panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x54bd68]

goroutine 55057 gp=0x40015fe540 m=37 mp=0x4001f47c08 [running]:
panic({0xdd9280?, 0x1e9d520?})
	bazel-out/aarch64-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x154 fp=0x4004a878b0 sp=0x4004a87800 pc=0x84234
runtime.panicmem(...)
	bazel-out/aarch64-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:262
runtime.sigpanic()
	bazel-out/aarch64-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/signal_unix.go:900 +0x300 fp=0x4004a87910 sp=0x4004a878b0 pc=0x86a40
gvisor.dev/gvisor/pkg/sentry/mm.vmaIterator.Start(...)
	bazel-out/aarch64-fastbuild/bin/pkg/sentry/mm/vma_set.go:1476
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).madviseMutateVMAs(0x4002f57008, 0x2e9848?, 0x86ac726dff2f4713, 0x4004a879e8)
	pkg/sentry/mm/syscalls.go:1264 +0x1c8 fp=0x4004a879c0 sp=0x4004a87920 pc=0x54bd68
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).SetDontFork(0x4004a87a58?, 0x2e9e6c?, 0x4001cc3600?, 0x2c?)
	pkg/sentry/mm/syscalls.go:1292 +0x3c fp=0x4004a87a00 sp=0x4004a879c0 pc=0x54c0cc
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Madvise(0x4001cc3600?, 0x696f24?, {{0x20bdc000}, {0x86ac726dff2f4713}, {0xa}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_mmap.go:186 +0xc8 fp=0x4004a87a30 sp=0x4004a87a00 pc=0x872c98
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0x40035b8008, 0xe9, {{0x20bdc000}, {0x86ac726dff2f4713}, {0xa}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x664 fp=0x4004a87c60 sp=0x4004a87a30 pc=0x6dec34
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0x40035b8008, 0xe9, {{0x20bdc000}, {0x86ac726dff2f4713}, {0xa}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x48 fp=0x4004a87cc0 sp=0x4004a87c60 pc=0x6dfef8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x40035b8008, 0xe9, {{0x20bdc000}, {0x86ac726dff2f4713}, {0xa}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x7c fp=0x4004a87d10 sp=0x4004a87cc0 pc=0x6dfabc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0x40049d64d0?)
	pkg/sentry/kernel/task_syscall.go:258 +0x2e8 fp=0x4004a87df0 sp=0x4004a87d10 pc=0x6df7e8
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x4002a121b0?, 0x40035b8008)
	pkg/sentry/kernel/task_run.go:269 +0x10ac fp=0x4004a87f10 sp=0x4004a87df0 pc=0x6d3c4c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0x40035b8008, 0x2f5a)
	pkg/sentry/kernel/task_run.go:97 +0x250 fp=0x4004a87fb0 sp=0x4004a87f10 pc=0x6d24f0
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:400 +0x2c fp=0x4004a87fd0 sp=0x4004a87fb0 pc=0x6dd3fc
runtime.goexit({})
	src/runtime/asm_arm64.s:1223 +0x4 fp=0x4004a87fd0 sp=0x4004a87fd0 pc=0x8d484
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 55042
	pkg/sentry/kernel/task_start.go:400 +0xd8