syzbot

panic: nested locking: tmpfs.filesystemRWMutex:
	goroutine 28 [running]:
	gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*filesystemRWMutex).RLock(0xc000b17da8)
		bazel-out/k8-fastbuild/bin/pkg/sentry/fsimpl/tmpfs/filesystem_mutex.go:59 +0x4d
	gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*filesystem).OpenAt(0xc000b17d40, {0x2064700, 0xc000acb208}, 0xc000de2008, {0x8002, 0x0, 0x0})
		pkg/sentry/fsimpl/tmpfs/filesystem.go:348 +0xea
	gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).OpenAt(0xc0001fd1e0, {0x2064700, 0xc000acb208}, 0xc000dd3ec0, 0xc000893568, 0xc00089349c)
		pkg/sentry/vfs/vfs.go:475 +0x686
	gvisor.dev/gvisor/pkg/sentry/syscalls/linux.openat(0xc000acb208, 0xffffff9c, 0x20000280, 0x2, 0x0)
		pkg/sentry/syscalls/linux/sys_file.go:112 +0x41d
	gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Openat(0xc000acb208, 0x484ca9?, {{0xffffffffffffff9c}, {0x20000280}, {0x2}, {0x0}, {0x0}, {0x7ea57ae55be0}})
		pkg/sentry/syscalls/linux/sys_file.go:91 +0xc6
	gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000acb208, 0x101, {{0xffffffffffffff9c}, {0x20000280}, {0x2}, {0x0}, {0x0}, {0x7ea57ae55be0}})
		pkg/sentry/kernel/task_syscall.go:143 +0xb9f
	gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000acb208, 0x101, {{0xffffffffffffff9c}, {0x20000280}, {0x2}, {0x0}, {0x0}, {0x7ea57ae55be0}})
		pkg/sentry/kernel/task_syscall.go:323 +0x85
	gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000acb208, 0x101, {{0xffffffffffffff9c}, {0x20000280}, {0x2}, {0x0}, {0x0}, {0x7ea57ae55be0}})
		pkg/sentry/kernel/task_syscall.go:283 +0xc7
	gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000acb208)
		pkg/sentry/kernel/task_syscall.go:258 +0x54a
	gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000acb208?, 0xc000acb208)
		pkg/sentry/kernel/task_run.go:269 +0x2295
	gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000acb208, 0x8)
		pkg/sentry/kernel/task_run.go:97 +0x41b
	created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 25
		pkg/sentry/kernel/task_start.go:400 +0x185