panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xfe74d3] goroutine 18221 gp=0xc000d00540 m=62 mp=0xc001d1ee08 [running]: panic({0x1c598a0?, 0x2c2cca0?}) bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc002d60d60 sp=0xc002d60cb0 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=0xc002d60dc0 sp=0xc002d60d60 pc=0x47adf9 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendGroupSignal(0x0, 0xc002e29700) pkg/sentry/kernel/task_signals.go:385 +0x53 fp=0xc002d60e50 sp=0xc002d60dc0 pc=0xfe74d3 gvisor.dev/gvisor/pkg/sentry/kernel.(*rlimitCPUSoftListener).NotifyTimer(0xc00144d3b0, 0xc00144d370?) pkg/sentry/kernel/task_acct.go:151 +0xea fp=0xc002d60e80 sp=0xc002d60e50 pc=0xfb2a2a gvisor.dev/gvisor/pkg/sentry/ktime.(*SyntheticTimer).Set(0xc00144d370, {0x0?, {0x0?}, 0xc003769490?}, 0x0) pkg/sentry/ktime/synthetic_timer.go:139 +0x342 fp=0xc002d60f58 sp=0xc002d60e80 pc=0xb71562 gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).notifyRlimitCPUUpdated(0xc00144cc08, 0x0) pkg/sentry/kernel/task_acct.go:103 +0x18a fp=0xc002d61000 sp=0xc002d60f58 pc=0xfb250a gvisor.dev/gvisor/pkg/sentry/kernel.(*Kernel).NewThreadGroup(0xc0001fd008, 0xc003f0f0a0, 0xc002c49e10, 0x0, 0xc002c49e30) pkg/sentry/kernel/thread_group.go:308 +0x709 fp=0xc002d61078 sp=0xc002d61000 pc=0xffdd49 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc0020e7208, 0xc002d615a0) pkg/sentry/kernel/task_clone.go:238 +0x217a fp=0xc002d61580 sp=0xc002d61078 pc=0xfbb5ba gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0xc0020e7208, 0x8044200, 0x0, 0x0, 0x0, 0x0) pkg/sentry/syscalls/linux/sys_thread.go:215 +0x130 fp=0xc002d61670 sp=0xc002d61580 pc=0x12c7050 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0xc0020e7208, 0x0?, {{0x8044200}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0xef fp=0xc002d616e8 sp=0xc002d61670 pc=0x126332f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0020e7208, 0x38, {{0x8044200}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0xb9f fp=0xc002d61998 sp=0xc002d616e8 pc=0xff463f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0020e7208, 0x38, {{0x8044200}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x85 fp=0xc002d61a40 sp=0xc002d61998 pc=0xff6765 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0020e7208, 0x38, {{0x8044200}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0xc7 fp=0xc002d61ab0 sp=0xc002d61a40 pc=0xff6087 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0020e7208) pkg/sentry/kernel/task_syscall.go:258 +0x54a fp=0xc002d61bd0 sp=0xc002d61ab0 pc=0xff5bea gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0020e7208?, 0xc0020e7208) pkg/sentry/kernel/task_run.go:269 +0x2295 fp=0xc002d61e78 sp=0xc002d61bd0 pc=0xfe0675 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0020e7208, 0xc29) pkg/sentry/kernel/task_run.go:97 +0x41b fp=0xc002d61fb0 sp=0xc002d61e78 pc=0xfdd99b gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:400 +0x45 fp=0xc002d61fe0 sp=0xc002d61fb0 pc=0xff1f45 runtime.goexit({}) src/runtime/asm_amd64.s:1700 +0x1 fp=0xc002d61fe8 sp=0xc002d61fe0 pc=0x4819a1 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 18248 pkg/sentry/kernel/task_start.go:400 +0x185