panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xfe7453] goroutine 387 gp=0xc000ca08c0 m=25 mp=0xc001400008 [running]: panic({0x1c597a0?, 0x2c2bca0?}) bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc000f98d60 sp=0xc000f98cb0 pc=0x478628 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=0xc000f98dc0 sp=0xc000f98d60 pc=0x47adf9 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendGroupSignal(0x0, 0xc000f92180) pkg/sentry/kernel/task_signals.go:385 +0x53 fp=0xc000f98e50 sp=0xc000f98dc0 pc=0xfe7453 gvisor.dev/gvisor/pkg/sentry/kernel.(*rlimitCPUSoftListener).NotifyTimer(0xc0010227b0, 0xc001022770?) pkg/sentry/kernel/task_acct.go:151 +0xea fp=0xc000f98e80 sp=0xc000f98e50 pc=0xfb29aa gvisor.dev/gvisor/pkg/sentry/ktime.(*SyntheticTimer).Set(0xc001022770, {0x0?, {0x0?}, 0xc0006660e0?}, 0x0) pkg/sentry/ktime/synthetic_timer.go:139 +0x342 fp=0xc000f98f58 sp=0xc000f98e80 pc=0xb71562 gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).notifyRlimitCPUUpdated(0xc001022008, 0x0) pkg/sentry/kernel/task_acct.go:103 +0x18a fp=0xc000f99000 sp=0xc000f98f58 pc=0xfb248a gvisor.dev/gvisor/pkg/sentry/kernel.(*Kernel).NewThreadGroup(0xc000275008, 0xc0013961c0, 0xc000f854d0, 0x0, 0xc000f854e0) pkg/sentry/kernel/thread_group.go:308 +0x709 fp=0xc000f99078 sp=0xc000f99000 pc=0xffdcc9 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc000fd6008, 0xc000f995a0) pkg/sentry/kernel/task_clone.go:238 +0x217a fp=0xc000f99580 sp=0xc000f99078 pc=0xfbb53a gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0xc000fd6008, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/syscalls/linux/sys_thread.go:215 +0x130 fp=0xc000f99670 sp=0xc000f99580 pc=0x12c6f50 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0xc000fd6008, 0x0?, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0xef fp=0xc000f996e8 sp=0xc000f99670 pc=0x126322f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000fd6008, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0xb9f fp=0xc000f99998 sp=0xc000f996e8 pc=0xff45bf gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000fd6008, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x85 fp=0xc000f99a40 sp=0xc000f99998 pc=0xff66e5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000fd6008, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0xc7 fp=0xc000f99ab0 sp=0xc000f99a40 pc=0xff6007 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000fd6008) pkg/sentry/kernel/task_syscall.go:258 +0x54a fp=0xc000f99bd0 sp=0xc000f99ab0 pc=0xff5b6a gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000fd6008?, 0xc000fd6008) pkg/sentry/kernel/task_run.go:269 +0x2295 fp=0xc000f99e78 sp=0xc000f99bd0 pc=0xfe05f5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000fd6008, 0x3d) pkg/sentry/kernel/task_run.go:97 +0x41b fp=0xc000f99fb0 sp=0xc000f99e78 pc=0xfdd91b gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:400 +0x45 fp=0xc000f99fe0 sp=0xc000f99fb0 pc=0xff1ec5 runtime.goexit({}) src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000f99fe8 sp=0xc000f99fe0 pc=0x4819a1 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 371 pkg/sentry/kernel/task_start.go:400 +0x185