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ASM Reports ORA-07445: exception encountered: core dump [kghfnd()+68] (Doc ID 2588768.1)

Last updated on MAY 25, 2021

Applies to:

Oracle Database - Enterprise Edition - Version 18.1.0.0.0 to 18.5.0.0.0 [Release 18]
Information in this document applies to any platform.

Symptoms

Following ORA-07445 message report in ASM alert log.

alert_+ASM1.log inside <ORACLE_BASE>/diag/asm/+asm/+ASM1/trace location:

 

2018-01-16T05:16:46.861171-08:00
Exception [type: SIGSEGV, Address not mapped to object] [ADDR:0x327CFB5040][PC:0x1174F664, kghfnd()+68] [flags: 0x0, count: 1]
Errors in file <ORACLE_BASE>/diag/asm/+asm/+ASM1/trace/+ASM1_gcr0_26330.trc  (incident=3549245):
ORA-07445: exception encountered: core dump [kghfnd()+68] [SIGSEGV][ADDR:0x327CFB5040] [PC:0x1174F664] [Address not mapped to object] []
Incident details in: <ORACLE_BASE>/diag/asm/+asm/+ASM1/incident/incdir_3549245/+ASM1_gcr0_26330_i3549245.trc
Use ADRCI or Support Workbench to package the incident.



Incident trace indicates Overrun of chunk with allocation comment "kjgcr_Watcher : GCR diskstat array" and having following stack

<ORACLE_BASE>/diag/asm/+asm/+ASM1/incident/incdir_3549245/+ASM1_gcr0_26330_i3549245.trc

----- Incident Context Dump -----
Address: 0x7f8c7e6e8648
Incident ID: 3549245
Problem Key: ORA 7445 [kghfnd]
Error: ORA-7445 [kghfnd] [SIGSEGV] [ADDR:0x327CFB5040] [PC:0x1174F664]
[Address not mapped to object] [] [] [] [] [] [] []
[00]: dbgexPopulateIncCtx [diag_dde]<-- Signaling
[01]: dbgexExplicitEndInc [diag_dde]
[02]: dbgeEndDDEInvocationImpl [diag_dde]
[03]: ssexhd []
.
[37]: kpurcsc [PROGINT]
[38]: kpufch0 [PROGINT]
[39]: kpufch [PROGINT]
[40]: kjgcr_GetDiskIoStat [] <<---------------
[41]: kjgcr_Disk_Iostat_Collector []
[42]: kjgcr_Watcher []
[43]: kjgcr_SlaveActionCbk []
[44]: ksvrdp_int [ksv_trace]
[45]: opirip [OPI]
[46]: opidrv [OPI] 

Cause

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In this Document
Symptoms
Cause
Solution

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