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ATTO bridge reboots due to "Software Interrupt Exception Detected"

Last Updated:


Applies to

  • ONTAP 9
  • MetroCluster FC 
  • ATTO 7500N FibreBridge


  • ATTO bridge reboots unexpectedly. AutoSupport is generated for the same:

HA Group Notification from node1 (Bridge Unexpected Reboot: FB7500XXXXXXX) ALERT

  • Event logs in dumpeventlog all from the bridge or BRIDGE-ALL-EVENT-LOG.TGZ in Autosupport logs shows the following errors:
5C2240 21:07:42 06/15/22 CRIT Software Interrupt Exception Detected (SWI) (001N)
5C2241 21:07:42 06/15/22 CRIT Instr Address    = 000385f0
5C2242 21:07:42 06/15/22 CRIT SWI Number       = 0x000000
5C2243 21:07:42 06/15/22 INFO Software Interrupt
5C2244 21:07:42 06/15/22 INFO 06/15/2022 21:07:42
5C2245 21:07:42 06/15/22 INFO ST[1ba13000-1ba14000] | FP[1ba13b8c] CPSR[60000193]
5C2246 21:07:42 06/15/22 INFO 0014bc7c<-00265578 | SP[1ba13b90] FP[1ba13bfc]
5C2247 21:07:42 06/15/22 INFO 0026544c<-00000584 | SP[1ba13c00] FP[1ba13c44]
5C2248 21:07:42 06/15/22 INFO 001d927c<-00d2844c | SP[1ba13c48] FP[1ba13f74]
5C2249 21:07:42 06/15/22 INFO 00d27f98<-00d0d3d0 | SP[1ba13f78] FP[1ba13fa4]
5C224A 21:07:42 06/15/22 INFO 00d0d33c<-00d13324 | SP[1ba13fa8] FP[1ba13fcc]
5C224B 21:07:42 06/15/22 INFO 00d130d0<-000417dc | SP[1ba13fd0] FP[1ba13ffc]
5C224C 21:07:42 06/15/22 INFO 00041680<-003eb310 | SP[1ba14000] FP[1ba14000]
5C224D 21:07:42 06/15/22 INFO Exception occurred. Possible redundant preceding log entries
5C224E 00:00:05 01/01/00 INFO Reset.  HW Code: Software Warm
5C224F 00:00:05 01/01/00 INFO Reset.  Reason: Critical Software Error Detected

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