panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x7878ea]

goroutine 3012928 [running]:
panic({0x1115fa0?, 0x2a4c590?})
	GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc001cad010 sp=0xc001cacf60 pc=0x43a72c
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:261
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:861 +0x378 fp=0xc001cad070 sp=0xc001cad010 pc=0x451f38
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).IncRef(0x1108f40?)
	pkg/sentry/vfs/mount.go:693 +0xa fp=0xc001cad078 sp=0xc001cad070 pc=0x7878ea
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc000399a40, 0x0)
	pkg/sentry/vfs/namespace.go:143 +0x1be fp=0xc001cad148 sp=0xc001cad078 pc=0x78cffe
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc0003997c0, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cad218 sp=0xc001cad148 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc0005312c0, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cad2e8 sp=0xc001cad218 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc0005bc8c0, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cad3b8 sp=0xc001cad2e8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc0000defa0, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cad488 sp=0xc001cad3b8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc0000df040, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cad558 sp=0xc001cad488 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc000a9a140, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cad628 sp=0xc001cad558 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc000a9a1e0, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cad6f8 sp=0xc001cad628 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc0007145a0, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cad7c8 sp=0xc001cad6f8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc0092b7e00, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cad898 sp=0xc001cad7c8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00af62f00, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cad968 sp=0xc001cad898 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc000531a40, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cada38 sp=0xc001cad968 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00245e8c0, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cadb08 sp=0xc001cada38 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc0013a3040, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cadbd8 sp=0xc001cadb08 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00d2b7040, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cadca8 sp=0xc001cadbd8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc007cdd2c0, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cadd78 sp=0xc001cadca8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00b5ac820, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cade48 sp=0xc001cadd78 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc007cdd400, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cadf18 sp=0xc001cade48 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00bc565a0, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cadfe8 sp=0xc001cadf18 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00a78de00, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cae0b8 sp=0xc001cadfe8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00bead540, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cae188 sp=0xc001cae0b8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00245fe00, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cae258 sp=0xc001cae188 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00cac5d60, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cae328 sp=0xc001cae258 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00a79b2c0, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cae3f8 sp=0xc001cae328 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00c3335e0, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cae4c8 sp=0xc001cae3f8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc0005bdd60, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cae598 sp=0xc001cae4c8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00b5ad7c0, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cae668 sp=0xc001cae598 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc0005bdea0, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cae738 sp=0xc001cae668 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00a79a780, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cae808 sp=0xc001cae738 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00c3328c0, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cae8d8 sp=0xc001cae808 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00c332aa0, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001cae9a8 sp=0xc001cae8d8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc0013a28c0, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001caea78 sp=0xc001cae9a8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00c333b80, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001caeb48 sp=0xc001caea78 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00a78d0e0, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001caec18 sp=0xc001caeb48 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00da42140, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001caece8 sp=0xc001caec18 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc0005314a0, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001caedb8 sp=0xc001caece8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00c332500, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001caee88 sp=0xc001caedb8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc0007155e0, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001caef58 sp=0xc001caee88 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00a79b4a0, 0xc00ba24dc0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001caf028 sp=0xc001caef58 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00cec40a0, 0xc00ba24e60)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001caf0f8 sp=0xc001caf028 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc00cec41e0, 0xc00ba24d20)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001caf1c8 sp=0xc001caf0f8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc0092b6140, 0xc00ba24c80)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001caf298 sp=0xc001caf1c8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc00adf7d90, 0xc00adf7da0, 0xc000399680, 0xc00ba24be0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc001caf368 sp=0xc001caf298 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).CloneMountNamespace(0xc0005be1e0, {0x15144d8, 0xc00d25b500}, 0xc000c0e060, 0xc0006f4540, 0xc00d408600?, 0xae00000?, {0x14f7f60, 0xc0005be000})
	pkg/sentry/vfs/namespace.go:186 +0x270 fp=0xc001caf430 sp=0xc001caf368 pc=0x78d3b0
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc00d25b500, 0xc001caf810)
	pkg/sentry/kernel/task_clone.go:205 +0xf29 fp=0xc001caf800 sp=0xc001caf430 pc=0x99c089
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x0?, 0xc00cd9d918?, 0x418f8b?, 0x2aa4a48?, 0x424b65?, 0x7f194d400000?)
	pkg/sentry/syscalls/linux/sys_thread.go:215 +0xbd fp=0xc001caf8d0 sp=0xc001caf800 pc=0xb5585d
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0x2?, 0xc00cd9d960?, {{0x20000}, {0x20007240}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x68 fp=0xc001caf910 sp=0xc001caf8d0 pc=0xb16948
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00d25b500, 0x38, {{0x20000}, {0x20007240}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc001cafc50 sp=0xc001caf910 pc=0x9bfc4b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00d25b500, 0x1?, {{0x20000}, {0x20007240}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x4e fp=0xc001cafcb0 sp=0xc001cafc50 pc=0x9c124e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0000d2238?, 0xc00cd9ddf8?, {{0x20000}, {0x20007240}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x74 fp=0xc001cafd10 sp=0xc001cafcb0 pc=0x9c0e14
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00bc07810?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3a8 fp=0xc001cafe08 sp=0xc001cafd10 pc=0x9c0b08
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc004a1ac00?, 0xc00d25b500)
	pkg/sentry/kernel/task_run.go:269 +0x1405 fp=0xc001caff48 sp=0xc001cafe08 pc=0x9b2bc5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00d25b500, 0x1d28)
	pkg/sentry/kernel/task_run.go:98 +0x262 fp=0xc001caffc0 sp=0xc001caff48 pc=0x9b10e2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:395 +0x25 fp=0xc001caffe0 sp=0xc001caffc0 pc=0x9be145
runtime.goexit()
	src/runtime/asm_amd64.s:1650 +0x1 fp=0xc001caffe8 sp=0xc001caffe0 pc=0x471241
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 3012950
	pkg/sentry/kernel/task_start.go:395 +0xf8