Reading Old Version of Privilege File with Newer version of Dolt causes Panic

[jycor]

v0.40.05 includes some changes the reformats privs.json to be in flatbutter format

In newer versions of dolt, there is no error handling for JSON formatter privilege files (old).

Workaround: there's probably a mysql.db file laying around somewhere (if you ran dolt on v0.40.05; if you just rename that to privs.json or change your config to use mysql.db, it'll probably work.

[druvv]

Stack trace for the panic:

panic: runtime error: slice bounds out of range [1934959227:2193]
goroutine 1 [running]:
github.com/google/flatbuffers/go.(*Table).GetSOffsetT(...)
        /go/pkg/mod/github.com/google/flatbuffers@v2.0.6+incompatible/go/table.go:139
github.com/google/flatbuffers/go.(*Table).Offset(0xc0005bac30?, 0xac00?)
        /go/pkg/mod/github.com/google/flatbuffers@v2.0.6+incompatible/go/table.go:15 +0xf0
github.com/dolthub/go-mysql-server/sql/mysql_db/serial.(*MySQLDb).UserLength(0xc00075abd8)
        /go/pkg/mod/github.com/dolthub/go-mysql-server@v0.12.1-0.20220715220455-74cc955d9dfc/sql/mysql_db/serial/mysql_db.go:689 +0x25
github.com/dolthub/go-mysql-server/sql/mysql_db.(*MySQLDb).LoadData(0xc00043fc40, 0xc000050038?, {0xc0002bc000?, 0x0?, 0x4?})
        /go/pkg/mod/github.com/dolthub/go-mysql-server@v0.12.1-0.20220715220455-74cc955d9dfc/sql/mysql_db/mysql_db.go:144 +0xe5
github.com/dolthub/dolt/go/cmd/dolt/commands/engine.NewSqlEngine({0x217c248, 0xc0004c4100}, 0xc0004c5180, 0x0, 0xc00075b498)
        /src/cmd/dolt/commands/engine/sqlengine.go:110 +0x754
github.com/dolthub/dolt/go/cmd/dolt/commands/sqlserver.Serve({0x217c248, 0xc0004c4100}, {0x1dddff5, 0x7}, {0x21980a0, 0xc0007a8700}, 0x1?, 0xc0005bc120)
        /src/cmd/dolt/commands/sqlserver/server.go:143 +0x953
github.com/dolthub/dolt/go/cmd/dolt/commands/sqlserver.startServer({0x217c248, 0xc0004c4100}, {0x1dddff5, 0x7}, {0xc0007049d0, 0xf}, {0xc00004c220, 0x2, 0x2}, 0xc0005bc120, ...)
        /src/cmd/dolt/commands/sqlserver/sqlserver.go:219 +0x5aa
github.com/dolthub/dolt/go/cmd/dolt/commands/sqlserver.SqlServerCmd.Exec({{0x1dddff5?, 0xc0003de240?}}, {0x217d320?, 0xc0000b5580}, {0xc0007049d0, 0xf}, {0xc00004c220, 0x2, 0x2}, 0xc0005bc120)
        /src/cmd/dolt/commands/sqlserver/sqlserver.go:173 +0x285
github.com/dolthub/dolt/go/cmd/dolt/cli.SubCommandHandler.handleCommand({{0x1dd9cd4, 0x4}, {0x1df4c09, 0x11}, {0x0, 0x0}, {0xc000714300, 0x2e, 0x2e}, 0x0}, ...)
        /src/cmd/dolt/cli/command.go:237 +0x502
github.com/dolthub/dolt/go/cmd/dolt/cli.SubCommandHandler.Exec({{0x1dd9cd4, 0x4}, {0x1df4c09, 0x11}, {0x0, 0x0}, {0xc000714300, 0x2e, 0x2e}, 0x0}, ...)
        /src/cmd/dolt/cli/command.go:186 +0x47f
main.runMain()
        /src/cmd/dolt/dolt.go:366 +0x6c5
main.main()
        /src/cmd/dolt/dolt.go:138 +0x19