panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x975381]

goroutine 51945 gp=0xc001748380 m=18 mp=0xc0006e9c08 [running]:
panic({0x12ad7c0?, 0x236f6b0?})
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc000aa1908 sp=0xc000aa1858 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=0xc000aa1968 sp=0xc000aa1908 pc=0x476719
gvisor.dev/gvisor/pkg/sentry/mm.vmaIterator.Start(...)
	bazel-out/k8-fastbuild/bin/pkg/sentry/mm/vma_set.go:1476
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).madviseMutateVMAs(0xc00250c008, 0x447286?, 0x86ac726dff2f4713, 0xc000aa1a28)
	pkg/sentry/mm/syscalls.go:1264 +0x201 fp=0xc000aa1a08 sp=0xc000aa1968 pc=0x975381
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).SetDontFork(0x300000002?, 0xc000aa1ac0?, 0x474a0e?, 0x80?)
	pkg/sentry/mm/syscalls.go:1292 +0x33 fp=0xc000aa1a48 sp=0xc000aa1a08 pc=0x9756f3
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Madvise(0x49a099?, 0xc000aa1ad0?, {{0x20bdc000}, {0x86ac726dff2f4713}, {0xa}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_mmap.go:186 +0xd5 fp=0xc000aa1a78 sp=0xc000aa1a48 pc=0xcd4495
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00230cc88, 0x1c, {{0x20bdc000}, {0x86ac726dff2f4713}, {0xa}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x80b fp=0xc000aa1ca8 sp=0xc000aa1a78 pc=0xb1e24b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00230cc88, 0x1c, {{0x20bdc000}, {0x86ac726dff2f4713}, {0xa}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x4e fp=0xc000aa1d00 sp=0xc000aa1ca8 pc=0xb1f7ee
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc00230cc88, 0x1c, {{0x20bdc000}, {0x86ac726dff2f4713}, {0xa}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x7d fp=0xc000aa1d50 sp=0xc000aa1d00 pc=0xb1f39d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0017eb930?)
	pkg/sentry/kernel/task_syscall.go:258 +0x349 fp=0xc000aa1e28 sp=0xc000aa1d50 pc=0xb1f089
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc00319b4d0?, 0xc00230cc88)
	pkg/sentry/kernel/task_run.go:269 +0x1325 fp=0xc000aa1f38 sp=0xc000aa1e28 pc=0xb128e5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00230cc88, 0x1421)
	pkg/sentry/kernel/task_run.go:97 +0x27d fp=0xc000aa1fc0 sp=0xc000aa1f38 pc=0xb10efd
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:400 +0x25 fp=0xc000aa1fe0 sp=0xc000aa1fc0 pc=0xb1c7c5
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000aa1fe8 sp=0xc000aa1fe0 pc=0x47d0c1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 51992
	pkg/sentry/kernel/task_start.go:400 +0xd9