panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x64162c] goroutine 32028 gp=0x40008c2c40 m=7 mp=0x4000356308 [running]: panic({0xcd9020?, 0x1b7e880?}) bazel-out/aarch64-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x154 fp=0x400047f320 sp=0x400047f270 pc=0x84234 runtime.panicmem(...) bazel-out/aarch64-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:262 runtime.sigpanic() bazel-out/aarch64-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/signal_unix.go:900 +0x300 fp=0x400047f380 sp=0x400047f320 pc=0x86a40 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendGroupSignal(0x0, 0x4001fc5380) pkg/sentry/kernel/task_signals.go:385 +0x2c fp=0x400047f3f0 sp=0x400047f390 pc=0x64162c gvisor.dev/gvisor/pkg/sentry/kernel.(*rlimitCPUSoftListener).NotifyTimer(0xfffeb847ba20?, 0x4001d94f70?) pkg/sentry/kernel/task_acct.go:151 +0x54 fp=0x400047f420 sp=0x400047f3f0 pc=0x626a74 gvisor.dev/gvisor/pkg/sentry/ktime.(*SyntheticTimer).Set(0x4001d94f70, {0x88?, {0x0?}, 0x1?}, 0x0) pkg/sentry/ktime/synthetic_timer.go:139 +0x204 fp=0x400047f4c0 sp=0x400047f420 pc=0x3f9444 gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).notifyRlimitCPUUpdated(0x4001d94808, 0x0) pkg/sentry/kernel/task_acct.go:103 +0x148 fp=0x400047f530 sp=0x400047f4c0 pc=0x626798 gvisor.dev/gvisor/pkg/sentry/kernel.(*Kernel).NewThreadGroup(0x400018b008, 0x40024d9880, 0x4005d18cd0, 0x0, 0x4005d18cf0) pkg/sentry/kernel/thread_group.go:308 +0x2ec fp=0x400047f580 sp=0x400047f530 pc=0x64b91c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0x4003f17908, 0x400047f938) pkg/sentry/kernel/task_clone.go:238 +0xf5c fp=0x400047f920 sp=0x400047f580 pc=0x62b38c gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x4003f17908?, 0x0?, 0x7?, 0xf4d2151f6398?, 0x0?, 0x20002700?) pkg/sentry/syscalls/linux/sys_thread.go:215 +0x84 fp=0x400047f9f0 sp=0x400047f920 pc=0x7da564 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0x4003f17908?, 0x1d?, {{0x800000}, {0x20002780}, {0x200027c0}, {0x20002800}, {0x20002840}, {0x0}}) pkg/sentry/syscalls/linux/sys_clone_arm64.go:36 +0x34 fp=0x400047fa30 sp=0x400047f9f0 pc=0x79e784 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0x4003f17908, 0xdc, {{0x800000}, {0x20002780}, {0x200027c0}, {0x20002800}, {0x20002840}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0x4e8 fp=0x400047fc60 sp=0x400047fa30 pc=0x6476b8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0x4003f17908, 0xdc, {{0x800000}, {0x20002780}, {0x200027c0}, {0x20002800}, {0x20002840}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x3c fp=0x400047fcc0 sp=0x400047fc60 pc=0x6485ec gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x4003f17908, 0xdc, {{0x800000}, {0x20002780}, {0x200027c0}, {0x20002800}, {0x20002840}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0x58 fp=0x400047fd10 sp=0x400047fcc0 pc=0x648268 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0x4001af0630?) pkg/sentry/kernel/task_syscall.go:258 +0x23c fp=0x400047fdf0 sp=0x400047fd10 pc=0x64801c gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x4005adac60?, 0x4003f17908) pkg/sentry/kernel/task_run.go:269 +0xce4 fp=0x400047ff10 sp=0x400047fdf0 pc=0x63dfc4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0x4003f17908, 0x2af2) pkg/sentry/kernel/task_run.go:97 +0x1d4 fp=0x400047ffb0 sp=0x400047ff10 pc=0x63cc54 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:400 +0x2c fp=0x400047ffd0 sp=0x400047ffb0 pc=0x64624c runtime.goexit({}) src/runtime/asm_arm64.s:1223 +0x4 fp=0x400047ffd0 sp=0x400047ffd0 pc=0x8d484 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 32220 pkg/sentry/kernel/task_start.go:400 +0xc4