panic: WARNING: circular locking detected: kernel.taskSetRWMutex -> kernfs.filesystemRWMutex: goroutine 801548 [running]: gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*filesystemRWMutex).Lock(0xc0052677f0) 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(0xc00907afc0, {0x7991b0, 0xc0002e1170}) pkg/sentry/fsimpl/kernfs/kernfs.go:286 +0x7e gvisor.dev/gvisor/pkg/sentry/kernel.(*Cgroup).decRef(0xc0087a1e00) pkg/sentry/kernel/cgroup.go:121 +0x5c gvisor.dev/gvisor/pkg/sentry/kernel.(*TaskSet).newTask(0xc0004d00e0, {0x799678, 0xc006a10000}, 0xc00a1a9310) pkg/sentry/kernel/task_start.go:244 +0x159b gvisor.dev/gvisor/pkg/sentry/kernel.(*TaskSet).NewTask(0xc006a10000?, {0x799678, 0xc006a10000}, 0xc00a1a9310) pkg/sentry/kernel/task_start.go:127 +0xeb gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc006a10000, 0xc00a1a93f0) pkg/sentry/kernel/task_clone.go:219 +0x1e06 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x1127337?, 0x3d0f00, 0x7f2e0ebff2f0, 0x7f2e0ebff9d0, 0x7f2e0ebff9d0, 0x7f2e0ebff700) pkg/sentry/syscalls/linux/sys_thread.go:216 +0x145 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0xc00a1a9578?, {{0x3d0f00}, {0x7f2e0ebff2f0}, {0x7f2e0ebff9d0}, {0x7f2e0ebff9d0}, {0x7f2e0ebff700}, {0x7f2e0ebff700}}) pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x4e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc006a10000, 0x38, {{0x3d0f00}, {0x7f2e0ebff2f0}, {0x7f2e0ebff9d0}, {0x7f2e0ebff9d0}, {0x7f2e0ebff700}, {0x7f2e0ebff700}}) pkg/sentry/kernel/task_syscall.go:142 +0x9b9 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc006a10000, 0x0?, {{0x3d0f00}, {0x7f2e0ebff2f0}, {0x7f2e0ebff9d0}, {0x7f2e0ebff9d0}, {0x7f2e0ebff700}, {0x7f2e0ebff700}}) pkg/sentry/kernel/task_syscall.go:322 +0x7d gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc009576ea0?, 0xc0077aa1a0?, {{0x3d0f00}, {0x7f2e0ebff2f0}, {0x7f2e0ebff9d0}, {0x7f2e0ebff9d0}, {0x7f2e0ebff700}, {0x7f2e0ebff700}}) pkg/sentry/kernel/task_syscall.go:282 +0x8f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc006a10000) pkg/sentry/kernel/task_syscall.go:257 +0x4c5 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc006a10000?, 0xc006a10000) pkg/sentry/kernel/task_run.go:253 +0x1965 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc006a10000, 0x3f0f) 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