panic: WARNING: circular locking detected: kernel.signalHandlersMutex -> kernfs.filesystemRWMutex: goroutine 7091 [running]: gvisor.dev/gvisor/pkg/sync/locking.(*ancestorsAtomicPtrMap).RangeRepeatable(0xc00021c0b0, 0xc0006447e0) bazel-out/k8-fastbuild-ST-3dcbe13c9b87/bin/pkg/sync/locking/atomicptrmap_ancestors_unsafe.go:441 +0x1dc gvisor.dev/gvisor/pkg/sync/locking.checkLock(0xc000354fc0, 0xc00021c090, {0x0, 0x0, 0x0}) pkg/sync/locking/lockdep.go:98 +0x373 gvisor.dev/gvisor/pkg/sync/locking.AddGLock(0xc000354fc0, 0xffffffffffffffff) pkg/sync/locking/lockdep.go:126 +0x28c gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*filesystemRWMutex).Lock(0xc003210290) 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(0xc005c7cbd0, {0x7993d0, 0xc0001d0300}) pkg/sentry/fsimpl/kernfs/kernfs.go:286 +0x7e gvisor.dev/gvisor/pkg/sentry/kernel.(*Cgroup).decRef(0xc008b82e28) pkg/sentry/kernel/cgroup.go:121 +0x5c gvisor.dev/gvisor/pkg/sentry/kernel.(*TaskSet).newTask(0xc0001ca1c0, {0x799898, 0xc002b53500}, 0xc000645310) pkg/sentry/kernel/task_start.go:244 +0x159b gvisor.dev/gvisor/pkg/sentry/kernel.(*TaskSet).NewTask(0xc002b53500?, {0x799898, 0xc002b53500}, 0xc000645310) pkg/sentry/kernel/task_start.go:127 +0xeb gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc002b53500, 0xc0006453f0) pkg/sentry/kernel/task_clone.go:219 +0x1e06 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x1127857?, 0x1200011, 0x0, 0x0, 0x55b51d4b26d0, 0x0) pkg/sentry/syscalls/linux/sys_thread.go:216 +0x145 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0xc000645578?, {{0x1200011}, {0x0}, {0x0}, {0x55b51d4b26d0}, {0x0}, {0x55b51d4b2400}}) pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x4e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc002b53500, 0x38, {{0x1200011}, {0x0}, {0x0}, {0x55b51d4b26d0}, {0x0}, {0x55b51d4b2400}}) pkg/sentry/kernel/task_syscall.go:142 +0x9b9 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc002b53500, 0x0?, {{0x1200011}, {0x0}, {0x0}, {0x55b51d4b26d0}, {0x0}, {0x55b51d4b2400}}) pkg/sentry/kernel/task_syscall.go:322 +0x7d gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc003028ff0?, 0xc003180f70?, {{0x1200011}, {0x0}, {0x0}, {0x55b51d4b26d0}, {0x0}, {0x55b51d4b2400}}) pkg/sentry/kernel/task_syscall.go:282 +0x8f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc002b53500) pkg/sentry/kernel/task_syscall.go:257 +0x4c5 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc002b53500?, 0xc002b53500) pkg/sentry/kernel/task_run.go:253 +0x1965 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc002b53500, 0xb63) 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