panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0xa8 pc=0x103a27a] goroutine 99557 [running]: panic(0x1276f00, 0x202acc0) GOROOT/src/runtime/panic.go:1065 +0x565 fp=0xc00529f9b8 sp=0xc00529f8f0 pc=0x437c65 runtime.panicmem() GOROOT/src/runtime/panic.go:212 +0x5b fp=0xc00529f9d8 sp=0xc00529f9b8 pc=0x435cbb runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:734 +0x173 fp=0xc00529fa10 sp=0xc00529f9d8 pc=0x44fa93 gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*connection).callFuture(0xc0011fd620, 0xc0044f8a80, 0xc005f58d80, 0x1d00000040, 0xe, 0x1) pkg/sentry/fsimpl/fuse/connection.go:318 +0x3a fp=0xc00529fa70 sp=0xc00529fa10 pc=0x103a27a gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*connection).Call(0xc0011fd620, 0xc0044f8a80, 0xc005f58d80, 0x1, 0x1d, 0x1608ba8) pkg/sentry/fsimpl/fuse/connection.go:291 +0xf2 fp=0xc00529fae0 sp=0xc00529fa70 pc=0x1039f92 gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*connection).CallAsync(...) pkg/sentry/fsimpl/fuse/connection.go:237 gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*fileDescription).Release(0xc002848ab0, 0x160c7d8, 0xc0044f8a80) pkg/sentry/fsimpl/fuse/file.go:103 +0x32d fp=0xc00529fb58 sp=0xc00529fae0 pc=0x103dfad gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef.func1() pkg/sentry/vfs/file_description.go:207 +0x2db fp=0xc00529fc30 sp=0xc00529fb58 pc=0x7b59db gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescriptionRefs).DecRef(0xc002848ab0, 0xc00529fcb8) bazel-out/k8-fastbuild-ST-4c64f0b3d5c7/bin/pkg/sentry/vfs/file_description_refs.go:152 +0x82 fp=0xc00529fca8 sp=0xc00529fc30 pc=0x790d42 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef(0xc002848ab0, 0x160c7d8, 0xc0044f8a80) pkg/sentry/vfs/file_description.go:167 +0x73 fp=0xc00529fce8 sp=0xc00529fca8 pc=0x789ff3 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).dropVFS2(0xc004df0800, 0x160c7d8, 0xc0044f8a80, 0xc002848ab0) pkg/sentry/kernel/fd_table.go:196 +0x88 fp=0xc00529fd50 sp=0xc00529fce8 pc=0xa3b0e8 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).RemoveIf(0xc004df0800, 0x160c7d8, 0xc0044f8a80, 0x1493ef8) pkg/sentry/kernel/fd_table.go:845 +0x225 fp=0xc00529fe08 sp=0xc00529fd50 pc=0xa3de65 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).DecRef.func1() pkg/sentry/kernel/fd_table.go:214 +0x52 fp=0xc00529fe38 sp=0xc00529fe08 pc=0xaa7372 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTableRefs).DecRef(0xc004df0800, 0xc00529fec0) bazel-out/k8-fastbuild-ST-4c64f0b3d5c7/bin/pkg/sentry/kernel/fd_table_refs.go:152 +0x82 fp=0xc00529feb0 sp=0xc00529fe38 pc=0xa3e562 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).DecRef(0xc004df0800, 0x160c7d8, 0xc0044f8a80) pkg/sentry/kernel/fd_table.go:212 +0x73 fp=0xc00529fef0 sp=0xc00529feb0 pc=0xa3b3d3 gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute(0x0, 0xc0044f8a80, 0x15debc0, 0x0) pkg/sentry/kernel/task_exit.go:279 +0x217 fp=0xc00529ff68 sp=0xc00529fef0 pc=0xa6ebf7 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0044f8a80, 0xa99) pkg/sentry/kernel/task_run.go:98 +0x1b9 fp=0xc00529ffd0 sp=0xc00529ff68 pc=0xa79c39 runtime.goexit() src/runtime/asm_amd64.s:1371 +0x1 fp=0xc00529ffd8 sp=0xc00529ffd0 pc=0x472861 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:396 +0x116