panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0xa8 pc=0x103639a] goroutine 207821 [running]: panic(0x1273bc0, 0x2021400) GOROOT/src/runtime/panic.go:1065 +0x565 fp=0xc0010239b8 sp=0xc0010238f0 pc=0x437c65 runtime.panicmem() GOROOT/src/runtime/panic.go:212 +0x5b fp=0xc0010239d8 sp=0xc0010239b8 pc=0x435cbb runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:734 +0x173 fp=0xc001023a10 sp=0xc0010239d8 pc=0x44fa93 gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*connection).callFuture(0xc0027fc840, 0xc012304000, 0xc00339f2c0, 0x1d00000040, 0x10, 0x1) pkg/sentry/fsimpl/fuse/connection.go:318 +0x3a fp=0xc001023a70 sp=0xc001023a10 pc=0x103639a gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*connection).Call(0xc0027fc840, 0xc012304000, 0xc00339f2c0, 0x1, 0x1d, 0x1603978) pkg/sentry/fsimpl/fuse/connection.go:291 +0xf2 fp=0xc001023ae0 sp=0xc001023a70 pc=0x10360b2 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(0xc000657780, 0x1607478, 0xc012304000) pkg/sentry/fsimpl/fuse/file.go:102 +0x32d fp=0xc001023b58 sp=0xc001023ae0 pc=0x103a32d gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef.func1() pkg/sentry/vfs/file_description.go:207 +0x2db fp=0xc001023c30 sp=0xc001023b58 pc=0x7b27db gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescriptionRefs).DecRef(0xc000657780, 0xc001023cb8) bazel-out/k8-fastbuild-ST-3ea255117c10/bin/pkg/sentry/vfs/file_description_refs.go:152 +0x82 fp=0xc001023ca8 sp=0xc001023c30 pc=0x78dc02 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef(0xc000657780, 0x1607478, 0xc012304000) pkg/sentry/vfs/file_description.go:167 +0x73 fp=0xc001023ce8 sp=0xc001023ca8 pc=0x786eb3 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).dropVFS2(0xc01516cd40, 0x1607478, 0xc012304000, 0xc000657780) pkg/sentry/kernel/fd_table.go:196 +0x88 fp=0xc001023d50 sp=0xc001023ce8 pc=0xa37dc8 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).RemoveIf(0xc01516cd40, 0x1607478, 0xc012304000, 0x148ff00) pkg/sentry/kernel/fd_table.go:845 +0x225 fp=0xc001023e08 sp=0xc001023d50 pc=0xa3ab45 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).DecRef.func1() pkg/sentry/kernel/fd_table.go:214 +0x52 fp=0xc001023e38 sp=0xc001023e08 pc=0xaa3c12 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTableRefs).DecRef(0xc01516cd40, 0xc001023ec0) bazel-out/k8-fastbuild-ST-3ea255117c10/bin/pkg/sentry/kernel/fd_table_refs.go:152 +0x82 fp=0xc001023eb0 sp=0xc001023e38 pc=0xa3b242 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).DecRef(0xc01516cd40, 0x1607478, 0xc012304000) pkg/sentry/kernel/fd_table.go:212 +0x73 fp=0xc001023ef0 sp=0xc001023eb0 pc=0xa380b3 gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute(0x0, 0xc012304000, 0x15d9ac0, 0x0) pkg/sentry/kernel/task_exit.go:279 +0x217 fp=0xc001023f68 sp=0xc001023ef0 pc=0xa6b8d7 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc012304000, 0x280a) pkg/sentry/kernel/task_run.go:98 +0x1b9 fp=0xc001023fd0 sp=0xc001023f68 pc=0xa768f9 runtime.goexit() src/runtime/asm_amd64.s:1371 +0x1 fp=0xc001023fd8 sp=0xc001023fd0 pc=0x472861 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:398 +0x116