panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xb16cd8] goroutine 756 gp=0xc000c7cc40 m=25 mp=0xc000d90008 [running]: panic({0x12ad7a0?, 0x236f6b0?}) bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc00128f390 sp=0xc00128f2e0 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=0xc00128f3f0 sp=0xc00128f390 pc=0x476719 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendGroupSignal(0x0, 0xc00138c180) pkg/sentry/kernel/task_signals.go:385 +0x38 fp=0xc00128f450 sp=0xc00128f3f0 pc=0xb16cd8 gvisor.dev/gvisor/pkg/sentry/kernel.(*rlimitCPUSoftListener).NotifyTimer(0x10000c2cad8?, 0xc001a26f70?) pkg/sentry/kernel/task_acct.go:151 +0x57 fp=0xc00128f478 sp=0xc00128f450 pc=0xaf6977 gvisor.dev/gvisor/pkg/sentry/ktime.(*SyntheticTimer).Set(0xc001a26f70, {0x0?, {0x85aa38?}, 0x0?}, 0x0) pkg/sentry/ktime/synthetic_timer.go:139 +0x256 fp=0xc00128f518 sp=0xc00128f478 pc=0x85c836 gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).notifyRlimitCPUUpdated(0xc001a26808, 0x0) pkg/sentry/kernel/task_acct.go:103 +0x145 fp=0xc00128f590 sp=0xc00128f518 pc=0xaf6685 gvisor.dev/gvisor/pkg/sentry/kernel.(*Kernel).NewThreadGroup(0xc00017d008, 0xc0002f3260, 0xc000c2fb20, 0x0, 0xc000c2fb40) pkg/sentry/kernel/thread_group.go:308 +0x3ac fp=0xc00128f5d0 sp=0xc00128f590 pc=0xb23a0c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc000d58588, 0xc00128f978) pkg/sentry/kernel/task_clone.go:238 +0x143b fp=0xc00128f968 sp=0xc00128f5d0 pc=0xafc47b gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x0?, 0x140000?, 0x556fe69e3fa8?, 0xf4240?, 0x556fe69e3fa0?, 0xc00128fa38?) pkg/sentry/syscalls/linux/sys_thread.go:215 +0xbd fp=0xc00128fa38 sp=0xc00128f968 pc=0xcfdbdd gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0xc000d58588?, 0xc00128f8f8?, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x68 fp=0xc00128fa78 sp=0xc00128fa38 pc=0xcbdc28 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000d58588, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0x80b fp=0xc00128fca8 sp=0xc00128fa78 pc=0xb1e2ab gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000d58588, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x4e fp=0xc00128fd00 sp=0xc00128fca8 pc=0xb1f84e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000d58588, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0x7d fp=0xc00128fd50 sp=0xc00128fd00 pc=0xb1f3fd gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc001b1e000?) pkg/sentry/kernel/task_syscall.go:258 +0x349 fp=0xc00128fe28 sp=0xc00128fd50 pc=0xb1f0e9 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0003fd560?, 0xc000d58588) pkg/sentry/kernel/task_run.go:269 +0x1325 fp=0xc00128ff38 sp=0xc00128fe28 pc=0xb12945 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000d58588, 0x4c) pkg/sentry/kernel/task_run.go:97 +0x27d fp=0xc00128ffc0 sp=0xc00128ff38 pc=0xb10f5d gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:400 +0x25 fp=0xc00128ffe0 sp=0xc00128ffc0 pc=0xb1c825 runtime.goexit({}) src/runtime/asm_amd64.s:1700 +0x1 fp=0xc00128ffe8 sp=0xc00128ffe0 pc=0x47d0c1 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 807 pkg/sentry/kernel/task_start.go:400 +0xd9