panic: WARNING: circular locking detected: kernel.taskSetRWMutex -> kernfs.filesystemRWMutex:
goroutine 159 [running]:
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*filesystemRWMutex).Lock(0xc000be84d0)
	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(0xc0006a2000, {0x1b0e328, 0xc0003ddc80})
	pkg/sentry/fsimpl/kernfs/kernfs.go:286 +0x79
gvisor.dev/gvisor/pkg/sentry/kernel.(*Cgroup).decRef(0xc000a18720)
	pkg/sentry/kernel/cgroup.go:121 +0x5c
gvisor.dev/gvisor/pkg/sentry/kernel.(*TaskSet).newTask(0xc000329b20, {0x1b0e7f0, 0xc0006eb500}, 0xc000b83338)
	pkg/sentry/kernel/task_start.go:244 +0x14d1
gvisor.dev/gvisor/pkg/sentry/kernel.(*TaskSet).NewTask(0xc0006eb500?, {0x1b0e7f0, 0xc0006eb500}, 0xc000b83338)
	pkg/sentry/kernel/task_start.go:127 +0xeb
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc0006eb500, 0xc000b83418)
	pkg/sentry/kernel/task_clone.go:219 +0x1da5
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x471337?, 0x1200011, 0x0, 0x0, 0x55ece5b315d0, 0x0)
	pkg/sentry/syscalls/linux/sys_thread.go:217 +0xfc
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0xe6e6b?, {{0x1200011}, {0x0}, {0x0}, {0x55ece5b315d0}, {0x0}, {0x55ece5b31300}})
	pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x4e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0006eb500, 0x38, {{0x1200011}, {0x0}, {0x0}, {0x55ece5b315d0}, {0x0}, {0x55ece5b31300}})
	pkg/sentry/kernel/task_syscall.go:142 +0x9b8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0006eb500, 0x0?, {{0x1200011}, {0x0}, {0x0}, {0x55ece5b315d0}, {0x0}, {0x55ece5b31300}})
	pkg/sentry/kernel/task_syscall.go:322 +0x7d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0001a4340?, 0xc0002445a0?, {{0x1200011}, {0x0}, {0x0}, {0x55ece5b315d0}, {0x0}, {0x55ece5b31300}})
	pkg/sentry/kernel/task_syscall.go:282 +0x8f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0006eb500)
	pkg/sentry/kernel/task_syscall.go:257 +0x496
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0006eb500?, 0xc0006eb500)
	pkg/sentry/kernel/task_run.go:253 +0x18f9
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0006eb500, 0xe)
	pkg/sentry/kernel/task_run.go:94 +0x354
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:380 +0x1a8