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

goroutine 451 [running]:
panic({0x1040680, 0x1e6e7a0})
	GOROOT/src/runtime/panic.go:941 +0x397 fp=0xc000547688 sp=0xc0005475c8 pc=0x435837
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:220
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:818 +0x336 fp=0xc0005476d8 sp=0xc000547688 pc=0x44c236
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).IncUsers(0xc080b86000?)
	pkg/sentry/mm/lifecycle.go:246 +0x19 fp=0xc0005476e0 sp=0xc0005476d8 pc=0x8d32f9
gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).getMemoryManager(0xc0001e22e0)
	pkg/sentry/kernel/task_usermem.go:353 +0x8f fp=0xc000547700 sp=0xc0005476e0 pc=0xa2f84f
gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).CopyInBytes(0xc0001e22e0, 0xc000547818?, {0xc000b86000, 0x7ffff000, 0x7ffff000})
	pkg/sentry/kernel/task_usermem.go:361 +0x7d fp=0xc0005477a0 sp=0xc000547700 pc=0xa2f93d
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.doProcessVMReadWrite(0xc000a5d500, 0xc000a5d500, 0x4402d1?, 0x0?, 0xc0005478f4?, 0xc0005478f8?)
	pkg/sentry/syscalls/linux/vfs2/mmap.go:186 +0x449 fp=0xc000547898 sp=0xc0005477a0 pc=0xcf2869
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.processVMRW(0x0?, {{0x15}, {0x200000c0}, {0x1}, {0x20000ac0}, {0x1}, {0x0}}, 0x1)
	pkg/sentry/syscalls/linux/vfs2/mmap.go:152 +0x1cf fp=0xc000547908 sp=0xc000547898 pc=0xcf22ef
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.ProcessVMWritev(0x0?, {{0x15}, {0x200000c0}, {0x1}, {0x20000ac0}, {0x1}, {0x0}})
	pkg/sentry/syscalls/linux/vfs2/mmap.go:114 +0x45 fp=0xc000547958 sp=0xc000547908 pc=0xcf20e5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000837500, 0x137, {{0x15}, {0x200000c0}, {0x1}, {0x20000ac0}, {0x1}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc000547c98 sp=0xc000547958 pc=0xa2b14b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000837500, 0x85?, {{0x15}, {0x200000c0}, {0x1}, {0x20000ac0}, {0x1}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc000547cf8 sp=0xc000547c98 pc=0xa2c734
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x8bfd4f?, 0x0?, {{0x15}, {0x200000c0}, {0x1}, {0x20000ac0}, {0x1}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc000547d58 sp=0xc000547cf8 pc=0xa2c325
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00050fad0?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc000547e50 sp=0xc000547d58 pc=0xa2bfec
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000b40180?, 0xc000837500)
	pkg/sentry/kernel/task_run.go:253 +0x1125 fp=0xc000547f60 sp=0xc000547e50 pc=0xa1dda5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000837500, 0x16)
	pkg/sentry/kernel/task_run.go:94 +0x1ec fp=0xc000547fc0 sp=0xc000547f60 pc=0xa1c5ec
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:370 +0x2a fp=0xc000547fe0 sp=0xc000547fc0 pc=0xa295ea
runtime.goexit()
	src/runtime/asm_amd64.s:1571 +0x1 fp=0xc000547fe8 sp=0xc000547fe0 pc=0x469321
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:370 +0x105