panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x60 pc=0x999919]

goroutine 318 [running]:
panic({0xf39680, 0x1ba4260})
	GOROOT/src/runtime/panic.go:941 +0x397 fp=0xc0003335c0 sp=0xc000333500 pc=0x4359f7
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:220
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:818 +0x336 fp=0xc000333610 sp=0xc0003335c0 pc=0x44c3f6
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).IncUsers(...)
	pkg/sentry/mm/lifecycle.go:246
gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).getMemoryManager(0xc0004a4000)
	pkg/sentry/kernel/task_usermem.go:353 +0x59 fp=0xc000333630 sp=0xc000333610 pc=0x999919
gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).CopyInBytes(0xc0004a4000, 0xc0004a4020?, {0xc000880000, 0x7ffff000, 0x7ffff000})
	pkg/sentry/kernel/task_usermem.go:361 +0x73 fp=0xc0003336d0 sp=0xc000333630 pc=0x9999f3
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.doProcessVMReadWrite(0xc0006c8a80, 0xc0006c8a80, 0x300000002?, 0xc0006ce340?, 0xc000333830?, 0x463d5b?)
	pkg/sentry/syscalls/linux/vfs2/mmap.go:186 +0x3a9 fp=0xc0003337e0 sp=0xc0003336d0 pc=0xc10529
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.processVMRW(0x7fa1a?, {{0x15}, {0x200000c0}, {0x1}, {0x20000ac0}, {0x1}, {0x0}}, 0x1)
	pkg/sentry/syscalls/linux/vfs2/mmap.go:152 +0x13c fp=0xc000333850 sp=0xc0003337e0 pc=0xc1009c
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.ProcessVMWritev(0xc0006ce340?, {{0x15}, {0x200000c0}, {0x1}, {0x20000ac0}, {0x1}, {0x0}})
	pkg/sentry/syscalls/linux/vfs2/mmap.go:114 +0x3b fp=0xc0003338a0 sp=0xc000333850 pc=0xc0ff3b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00044f500, 0x137, {{0x15}, {0x200000c0}, {0x1}, {0x20000ac0}, {0x1}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x755 fp=0xc000333c90 sp=0xc0003338a0 pc=0x995fd5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00044f500, 0xc00066c498?, {{0x15}, {0x200000c0}, {0x1}, {0x20000ac0}, {0x1}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x4a fp=0xc000333cf0 sp=0xc000333c90 pc=0x99720a
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x0?, 0xc00037a000?, {{0x15}, {0x200000c0}, {0x1}, {0x20000ac0}, {0x1}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x65 fp=0xc000333d50 sp=0xc000333cf0 pc=0x996ee5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000280750?)
	pkg/sentry/kernel/task_syscall.go:257 +0x2f0 fp=0xc000333e48 sp=0xc000333d50 pc=0x996c50
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000028180?, 0xc00044f500)
	pkg/sentry/kernel/task_run.go:253 +0xdea fp=0xc000333f60 sp=0xc000333e48 pc=0x98b02a
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00044f500, 0x16)
	pkg/sentry/kernel/task_run.go:94 +0x1ac fp=0xc000333fc0 sp=0xc000333f60 pc=0x989c2c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:370 +0x2a fp=0xc000333fe0 sp=0xc000333fc0 pc=0x99482a
runtime.goexit()
	src/runtime/asm_amd64.s:1571 +0x1 fp=0xc000333fe8 sp=0xc000333fe0 pc=0x4694e1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:370 +0xf9