panic: WARNING: circular locking detected: kernel.signalHandlersMutex -> kernfs.filesystemRWMutex: goroutine 246 [running]: gvisor.dev/gvisor/pkg/sync/locking.(*ancestorsAtomicPtrMap).RangeRepeatable(0xc0001d00b0, 0xc000dd8808) bazel-out/k8-fastbuild-ST-3dcbe13c9b87/bin/pkg/sync/locking/atomicptrmap_ancestors_unsafe.go:441 +0x232 gvisor.dev/gvisor/pkg/sync/locking.checkLock(0xc000360fc0, 0xc0001d0090, {0x0, 0x0, 0x0}) pkg/sync/locking/lockdep.go:98 +0x373 gvisor.dev/gvisor/pkg/sync/locking.AddGLock(0xc000360fc0, 0xffffffffffffffff) pkg/sync/locking/lockdep.go:126 +0x28c gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*filesystemRWMutex).Lock(0xc00025a290) 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(0xc000f902d0, {0x1b0e328, 0xc00034c660}) pkg/sentry/fsimpl/kernfs/kernfs.go:286 +0x79 gvisor.dev/gvisor/pkg/sentry/kernel.(*Cgroup).decRef(0xc000b981b0) pkg/sentry/kernel/cgroup.go:121 +0x5c gvisor.dev/gvisor/pkg/sentry/kernel.(*TaskSet).newTask(0xc00014dc00, {0x1b0e7f0, 0xc000490000}, 0xc000dd9338) pkg/sentry/kernel/task_start.go:244 +0x14d1 gvisor.dev/gvisor/pkg/sentry/kernel.(*TaskSet).NewTask(0xc000490000?, {0x1b0e7f0, 0xc000490000}, 0xc000dd9338) pkg/sentry/kernel/task_start.go:127 +0xeb gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc000490000, 0xc000dd9418) pkg/sentry/kernel/task_clone.go:219 +0x1da5 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x471337?, 0x1200011, 0x0, 0x0, 0x5633247686d0, 0x0) pkg/sentry/syscalls/linux/sys_thread.go:217 +0xfc gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0xc000dd9578?, {{0x1200011}, {0x0}, {0x0}, {0x5633247686d0}, {0x0}, {0x563324768400}}) pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x4e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000490000, 0x38, {{0x1200011}, {0x0}, {0x0}, {0x5633247686d0}, {0x0}, {0x563324768400}}) pkg/sentry/kernel/task_syscall.go:142 +0x9b8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000490000, 0x0?, {{0x1200011}, {0x0}, {0x0}, {0x5633247686d0}, {0x0}, {0x563324768400}}) pkg/sentry/kernel/task_syscall.go:322 +0x7d gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0001f81b0?, 0xc0007741a0?, {{0x1200011}, {0x0}, {0x0}, {0x5633247686d0}, {0x0}, {0x563324768400}}) pkg/sentry/kernel/task_syscall.go:282 +0x8f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000490000) pkg/sentry/kernel/task_syscall.go:257 +0x496 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000490000?, 0xc000490000) pkg/sentry/kernel/task_run.go:253 +0x18f9 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000490000, 0x2f) 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