Sentry: XA in implicit txn caused panic

Author: cockroach-sentryCreated Jun 5, 2026Updated Sep 17, 2026

LabelsC-bugO-sentryX-blathers-triagedT-sql-queriesbranch-release-25.3v26.4.0-prerelease

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/7529381832/?referrer=webhooks_plugin

Panic Message:

conn_executor.go:1054: ×
(1) attached stack trace
  -- stack trace:
  | github.com/cockroachdb/cockroach/pkg/sql.(*Server).ServeConn.func1
  | 	pkg/sql/conn_executor.go:1054
  | [...repeated from below...]
Wraps: (2) while executing: PREPARE TRANSACTION '_'
Wraps: (3) attached stack trace
  -- stack trace:
  | github.com/cockroachdb/cockroach/pkg/sql.(*Server).ServeConn.func1
  | 	pkg/sql/conn_executor.go:1054
  | runtime.gopanic
  | 	GOROOT/src/runtime/panic.go:791
  | github.com/cockroachdb/cockroach/pkg/sql.(*connExecutor).txnStateTransitionsApplyWrapper
  | 	pkg/sql/conn_executor.go:4046
  | github.com/cockroachdb/cockroach/pkg/sql.(*connExecutor).execCmd
  | 	pkg/sql/conn_executor.go:2617
  | github.com/cockroachdb/cockroach/pkg/sql.(*connExecutor).run
  | 	pkg/sql/conn_executor.go:2278
  | github.com/cockroachdb/cockroach/pkg/sql.(*Server).ServeConn
  | 	pkg/sql/conn_executor.go:1056
  | github.com/cockroachdb/cockroach/pkg/sql/pgwire.(*conn).processCommands
  | 	pkg/sql/pgwire/conn.go:253
  | github.com/cockroachdb/cockroach/pkg/sql/pgwire.(*Server).serveImpl.func4
  | 	pkg/sql/pgwire/server.go:1214
  | runtime.goexit
  | 	src/runtime/asm_arm64.s:1223
Wraps: (4) ×
Error types: (1) *withstack.withStack (2) *safedetails.withSafeDetails (3) *withstack.withStack (4) *fsm.TransitionNotFoundError
-- report composition:
*fsm.TransitionNotFoundError
conn_executor.go:1054: *withstack.withStack (top exception)
*safedetails.withSafeDetails: while executing: PREPARE TRANSACTION '_'
conn_executor.go:1054: *withstack.withStack (1)
(check the extra data payloads)

Stacktrace (expand for inline code snippets):

src/runtime/asm_arm64.s#L1222-L1224 pkg/sql/pgwire/server.go#L1213-L1215 pkg/sql/pgwire/conn.go#L252-L254 pkg/sql/conn_executor.go#L1055-L1057 pkg/sql/conn_executor.go#L2277-L2279 pkg/sql/conn_executor.go#L2616-L2618 pkg/sql/conn_executor.go#L4045-L4047 GOROOT/src/runtime/panic.go#L790-L792 pkg/sql/conn_executor.go#L1053-L1055

src/runtime/asm_arm64.s in runtime.goexit at line 1223
pkg/sql/pgwire/server.go in pkg/sql/pgwire.(*Server).serveImpl.func4 at line 1214
pkg/sql/pgwire/conn.go in pkg/sql/pgwire.(*conn).processCommands at line 253
pkg/sql/conn_executor.go in pkg/sql.(*Server).ServeConn at line 1056
pkg/sql/conn_executor.go in pkg/sql.(*connExecutor).run at line 2278
pkg/sql/conn_executor.go in pkg/sql.(*connExecutor).execCmd at line 2617
pkg/sql/conn_executor.go in pkg/sql.(*connExecutor).txnStateTransitionsApplyWrapper at line 4046
GOROOT/src/runtime/panic.go in runtime.gopanic at line 791
pkg/sql/conn_executor.go in pkg/sql.(*Server).ServeConn.func1 at line 1054

Tag	Value
Command	start-single-node
Environment	v25.3.0
Go Version	go1.23.7 X:nocoverageredesign
Platform	linux arm64
Distribution	CCL
Cockroach Release	v25.3.0
Cockroach SHA	cb540b101146345c1df9f265f65ea321c62b10b3
# of CPUs	1
# of Goroutines	385

Sentry: XA in implicit txn caused panic

Tags