panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x78870a]
goroutine 1871020 [running]:
panic({0x115d8e0, 0x2a26170})
GOROOT/src/runtime/panic.go:987 +0x3bb fp=0xc002522af0 sp=0xc002522a30 pc=0x436abb
runtime.panicmem(...)
GOROOT/src/runtime/panic.go:260
runtime.sigpanic()
GOROOT/src/runtime/signal_unix.go:837 +0x37d fp=0xc002522b50 sp=0xc002522af0 pc=0x44e0fd
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).IncRef(0x114bde0?)
pkg/sentry/vfs/mount.go:644 +0xa fp=0xc002522b58 sp=0xc002522b50 pc=0x78870a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0001381e0, {0x15350a0, 0xc00fc9ca80}, 0xc00a641510, 0xc00a641520, 0xc000d9a140, 0x0)
pkg/sentry/vfs/namespace.go:138 +0x1b2 fp=0xc002522c28 sp=0xc002522b58 pc=0x78e092
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0001381e0, {0x15350a0, 0xc00fc9ca80}, 0xc00a641510, 0xc00a641520, 0xc00034bf40, 0x0)
pkg/sentry/vfs/namespace.go:142 +0x27a fp=0xc002522cf8 sp=0xc002522c28 pc=0x78e15a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0001381e0, {0x15350a0, 0xc00fc9ca80}, 0xc00a641510, 0xc00a641520, 0xc0089390e0, 0xc0022f8e60)
pkg/sentry/vfs/namespace.go:142 +0x27a fp=0xc002522dc8 sp=0xc002522cf8 pc=0x78e15a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0001381e0, {0x15350a0, 0xc00fc9ca80}, 0xc00a641510, 0xc00a641520, 0xc000137ae0, 0xc0022f8dc0)
pkg/sentry/vfs/namespace.go:142 +0x27a fp=0xc002522e98 sp=0xc002522dc8 pc=0x78e15a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0001381e0, {0x15350a0, 0xc00fc9ca80}, 0xc00a641510, 0xc00a641520, 0xc003229f40, 0xc0022f8d20)
pkg/sentry/vfs/namespace.go:142 +0x27a fp=0xc002522f68 sp=0xc002522e98 pc=0x78e15a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0001381e0, {0x15350a0, 0xc00fc9ca80}, 0xc00a641510, 0xc00a641520, 0xc003229ea0, 0xc0022f8c80)
pkg/sentry/vfs/namespace.go:142 +0x27a fp=0xc002523038 sp=0xc002522f68 pc=0x78e15a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0001381e0, {0x15350a0, 0xc00fc9ca80}, 0xc00a641510, 0xc00a641520, 0xc0049ec8c0, 0xc0022f8be0)
pkg/sentry/vfs/namespace.go:142 +0x27a fp=0xc002523108 sp=0xc002523038 pc=0x78e15a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0001381e0, {0x15350a0, 0xc00fc9ca80}, 0xc00a641510, 0xc00a641520, 0xc0049ec640, 0xc0022f8b40)
pkg/sentry/vfs/namespace.go:142 +0x27a fp=0xc0025231d8 sp=0xc002523108 pc=0x78e15a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0001381e0, {0x15350a0, 0xc00fc9ca80}, 0xc00a641510, 0xc00a641520, 0xc0049ed360, 0xc0022f8aa0)
pkg/sentry/vfs/namespace.go:142 +0x27a fp=0xc0025232a8 sp=0xc0025231d8 pc=0x78e15a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0001381e0, {0x15350a0, 0xc00fc9ca80}, 0xc00a641510, 0xc00a641520, 0xc00034b400, 0xc0022f88c0)
pkg/sentry/vfs/namespace.go:142 +0x27a fp=0xc002523378 sp=0xc0025232a8 pc=0x78e15a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).CloneMountNamespace(0xc0001381e0, {0x15350a0, 0xc00fc9ca80}, 0xc0009323c0, 0xc0006c0f00, 0x0?, 0x0?, {0x1518e20, 0xc000138000})
pkg/sentry/vfs/namespace.go:181 +0x285 fp=0xc002523440 sp=0xc002523378 pc=0x78e465
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc00fc9ca80, 0xc002523818)
pkg/sentry/kernel/task_clone.go:198 +0xf09 fp=0xc002523808 sp=0xc002523440 pc=0x9b3f29
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0xc0000122b8?, 0x421527?, 0x561ddf54df88?, 0x0?, 0x0?, 0x0?)
pkg/sentry/syscalls/linux/sys_thread.go:215 +0xbd fp=0xc0025238d8 sp=0xc002523808 pc=0xb762bd
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0xc00fc9ca80?, 0xc00a96d9b8?, {{0xc896c000}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x6e fp=0xc002523918 sp=0xc0025238d8 pc=0xb3562e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00fc9ca80, 0x38, {{0xc896c000}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc002523c58 sp=0xc002523918 pc=0x9d728b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00fc9ca80, 0x0?, {{0xc896c000}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc002523cb8 sp=0xc002523c58 pc=0x9d8874
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0000d65e0?, 0xc00a96de00?, {{0xc896c000}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc002523d18 sp=0xc002523cb8 pc=0x9d8465
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc006c1bc30?)
pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc002523e10 sp=0xc002523d18 pc=0x9d812c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc00539ee00?, 0xc00fc9ca80)
pkg/sentry/kernel/task_run.go:269 +0x144a fp=0xc002523f48 sp=0xc002523e10 pc=0x9c9bea
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00fc9ca80, 0xe155)
pkg/sentry/kernel/task_run.go:98 +0x25c fp=0xc002523fc0 sp=0xc002523f48 pc=0x9c809c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
pkg/sentry/kernel/task_start.go:390 +0x2a fp=0xc002523fe0 sp=0xc002523fc0 pc=0x9d570a
runtime.goexit()
src/runtime/asm_amd64.s:1598 +0x1 fp=0xc002523fe8 sp=0xc002523fe0 pc=0x46d4c1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
pkg/sentry/kernel/task_start.go:390 +0x105