v4.0.0 panic: runtime error: invalid memory address or nil pointer dereference [recovered]

[seiya-annie]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

server_configs:
tidb:
alter-primary-key: true
enable-streaming: false
experimental.allow-auto-random: false
experimental.allow-expression-index: true
mem-quota-query: 10
new_collations_enabled_on_first_bootstrap: true
oom-action: cancel
performance.feedback-probability: 0.05
performance.max-memory: 5000000
performance.max-txn-ttl: 600000
performance.query-feedback-limit: 1024
pessimistic-txn.enable: true
store: mocktikv
tikv-client.copr-cache.admission-max-result-mb: 10.0
tikv-client.copr-cache.admission-min-process-ms: 5
tikv-client.copr-cache.enable: false
tikv-client.store-liveness-timeout: 120s

use tiup deploy v4.0.0 version with above config, tidb service can't start.

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

tidb status is up

3. What did you see instead (Required)

panic: runtime error: invalid memory address or nil pointer dereference [recovered]
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x21efabd]

goroutine 1 [running]:
github.com/pingcap/tidb/executor.(*ExecStmt).Exec.func1(0xc000f5b680, 0xc001164960, 0x36c53a0, 0xc000054068)
/home/jenkins/agent/workspace/tidb_v4.0.0/go/src/github.com/pingcap/tidb/executor/adapter.go:292 +0x53a
panic(0x2def7a0, 0x4c7e090)
/usr/local/go/src/runtime/panic.go:679 +0x1b2
github.com/pingcap/tidb/util/expensivequery.(*Handle).LogOnQueryExceedMemQuota(0x0, 0x0)
/home/jenkins/agent/workspace/tidb_v4.0.0/go/src/github.com/pingcap/tidb/util/expensivequery/expensivequery.go:90 +0x4d
github.com/pingcap/tidb/util/memory.(*PanicOnExceed).Action(0xc000fc6860, 0xc0007a00e0)
/home/jenkins/agent/workspace/tidb_v4.0.0/go/src/github.com/pingcap/tidb/util/memory/action.go:94 +0x91
github.com/pingcap/tidb/util/memory.(*Tracker).Consume(0xc0007a01c0, 0xa73)
/home/jenkins/agent/workspace/tidb_v4.0.0/go/src/github.com/pingcap/tidb/util/memory/tracker.go:221 +0x118

4. What is your TiDB version? (Required)

v4.0.0

[djshow832]

When mem-quota-query is 10 and oom-action is cancel, the internal SQL exceeds the memory quota and eqh.sm is not initialized. So it panics.

[seiya-annie]

error info is not clear. please fix error info