panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xb7576a]

goroutine 50592 [running]:
panic({0x16ee920, 0x2544c50})
	GOROOT/src/runtime/panic.go:941 +0x397 fp=0xc0029a70b0 sp=0xc0029a6ff0 pc=0x438317
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:220
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:818 +0x336 fp=0xc0029a7100 sp=0xc0029a70b0 pc=0x450556
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).IncUsers(0x0)
	pkg/sentry/mm/lifecycle.go:246 +0x2a fp=0xc0029a7128 sp=0xc0029a7100 pc=0xb7576a
gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).getMemoryManager(0xc0058403a0)
	pkg/sentry/kernel/task_usermem.go:353 +0xb5 fp=0xc0029a7160 sp=0xc0029a7128 pc=0xd60475
gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).CopyOutBytes(0xc0058403a0, 0xc0058403a0?, {0xc0016a6410, 0x0, 0xcd})
	pkg/sentry/kernel/task_usermem.go:371 +0x77 fp=0xc0029a7258 sp=0xc0029a7160 pc=0xd608b7
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.doProcessVMReadWrite(0xc0060af500, 0xc0083a2a80, 0x0?, 0x0?, 0x0?, 0x1?)
	pkg/sentry/syscalls/linux/vfs2/mmap.go:202 +0x911 fp=0xc0029a73f8 sp=0xc0029a7258 pc=0x1169f71
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.processVMRW(0xc006f2ca80, {{0x223}, {0x20000340}, {0x1}, {0x20000540}, {0x2d7}, {0x0}}, 0x1)
	pkg/sentry/syscalls/linux/vfs2/mmap.go:152 +0x1c5 fp=0xc0029a7490 sp=0xc0029a73f8 pc=0x1169445
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.ProcessVMWritev(0xc006f2ca80?, {{0x223}, {0x20000340}, {0x1}, {0x20000540}, {0x2d7}, {0x0}})
	pkg/sentry/syscalls/linux/vfs2/mmap.go:114 +0x59 fp=0xc0029a7508 sp=0xc0029a7490 pc=0x1169219
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc006f2ca80, 0x137, {{0x223}, {0x20000340}, {0x1}, {0x20000540}, {0x2d7}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x9b8 fp=0xc0029a7a18 sp=0xc0029a7508 pc=0xd5a1f8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc006f2ca80, 0x0?, {{0x223}, {0x20000340}, {0x1}, {0x20000540}, {0x2d7}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x7d fp=0xc0029a7ab0 sp=0xc0029a7a18 pc=0xd5bf5d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc006fd5790?, 0xc0060fb4a0?, {{0x223}, {0x20000340}, {0x1}, {0x20000540}, {0x2d7}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x8f fp=0xc0029a7b28 sp=0xc0029a7ab0 pc=0xd5b94f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc006f2ca80)
	pkg/sentry/kernel/task_syscall.go:257 +0x496 fp=0xc0029a7c50 sp=0xc0029a7b28 pc=0xd5b4f6
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc006f2ca80?, 0xc006f2ca80)
	pkg/sentry/kernel/task_run.go:253 +0x18f9 fp=0xc0029a7ec0 sp=0xc0029a7c50 pc=0xd46819
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc006f2ca80, 0x8ae)
	pkg/sentry/kernel/task_run.go:94 +0x354 fp=0xc0029a7fb0 sp=0xc0029a7ec0 pc=0xd445b4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:370 +0x48 fp=0xc0029a7fe0 sp=0xc0029a7fb0 pc=0xd57de8
runtime.goexit()
	src/runtime/asm_amd64.s:1571 +0x1 fp=0xc0029a7fe8 sp=0xc0029a7fe0 pc=0x46df01
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:370 +0x1a8