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Published 20 hours ago • verified publisher icon iamseth

Race condition

Open valrusu opened this issue 8 months ago • 0 comments

https://github.com/iamseth/oracledb_exporter/blame/29c8869cf60dc5b318236000f09fb69e92846620/collector/collector.go#L316

There is a race condition here, all the goroutines started using function f reference directly the err variable. When more than one change it at the same or close times, you get:

panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x18 pc=0x9f2229]

goroutine 176881 [running]: github.com/iamseth/oracledb_exporter/collector.(*Exporter).scrape.func2() .../oracledb_exporter/collector/collector.go:316 +0x13e9 created by github.com/iamseth/oracledb_exporter/collector.(*Exporter).scrape in goroutine 176838 .../oracledb_exporter/collector/collector.go:322 +0x776

valrusu avatar Jun 28 '24 00:06 valrusu