panic: running on goroutine 268 (task goroutine for kernel.Task 0xc0009f7908 is 0)

goroutine 268 gp=0xc000895a40 m=14 mp=0xc000688008 [running]:
panic({0x1af4ae0?, 0xc000a9ed20?})
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc000a1f5d0 sp=0xc000a1f520 pc=0x478628
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).assertTaskGoroutine(0xc0009f7908)
	pkg/sentry/kernel/task_run.go:368 +0x13c fp=0xc000a1f650 sp=0xc000a1f5d0 pc=0xf3a2dc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Value(0xc0009f7908, {0x1af63a0, 0x1f741b8})
	pkg/sentry/kernel/task_context.go:59 +0x31 fp=0xc000a1f690 sp=0xc000a1f650 pc=0xf1ca11
gvisor.dev/gvisor/pkg/sentry/kernel.KernelFromContext(...)
	pkg/sentry/kernel/context.go:55
gvisor.dev/gvisor/pkg/sentry/fsimpl/cgroupfs.(*filesystem).Release(0xc00023edc0, {0x1fa1ec0, 0xc0009f7908})
	pkg/sentry/fsimpl/cgroupfs/cgroupfs.go:468 +0x4c fp=0xc000a1f6e8 sp=0xc000a1f690 pc=0x1612acc
gvisor.dev/gvisor/pkg/sentry/vfs.(*Filesystem).DecRef.func1()
	pkg/sentry/vfs/filesystem.go:81 +0x109 fp=0xc000a1f740 sp=0xc000a1f6e8 pc=0xac65e9
gvisor.dev/gvisor/pkg/sentry/vfs.(*FilesystemRefs).DecRef(0xc00023edc0, 0xc000a1f7d8)
	bazel-out/k8-fastbuild/bin/pkg/sentry/vfs/filesystem_refs.go:133 +0x6d fp=0xc000a1f7c8 sp=0xc000a1f740 pc=0xac6ead
gvisor.dev/gvisor/pkg/sentry/vfs.(*Filesystem).DecRef(0xc00023edc0, {0x1fa1ec0, 0xc0009f7908})
	pkg/sentry/vfs/filesystem.go:77 +0x94 fp=0xc000a1f808 sp=0xc000a1f7c8 pc=0xac6494
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc00024d1e0, {0x1fa1ec0, 0xc0009f7908})
	pkg/sentry/vfs/vfs.go:1050 +0x23e fp=0xc000a1f8d0 sp=0xc000a1f808 pc=0xaf525e
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy.deferwrap1()
	pkg/sentry/vfs/mount.go:949 +0x50 fp=0xc000a1f910 sp=0xc000a1f8d0 pc=0xad52b0
runtime.deferreturn()
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:605 +0x5e fp=0xc000a1f9a0 sp=0xc000a1f910 pc=0x43b97e
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy(0xc000224630, {0x1fa1ec0, 0xc0009f7908})
	pkg/sentry/vfs/mount.go:979 +0x752 fp=0xc000a1fb00 sp=0xc000a1f9a0 pc=0xad51d2
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).DecRef(0xc000224630, {0x1fa1ec0, 0xc0009f7908})
	pkg/sentry/vfs/mount.go:943 +0x79 fp=0xc000a1fb28 sp=0xc000a1fb00 pc=0xad4a39
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).processDeferredDecRefs.deferwrap1()
	pkg/sentry/fsimpl/kernfs/kernfs.go:182 +0x62 fp=0xc000a1fb70 sp=0xc000a1fb28 pc=0xc18d02
runtime.deferreturn()
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:605 +0x5e fp=0xc000a1fc00 sp=0xc000a1fb70 pc=0x43b97e
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).processDeferredDecRefs(0xc00050a840, {0x1fa1ec0, 0xc0009f7908})
	pkg/sentry/fsimpl/kernfs/kernfs.go:186 +0x1cb fp=0xc000a1fc60 sp=0xc000a1fc00 pc=0xc18c6b
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Dentry).Invalidate.deferwrap1()
	pkg/sentry/fsimpl/kernfs/kernfs.go:323 +0x50 fp=0xc000a1fca0 sp=0xc000a1fc60 pc=0xc19690
runtime.deferreturn()
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:605 +0x5e fp=0xc000a1fd30 sp=0xc000a1fca0 pc=0x43b97e
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Dentry).Invalidate(0xc000206360, {0x1fa1ec0, 0xc0009f7908})
	pkg/sentry/fsimpl/kernfs/kernfs.go:339 +0x3c5 fp=0xc000a1fe48 sp=0xc000a1fd30 pc=0xc19565
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*taskInode).TaskDestroyAction(0xc0001db408, {0x1fa1ec0, 0xc0009f7908})
	pkg/sentry/fsimpl/proc/task.go:130 +0x172 fp=0xc000a1fef0 sp=0xc000a1fe48 pc=0x1309d32
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).execOnDestroyActions.func1()
	pkg/sentry/kernel/task_exit.go:807 +0x168 fp=0xc000a1ffe0 sp=0xc000a1fef0 pc=0xf269c8
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000a1ffe8 sp=0xc000a1ffe0 pc=0x4819a1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).execOnDestroyActions in goroutine 103
	pkg/sentry/kernel/task_exit.go:804 +0x1dd