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Cisco Bug: CSCvh91581 - Iftask NPU utilization bug fixes

Last Modified

Nov 27, 2018

Products (2)

  • Cisco ASR 5000 Series
  • Cisco ASR 5500

Known Affected Releases

21.6.1.68727 21.6.10 21.7.0 21.9.0

Description (partial)

Symptom:
Both card NPU is 100%.

04/0/14     31%    30%    25%
05/0/01     23%   100%   100%
05/0/02     24%   100%   100%
05/0/03     35%   100%   100%
05/0/04     25%   100%   100%
05/0/05     58%   100%   100%
05/0/06     41%   100%   100%
05/0/07     48%   100%   100%
05/0/08     10%   100%   100%
05/0/09      7%   100%   100%
05/0/10     14%   100%   100%
05/0/11     20%   100%   100%
05/0/12     47%   100%   100%
05/0/13     48%   100%   100%
05/0/14     49%   100%   100%
06/0/01    100%   100%   100%
06/0/02    100%   100%   100%
06/0/03    100%   100%   100%
06/0/04    100%   100%   100%
06/0/05    100%   100%   100%
06/0/06    100%   100%   100%
06/0/07    100%   100%   100%
06/0/08    100%   100%   100%
06/0/09    100%   100%   100%
06/0/10    100%   100%   100%
06/0/11    100%   100%   100%
06/0/12    100%   100%   100%
06/0/13    100%   100%   100%
06/0/14    100%   100%   100%

Conditions:
Description: Saturday February 03 02:27:03 IST 2018
********************* CRASH #06 ***********************
SW Version          : 21.6.1
Similar Crash Count : 21
Time of First Crash : 2018-Feb-02+12:52:15

Fatal Signal 11: Segmentation fault
  Faulty address: (nil)
  Signal from: kernel
  Process: card=5 cpu=0 arch=X pid=6534 argv0=iftask
  Crash time: 2698-Aug-08+04:14:42 UTC
  Build_number:
  Local Backtrace:
-->     [iftask(iftask_sigusr1_signal_handler+0x31c) [0x4875bc]]
        [/lib64/libpthread.so.0(+0xfb50) [0x7fb7e52e1b50]]
        [iftask(generic_rx_func+0x30b) [0x493dcb]]
        [iftask() [0x499699]]
        [iftask(eal_thread_loop+0x198) [0x590318]]
        [/lib64/libpthread.so.0(+0x7f9b) [0x7fb7e52d9f9b]]
        [/lib64/libc.so.6(clone+0x6d) [0x7fb7e5012b9d]]
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