panic on staging: runtime error: slice bounds out of range [:-1]

[lidel]

Happened twice, around boxo/gateway/blocks_gateway.go → getPathRoots → pathRoots[:len(pathRoots)-1]

2023/04/05 21:20:56 Starting bifrost-gateway 2023-04-05-d8d2849
...
2023-04-06T02:07:08.766Z	ERROR	core/server	gateway/handler.go:315	A panic occurred in the gateway handler!
2023-04-06T02:07:08.766Z	ERROR	core/server	gateway/handler.go:316	runtime error: slice bounds out of range [:-1]
...
2023-04-06T02:07:08.799Z	ERROR	core/server	gateway/handler.go:315	A panic occurred in the gateway handler!
2023-04-06T02:07:08.800Z	ERROR	core/server	gateway/handler.go:316	runtime error: slice bounds out of range [:-1]
goroutine 8209872 [running]:
runtime/debug.Stack()
	/usr/local/go/src/runtime/debug/stack.go:24 +0x65
runtime/debug.PrintStack()
	/usr/local/go/src/runtime/debug/stack.go:16 +0x19
github.com/ipfs/boxo/gateway.panicHandler({0x123d680, 0xc1cb717680})
	/go/pkg/mod/github.com/ipfs/boxo@v0.8.1-0.20230405204336-6e1d7a4d43f7/gateway/handler.go:317 +0xfc
panic({0xdfa960, 0xc148178b40})
	/usr/local/go/src/runtime/panic.go:884 +0x213
github.com/ipfs/boxo/gateway.(*BlocksGateway).getPathRoots(0x0?, {0x123da38, 0xc1afb4d890}, {{0x123dc68?, 0xc247a56a10?}})
	/go/pkg/mod/github.com/ipfs/boxo@v0.8.1-0.20230405204336-6e1d7a4d43f7/gateway/blocks_gateway.go:325 +0x5c6
github.com/ipfs/boxo/gateway.(*BlocksGateway).getNode(0xc204cf1e00, {0x123da38, 0xc1afb4d890}, {{0x123dc68?, 0xc247a56a10?}})
	/go/pkg/mod/github.com/ipfs/boxo@v0.8.1-0.20230405204336-6e1d7a4d43f7/gateway/blocks_gateway.go:261 +0x6b
github.com/ipfs/boxo/gateway.(*BlocksGateway).Get(0xc204cf1e00, {0x123da38, 0xc1afb4d890}, {{0x123dc68?, 0xc247a56a10?}}, {0xd09fe0?, 0x1231950?, 0xe1ede0?})
	/go/pkg/mod/github.com/ipfs/boxo@v0.8.1-0.20230405204336-6e1d7a4d43f7/gateway/blocks_gateway.go:143 +0x7a
github.com/ipfs/bifrost-gateway/lib.(*GraphGateway).Get(0xc000184d80, {0x123da38, 0xc1afb4d890}, {{0x123dc68?, 0xc247a56a10?}}, {0xc247a56ad0, 0x1, 0x1})
	/go/src/github.com/ipfs/bifrost-gateway/lib/graph_gateway.go:366 +0x5e5
github.com/ipfs/boxo/gateway.(*ipfsBackendWithMetrics).Get(0xc000129a28, {0x123da38, 0xc1afb4d860}, {{0x123dc68?, 0xc247a56a10?}}, {0xc247a56ad0, 0x1, 0x1})
	/go/pkg/mod/github.com/ipfs/boxo@v0.8.1-0.20230405204336-6e1d7a4d43f7/gateway/metrics.go:69 +0x4b7
github.com/ipfs/boxo/gateway.(*handler).serveDefaults(0xc00087ecc0, {0x123da38, 0xc1afb4d3b0}, {0x123d680, 0xc1cb717680}, 0xc013ae50b0, {{0x123dc68?, 0xc247a56a10?}}, {{0x123dc68, 0xc247a56a10}}, ...)
	/go/pkg/mod/github.com/ipfs/boxo@v0.8.1-0.20230405204336-6e1d7a4d43f7/gateway/handler_defaults.go:68 +0x469
github.com/ipfs/boxo/gateway.(*handler).getOrHeadHandler(0xc00087ecc0, {0x123d680, 0xc1cb717680}, 0xc013ae52d0)
	/go/pkg/mod/github.com/ipfs/boxo@v0.8.1-0.20230405204336-6e1d7a4d43f7/gateway/handler.go:281 +0xc34
github.com/ipfs/boxo/gateway.(*handler).ServeHTTP(0xc00087ecc0, {0x123d680, 0xc1cb717680}, 0xc1824ad500)
	/go/pkg/mod/github.com/ipfs/boxo@v0.8.1-0.20230405204336-6e1d7a4d43f7/gateway/handler.go:163 +0x234
net/http.(*ServeMux).ServeHTTP(0xc013ae5480?, {0x123d680, 0xc1cb717680}, 0xc1824ad500)
	/usr/local/go/src/net/http/server.go:2500 +0x149
main.withConnect.func1({0x123d680?, 0xc1cb717680?}, 0xc0e2e1be20?)
	/go/src/github.com/ipfs/bifrost-gateway/handlers.go:57 +0x73
net/http.HandlerFunc.ServeHTTP(0x123da38?, {0x123d680?, 0xc1cb717680?}, 0xc000184d80?)
	/usr/local/go/src/net/http/server.go:2122 +0x2f
github.com/ipfs/boxo/gateway.WithHostname.func1({0x123d680, 0xc1cb717680}, 0xc1824ad500)
	/go/pkg/mod/github.com/ipfs/boxo@v0.8.1-0.20230405204336-6e1d7a4d43f7/gateway/hostname.go:241 +0x4e2
net/http.HandlerFunc.ServeHTTP(0x0?, {0x123d680?, 0xc1cb717680?}, 0x0?)
	/usr/local/go/src/net/http/server.go:2122 +0x2f
github.com/mitchellh/go-server-timing.Middleware.func1({0x7fc9001d18e0, 0xc1cb717590}, 0xc1824ad400)
	/go/pkg/mod/github.com/mitchellh/go-server-timing@v1.0.1/middleware.go:74 +0x32b
net/http.HandlerFunc.ServeHTTP(0x123c810?, {0x7fc9001d18e0?, 0xc1cb717590?}, 0xdd95a0?)
	/usr/local/go/src/net/http/server.go:2122 +0x2f
github.com/prometheus/client_golang/prometheus/promhttp.InstrumentHandlerResponseSize.func1({0x123c810?, 0xc11958e1c0?}, 0xc1824ad400)
	/go/pkg/mod/github.com/prometheus/client_golang@v1.14.0/prometheus/promhttp/instrument_server.go:288 +0xc5
net/http.HandlerFunc.ServeHTTP(0xc042f88a58?, {0x123c810?, 0xc11958e1c0?}, 0xc0000e04e0?)
	/usr/local/go/src/net/http/server.go:2122 +0x2f
main.withRequestLogger.func1({0x123c810, 0xc11958e1c0}, 0xc1824ad400)
	/go/src/github.com/ipfs/bifrost-gateway/handlers.go:65 +0x171
net/http.HandlerFunc.ServeHTTP(0x0?, {0x123c810?, 0xc11958e1c0?}, 0x46f24e?)
	/usr/local/go/src/net/http/server.go:2122 +0x2f
net/http.serverHandler.ServeHTTP({0xc1afb4c8a0?}, {0x123c810, 0xc11958e1c0}, 0xc1824ad400)
	/usr/local/go/src/net/http/server.go:2936 +0x316
net/http.(*conn).serve(0xc173373200, {0x123da38, 0xc000a1c150})
	/usr/local/go/src/net/http/server.go:1995 +0x612
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:3089 +0x5ed