panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xffb2da]

goroutine 501 gp=0xc00097e700 m=12 mp=0xc000034008 [running]:
panic({0x1d78440?, 0x2f022b0?})
	GOROOT/src/runtime/panic.go:802 +0x168 fp=0xc00091dc80 sp=0xc00091dbd0 pc=0x4852a8
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:262
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:925 +0x359 fp=0xc00091dce0 sp=0xc00091dc80 pc=0x488239
gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).DecRef(...)
	pkg/sentry/kernel/fs_context.go:88
gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute(0xc000dd4c88?, 0xc000dd4c88)
	pkg/sentry/kernel/task_exit.go:300 +0x81a fp=0xc00091de70 sp=0xc00091dce0 pc=0xffb2da
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000dd4c88, 0x45)
	pkg/sentry/kernel/task_run.go:89 +0x4aa fp=0xc00091dfb0 sp=0xc00091de70 pc=0x100e28a
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:416 +0x45 fp=0xc00091dfe0 sp=0xc00091dfb0 pc=0x1021025
runtime.goexit({})
	src/runtime/asm_amd64.s:1693 +0x1 fp=0xc00091dfe8 sp=0xc00091dfe0 pc=0x48eb01
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 499
	pkg/sentry/kernel/task_start.go:416 +0x15a