panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x8d32f9]

goroutine 321 [running]:
panic({0x1040680, 0x1e6e7a0})
	GOROOT/src/runtime/panic.go:941 +0x397 fp=0xc000a0f688 sp=0xc000a0f5c8 pc=0x435837
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:220
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:818 +0x336 fp=0xc000a0f6d8 sp=0xc000a0f688 pc=0x44c236
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).IncUsers(0xc080c00000?)
	pkg/sentry/mm/lifecycle.go:246 +0x19 fp=0xc000a0f6e0 sp=0xc000a0f6d8 pc=0x8d32f9
gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).getMemoryManager(0xc000636000)
	pkg/sentry/kernel/task_usermem.go:353 +0x8f fp=0xc000a0f700 sp=0xc000a0f6e0 pc=0xa2f84f
gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).CopyInBytes(0xc000636000, 0xc00040c818?, {0xc000c00000, 0x7ffff000, 0x7ffff000})
	pkg/sentry/kernel/task_usermem.go:361 +0x7d fp=0xc000a0f7a0 sp=0xc000a0f700 pc=0xa2f93d
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.doProcessVMReadWrite(0xc0008ca000, 0xc0008ca000, 0x4402d1?, 0x0?, 0xc000a0f8f4?, 0xc000a0f8f8?)
	pkg/sentry/syscalls/linux/vfs2/mmap.go:186 +0x449 fp=0xc000a0f898 sp=0xc000a0f7a0 pc=0xcf2869
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.processVMRW(0x0?, {{0x12}, {0x200000c0}, {0x1}, {0x20000ac0}, {0x1}, {0x0}}, 0x1)
	pkg/sentry/syscalls/linux/vfs2/mmap.go:152 +0x1cf fp=0xc000a0f908 sp=0xc000a0f898 pc=0xcf22ef
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.ProcessVMWritev(0x0?, {{0x12}, {0x200000c0}, {0x1}, {0x20000ac0}, {0x1}, {0x0}})
	pkg/sentry/syscalls/linux/vfs2/mmap.go:114 +0x45 fp=0xc000a0f958 sp=0xc000a0f908 pc=0xcf20e5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0007e1500, 0x137, {{0x12}, {0x200000c0}, {0x1}, {0x20000ac0}, {0x1}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc000a0fc98 sp=0xc000a0f958 pc=0xa2b14b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0007e1500, 0x85?, {{0x12}, {0x200000c0}, {0x1}, {0x20000ac0}, {0x1}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc000a0fcf8 sp=0xc000a0fc98 pc=0xa2c734
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x8bfd4f?, 0x0?, {{0x12}, {0x200000c0}, {0x1}, {0x20000ac0}, {0x1}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc000a0fd58 sp=0xc000a0fcf8 pc=0xa2c325
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000a8ed00?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc000a0fe50 sp=0xc000a0fd58 pc=0xa2bfec
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000170600?, 0xc0007e1500)
	pkg/sentry/kernel/task_run.go:253 +0x1125 fp=0xc000a0ff60 sp=0xc000a0fe50 pc=0xa1dda5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0007e1500, 0x13)
	pkg/sentry/kernel/task_run.go:94 +0x1ec fp=0xc000a0ffc0 sp=0xc000a0ff60 pc=0xa1c5ec
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:370 +0x2a fp=0xc000a0ffe0 sp=0xc000a0ffc0 pc=0xa295ea
runtime.goexit()
	src/runtime/asm_amd64.s:1571 +0x1 fp=0xc000a0ffe8 sp=0xc000a0ffe0 pc=0x469321
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:370 +0x105