goroutine 45 [chan receive, 33 minutes]:
github.com/moby/buildkit/session.serve.func1()
        /src/vendor/github.com/moby/buildkit/session/grpc.go:23 +0x3b
created by github.com/moby/buildkit/session.serve
        /src/vendor/github.com/moby/buildkit/session/grpc.go:22 +0xcf

goroutine 48 [select]:
google.golang.org/grpc/internal/transport.(*recvBufferReader).readClient(0xc00007e410, {0xc000438490, 0x5, 0x5})
        /src/vendor/google.golang.org/grpc/internal/transport/transport.go:190 +0xaa
google.golang.org/grpc/internal/transport.(*recvBufferReader).Read(0xc00007e410, {0xc000438490, 0xc0000e6900, 0xc0005a17e0})
        /src/vendor/google.golang.org/grpc/internal/transport/transport.go:170 +0x147
google.golang.org/grpc/internal/transport.(*transportReader).Read(0xc0006194a0, {0xc000438490, 0xc0005a1858, 0xc80be7})
        /src/vendor/google.golang.org/grpc/internal/transport/transport.go:484 +0x32
io.ReadAtLeast({0x213ebc0, 0xc0006194a0}, {0xc000438490, 0x5, 0x5}, 0x5)
        /usr/local/go/src/io/io.go:328 +0x9a
io.ReadFull(...)
        /usr/local/go/src/io/io.go:347
google.golang.org/grpc/internal/transport.(*Stream).Read(0xc000221680, {0xc000438490, 0x5, 0x5})
        /src/vendor/google.golang.org/grpc/internal/transport/transport.go:468 +0xa5
google.golang.org/grpc.(*parser).recvMsg(0xc000438480, 0x1000000)
        /src/vendor/google.golang.org/grpc/rpc_util.go:559 +0x47
google.golang.org/grpc.recvAndDecompress(0xc000065ac0, 0xc000221680, {0x0, 0x0}, 0x1000000, 0x0, {0x0, 0x0})
        /src/vendor/google.golang.org/grpc/rpc_util.go:690 +0x66
google.golang.org/grpc.recv(0x0, {0x7f3e67ceeeb8, 0x31dc028}, 0x1e987d9, {0x0, 0x0}, {0x1d97d80, 0xc000358500}, 0x0, 0x0, ...)
        /src/vendor/google.golang.org/grpc/rpc_util.go:756 +0x6e
google.golang.org/grpc.(*csAttempt).recvMsg(0xc00062e210, {0x1d97d80, 0xc000358500}, 0xc0009b0430)
        /src/vendor/google.golang.org/grpc/stream.go:975 +0x2b0
google.golang.org/grpc.(*clientStream).RecvMsg.func1(0xc)
        /src/vendor/google.golang.org/grpc/stream.go:826 +0x25
google.golang.org/grpc.(*clientStream).withRetry(0xc00004dc00, 0xc0005a1c48, 0xc0005a1c18)
        /src/vendor/google.golang.org/grpc/stream.go:680 +0x2f6
google.golang.org/grpc.(*clientStream).RecvMsg(0xc00004dc00, {0x1d97d80, 0xc000358500})
        /src/vendor/google.golang.org/grpc/stream.go:825 +0x11f
go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc.(*clientStream).RecvMsg(0xc00024ff00, {0x1d97d80, 0xc000358500})
        /src/vendor/go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc/interceptor.go:144 +0x42
github.com/moby/buildkit/session/grpchijack.(*conn).Read(0xc000385810, {0xc00044e820, 0x9, 0xc0005a1f2c})
        /src/vendor/github.com/moby/buildkit/session/grpchijack/dial.go:71 +0x1fe
io.ReadAtLeast({0x7f3e67ceff50, 0xc000385810}, {0xc00044e820, 0x9, 0x9}, 0x9)
        /usr/local/go/src/io/io.go:328 +0x9a
io.ReadFull(...)
        /usr/local/go/src/io/io.go:347
golang.org/x/net/http2.readFrameHeader({0xc00044e820, 0x9, 0xc00072cd68}, {0x7f3e67ceff50, 0xc000385810})
        /src/vendor/golang.org/x/net/http2/frame.go:237 +0x6e
golang.org/x/net/http2.(*Framer).ReadFrame(0xc00044e7e0)
        /src/vendor/golang.org/x/net/http2/frame.go:498 +0x95
golang.org/x/net/http2.(*serverConn).readFrames(0xc00061ad80)
        /src/vendor/golang.org/x/net/http2/server.go:752 +0x91
created by golang.org/x/net/http2.(*serverConn).serve
        /src/vendor/golang.org/x/net/http2/server.go:858 +0x585

rax    0xca
rbx    0x0
rcx    0x4690e3
rdx    0x0
rdi    0x31abc50
rsi    0x80
rbp    0x7ffc8e3c4930
rsp    0x7ffc8e3c48e8
r8     0x0
r9     0x0
r10    0x0
r11    0x286
r12    0x43eda0
r13    0x0
r14    0x31ab340
r15    0x0
rip    0x4690e1
rflags 0x286
cs     0x33
fs     0x0
gs     0x0

goroutine 24 [chan receive, 33 minutes]:
github.com/docker/cli/vendor/github.com/moby/buildkit/util/appcontext.Context.func1.1()
        /build/docker.io-KThOjh/docker.io-20.10.21/.gopath/src/github.com/docker/cli/vendor/github.com/moby/buildkit/util/appcontext/appcontext.go:30 +0x45
created by github.com/docker/cli/vendor/github.com/moby/buildkit/util/appcontext.Context.func1
        /build/docker.io-KThOjh/docker.io-20.10.21/.gopath/src/github.com/docker/cli/vendor/github.com/moby/buildkit/util/appcontext/appcontext.go:28 +0x10a

rax    0xca
rbx    0x0
rcx    0x55c80a2e96a3
rdx    0x0
rdi    0x55c80c9544c8
rsi    0x80
rbp    0x7fff34653bd0
rsp    0x7fff34653b88
r8     0x0
r9     0x0
r10    0x0
r11    0x286
r12    0x7fff34653be0
r13    0x0
r14    0x55c80c953be0
r15    0x7fc6b87963d8
rip    0x55c80a2e96a1
rflags 0x286
cs     0x33
fs     0x0
gs     0x0