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

goroutine 21087 gp=0xc000a47180 m=46 mp=0xc002acd508 [running]:
panic({0x12ad960?, 0x236f7d0?})
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc002f2d390 sp=0xc002f2d2e0 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=0xc002f2d3f0 sp=0xc002f2d390 pc=0x476719
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendGroupSignal(0x0, 0xc00237a780)
	pkg/sentry/kernel/task_signals.go:385 +0x38 fp=0xc002f2d450 sp=0xc002f2d3f0 pc=0xb16cd8
gvisor.dev/gvisor/pkg/sentry/kernel.(*rlimitCPUSoftListener).NotifyTimer(0x1000203a598?, 0xc001ac5f70?)
	pkg/sentry/kernel/task_acct.go:151 +0x57 fp=0xc002f2d478 sp=0xc002f2d450 pc=0xaf6977
gvisor.dev/gvisor/pkg/sentry/ktime.(*SyntheticTimer).Set(0xc001ac5f70, {0x0?, {0x85aa38?}, 0x0?}, 0x0)
	pkg/sentry/ktime/synthetic_timer.go:139 +0x256 fp=0xc002f2d518 sp=0xc002f2d478 pc=0x85c836
gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).notifyRlimitCPUUpdated(0xc001ac5808, 0x0)
	pkg/sentry/kernel/task_acct.go:103 +0x145 fp=0xc002f2d590 sp=0xc002f2d518 pc=0xaf6685
gvisor.dev/gvisor/pkg/sentry/kernel.(*Kernel).NewThreadGroup(0xc000271008, 0xc00229c3f0, 0xc002aa98c0, 0x0, 0xc002aa98e0)
	pkg/sentry/kernel/thread_group.go:308 +0x3ac fp=0xc002f2d5d0 sp=0xc002f2d590 pc=0xb23a0c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc0024bcc88, 0xc002f2d978)
	pkg/sentry/kernel/task_clone.go:238 +0x143b fp=0xc002f2d968 sp=0xc002f2d5d0 pc=0xafc47b
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x0?, 0xc000a47180?, 0x300000002?, 0xc003787ac0?, 0x474a0e?, 0xc000a47180?)
	pkg/sentry/syscalls/linux/sys_thread.go:215 +0xbd fp=0xc002f2da38 sp=0xc002f2d968 pc=0xcfe1fd
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0x49a099?, 0xc003787ad0?, {{0x88000}, {0x20000140}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x68 fp=0xc002f2da78 sp=0xc002f2da38 pc=0xcbe248
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0024bcc88, 0x38, {{0x88000}, {0x20000140}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x80b fp=0xc002f2dca8 sp=0xc002f2da78 pc=0xb1e2ab
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0024bcc88, 0x38, {{0x88000}, {0x20000140}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x4e fp=0xc002f2dd00 sp=0xc002f2dca8 pc=0xb1f84e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0024bcc88, 0x38, {{0x88000}, {0x20000140}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x7d fp=0xc002f2dd50 sp=0xc002f2dd00 pc=0xb1f3fd
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0033a6410?)
	pkg/sentry/kernel/task_syscall.go:258 +0x349 fp=0xc002f2de28 sp=0xc002f2dd50 pc=0xb1f0e9
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0006075f0?, 0xc0024bcc88)
	pkg/sentry/kernel/task_run.go:269 +0x1325 fp=0xc002f2df38 sp=0xc002f2de28 pc=0xb12945
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0024bcc88, 0xcb4)
	pkg/sentry/kernel/task_run.go:97 +0x27d fp=0xc002f2dfc0 sp=0xc002f2df38 pc=0xb10f5d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:400 +0x25 fp=0xc002f2dfe0 sp=0xc002f2dfc0 pc=0xb1c825
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc002f2dfe8 sp=0xc002f2dfe0 pc=0x47d0c1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 21089
	pkg/sentry/kernel/task_start.go:400 +0xd9