panic when insert values

[3pointer]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

1. create database file_sort;

2. go-ycsb load mysql -P workload -p mysql.host=127.0.0.1 -p mysql.port=4000 -p mysql.db=file_sort;
   workload:

       threadcount=10
       recordcount=15000
       operationcount=0
       workload=core
       readallfields=true
       readproportion=0
       updateproportion=0
       scanproportion=0
       insertproportion=0
       requestdistribution=uniform
   

3. create table file_sort.USERTABLE2 like file_sort.USERTABLE;

4. insert into file_sort.USERTABLE2 select * from file_sort.USERTABLE;

2. What did you expect to see? (Required)

ERROR 1105 (HY000): runtime error: invalid memory address or nil pointer dereference

3. What did you see instead (Required)

insert succeed

4. What is your TiDB version? (Required)

Release Version: v4.0.0-beta.2-973-g67214e763
Edition: Community
Git Commit Hash: 67214e7
Git Branch: master
UTC Build Time: 2020-08-18 11:53:56
GoVersion: go1.13
Race Enabled: false
TiKV Min Version: v3.0.0-60965b006877ca7234adaced7890d7b029ed1306
Check Table Before Drop: false

[amyangfei]

fixed by #19277

[amyangfei]

panic stack

[2020-08-18T13:41:28.408Z] [2020/08/18 21:41:08.492 +08:00] [ERROR] [conn.go:671] ["connection running loop panic"] [conn=44] [lastSQL="insert into file_sort.USERTABLE2 select * from file_sort.USERTABLE"] [err="runtime error: invalid memory address or nil pointer dereference"] [stack="goroutine 139296 [running]:\ngithub.com/pingcap/tidb/server.(*clientConn).Run.func1(0x3b61fe0, 0xc001d04420, 0xc001fbc000)\n\t/home/jenkins/agent/workspace/tidb_master/go/src/github.com/pingcap/tidb/server/conn.go:669 +0xee\npanic(0x31ce540, 0x52c8160)\n\t/usr/local/go/src/runtime/panic.go:679 +0x1b2\ngithub.com/pingcap/tidb/distsql.(*selectResultRuntimeStats).String(0xc002547ec0, 0xc00530b720, 0xd)\n\t/home/jenkins/agent/workspace/tidb_master/go/src/github.com/pingcap/tidb/distsql/select_result.go:397 +0xfc\ngithub.com/pingcap/tidb/planner/core.getRuntimeInfo(0x3ba8de0, 0xc0002c13b0, 0x3b94380, 0xc00166c2a0, 0x0, 0x18, 0x0, 0x0, 0x0, 0x0, ...)\n\t/home/jenkins/agent/workspace/tidb_master/go/src/github.com/pingcap/tidb/planner/core/common_plans.go:1058 +0x40d\ngithub.com/pingcap/tidb/planner/core.(*planEncoder).encodePlan(0xc000cf1890, 0x3b94380, 0xc00166c2a0, 0x3b94301, 0x1)\n\t/home/jenkins/agent/workspace/tidb_master/go/src/github.com/pingcap/tidb/planner/core/encode.go:75 +0xb5\ngithub.com/pingcap/tidb/planner/core.(*planEncoder).encodePlan(0xc000cf1890, 0x3b93580, 0xc001e98000, 0x1, 0x1)\n\t/home/jenkins/agent/workspace/tidb_master/go/src/github.com/pingcap/tidb/planner/core/encode.go:89 +0x938\ngithub.com/pingcap/tidb/planner/core.(*planEncoder).encodePlanTree(0xc000cf1890, 0x3b93580, 0xc001e98000, 0xc00166c2a0, 0x20)\n\t/home/jenkins/agent/workspace/tidb_master/go/src/github.com/pingcap/tidb/planner/core/encode.go:58 +0x82\ngithub.com/pingcap/tidb/planner/core.EncodePlan(0x3b93580, 0xc001e98000, 0x0, 0x0)\n\t/home/jenkins/agent/workspace/tidb_master/go/src/github.com/pingcap/tidb/planner/core/encode.go:52 +0x10e\ngithub.com/pingcap/tidb/executor.(*ExecStmt).SummaryStmt.func1(0xc001c0a281, 0x42)\n\t/home/jenkins/agent/workspace/tidb_master/go/src/github.com/pingcap/tidb/executor/adapter.go:960 +0x37\ngithub.com/pingcap/tidb/util/stmtsummary.newStmtSummaryByDigestElement(0xc0051daac8, 0x5f3bd7d8, 0x708, 0x708)\n\t/home/jenkins/agent/workspace/tidb_master/go/src/github.com/pingcap/tidb/util/stmtsummary/statement_summary.go:578 +0x61\ngithub.com/pingcap/tidb/util/stmtsummary.(*stmtSummaryByDigest).add.func1(0xc005fe9d80, 0xc0051daac8, 0x5f3bd7d8, 0x708, 0x18, 0x0, 0xc005fe9d00)\n\t/home/jenkins/agent/workspace/tidb_master/go/src/github.com/pingcap/tidb/util/stmtsummary/statement_summary.go:496 +0x1c8\ngithub.com/pingcap/tidb/util/stmtsummary.(*stmtSummaryByDigest).add(0xc005fe9d80, 0xc0051daac8, 0x5f3bd7d8, 0x708, 0x18)\n\t/home/jenkins/agent/workspace/tidb_master/go/src/github.com/pingcap/tidb/util/stmtsummary/statement_summary.go:507 +0x53\ngithub.com/pingcap/tidb/util/stmtsummary.(*stmtSummaryByDigestMap).AddStatement(0xc000307e00, 0xc0051daac8)\n\t/home/jenkins/agent/workspace/tidb_master/go/src/github.com/pingcap/tidb/util/stmtsummary/statement_summary.go:266 +0x1be\ngithub.com/pingcap/tidb/executor.(*ExecStmt).SummaryStmt(0xc001808510, 0x5d007354f2c0001)\n\t/home/jenkins/agent/workspace/tidb_master/go/src/github.com/pingcap/tidb/executor/adapter.go:981 +0x696\ngithub.com/pingcap/tidb/executor.(*ExecStmt).FinishExecuteStmt(0xc001808510, 0x5d007354f2c0002, 0xc0002c0001)\n\t/home/jenkins/agent/workspace/tidb_master/go/src/github.com/pingcap/tidb/executor/adapter.go:776 +0x62\ngithub.com/pingcap/tidb/session.runStmt(0x3b61fe0, 0xc001d04f30, 0xc0002c13b0, 0x3b6bee0, 0xc001808510, 0x0, 0x0, 0x0, 0x0)\n\t/home/jenkins/agent/workspace/tidb_master/go/src/github.com/pingcap/tidb/session/session.go:1226 +0x446\ngithub.com/pingcap/tidb/session.(*session).ExecuteStmt(0xc0002c13b0, 0x3b61fe0, 0xc001d04f30, 0x3b6b3e0, 0xc001de8750, 0x0, 0x0, 0x0, 0x0)\n\t/home/jenkins/agent/workspace/tidb_master/go/src/github.com/pingcap/tidb/session/session.go:1162 +0x7bc\ngithub.com/pingcap/tidb/server.(*TiDBContext).ExecuteStmt(0xc001d04780, 0x3b61fe0, 0xc001d04f30, 0x3b6b3e0, 0xc001de8750, 0xc002582090, 0x3b61fe0, 0xc001d04f30, 0xc00169b201)\n\t/home/jenkins/agent/workspace/tidb_master/go/src/github.com/pingcap/tidb/server/driver_tidb.go:198 +0x68\ngithub.com/pingcap/tidb/server.(*clientConn).handleStmt(0xc001fbc000, 0x3b61fe0, 0xc001d04f30, 0x3b6b3e0, 0xc001de8750, 0x5836de8, 0x0, 0x0, 0x1, 0"]

[ghost]

@3pointer It looks like this issue has been fixed in master. Can you confirm?

[fzhedu]

fixed by #19277, so close it.