panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x6d7d48] goroutine 1014 gp=0x40011548c0 m=13 mp=0x400072ee08 [running]: panic({0xdd9280?, 0x1e9d520?}) bazel-out/aarch64-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x154 fp=0x400080f310 sp=0x400080f260 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=0x400080f370 sp=0x400080f310 pc=0x86a40 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendGroupSignal(0x0, 0x4000b5e000) pkg/sentry/kernel/task_signals.go:385 +0x38 fp=0x400080f3e0 sp=0x400080f380 pc=0x6d7d48 gvisor.dev/gvisor/pkg/sentry/kernel.(*rlimitCPUSoftListener).NotifyTimer(0x1?, 0x4001461370?) pkg/sentry/kernel/task_acct.go:151 +0x68 fp=0x400080f410 sp=0x400080f3e0 pc=0x6b9898 gvisor.dev/gvisor/pkg/sentry/ktime.(*SyntheticTimer).Set(0x4001461370, {0x0?, {0x400080f528?}, 0x6e3cb0?}, 0x0) pkg/sentry/ktime/synthetic_timer.go:139 +0x224 fp=0x400080f4b0 sp=0x400080f410 pc=0x43f0b4 gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).notifyRlimitCPUUpdated(0x4001460c08, 0x0) pkg/sentry/kernel/task_acct.go:103 +0x130 fp=0x400080f530 sp=0x400080f4b0 pc=0x6b9540 gvisor.dev/gvisor/pkg/sentry/kernel.(*Kernel).NewThreadGroup(0x4000205008, 0x400168a770, 0x40007c60f0, 0x0, 0x40007c6110) pkg/sentry/kernel/thread_group.go:308 +0x328 fp=0x400080f580 sp=0x400080f530 pc=0x6e3e68 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0x4000eaa588, 0x400080f938) pkg/sentry/kernel/task_clone.go:238 +0x1030 fp=0x400080f920 sp=0x400080f580 pc=0x6beb60 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x4001370010?, 0x863f80?, 0x400015cc00?, 0xd76d3fd22398?, 0xeafa82fa78b8?, 0x56af0?) pkg/sentry/syscalls/linux/sys_thread.go:215 +0x90 fp=0x400080f9f0 sp=0x400080f920 pc=0x896310 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0x4000eaa588?, 0xd7?, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_clone_arm64.go:36 +0x68 fp=0x400080fa30 sp=0x400080f9f0 pc=0x85f4f8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0x4000eaa588, 0xdc, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0x664 fp=0x400080fc60 sp=0x400080fa30 pc=0x6dec74 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0x4000eaa588, 0xdc, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x48 fp=0x400080fcc0 sp=0x400080fc60 pc=0x6dff38 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x4000eaa588, 0xdc, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0x7c fp=0x400080fd10 sp=0x400080fcc0 pc=0x6dfafc gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0x4001438a50?) pkg/sentry/kernel/task_syscall.go:258 +0x2e8 fp=0x400080fdf0 sp=0x400080fd10 pc=0x6df828 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x4000c994d0?, 0x4000eaa588) pkg/sentry/kernel/task_run.go:269 +0x10ac fp=0x400080ff10 sp=0x400080fdf0 pc=0x6d3c8c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0x4000eaa588, 0x45) pkg/sentry/kernel/task_run.go:97 +0x250 fp=0x400080ffb0 sp=0x400080ff10 pc=0x6d2530 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:400 +0x2c fp=0x400080ffd0 sp=0x400080ffb0 pc=0x6dd43c runtime.goexit({}) src/runtime/asm_arm64.s:1223 +0x4 fp=0x400080ffd0 sp=0x400080ffd0 pc=0x8d484 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 1010 pkg/sentry/kernel/task_start.go:400 +0xd8