panic: kernfs.Dentry.DecRef() called without holding a reference goroutine 308 [running]: panic({0xf82ce0, 0x1368f68}) GOROOT/src/runtime/panic.go:941 +0x397 fp=0xc00091d350 sp=0xc00091d290 pc=0x4358b7 gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Dentry).DecRef(0xc00091d3a0?, {0x13831b0?, 0xc0005a7500?}) pkg/sentry/fsimpl/kernfs/kernfs.go:290 +0xed fp=0xc00091d378 sp=0xc00091d350 pc=0x7dc18d gvisor.dev/gvisor/pkg/sentry/vfs.(*Dentry).DecRef(...) pkg/sentry/vfs/dentry.go:155 gvisor.dev/gvisor/pkg/sentry/vfs.VirtualDentry.DecRef({0xc0002a4200?, 0xc000888240?}, {0x13831b0, 0xc0005a7500}) pkg/sentry/vfs/vfs.go:926 +0x59 fp=0xc00091d3a8 sp=0xc00091d378 pc=0x768699 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).BindAt.func2() pkg/sentry/vfs/mount.go:575 +0x32 fp=0xc00091d3d8 sp=0xc00091d3a8 pc=0x757692 runtime.deferreturn() GOROOT/src/runtime/panic.go:436 +0x33 fp=0xc00091d418 sp=0xc00091d3d8 pc=0x4349d3 gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).BindAt(0xc0003fc4d0, {0x13831b0?, 0xc0005a7500}, 0xc0008881b0?, 0xc000756e00?, 0x7?) pkg/sentry/vfs/mount.go:604 +0x565 fp=0xc00091d668 sp=0xc00091d418 pc=0x7571c5 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Mount(0xc0005a7500, {{0x20000240}, {0x20000280}, {0x0}, {0x2001411}, {0x0}, {0x7fbf52dd2e78}}) pkg/sentry/syscalls/linux/sys_mount.go:84 +0xa6c fp=0xc00091d958 sp=0xc00091d668 pc=0xac6b4c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0005a7500, 0xa5, {{0x20000240}, {0x20000280}, {0x0}, {0x2001411}, {0x0}, {0x7fbf52dd2e78}}) pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc00091dc98 sp=0xc00091d958 pc=0x9766ab gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0005a7500, 0x85?, {{0x20000240}, {0x20000280}, {0x0}, {0x2001411}, {0x0}, {0x7fbf52dd2e78}}) pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc00091dcf8 sp=0xc00091dc98 pc=0x977c94 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x81018f?, 0x0?, {{0x20000240}, {0x20000280}, {0x0}, {0x2001411}, {0x0}, {0x7fbf52dd2e78}}) pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc00091dd58 sp=0xc00091dcf8 pc=0x977885 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00074c4e0?) pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc00091de50 sp=0xc00091dd58 pc=0x97754c gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0008c0280?, 0xc0005a7500) pkg/sentry/kernel/task_run.go:253 +0x1125 fp=0xc00091df60 sp=0xc00091de50 pc=0x969465 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0005a7500, 0xd) pkg/sentry/kernel/task_run.go:94 +0x1ec fp=0xc00091dfc0 sp=0xc00091df60 pc=0x967cac gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1() pkg/sentry/kernel/task_start.go:378 +0x2a fp=0xc00091dfe0 sp=0xc00091dfc0 pc=0x974b4a runtime.goexit() src/runtime/asm_amd64.s:1571 +0x1 fp=0xc00091dfe8 sp=0xc00091dfe0 pc=0x4695c1 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:378 +0x105