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

goroutine 128756 gp=0xc009276e00 m=36 mp=0xc00181e008 [running]:
panic({0x12ad7c0?, 0x236f6b0?})
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc000c8d908 sp=0xc000c8d858 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=0xc000c8d968 sp=0xc000c8d908 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(0xc009fa0008, 0xffffffff?, 0x86ac726dff2f4713, 0xc000c8da28)
	pkg/sentry/mm/syscalls.go:1264 +0x201 fp=0xc000c8da08 sp=0xc000c8d968 pc=0x975381
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).SetDontFork(0x1?, 0x0?, 0x40000000?, 0xa8?)
	pkg/sentry/mm/syscalls.go:1292 +0x33 fp=0xc000c8da48 sp=0xc000c8da08 pc=0x9756f3
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Madvise(0xc000c8db60?, 0x6fd16c?, {{0x20bdc000}, {0x86ac726dff2f4713}, {0xa}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_mmap.go:186 +0xd5 fp=0xc000c8da78 sp=0xc000c8da48 pc=0xcd4495
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc006ebac88, 0x1c, {{0x20bdc000}, {0x86ac726dff2f4713}, {0xa}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x80b fp=0xc000c8dca8 sp=0xc000c8da78 pc=0xb1e24b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc006ebac88, 0x1c, {{0x20bdc000}, {0x86ac726dff2f4713}, {0xa}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x4e fp=0xc000c8dd00 sp=0xc000c8dca8 pc=0xb1f7ee
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc006ebac88, 0x1c, {{0x20bdc000}, {0x86ac726dff2f4713}, {0xa}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x7d fp=0xc000c8dd50 sp=0xc000c8dd00 pc=0xb1f39d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc002ce8420?)
	pkg/sentry/kernel/task_syscall.go:258 +0x349 fp=0xc000c8de28 sp=0xc000c8dd50 pc=0xb1f089
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc007ba75f0?, 0xc006ebac88)
	pkg/sentry/kernel/task_run.go:269 +0x1325 fp=0xc000c8df38 sp=0xc000c8de28 pc=0xb128e5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc006ebac88, 0x6b48)
	pkg/sentry/kernel/task_run.go:97 +0x27d fp=0xc000c8dfc0 sp=0xc000c8df38 pc=0xb10efd
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:400 +0x25 fp=0xc000c8dfe0 sp=0xc000c8dfc0 pc=0xb1c7c5
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000c8dfe8 sp=0xc000c8dfe0 pc=0x47d0c1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 128740
	pkg/sentry/kernel/task_start.go:400 +0xd9