runtime: "found pointer to free object" on linux-amd64-regabi builder

[bcmills]

2021-03-08T19:07:25-7419a86/linux-amd64-regabi

May be related to #44900.

CC @aclements @dr2chase for regabi. (I'm not sure who else is working on that set of changes..?)

[ianlancetaylor]

Possible the same problem:

2021-04-30T18:05:38-4063605/plan9-arm
2021-04-30T17:48:17-95c5f4d/plan9-arm
2021-04-30T12:03:55-06ac303/plan9-arm
2021-04-28T02:39:09-92d1afe/solaris-amd64-oraclerel
2021-04-27T17:03:53-074a49b/plan9-arm
2021-04-26T21:35:26-be28caf/plan9-arm
2021-04-23T01:16:19-cfac62a/plan9-arm
2021-04-20T16:44:18-109d758/freebsd-amd64-11_2
2021-04-20T16:44:18-109d758/freebsd-amd64-12_0
2021-04-20T16:44:18-109d758/illumos-amd64
2021-04-20T16:44:18-109d758/solaris-amd64-oraclerel
2021-04-16T21:20:31-02a2ff4/plan9-arm
2021-04-13T22:31:20-b4881d9/linux-amd64-noopt
2021-04-13T22:24:31-efaf75a/linux-amd64-noopt
2021-04-13T22:07:10-6938595/linux-amd64-noopt
2021-04-13T22:06:56-f5f7647/linux-amd64-noopt
2021-04-13T21:18:03-9913f82/linux-amd64-noopt
2021-04-06T03:31:26-298975c/plan9-arm
2021-04-05T16:22:17-042f4cb/plan9-arm
2021-04-05T16:22:12-24dd8cf/plan9-arm
2021-04-01T15:50:43-45ca9ef/linux-arm-scaleway
2021-04-01T01:26:29-5f646f0/linux-arm-scaleway
2021-04-01T00:51:26-ec721d9/linux-arm-scaleway
2021-04-01T00:51:24-1f29e69/linux-arm-scaleway
2021-04-01T00:51:23-3304b22/linux-arm-scaleway
2021-03-31T20:21:57-5d6581d/linux-arm-scaleway
2021-03-31T14:10:11-ca3aefc/plan9-arm
2021-03-31T03:51:51-c93cd86/plan9-arm
2021-03-25T19:20:52-ffa9983/solaris-amd64-oraclerel
2021-03-25T02:50:11-a95e2ae/plan9-arm
2021-03-19T19:59:56-3b0d288/plan9-arm
2021-03-17T00:17:33-68f8e1a/plan9-arm

[cherrymui]

2021-04-20T16:44:18-109d758/freebsd-amd64-11_2
2021-04-20T16:44:18-109d758/freebsd-amd64-12_0
2021-04-20T16:44:18-109d758/illumos-amd64
2021-04-20T16:44:18-109d758/solaris-amd64-oraclerel

These are known and fixed (due to inconsistency in enabling regabi).

2021-04-13T22:31:20-b4881d9/linux-amd64-noopt
2021-04-13T22:24:31-efaf75a/linux-amd64-noopt
2021-04-13T22:07:10-6938595/linux-amd64-noopt
2021-04-13T22:06:56-f5f7647/linux-amd64-noopt
2021-04-13T21:18:03-9913f82/linux-amd64-noopt

These are also known and fixed (broken by a CL of mine).

It seems the rest are all ARM or Solaris.

[dmitshur]

Is this issue still actionable for Go 1.17, or is this better covered by other regabi issues, or should we move this to Backlog?

[cherrymui]

A lot has changed for regabi, and the original bad pointer issue is fixed.

There are other failures mentioned above, like the ARM ones and Solaris ones. But they are not regabi related.

[prattmic]

The Solaris failures are tracked by #44902.

The Plan9 failures are tracked by #46822.