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

goroutine 4715 [running]:
panic({0x1040680, 0x1e6e7a0})
	GOROOT/src/runtime/panic.go:941 +0x397 fp=0xc000b5d688 sp=0xc000b5d5c8 pc=0x435837
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:220
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:818 +0x336 fp=0xc000b5d6d8 sp=0xc000b5d688 pc=0x44c236
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).IncUsers(0x419f60?)
	pkg/sentry/mm/lifecycle.go:246 +0x19 fp=0xc000b5d6e0 sp=0xc000b5d6d8 pc=0x8d32f9
gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).getMemoryManager(0xc00073c000)
	pkg/sentry/kernel/task_usermem.go:353 +0x8f fp=0xc000b5d700 sp=0xc000b5d6e0 pc=0xa2f84f
gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).CopyInBytes(0xc00073c000, 0x0?, {0xc081680000, 0x7ffff000, 0x7ffff000})
	pkg/sentry/kernel/task_usermem.go:361 +0x7d fp=0xc000b5d7a0 sp=0xc000b5d700 pc=0xa2f93d
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.doProcessVMReadWrite(0xc001560000, 0xc001560000, 0xc000982d20?, 0x0?, 0xc000b5d948?, 0xaab8c5?)
	pkg/sentry/syscalls/linux/vfs2/mmap.go:186 +0x449 fp=0xc000b5d898 sp=0xc000b5d7a0 pc=0xcf2869
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.processVMRW(0x55a10a392f88?, {{0xb4}, {0x20008400}, {0x2}, {0x20008640}, {0x286}, {0x0}}, 0x0)
	pkg/sentry/syscalls/linux/vfs2/mmap.go:155 +0x205 fp=0xc000b5d908 sp=0xc000b5d898 pc=0xcf2325
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.ProcessVMReadv(0xc000639500?, {{0xb4}, {0x20008400}, {0x2}, {0x20008640}, {0x286}, {0x0}})
	pkg/sentry/syscalls/linux/vfs2/mmap.go:109 +0x45 fp=0xc000b5d958 sp=0xc000b5d908 pc=0xcf2065
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000639500, 0x136, {{0xb4}, {0x20008400}, {0x2}, {0x20008640}, {0x286}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc000b5dc98 sp=0xc000b5d958 pc=0xa2b14b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000639500, 0x85?, {{0xb4}, {0x20008400}, {0x2}, {0x20008640}, {0x286}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc000b5dcf8 sp=0xc000b5dc98 pc=0xa2c734
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x8bfd4f?, 0x1?, {{0xb4}, {0x20008400}, {0x2}, {0x20008640}, {0x286}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc000b5dd58 sp=0xc000b5dcf8 pc=0xa2c325
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000836ea0?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc000b5de50 sp=0xc000b5dd58 pc=0xa2bfec
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc001562b00?, 0xc000639500)
	pkg/sentry/kernel/task_run.go:253 +0x1125 fp=0xc000b5df60 sp=0xc000b5de50 pc=0xa1dda5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000639500, 0xdc)
	pkg/sentry/kernel/task_run.go:94 +0x1ec fp=0xc000b5dfc0 sp=0xc000b5df60 pc=0xa1c5ec
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:370 +0x2a fp=0xc000b5dfe0 sp=0xc000b5dfc0 pc=0xa295ea
runtime.goexit()
	src/runtime/asm_amd64.s:1571 +0x1 fp=0xc000b5dfe8 sp=0xc000b5dfe0 pc=0x469321
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:370 +0x105