panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xb16cd8]

goroutine 63468 gp=0xc0014fce00 m=58 mp=0xc0020df508 [running]:
panic({0x12ad7a0?, 0x236f6b0?})
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc000755390 sp=0xc0007552e0 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=0xc0007553f0 sp=0xc000755390 pc=0x476719
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendGroupSignal(0x0, 0xc003b04c80)
	pkg/sentry/kernel/task_signals.go:385 +0x38 fp=0xc000755450 sp=0xc0007553f0 pc=0xb16cd8
gvisor.dev/gvisor/pkg/sentry/kernel.(*rlimitCPUSoftListener).NotifyTimer(0x10000b49978?, 0xc000d46b70?)
	pkg/sentry/kernel/task_acct.go:151 +0x57 fp=0xc000755478 sp=0xc000755450 pc=0xaf6977
gvisor.dev/gvisor/pkg/sentry/ktime.(*SyntheticTimer).Set(0xc000d46b70, {0x0?, {0x85aa38?}, 0x0?}, 0x0)
	pkg/sentry/ktime/synthetic_timer.go:139 +0x256 fp=0xc000755518 sp=0xc000755478 pc=0x85c836
gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).notifyRlimitCPUUpdated(0xc000d46408, 0x0)
	pkg/sentry/kernel/task_acct.go:103 +0x145 fp=0xc000755590 sp=0xc000755518 pc=0xaf6685
gvisor.dev/gvisor/pkg/sentry/kernel.(*Kernel).NewThreadGroup(0xc00027b008, 0xc002913d50, 0xc0014e8e90, 0x0, 0xc0014e8eb0)
	pkg/sentry/kernel/thread_group.go:308 +0x3ac fp=0xc0007555d0 sp=0xc000755590 pc=0xb23a0c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc00361d208, 0xc000755978)
	pkg/sentry/kernel/task_clone.go:238 +0x143b fp=0xc000755968 sp=0xc0007555d0 pc=0xafc47b
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x0?, 0xc0014fce00?, 0x300000002?, 0xc000755ac0?, 0x474a0e?, 0xc0014fce00?)
	pkg/sentry/syscalls/linux/sys_thread.go:215 +0xbd fp=0xc000755a38 sp=0xc000755968 pc=0xcfdbdd
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0x49a099?, 0xc000755ad0?, {{0xa1204000}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x68 fp=0xc000755a78 sp=0xc000755a38 pc=0xcbdc28
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00361d208, 0x38, {{0xa1204000}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x80b fp=0xc000755ca8 sp=0xc000755a78 pc=0xb1e2ab
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00361d208, 0x38, {{0xa1204000}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x4e fp=0xc000755d00 sp=0xc000755ca8 pc=0xb1f84e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc00361d208, 0x38, {{0xa1204000}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x7d fp=0xc000755d50 sp=0xc000755d00 pc=0xb1f3fd
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00427af70?)
	pkg/sentry/kernel/task_syscall.go:258 +0x349 fp=0xc000755e28 sp=0xc000755d50 pc=0xb1f0e9
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0010abb00?, 0xc00361d208)
	pkg/sentry/kernel/task_run.go:269 +0x1325 fp=0xc000755f38 sp=0xc000755e28 pc=0xb12945
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00361d208, 0x222a)
	pkg/sentry/kernel/task_run.go:97 +0x27d fp=0xc000755fc0 sp=0xc000755f38 pc=0xb10f5d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:400 +0x25 fp=0xc000755fe0 sp=0xc000755fc0 pc=0xb1c825
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000755fe8 sp=0xc000755fe0 pc=0x47d0c1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 64095
	pkg/sentry/kernel/task_start.go:400 +0xd9