panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x6d7d08] goroutine 1406 gp=0x4000aa6e00 m=22 mp=0x4000c92008 [running]: panic({0xdd9280?, 0x1e9d520?}) bazel-out/aarch64-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x154 fp=0x40010bf310 sp=0x40010bf260 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=0x40010bf370 sp=0x40010bf310 pc=0x86a40 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendGroupSignal(0x0, 0x4001558e80) pkg/sentry/kernel/task_signals.go:385 +0x38 fp=0x40010bf3e0 sp=0x40010bf380 pc=0x6d7d08 gvisor.dev/gvisor/pkg/sentry/kernel.(*rlimitCPUSoftListener).NotifyTimer(0x1?, 0x400141e370?) pkg/sentry/kernel/task_acct.go:151 +0x68 fp=0x40010bf410 sp=0x40010bf3e0 pc=0x6b9858 gvisor.dev/gvisor/pkg/sentry/ktime.(*SyntheticTimer).Set(0x400141e370, {0x0?, {0x40010bf528?}, 0x6e3c70?}, 0x0) pkg/sentry/ktime/synthetic_timer.go:139 +0x224 fp=0x40010bf4b0 sp=0x40010bf410 pc=0x43f0b4 gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).notifyRlimitCPUUpdated(0x400141dc08, 0x0) pkg/sentry/kernel/task_acct.go:103 +0x130 fp=0x40010bf530 sp=0x40010bf4b0 pc=0x6b9500 gvisor.dev/gvisor/pkg/sentry/kernel.(*Kernel).NewThreadGroup(0x400017d008, 0x4000cf84d0, 0x400046d7b0, 0x0, 0x400046d7c0) pkg/sentry/kernel/thread_group.go:308 +0x328 fp=0x40010bf580 sp=0x40010bf530 pc=0x6e3e28 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0x4001603208, 0x40010bf938) pkg/sentry/kernel/task_clone.go:238 +0x1030 fp=0x40010bf920 sp=0x40010bf580 pc=0x6beb20 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x40010bfb74?, 0x0?, 0x40010bfa68?, 0xab35c?, 0x4000aa6e00?, 0x200000003?) pkg/sentry/syscalls/linux/sys_thread.go:215 +0x90 fp=0x40010bf9f0 sp=0x40010bf920 pc=0x8962a0 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0x40010bfab8?, 0x14e148?, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_clone_arm64.go:36 +0x68 fp=0x40010bfa30 sp=0x40010bf9f0 pc=0x85f488 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0x4001603208, 0xdc, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0x664 fp=0x40010bfc60 sp=0x40010bfa30 pc=0x6dec34 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0x4001603208, 0xdc, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x48 fp=0x40010bfcc0 sp=0x40010bfc60 pc=0x6dfef8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x4001603208, 0xdc, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0x7c fp=0x40010bfd10 sp=0x40010bfcc0 pc=0x6dfabc gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0x400135b930?) pkg/sentry/kernel/task_syscall.go:258 +0x2e8 fp=0x40010bfdf0 sp=0x40010bfd10 pc=0x6df7e8 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x400161d560?, 0x4001603208) pkg/sentry/kernel/task_run.go:269 +0x10ac fp=0x40010bff10 sp=0x40010bfdf0 pc=0x6d3c4c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0x4001603208, 0x143) pkg/sentry/kernel/task_run.go:97 +0x250 fp=0x40010bffb0 sp=0x40010bff10 pc=0x6d24f0 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:400 +0x2c fp=0x40010bffd0 sp=0x40010bffb0 pc=0x6dd3fc runtime.goexit({}) src/runtime/asm_arm64.s:1223 +0x4 fp=0x40010bffd0 sp=0x40010bffd0 pc=0x8d484 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 1736 pkg/sentry/kernel/task_start.go:400 +0xd8