panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xa7152e] goroutine 278285 gp=0xc008858540 m=32 mp=0xc002700008 [running]: panic({0x1192540?, 0x2071ac0?}) bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc00fd753a8 sp=0xc00fd752f8 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=0xc00fd75408 sp=0xc00fd753a8 pc=0x476719 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendGroupSignal(0x0, 0xc0090a8400) pkg/sentry/kernel/task_signals.go:385 +0x2e fp=0xc00fd75468 sp=0xc00fd75408 pc=0xa7152e gvisor.dev/gvisor/pkg/sentry/kernel.(*rlimitCPUSoftListener).NotifyTimer(0x70?, 0xc001a6c370?) pkg/sentry/kernel/task_acct.go:151 +0x45 fp=0xc00fd75490 sp=0xc00fd75468 pc=0xa55ac5 gvisor.dev/gvisor/pkg/sentry/ktime.(*SyntheticTimer).Set(0xc001a6c370, {0x0?, {0x1?}, 0x0?}, 0x0) pkg/sentry/ktime/synthetic_timer.go:139 +0x204 fp=0xc00fd75530 sp=0xc00fd75490 pc=0x812744 gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).notifyRlimitCPUUpdated(0xc001a6bc08, 0x0) pkg/sentry/kernel/task_acct.go:103 +0x10e fp=0xc00fd75598 sp=0xc00fd75530 pc=0xa557ee gvisor.dev/gvisor/pkg/sentry/kernel.(*Kernel).NewThreadGroup(0xc0001b3008, 0xc01087b420, 0xc00d607770, 0x0, 0xc00d607780) pkg/sentry/kernel/thread_group.go:308 +0x370 fp=0xc00fd755d8 sp=0xc00fd75598 pc=0xa7bd90 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc003305208, 0xc00fd75978) pkg/sentry/kernel/task_clone.go:238 +0x13e5 fp=0xc00fd75968 sp=0xc00fd755d8 pc=0xa5aba5 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0xbeb1c7?, 0xc003305208?, 0x56485fb59fa8?, 0x0?, 0x0?, 0x0?) pkg/sentry/syscalls/linux/sys_thread.go:215 +0xbd fp=0xc00fd75a38 sp=0xc00fd75968 pc=0xc2ed1d gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0xc003305208?, 0x7f72929a0000?, {{0xc0c0000}, {0x20000420}, {0x20000440}, {0x20000480}, {0x200004c0}, {0x200004c0}}) pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x2c fp=0xc00fd75a78 sp=0xc00fd75a38 pc=0xbe7c8c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc003305208, 0x38, {{0xc0c0000}, {0x20000420}, {0x20000440}, {0x20000480}, {0x200004c0}, {0x200004c0}}) pkg/sentry/kernel/task_syscall.go:143 +0x657 fp=0xc00fd75ca8 sp=0xc00fd75a78 pc=0xa77897 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc003305208, 0x38, {{0xc0c0000}, {0x20000420}, {0x20000440}, {0x20000480}, {0x200004c0}, {0x200004c0}}) pkg/sentry/kernel/task_syscall.go:323 +0x45 fp=0xc00fd75d00 sp=0xc00fd75ca8 pc=0xa78a05 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc003305208, 0x38, {{0xc0c0000}, {0x20000420}, {0x20000440}, {0x20000480}, {0x200004c0}, {0x200004c0}}) pkg/sentry/kernel/task_syscall.go:283 +0x65 fp=0xc00fd75d50 sp=0xc00fd75d00 pc=0xa78705 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0055e51e0?) pkg/sentry/kernel/task_syscall.go:258 +0x2a5 fp=0xc00fd75e28 sp=0xc00fd75d50 pc=0xa78485 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc01153d200?, 0xc003305208) pkg/sentry/kernel/task_run.go:269 +0xf17 fp=0xc00fd75f30 sp=0xc00fd75e28 pc=0xa6dd97 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc003305208, 0x8436) pkg/sentry/kernel/task_run.go:97 +0x214 fp=0xc00fd75fc0 sp=0xc00fd75f30 pc=0xa6c7f4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:400 +0x25 fp=0xc00fd75fe0 sp=0xc00fd75fc0 pc=0xa762a5 runtime.goexit({}) src/runtime/asm_amd64.s:1700 +0x1 fp=0xc00fd75fe8 sp=0xc00fd75fe0 pc=0x47d0c1 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 278266 pkg/sentry/kernel/task_start.go:400 +0xc5