panic: WARNING: circular locking detected: kernel.taskSetRWMutex -> kernfs.filesystemRWMutex:
goroutine 255 [running]:
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*filesystemRWMutex).Lock(0xc0004463b0)
	bazel-out/k8-fastbuild-ST-3dcbe13c9b87/bin/pkg/sentry/fsimpl/kernfs/filesystem_mutex.go:31 +0x45
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Dentry).DecRef(0xc00205cb40, {0x7991b0, 0xc000333170})
	pkg/sentry/fsimpl/kernfs/kernfs.go:286 +0x7e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Cgroup).decRef(0xc00318d680)
	pkg/sentry/kernel/cgroup.go:121 +0x5c
gvisor.dev/gvisor/pkg/sentry/kernel.(*TaskSet).newTask(0xc0001a41c0, {0x799678, 0xc000af6a80}, 0xc000c23310)
	pkg/sentry/kernel/task_start.go:244 +0x159b
gvisor.dev/gvisor/pkg/sentry/kernel.(*TaskSet).NewTask(0xc000af6a80?, {0x799678, 0xc000af6a80}, 0xc000c23310)
	pkg/sentry/kernel/task_start.go:127 +0xeb
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc000af6a80, 0xc000c233f0)
	pkg/sentry/kernel/task_clone.go:219 +0x1e06
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x1127337?, 0x1200011, 0x0, 0x0, 0x55953627d6d0, 0x0)
	pkg/sentry/syscalls/linux/sys_thread.go:216 +0x145
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0xc000c23578?, {{0x1200011}, {0x0}, {0x0}, {0x55953627d6d0}, {0x0}, {0x55953627d400}})
	pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x4e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000af6a80, 0x38, {{0x1200011}, {0x0}, {0x0}, {0x55953627d6d0}, {0x0}, {0x55953627d400}})
	pkg/sentry/kernel/task_syscall.go:142 +0x9b9
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000af6a80, 0x0?, {{0x1200011}, {0x0}, {0x0}, {0x55953627d6d0}, {0x0}, {0x55953627d400}})
	pkg/sentry/kernel/task_syscall.go:322 +0x7d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000b10180?, 0xc000aa8270?, {{0x1200011}, {0x0}, {0x0}, {0x55953627d6d0}, {0x0}, {0x55953627d400}})
	pkg/sentry/kernel/task_syscall.go:282 +0x8f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000af6a80)
	pkg/sentry/kernel/task_syscall.go:257 +0x4c5
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000af6a80?, 0xc000af6a80)
	pkg/sentry/kernel/task_run.go:253 +0x1965
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000af6a80, 0x32)
	pkg/sentry/kernel/task_run.go:94 +0x3a2
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:380 +0x1ad