panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xb16c78]

goroutine 33826 gp=0xc000a18c40 m=17 mp=0xc00078b508 [running]:
panic({0x12ad7c0?, 0x236f6b0?})
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc000f99390 sp=0xc000f992e0 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=0xc000f993f0 sp=0xc000f99390 pc=0x476719
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendGroupSignal(0x0, 0xc001945200)
	pkg/sentry/kernel/task_signals.go:385 +0x38 fp=0xc000f99450 sp=0xc000f993f0 pc=0xb16c78
gvisor.dev/gvisor/pkg/sentry/kernel.(*rlimitCPUSoftListener).NotifyTimer(0x100033d56d8?, 0xc0021f9770?)
	pkg/sentry/kernel/task_acct.go:151 +0x57 fp=0xc000f99478 sp=0xc000f99450 pc=0xaf6917
gvisor.dev/gvisor/pkg/sentry/ktime.(*SyntheticTimer).Set(0xc0021f9770, {0x0?, {0x85aa38?}, 0x0?}, 0x0)
	pkg/sentry/ktime/synthetic_timer.go:139 +0x256 fp=0xc000f99518 sp=0xc000f99478 pc=0x85c836
gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).notifyRlimitCPUUpdated(0xc0021f9008, 0x0)
	pkg/sentry/kernel/task_acct.go:103 +0x145 fp=0xc000f99590 sp=0xc000f99518 pc=0xaf6625
gvisor.dev/gvisor/pkg/sentry/kernel.(*Kernel).NewThreadGroup(0xc000271008, 0xc003ab25b0, 0xc001533600, 0x0, 0xc001533610)
	pkg/sentry/kernel/thread_group.go:308 +0x3ac fp=0xc000f995d0 sp=0xc000f99590 pc=0xb239ac
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc002d00c88, 0xc000f99978)
	pkg/sentry/kernel/task_clone.go:238 +0x143b fp=0xc000f99968 sp=0xc000f995d0 pc=0xafc41b
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x0?, 0xc000a18c40?, 0x300000002?, 0xc0001f1ac0?, 0x474a0e?, 0xc000a18c40?)
	pkg/sentry/syscalls/linux/sys_thread.go:215 +0xbd fp=0xc000f99a38 sp=0xc000f99968 pc=0xcfdbdd
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0x49a099?, 0xc0001f1ad0?, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x68 fp=0xc000f99a78 sp=0xc000f99a38 pc=0xcbdc28
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc002d00c88, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x80b fp=0xc000f99ca8 sp=0xc000f99a78 pc=0xb1e24b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc002d00c88, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x4e fp=0xc000f99d00 sp=0xc000f99ca8 pc=0xb1f7ee
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc002d00c88, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x7d fp=0xc000f99d50 sp=0xc000f99d00 pc=0xb1f39d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc001cf6b60?)
	pkg/sentry/kernel/task_syscall.go:258 +0x349 fp=0xc000f99e28 sp=0xc000f99d50 pc=0xb1f089
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc00096db00?, 0xc002d00c88)
	pkg/sentry/kernel/task_run.go:269 +0x1325 fp=0xc000f99f38 sp=0xc000f99e28 pc=0xb128e5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc002d00c88, 0x13b2)
	pkg/sentry/kernel/task_run.go:97 +0x27d fp=0xc000f99fc0 sp=0xc000f99f38 pc=0xb10efd
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:400 +0x25 fp=0xc000f99fe0 sp=0xc000f99fc0 pc=0xb1c7c5
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000f99fe8 sp=0xc000f99fe0 pc=0x47d0c1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 33439
	pkg/sentry/kernel/task_start.go:400 +0xd9