panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xb16cd8] goroutine 2202 gp=0xc001554540 m=4 mp=0xc000180008 [running]: panic({0x12ad960?, 0x236f7d0?}) bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc000a71390 sp=0xc000a712e0 pc=0x473fe8 runtime.panicmem(...) bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:262 runtime.sigpanic() bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/signal_unix.go:900 +0x359 fp=0xc000a713f0 sp=0xc000a71390 pc=0x476719 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendGroupSignal(0x0, 0xc0013ae100) pkg/sentry/kernel/task_signals.go:385 +0x38 fp=0xc000a71450 sp=0xc000a713f0 pc=0xb16cd8 gvisor.dev/gvisor/pkg/sentry/kernel.(*rlimitCPUSoftListener).NotifyTimer(0x10001c041d8?, 0xc000dc2770?) pkg/sentry/kernel/task_acct.go:151 +0x57 fp=0xc000a71478 sp=0xc000a71450 pc=0xaf6977 gvisor.dev/gvisor/pkg/sentry/ktime.(*SyntheticTimer).Set(0xc000dc2770, {0x0?, {0x85aa38?}, 0x0?}, 0x0) pkg/sentry/ktime/synthetic_timer.go:139 +0x256 fp=0xc000a71518 sp=0xc000a71478 pc=0x85c836 gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).notifyRlimitCPUUpdated(0xc000dc2008, 0x0) pkg/sentry/kernel/task_acct.go:103 +0x145 fp=0xc000a71590 sp=0xc000a71518 pc=0xaf6685 gvisor.dev/gvisor/pkg/sentry/kernel.(*Kernel).NewThreadGroup(0xc000271008, 0xc001627180, 0xc000ec81f0, 0x11, 0xc000ec8200) pkg/sentry/kernel/thread_group.go:308 +0x3ac fp=0xc000a715d0 sp=0xc000a71590 pc=0xb23a0c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc001eec008, 0xc000a71978) pkg/sentry/kernel/task_clone.go:238 +0x143b fp=0xc000a71968 sp=0xc000a715d0 pc=0xafc47b gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x0?, 0xc001554540?, 0x300000002?, 0xc000a71ac0?, 0x474a0e?, 0xc001554540?) pkg/sentry/syscalls/linux/sys_thread.go:215 +0xbd fp=0xc000a71a38 sp=0xc000a71968 pc=0xcfe1fd gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0x49a099?, 0xc000a71ad0?, {{0x11}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x68 fp=0xc000a71a78 sp=0xc000a71a38 pc=0xcbe248 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc001eec008, 0x38, {{0x11}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0x80b fp=0xc000a71ca8 sp=0xc000a71a78 pc=0xb1e2ab gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc001eec008, 0x38, {{0x11}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x4e fp=0xc000a71d00 sp=0xc000a71ca8 pc=0xb1f84e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc001eec008, 0x38, {{0x11}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0x7d fp=0xc000a71d50 sp=0xc000a71d00 pc=0xb1f3fd gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0017149c0?) pkg/sentry/kernel/task_syscall.go:258 +0x349 fp=0xc000a71e28 sp=0xc000a71d50 pc=0xb1f0e9 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000708120?, 0xc001eec008) pkg/sentry/kernel/task_run.go:269 +0x1325 fp=0xc000a71f38 sp=0xc000a71e28 pc=0xb12945 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc001eec008, 0x17b) pkg/sentry/kernel/task_run.go:97 +0x27d fp=0xc000a71fc0 sp=0xc000a71f38 pc=0xb10f5d gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:400 +0x25 fp=0xc000a71fe0 sp=0xc000a71fc0 pc=0xb1c825 runtime.goexit({}) src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000a71fe8 sp=0xc000a71fe0 pc=0x47d0c1 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 2465 pkg/sentry/kernel/task_start.go:400 +0xd9