panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0xa8 pc=0xf8ac0c] goroutine 1440059 [running]: panic({0x118b4e0, 0x2057300}) GOROOT/src/runtime/panic.go:1147 +0x3a8 fp=0xc000e69a08 sp=0xc000e69948 pc=0x4351c8 runtime.panicmem(...) GOROOT/src/runtime/panic.go:221 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:735 +0x327 fp=0xc000e69a58 sp=0xc000e69a08 pc=0x44bd67 gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*connection).callFuture(0xc012a4d860, 0x0, 0xc00ea56040) pkg/sentry/fsimpl/fuse/connection.go:299 +0x4c fp=0xc000e69ab0 sp=0xc000e69a58 pc=0xf8ac0c gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*connection).Call(0xc012a4d860, 0xc08b4f3680, 0xc00ea56040) pkg/sentry/fsimpl/fuse/connection.go:275 +0x145 fp=0xc000e69b08 sp=0xc000e69ab0 pc=0xf8aa45 gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*connection).CallAsync(...) pkg/sentry/fsimpl/fuse/connection.go:229 gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*fileDescription).Release(0xc0046d8c60, {0x14f87b0, 0xc00a33ea80}) pkg/sentry/fsimpl/fuse/file.go:90 +0x2e6 fp=0xc000e69b78 sp=0xc000e69b08 pc=0xf8e546 gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*directoryFD).Release(0xc0046d8c60, {0x14f87b0, 0xc00a33ea80}) :1 +0x33 fp=0xc000e69ba0 sp=0xc000e69b78 pc=0xfa0d13 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef.func1() pkg/sentry/vfs/file_description.go:192 +0x2a8 fp=0xc000e69c68 sp=0xc000e69ba0 pc=0x717fe8 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescriptionRefs).DecRef(0xc00a33ea80, 0xc000e69ce0) bazel-out/k8-fastbuild-ST-3ea255117c10/bin/pkg/sentry/vfs/file_description_refs.go:131 +0x74 fp=0xc000e69cd0 sp=0xc000e69c68 pc=0x71dfd4 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef(0xc0046d8c60, {0x14f87b0, 0xc00a33ea80}) pkg/sentry/vfs/file_description.go:161 +0x5b fp=0xc000e69d10 sp=0xc000e69cd0 pc=0x717cfb gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).dropVFS2(0xc011f8a600, {0x14f87b0, 0xc00a33ea80}, 0xc0046d8c60) pkg/sentry/kernel/fd_table.go:166 +0x167 fp=0xc000e69d70 sp=0xc000e69d10 pc=0x9a3ea7 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).RemoveIf(0xc011f8a600, {0x14f87b0, 0xc00a33ea80}, 0x136cb10) pkg/sentry/kernel/fd_table.go:662 +0x1f7 fp=0xc000e69e28 sp=0xc000e69d70 pc=0x9a6ff7 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).DecRef.func1() pkg/sentry/kernel/fd_table.go:181 +0x36 fp=0xc000e69e58 sp=0xc000e69e28 pc=0x9a4096 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTableRefs).DecRef(0xc012311860, 0xc000e69ed0) bazel-out/k8-fastbuild-ST-3ea255117c10/bin/pkg/sentry/kernel/fd_table_refs.go:131 +0x74 fp=0xc000e69ec0 sp=0xc000e69e58 pc=0x9a7834 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).DecRef(0xc00a33ea80, {0x14f87b0, 0xc00a33ea80}) pkg/sentry/kernel/fd_table.go:180 +0x5b fp=0xc000e69f00 sp=0xc000e69ec0 pc=0x9a401b gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute(0xc011a08a00, 0xc00a33ea80) pkg/sentry/kernel/task_exit.go:248 +0x295 fp=0xc000e69f60 sp=0xc000e69f00 pc=0x9d8dd5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00a33ea80, 0x29d) pkg/sentry/kernel/task_run.go:95 +0x1ec fp=0xc000e69fc0 sp=0xc000e69f60 pc=0x9e380c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start·dwrap·230() pkg/sentry/kernel/task_start.go:339 +0x2a fp=0xc000e69fe0 sp=0xc000e69fc0 pc=0x9f018a runtime.goexit() src/runtime/asm_amd64.s:1581 +0x1 fp=0xc000e69fe8 sp=0xc000e69fe0 pc=0x469321 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:339 +0x106