Sentry: panic.go:770: runtime error: invalid memory address or nil pointer dereference (1) attached stack trace -- stack trace: | runtime.gopanic | GOROOT/src/runtime/panic.go:770 | runtime.p...

This issue was auto filed by Sentry. It represents a crash or reported error on a live cluster with telemetry enabled.

Sentry Link: [https://cockroach-labs.sentry.io/issues/7007608500/?referrer=webhooks_plugin](https://cockroach-labs.sentry.io/issues/7007608500/?referrer=webhooks_plugin)

Panic Message:

```
panic.go:770: runtime error: invalid memory address or nil pointer dereference
(1) attached stack trace
-- stack trace:
| runtime.gopanic
| GOROOT/src/runtime/panic.go:770
| runtime.panicmem
| GOROOT/src/runtime/panic.go:261
| runtime.sigpanic
| GOROOT/src/runtime/signal_unix.go:881
| github.com/cockroachdb/cockroach/pkg/kv.(*Txn).UserPriority
| pkg/kv/txn.go:362
| github.com/cockroachdb/cockroach/pkg/sql.(*connExecutor).resetTransactionOnSchemaChangeRetry
| pkg/sql/conn_executor_exec.go:1465
| github.com/cockroachdb/cockroach/pkg/sql.(*connExecutor).handleWaitingForConcurrentSchemaChanges
| pkg/sql/conn_executor_ddl.go:123
| github.com/cockroachdb/cockroach/pkg/sql.(*connExecutor).txnStateTransitionsApplyWrapper
| pkg/sql/conn_executor.go:3925
| github.com/cockroachdb/cockroach/pkg/sql.(*connExecutor).execCmd
| pkg/sql/conn_executor.go:2589
| github.com/cockroachdb/cockroach/pkg/sql.(*connExecutor).run
| pkg/sql/conn_executor.go:2263
| github.com/cockroachdb/cockroach/pkg/sql.(*InternalExecutor).runWithEx.func2
| pkg/sql/internal.go:252
| github.com/cockroachdb/cockroach/pkg/util/stop.(*Stopper).RunAsyncTaskEx.func2
| pkg/util/stop/stopper.go:498
| runtime.goexit
| src/runtime/asm_amd64.s:1695
Wraps: (2) runtime error: invalid memory address or nil pointer dereference
Error types: (1) *withstack.withStack (2) runtime.errorString
-- report composition:
runtime.errorString
panic.go:770: *withstack.withStack (top exception)
```

Stacktrace (expand for inline code snippets):

[src/runtime/asm_amd64.s#L1694-L1696](src/runtime/asm_amd64.s#L1694-L1696)
[pkg/util/stop/stopper.go#L497-L499](pkg/util/stop/stopper.go#L497-L499)
[pkg/sql/internal.go#L251-L253](pkg/sql/internal.go#L251-L253)
[pkg/sql/conn_executor.go#L2262-L2264](pkg/sql/conn_executor.go#L2262-L2264)
[pkg/sql/conn_executor.go#L2588-L2590](pkg/sql/conn_executor.go#L2588-L2590)
[pkg/sql/conn_executor.go#L3924-L3926](pkg/sql/conn_executor.go#L3924-L3926)
[pkg/sql/conn_executor_ddl.go#L122-L124](pkg/sql/conn_executor_ddl.go#L122-L124)
[pkg/sql/conn_executor_exec.go#L1464-L1466](pkg/sql/conn_executor_exec.go#L1464-L1466)
[pkg/kv/txn.go#L361-L363](pkg/kv/txn.go#L361-L363)
[GOROOT/src/runtime/signal_unix.go#L880-L882](GOROOT/src/runtime/signal_unix.go#L880-L882)
[GOROOT/src/runtime/panic.go#L260-L262](GOROOT/src/runtime/panic.go#L260-L262)
[GOROOT/src/runtime/panic.go#L769-L771](GOROOT/src/runtime/panic.go#L769-L771)

```
src/runtime/asm_amd64.s in runtime.goexit at line 1695
pkg/util/stop/stopper.go in pkg/util/stop.(*Stopper).RunAsyncTaskEx.func2 at line 498
pkg/sql/internal.go in pkg/sql.(*InternalExecutor).runWithEx.func2 at line 252
pkg/sql/conn_executor.go in pkg/sql.(*connExecutor).run at line 2263
pkg/sql/conn_executor.go in pkg/sql.(*connExecutor).execCmd at line 2589
pkg/sql/conn_executor.go in pkg/sql.(*connExecutor).txnStateTransitionsApplyWrapper at line 3925
pkg/sql/conn_executor_ddl.go in pkg/sql.(*connExecutor).handleWaitingForConcurrentSchemaChanges at line 123
pkg/sql/conn_executor_exec.go in pkg/sql.(*connExecutor).resetTransactionOnSchemaChangeRetry at line 1465
pkg/kv/txn.go in pkg/kv.(*Txn).UserPriority at line 362
GOROOT/src/runtime/signal_unix.go in runtime.sigpanic at line 881
GOROOT/src/runtime/panic.go in runtime.panicmem at line 261
GOROOT/src/runtime/panic.go in runtime.gopanic at line 770
```

### Tags

| Tag | Value |
| --- | --- |
| Command | server |
| Environment | v24.3.0 |
| Go Version | go1.22.8 X:nocoverageredesign |
| Platform | linux amd64 |
| Distribution | CCL |
| Cockroach Release | v24.3.0 |
| Cockroach SHA | ef2ebe96f3a26fd6d6716e2ec4a0c8c6fe0fb567 |
| # of CPUs | 8 |
| # of Goroutines | 509 |

Jira issue: CRDB-56310