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Node goes down with PANIC : process on cpu8 hung

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59
Visibility:
Public
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0
Category:
ontap-9
Specialty:
core
Last Updated:

Applies to

  • ONTAP
  • AFF and FAS systems

Issue

  • In our case the node went down multiple times with different panic messages:
PANIC  : process on cpu8 hung (xor_cp_thread_2) for 5001 milliseconds! in SK process xor_cp_thread_2 on release 9.12.1P4 (C)
PANIC  : thread (NwkThd_03) on cpu 8 hung for 4001 milliseconds in process NwkThd_03 on release 9.12.1P4 (C)
PANIC  : process on cpu8 hung (sd_main) for 5004 milliseconds! in SK process sd_main on release 9.12.1P4 (C)
  • All these 3 panics were happening at these below mentioned functions:
xor_c2_cnt_cksum_sse2
xor_cksum_cnt_sse2
aes_enc_128_sse
  • All these functions were hung on CPU 8.

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