General

RP/0/RP0/CPU0:Dec 24 21:17:52.623 CET: dumper[60]: %OS-DUMPER-7-DUMP_REQUEST : Dump request for process mibd_interface RP/0/RP0/CPU0:Dec 24 21:17:52.634 CET: dumper[60]: %OS-DUMPER-7-DUMP_ATTRIBUTE : Dump request with attribute 7 for process mibd_interface RP/0/RP0/CPU0:Dec 24 21:17:52.635 CET: dumper[60]: %OS-DUMPER-4-SIGSEGV : Thread 4 received SIGSEGV - Segmentation Fault RP/0/RP0/CPU0:Dec 24 21:17:52.635 CET: dumper[60]: %OS-DUMPER-4-SIGSEGV_INFO : Accessed BadAddr 0x0 at PC 0x4bb22eec. Signal code 1 - SEGV_MAPPER. Address not mapped. RP/0/RP0/CPU0:Dec 24 21:17:52.635 CET: dumper[60]: %OS-DUMPER-4-CRASH_INFO : Crashed pid = 1163571 (mibd_interface)

Symptom

mibd_interface process on the RP crashes during snmp polling RP/0/RP0/CPU0:Dec 24 21:17:52.623 CET: dumper[60]: %OS-DUMPER-7-DUMP_REQUEST : Dump request for process mibd_interface RP/0/RP0/CPU0:Dec 24 21:17:52.634 CET: dumper[60]: %OS-DUMPER-7-DUMP_ATTRIBUTE : Dump request with attribute 7 for process mibd_interface RP/0/RP0/CPU0:Dec 24 21:17:52.635 CET: dumper[60]: %OS-DUMPER-4-SIGSEGV : Thread 4 received SIGSEGV - Segmentation Fault RP/0/RP0/CPU0:Dec 24 21:17:52.635 CET: dumper[60]: %OS-DUMPER-4-SIGSEGV_INFO : Accessed BadAddr 0x0 at PC 0x4bb22eec. Signal code 1 - SEGV_MAPPER. Address not mapped. RP/0/RP0/CPU0:Dec 24 21:17:52.635 CET: dumper[60]: %OS-DUMPER-4-CRASH_INFO : Crashed pid = 1163571 (mibd_interface)

Conditions

All platform with qos mib cache feature enabled (RP/0/0/CPU0:ios(config)#snmp mibs cbqosmib cache)

Workaround

It's a rare timing issue. After crash, the process will be recovered (restarted) automatically.

Further Problem Description