panic: nested locking: kernfs.filesystemRWMutex:
goroutine 3434761 [running]:
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*filesystemRWMutex).Lock(0xc00040d630)
	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(0xc02743b440, {0x845280, 0xc011a68000})
	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({0xc0001b7d80?, 0xc02743b440?}, {0x845280, 0xc011a68000})
	pkg/sentry/vfs/vfs.go:1015 +0x78
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).forgetDeadMountpoint(0xc0001e61e0, {0x845280, 0xc011a68000}, 0xc02743b440)
	pkg/sentry/vfs/dentry.go:344 +0x293
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).InvalidateDentry(0xc0181b0eb8?, {0x845280, 0xc011a68000}, 0xc02743b440)
	pkg/sentry/vfs/dentry.go:249 +0x94
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).revalidateChildLocked(0x312480?, {0x845280, 0xc011a68000}, 0x4?, 0xc000416630, {0xc000ade44c, 0x4}, 0xc02743b440)
	pkg/sentry/fsimpl/kernfs/filesystem.go:121 +0x15f
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).stepExistingLocked(0x12ff779?, {0x845280, 0xc011a68000}, 0xc003ab8480, 0xc000416630)
	pkg/sentry/fsimpl/kernfs/filesystem.go:75 +0x3ea
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).walkExistingLocked(0xc00040d630?, {0x845280, 0xc011a68000}, 0xc003ab8480)
	pkg/sentry/fsimpl/kernfs/filesystem.go:160 +0xdf
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).OpenAt(0xc00040d5e0, {0x845280, 0xc011a68000}, 0xc003ab8480, {0x8001, 0x0, 0x0})
	pkg/sentry/fsimpl/kernfs/filesystem.go:483 +0x1c5
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).OpenAt(0xc00f848200?, {0x845280, 0xc011a68000}, 0xc00003c900?, 0xc00e499370, 0xc00e499268)
	pkg/sentry/vfs/vfs.go:460 +0x517
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.openat(0xc011a68000, 0x1?, 0x1329e65?, 0x80001, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:112 +0x2b2
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Openat(0xc00e4994c0?, 0x1328279?, {{0xffffff9c}, {0x560b19a09d29}, {0x80001}, {0x0}, {0x0}, {0x7f43e2a5d030}})
	pkg/sentry/syscalls/linux/sys_file.go:91 +0x45
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc011a68000, 0x101, {{0xffffff9c}, {0x560b19a09d29}, {0x80001}, {0x0}, {0x0}, {0x7f43e2a5d030}})
	pkg/sentry/kernel/task_syscall.go:142 +0x9c2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc011a68000, 0x0?, {{0xffffff9c}, {0x560b19a09d29}, {0x80001}, {0x0}, {0x0}, {0x7f43e2a5d030}})
	pkg/sentry/kernel/task_syscall.go:322 +0x7d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc01c28fad0?, 0xc015ab8b40?, {{0xffffff9c}, {0x560b19a09d29}, {0x80001}, {0x0}, {0x0}, {0x7f43e2a5d030}})
	pkg/sentry/kernel/task_syscall.go:282 +0x8f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc011a68000)
	pkg/sentry/kernel/task_syscall.go:257 +0x4c5
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc011a68000?, 0xc011a68000)
	pkg/sentry/kernel/task_run.go:269 +0x1d4b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc011a68000, 0x144c)
	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