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

goroutine 1245038 [running]:
panic({0x16ee920, 0x2544c50})
	GOROOT/src/runtime/panic.go:941 +0x397 fp=0xc005df2f18 sp=0xc005df2e58 pc=0x438317
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:220
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:818 +0x336 fp=0xc005df2f68 sp=0xc005df2f18 pc=0x450556
gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).IncUsers(0x0)
	pkg/sentry/mm/lifecycle.go:246 +0x2a fp=0xc005df2f90 sp=0xc005df2f68 pc=0xb7576a
gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).getMemoryManager(0xc002995b20)
	pkg/sentry/kernel/task_usermem.go:353 +0xb5 fp=0xc005df2fc8 sp=0xc005df2f90 pc=0xd60475
gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).CopyInBytes(0xc002995b20, 0x0?, {0xc005ecbe44, 0x10, 0x90})
	pkg/sentry/kernel/task_usermem.go:361 +0x77 fp=0xc005df30c0 sp=0xc005df2fc8 pc=0xd60557
gvisor.dev/gvisor/pkg/sentry/kernel.makeIovec({0x1bc8058, 0xc002995b20}, 0xc005ecb500, 0xc005df3220?, {0xc005ecbe44, 0x10, 0x90})
	pkg/sentry/kernel/task_usermem.go:261 +0xa4 fp=0xc005df3178 sp=0xc005df30c0 pc=0xd5f684
gvisor.dev/gvisor/pkg/sentry/kernel.copyInIovecs({0x1bc8058, 0xc002995b20}, 0xc005ecb500, 0x20001a80, 0x6)
	pkg/sentry/kernel/task_usermem.go:231 +0x27f fp=0xc005df3258 sp=0xc005df3178 pc=0xd5f37f
gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).CopyInIovecs(...)
	pkg/sentry/kernel/task_usermem.go:387
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.doProcessVMReadWrite(0xc0068c2a80, 0xc005ecb500, 0x0?, 0x0?, 0xb?, 0x1?)
	pkg/sentry/syscalls/linux/vfs2/mmap.go:166 +0x325 fp=0xc005df33f8 sp=0xc005df3258 pc=0x1169985
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.processVMRW(0xc008042000, {{0x354f}, {0x20001680}, {0x3}, {0x20001a80}, {0x6}, {0x0}}, 0x1)
	pkg/sentry/syscalls/linux/vfs2/mmap.go:152 +0x1c5 fp=0xc005df3490 sp=0xc005df33f8 pc=0x1169445
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.ProcessVMWritev(0xc008042000?, {{0x354f}, {0x20001680}, {0x3}, {0x20001a80}, {0x6}, {0x0}})
	pkg/sentry/syscalls/linux/vfs2/mmap.go:114 +0x59 fp=0xc005df3508 sp=0xc005df3490 pc=0x1169219
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc008042000, 0x137, {{0x354f}, {0x20001680}, {0x3}, {0x20001a80}, {0x6}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x9b8 fp=0xc005df3a18 sp=0xc005df3508 pc=0xd5a1f8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc008042000, 0x0?, {{0x354f}, {0x20001680}, {0x3}, {0x20001a80}, {0x6}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x7d fp=0xc005df3ab0 sp=0xc005df3a18 pc=0xd5bf5d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc007b2eb60?, 0xc005bd74a0?, {{0x354f}, {0x20001680}, {0x3}, {0x20001a80}, {0x6}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x8f fp=0xc005df3b28 sp=0xc005df3ab0 pc=0xd5b94f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc008042000)
	pkg/sentry/kernel/task_syscall.go:257 +0x496 fp=0xc005df3c50 sp=0xc005df3b28 pc=0xd5b4f6
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc008042000?, 0xc008042000)
	pkg/sentry/kernel/task_run.go:253 +0x18f9 fp=0xc005df3ec0 sp=0xc005df3c50 pc=0xd46819
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc008042000, 0xe144)
	pkg/sentry/kernel/task_run.go:94 +0x354 fp=0xc005df3fb0 sp=0xc005df3ec0 pc=0xd445b4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:370 +0x48 fp=0xc005df3fe0 sp=0xc005df3fb0 pc=0xd57de8
runtime.goexit()
	src/runtime/asm_amd64.s:1571 +0x1 fp=0xc005df3fe8 sp=0xc005df3fe0 pc=0x46df01
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:370 +0x1a8