panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x6d7d48] goroutine 712 gp=0x4000bfce00 m=18 mp=0x40004c2308 [running]: panic({0xdd9280?, 0x1e9d520?}) bazel-out/aarch64-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x154 fp=0x4000cb7310 sp=0x4000cb7260 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=0x4000cb7370 sp=0x4000cb7310 pc=0x86a40 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendGroupSignal(0x0, 0x400082d200) pkg/sentry/kernel/task_signals.go:385 +0x38 fp=0x4000cb73e0 sp=0x4000cb7380 pc=0x6d7d48 gvisor.dev/gvisor/pkg/sentry/kernel.(*rlimitCPUSoftListener).NotifyTimer(0x1?, 0x4000ef8370?) pkg/sentry/kernel/task_acct.go:151 +0x68 fp=0x4000cb7410 sp=0x4000cb73e0 pc=0x6b9898 gvisor.dev/gvisor/pkg/sentry/ktime.(*SyntheticTimer).Set(0x4000ef8370, {0x0?, {0x4000cb7528?}, 0x6e3cb0?}, 0x0) pkg/sentry/ktime/synthetic_timer.go:139 +0x224 fp=0x4000cb74b0 sp=0x4000cb7410 pc=0x43f0b4 gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).notifyRlimitCPUUpdated(0x4000ef7c08, 0x0) pkg/sentry/kernel/task_acct.go:103 +0x130 fp=0x4000cb7530 sp=0x4000cb74b0 pc=0x6b9540 gvisor.dev/gvisor/pkg/sentry/kernel.(*Kernel).NewThreadGroup(0x40001cb008, 0x400190e460, 0x4000b87080, 0x0, 0x4000b870a0) pkg/sentry/kernel/thread_group.go:308 +0x328 fp=0x4000cb7580 sp=0x4000cb7530 pc=0x6e3e68 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0x4000fa5908, 0x4000cb7938) pkg/sentry/kernel/task_clone.go:238 +0x1030 fp=0x4000cb7920 sp=0x4000cb7580 pc=0x6beb60 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x4000cb7b74?, 0x0?, 0x4000cb7a68?, 0xab35c?, 0x4000bfce00?, 0x200000003?) pkg/sentry/syscalls/linux/sys_thread.go:215 +0x90 fp=0x4000cb79f0 sp=0x4000cb7920 pc=0x896310 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0x4000cb7ab8?, 0x14e148?, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_clone_arm64.go:36 +0x68 fp=0x4000cb7a30 sp=0x4000cb79f0 pc=0x85f4f8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0x4000fa5908, 0xdc, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0x664 fp=0x4000cb7c60 sp=0x4000cb7a30 pc=0x6dec74 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0x4000fa5908, 0xdc, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x48 fp=0x4000cb7cc0 sp=0x4000cb7c60 pc=0x6dff38 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x4000fa5908, 0xdc, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0x7c fp=0x4000cb7d10 sp=0x4000cb7cc0 pc=0x6dfafc gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0x400108be10?) pkg/sentry/kernel/task_syscall.go:258 +0x2e8 fp=0x4000cb7df0 sp=0x4000cb7d10 pc=0x6df828 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x4000a8bcb0?, 0x4000fa5908) pkg/sentry/kernel/task_run.go:269 +0x10ac fp=0x4000cb7f10 sp=0x4000cb7df0 pc=0x6d3c8c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0x4000fa5908, 0x44) pkg/sentry/kernel/task_run.go:97 +0x250 fp=0x4000cb7fb0 sp=0x4000cb7f10 pc=0x6d2530 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:400 +0x2c fp=0x4000cb7fd0 sp=0x4000cb7fb0 pc=0x6dd43c runtime.goexit({}) src/runtime/asm_arm64.s:1223 +0x4 fp=0x4000cb7fd0 sp=0x4000cb7fd0 pc=0x8d484 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 979 pkg/sentry/kernel/task_start.go:400 +0xd8