panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xfe6133] goroutine 299 gp=0xc000af7c00 m=28 mp=0xc000581508 [running]: panic({0x1c586e0?, 0x2c2cca0?}) bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc000f06d60 sp=0xc000f06cb0 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=0xc000f06dc0 sp=0xc000f06d60 pc=0x47adf9 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendGroupSignal(0x0, 0xc000a16380) pkg/sentry/kernel/task_signals.go:385 +0x53 fp=0xc000f06e50 sp=0xc000f06dc0 pc=0xfe6133 gvisor.dev/gvisor/pkg/sentry/kernel.(*rlimitCPUSoftListener).NotifyTimer(0xc0011a37b0, 0xc0011a3770?) pkg/sentry/kernel/task_acct.go:151 +0xea fp=0xc000f06e80 sp=0xc000f06e50 pc=0xfb168a gvisor.dev/gvisor/pkg/sentry/ktime.(*SyntheticTimer).Set(0xc0011a3770, {0x0?, {0x0?}, 0xc0007fe9e0?}, 0x0) pkg/sentry/ktime/synthetic_timer.go:139 +0x342 fp=0xc000f06f58 sp=0xc000f06e80 pc=0xb71562 gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).notifyRlimitCPUUpdated(0xc0011a3008, 0x0) pkg/sentry/kernel/task_acct.go:103 +0x18a fp=0xc000f07000 sp=0xc000f06f58 pc=0xfb116a gvisor.dev/gvisor/pkg/sentry/kernel.(*Kernel).NewThreadGroup(0xc000249008, 0xc0013aa150, 0xc000caef90, 0x0, 0xc000caefb0) pkg/sentry/kernel/thread_group.go:308 +0x709 fp=0xc000f07078 sp=0xc000f07000 pc=0xffc9a9 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc0013a6c88, 0xc000f075a0) pkg/sentry/kernel/task_clone.go:238 +0x217a fp=0xc000f07580 sp=0xc000f07078 pc=0xfba21a gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0xc0013a6c88, 0x6198a000, 0x0, 0x0, 0x0, 0x0) pkg/sentry/syscalls/linux/sys_thread.go:215 +0x130 fp=0xc000f07670 sp=0xc000f07580 pc=0x12c55d0 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0xc0013a6c88, 0x0?, {{0x6198a000}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0xef fp=0xc000f076e8 sp=0xc000f07670 pc=0x12618af gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0013a6c88, 0x38, {{0x6198a000}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0xb9f fp=0xc000f07998 sp=0xc000f076e8 pc=0xff329f gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0013a6c88, 0x38, {{0x6198a000}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x85 fp=0xc000f07a40 sp=0xc000f07998 pc=0xff53c5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0013a6c88, 0x38, {{0x6198a000}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0xc7 fp=0xc000f07ab0 sp=0xc000f07a40 pc=0xff4ce7 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0013a6c88) pkg/sentry/kernel/task_syscall.go:258 +0x54a fp=0xc000f07bd0 sp=0xc000f07ab0 pc=0xff484a gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0013a6c88?, 0xc0013a6c88) pkg/sentry/kernel/task_run.go:269 +0x2295 fp=0xc000f07e78 sp=0xc000f07bd0 pc=0xfdf2d5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0013a6c88, 0x46) pkg/sentry/kernel/task_run.go:97 +0x41b fp=0xc000f07fb0 sp=0xc000f07e78 pc=0xfdc5fb gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:400 +0x45 fp=0xc000f07fe0 sp=0xc000f07fb0 pc=0xff0ba5 runtime.goexit({}) src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000f07fe8 sp=0xc000f07fe0 pc=0x4819a1 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 406 pkg/sentry/kernel/task_start.go:400 +0x185