panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0xa8 pc=0x103639a] goroutine 863824 [running]: panic(0x1273bc0, 0x2021400) GOROOT/src/runtime/panic.go:1065 +0x565 fp=0xc000d3b9b8 sp=0xc000d3b8f0 pc=0x437c65 runtime.panicmem() GOROOT/src/runtime/panic.go:212 +0x5b fp=0xc000d3b9d8 sp=0xc000d3b9b8 pc=0x435cbb runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:734 +0x173 fp=0xc000d3ba10 sp=0xc000d3b9d8 pc=0x44fa93 gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*connection).callFuture(0xc0840f6420, 0xc0138a6000, 0xc0029e95c0, 0x1d00000040, 0xc, 0x1) pkg/sentry/fsimpl/fuse/connection.go:318 +0x3a fp=0xc000d3ba70 sp=0xc000d3ba10 pc=0x103639a gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*connection).Call(0xc0840f6420, 0xc0138a6000, 0xc0029e95c0, 0x1, 0x1d, 0x1603978) pkg/sentry/fsimpl/fuse/connection.go:291 +0xf2 fp=0xc000d3bae0 sp=0xc000d3ba70 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(0xc000c3b680, 0x1607478, 0xc0138a6000) pkg/sentry/fsimpl/fuse/file.go:102 +0x32d fp=0xc000d3bb58 sp=0xc000d3bae0 pc=0x103a32d gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef.func1() pkg/sentry/vfs/file_description.go:207 +0x2db fp=0xc000d3bc30 sp=0xc000d3bb58 pc=0x7b27db gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescriptionRefs).DecRef(0xc000c3b680, 0xc000d3bcb8) bazel-out/k8-fastbuild-ST-4c64f0b3d5c7/bin/pkg/sentry/vfs/file_description_refs.go:152 +0x82 fp=0xc000d3bca8 sp=0xc000d3bc30 pc=0x78dc02 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef(0xc000c3b680, 0x1607478, 0xc0138a6000) pkg/sentry/vfs/file_description.go:167 +0x73 fp=0xc000d3bce8 sp=0xc000d3bca8 pc=0x786eb3 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).dropVFS2(0xc0113a61c0, 0x1607478, 0xc0138a6000, 0xc000c3b680) pkg/sentry/kernel/fd_table.go:196 +0x88 fp=0xc000d3bd50 sp=0xc000d3bce8 pc=0xa37dc8 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).RemoveIf(0xc0113a61c0, 0x1607478, 0xc0138a6000, 0x148ff00) pkg/sentry/kernel/fd_table.go:845 +0x225 fp=0xc000d3be08 sp=0xc000d3bd50 pc=0xa3ab45 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).DecRef.func1() pkg/sentry/kernel/fd_table.go:214 +0x52 fp=0xc000d3be38 sp=0xc000d3be08 pc=0xaa3c12 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTableRefs).DecRef(0xc0113a61c0, 0xc000d3bec0) bazel-out/k8-fastbuild-ST-4c64f0b3d5c7/bin/pkg/sentry/kernel/fd_table_refs.go:152 +0x82 fp=0xc000d3beb0 sp=0xc000d3be38 pc=0xa3b242 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).DecRef(0xc0113a61c0, 0x1607478, 0xc0138a6000) pkg/sentry/kernel/fd_table.go:212 +0x73 fp=0xc000d3bef0 sp=0xc000d3beb0 pc=0xa380b3 gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute(0x0, 0xc0138a6000, 0x15d9ac0, 0x0) pkg/sentry/kernel/task_exit.go:279 +0x217 fp=0xc000d3bf68 sp=0xc000d3bef0 pc=0xa6b8d7 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0138a6000, 0x4eb3) pkg/sentry/kernel/task_run.go:98 +0x1b9 fp=0xc000d3bfd0 sp=0xc000d3bf68 pc=0xa768f9 runtime.goexit() src/runtime/asm_amd64.s:1371 +0x1 fp=0xc000d3bfd8 sp=0xc000d3bfd0 pc=0x472861 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:398 +0x116