On Wed, Jul 20, 2022 at 08:53:53AM +0200, Helge Deller wrote: > On 7/20/22 05:29, Al Viro wrote: > > On Sat, Jul 16, 2022 at 07:27:30AM +0200, Helge Deller wrote: > >> On 7/15/22 15:33, Hillf Danton wrote: > > > >> [108565.341434] dentry->d_u.d_rcu = 0x416be770 > > > > Incidentally, does that match the address of __d_free() on your build, > > or is it something different? > > I don't think it's __d_free(). > The source is: > pr_err("dentry->d_u.d_rcu = %pS\n", dentry->d_u.d_rcu.func); > so the "%pS" would probably have resolved the pointer to string "__d_free" (or something else). ???? That should've taken a word from desc->addr and printed it. If it had managed to get to a string (you'd needed to have CONFIG_KALLSYMS enabled), it would've printed it as a string, not as hex address. Seriously, check System.map for that kernel...