panic: running on goroutine 260 (task goroutine for kernel.Task 0xc000b8e588 is 0)

goroutine 260 gp=0xc000785c00 m=5 mp=0xc000180008 [running]:
panic({0x1beb780?, 0xc000484c70?})
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc000f61558 sp=0xc000f614a8 pc=0x478628
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).assertTaskGoroutine(0xc000b8e588)
	pkg/sentry/kernel/task_run.go:368 +0x14e fp=0xc000f615d8 sp=0xc000f61558 pc=0xfdbdee
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Value(0xc000b8e588, {0x1bed040, 0x2045f88})
	pkg/sentry/kernel/task_context.go:59 +0x57 fp=0xc000f61618 sp=0xc000f615d8 pc=0xfbce37
gvisor.dev/gvisor/pkg/sentry/kernel.KernelFromContext({0x2073ac0, 0xc000b8e588})
	pkg/sentry/kernel/context.go:55 +0x5b fp=0xc000f61650 sp=0xc000f61618 pc=0xf63c7b
gvisor.dev/gvisor/pkg/sentry/fsimpl/cgroupfs.(*filesystem).Release(0xc000230a00, {0x2073ac0, 0xc000b8e588})
	pkg/sentry/fsimpl/cgroupfs/cgroupfs.go:468 +0x4b fp=0xc000f616b0 sp=0xc000f61650 pc=0x171d0ab
gvisor.dev/gvisor/pkg/sentry/vfs.(*Filesystem).DecRef.func1()
	pkg/sentry/vfs/filesystem.go:81 +0x11f fp=0xc000f61708 sp=0xc000f616b0 pc=0xb16c5f
gvisor.dev/gvisor/pkg/sentry/vfs.(*FilesystemRefs).DecRef(0xc000230a00, 0xc000f61790)
	bazel-out/k8-fastbuild/bin/pkg/sentry/vfs/filesystem_refs.go:133 +0xb4 fp=0xc000f61780 sp=0xc000f61708 pc=0xb17774
gvisor.dev/gvisor/pkg/sentry/vfs.(*Filesystem).DecRef(0xc000230a00, {0x2073ac0, 0xc000b8e588})
	pkg/sentry/vfs/filesystem.go:77 +0xa5 fp=0xc000f617c0 sp=0xc000f61780 pc=0xb16b05
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc0002471e0, {0x2073ac0, 0xc000b8e588})
	pkg/sentry/vfs/vfs.go:1050 +0x2b0 fp=0xc000f61890 sp=0xc000f617c0 pc=0xb4aa70
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy.deferwrap1()
	pkg/sentry/vfs/mount.go:949 +0x50 fp=0xc000f618d0 sp=0xc000f61890 pc=0xb27a50
runtime.deferreturn()
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:605 +0x5e fp=0xc000f61960 sp=0xc000f618d0 pc=0x43b97e
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy(0xc0008c2fd0, {0x2073ac0, 0xc000b8e588})
	pkg/sentry/vfs/mount.go:979 +0x8cc fp=0xc000f61ad8 sp=0xc000f61960 pc=0xb2796c
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).DecRef(0xc0008c2fd0, {0x2073ac0, 0xc000b8e588})
	pkg/sentry/vfs/mount.go:943 +0xca fp=0xc000f61b08 sp=0xc000f61ad8 pc=0xb2706a
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).processDeferredDecRefs.deferwrap1()
	pkg/sentry/fsimpl/kernfs/kernfs.go:182 +0x62 fp=0xc000f61b50 sp=0xc000f61b08 pc=0xc94e22
runtime.deferreturn()
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:605 +0x5e fp=0xc000f61be0 sp=0xc000f61b50 pc=0x43b97e
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).processDeferredDecRefs(0xc00094c000, {0x2073ac0, 0xc000b8e588})
	pkg/sentry/fsimpl/kernfs/kernfs.go:186 +0x205 fp=0xc000f61c40 sp=0xc000f61be0 pc=0xc94d85
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Dentry).Invalidate.deferwrap1()
	pkg/sentry/fsimpl/kernfs/kernfs.go:323 +0x50 fp=0xc000f61c80 sp=0xc000f61c40 pc=0xc95a70
runtime.deferreturn()
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:605 +0x5e fp=0xc000f61d10 sp=0xc000f61c80 pc=0x43b97e
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Dentry).Invalidate(0xc00032ac60, {0x2073ac0, 0xc000b8e588})
	pkg/sentry/fsimpl/kernfs/kernfs.go:339 +0x42d fp=0xc000f61e30 sp=0xc000f61d10 pc=0xc9592d
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*taskInode).TaskDestroyAction(0xc000b7f408, {0x2073ac0, 0xc000b8e588})
	pkg/sentry/fsimpl/proc/task.go:130 +0x18d fp=0xc000f61ee0 sp=0xc000f61e30 pc=0x13ce52d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).execOnDestroyActions.func1()
	pkg/sentry/kernel/task_exit.go:807 +0x1ad fp=0xc000f61fe0 sp=0xc000f61ee0 pc=0xfc736d
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000f61fe8 sp=0xc000f61fe0 pc=0x4819a1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).execOnDestroyActions in goroutine 291
	pkg/sentry/kernel/task_exit.go:804 +0x1f1