panic: nested locking: kernfs.filesystemRWMutex:
goroutine 1790320 [running]:
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*filesystemRWMutex).Lock(0xc00036f590)
	bazel-out/k8-fastbuild-ST-3dcbe13c9b87/bin/pkg/sentry/fsimpl/kernfs/filesystem_mutex.go:31 +0x45
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Dentry).DecRef(0xc001045c20, {0x841500, 0xc05f505500})
	pkg/sentry/fsimpl/kernfs/kernfs.go:286 +0x7e
gvisor.dev/gvisor/pkg/sentry/vfs.(*Dentry).DecRef(...)
	pkg/sentry/vfs/dentry.go:155
gvisor.dev/gvisor/pkg/sentry/vfs.VirtualDentry.DecRef({0xc0001b9680?, 0xc001045c20?}, {0x841500, 0xc05f505500})
	pkg/sentry/vfs/vfs.go:1019 +0x78
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).forgetDeadMountpoint(0xc0001e61e0, {0x841500, 0xc05f505500}, 0xc001045c20)
	pkg/sentry/vfs/dentry.go:344 +0x293
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).InvalidateDentry(0xc00452bfc8?, {0x841500, 0xc05f505500}, 0xc001045c20)
	pkg/sentry/vfs/dentry.go:249 +0x94
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).revalidateChildLocked(0x311620?, {0x841500, 0xc05f505500}, 0x4?, 0xc00026cf30, {0xc0097eebdc, 0x4}, 0xc001045c20)
	pkg/sentry/fsimpl/kernfs/filesystem.go:121 +0x15f
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).stepExistingLocked(0x12f43f9?, {0x841500, 0xc05f505500}, 0xc00255a900, 0xc00026cf30)
	pkg/sentry/fsimpl/kernfs/filesystem.go:75 +0x3ea
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).walkExistingLocked(0xc00036f590?, {0x841500, 0xc05f505500}, 0xc00255a900)
	pkg/sentry/fsimpl/kernfs/filesystem.go:160 +0xdf
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).OpenAt(0xc00036f540, {0x841500, 0xc05f505500}, 0xc00255a900, {0x8001, 0x0, 0x0})
	pkg/sentry/fsimpl/kernfs/filesystem.go:483 +0x1c5
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).OpenAt(0xc04952ac40?, {0x841500, 0xc05f505500}, 0xc000170900?, 0xc000e81370, 0xc000e81268)
	pkg/sentry/vfs/vfs.go:460 +0x517
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.openat(0xc05f505500, 0x1?, 0x131eae5?, 0x80001, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:112 +0x2b2
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Openat(0xc000e814c0?, 0x131cef9?, {{0xffffff9c}, {0x55e4b7e2ed29}, {0x80001}, {0x0}, {0x0}, {0x7f2e8c709030}})
	pkg/sentry/syscalls/linux/sys_file.go:91 +0x45
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc05f505500, 0x101, {{0xffffff9c}, {0x55e4b7e2ed29}, {0x80001}, {0x0}, {0x0}, {0x7f2e8c709030}})
	pkg/sentry/kernel/task_syscall.go:142 +0x9c2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc05f505500, 0x0?, {{0xffffff9c}, {0x55e4b7e2ed29}, {0x80001}, {0x0}, {0x0}, {0x7f2e8c709030}})
	pkg/sentry/kernel/task_syscall.go:322 +0x7d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc007f50000?, 0xc00717c780?, {{0xffffff9c}, {0x55e4b7e2ed29}, {0x80001}, {0x0}, {0x0}, {0x7f2e8c709030}})
	pkg/sentry/kernel/task_syscall.go:282 +0x8f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc05f505500)
	pkg/sentry/kernel/task_syscall.go:257 +0x4c5
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc05f505500?, 0xc05f505500)
	pkg/sentry/kernel/task_run.go:269 +0x1d4b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc05f505500, 0x1e67)
	pkg/sentry/kernel/task_run.go:98 +0x41b
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x1ad