runtime/pprof: slice bounds out of range builder failure

[mvdan]

Spotted on a linux-mipsle builder: https://build.golang.org/log/179ddea544b874db48141b2b327310dbab94385e

[odeke-em]

Thank you for the report @mvdan!

/cc @aclements @MIPSbkirby @rsc

[ianlancetaylor]

Unfortunately it looks like crash is in the runtime, and we don't have a stack trace for it.

This is also happening on some ARM systems.

2017-10-09T18:01:14-d402343/linux-mipsle
2017-10-24T07:10:10-744da64/linux-mipsle
2017-11-13T14:54:53-f768693/linux-mipsle
2017-11-16T01:17:13-b9ebc67/linux-mipsle
2017-12-07T01:07:30-617fc0f/linux-mipsle
2018-02-14T15:52:41-cdd9616/linux-mipsle
2018-03-16T20:25:10-b30bf95/linux-mipsle
2018-04-21T20:20:37-20c98dc/linux-mipsle
2018-04-29T15:59:45-9eb4590/linux-mipsle
2018-05-10T15:40:01-ef24fd7/linux-mipsle
2018-06-07T07:00:46-e5f0c1f/darwin-arm64-a1549ios
2018-06-10T05:49:55-a5f8303/freebsd-arm-paulzhol
2018-06-11T06:35:20-679690f/freebsd-arm-paulzhol
2018-06-11T14:47:06-bb222cd/freebsd-arm-paulzhol
2018-06-11T20:58:09-92f8acd/freebsd-arm-paulzhol
2018-06-11T22:09:04-f864d89/netbsd-arm-bsiegert
2018-06-13T17:55:32-a1b85ee/freebsd-arm-paulzhol
2018-06-15T02:07:23-f70d1e7/freebsd-arm-paulzhol
2018-06-16T00:58:45-cdffe9b/netbsd-arm-bsiegert
2018-06-16T13:35:45-b459e00/freebsd-arm-paulzhol
2018-06-18T19:09:37-88b442f/freebsd-arm-paulzhol
2018-06-18T23:20:57-c993002/freebsd-arm-paulzhol
2018-06-18T23:20:57-c993002/netbsd-arm-bsiegert
2018-06-22T13:21:28-b8d4d02/freebsd-arm-paulzhol
2018-06-24T16:01:45-291e57f/freebsd-arm-paulzhol

[gopherbot]

Change https://golang.org/cl/121515 mentions this issue: runtime: throw if the runtime panics

[gopherbot]

Change https://golang.org/cl/184163 mentions this issue: runtime: add debugging print on crash in pprof

[gopherbot]

Change https://golang.org/cl/184164 mentions this issue: runtime: fix pprof cpu profile corruption on arm/mips/mipsle