8730
cnt lr msr pc
R32 0000c430 ffc00900 00029034 ffc00900
cnd xer
R36 44000042 00000000

STACK TRACE
#0 0xffc00900

1 ACCEPTED SOLUTION

Accepted Solutions
Highlighted

basically the legs underneath the body got ripped with this kernel crash and the signal cause is pretty generic then with this:

Exception at 0xffc00900 signal 11 c=1 f=11

Active process(s):
proc/boot/procnto-booke-smp-instr Thread ID 0 on cpu 0
proc/boot/procnto-booke-smp-instr Thread ID 1 on cpu 1
proc/boot/procnto-booke-smp-instr Thread ID 11 on cpu 2
proc/boot/procnto-booke-smp-instr Thread ID 3 on cpu 3

if there is no kernel dump on the disk, we would need to setup an external tftp server to get a dump so we can investigate.

right now I can only theorize, since the sw version in use is not mentioned, but we have had silent reloads in 434 and early 51 releases.

possible reasons could be nvram corruption, disk file descriptor depletion, and basically anything that qnx handles in that regard.

if you are not on 534, it might be a good idea to exclude: 

CSCud23309,
CSCup22228
xander

View solution in original post

3 REPLIES 3
Highlighted
Cisco Employee

Hi,

Is this a 9001 ? there was a software defect that could cause this issue on older code.

To move forward it would be better to open a tac case so the core file from the kernel crash could be analyzed.

Thanks

Highlighted

Hi Tkarnani,

           Yes It's ASR 9001. 

Highlighted

basically the legs underneath the body got ripped with this kernel crash and the signal cause is pretty generic then with this:

Exception at 0xffc00900 signal 11 c=1 f=11

Active process(s):
proc/boot/procnto-booke-smp-instr Thread ID 0 on cpu 0
proc/boot/procnto-booke-smp-instr Thread ID 1 on cpu 1
proc/boot/procnto-booke-smp-instr Thread ID 11 on cpu 2
proc/boot/procnto-booke-smp-instr Thread ID 3 on cpu 3

if there is no kernel dump on the disk, we would need to setup an external tftp server to get a dump so we can investigate.

right now I can only theorize, since the sw version in use is not mentioned, but we have had silent reloads in 434 and early 51 releases.

possible reasons could be nvram corruption, disk file descriptor depletion, and basically anything that qnx handles in that regard.

if you are not on 534, it might be a good idea to exclude: 

CSCud23309,
CSCup22228
xander

View solution in original post

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