On Mon, May 19, 2025 at 9:38 AM David Wang <00107082@xxxxxxx> wrote: > > When module load fails after memory for codetag section is ready, > codetag section memory will not be properly released. This > causes memory leak, and if next module load happens to get the > same module address, codetag may pick the uninitialized section > when manipulating tags during module unload, and leads to > "unable to handle page fault" BUG. > > Closes: https://lore.kernel.org/all/20250516131246.6244-1-00107082@xxxxxxx/ > Signed-off-by: David Wang <00107082@xxxxxxx> > Acked-by: Suren Baghdasaryan <surenb@xxxxxxxxxx> Sending to Andrew for adding into the mm tree. > --- > kernel/module/main.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/kernel/module/main.c b/kernel/module/main.c > index a2859dc3eea6..5c6ab20240a6 100644 > --- a/kernel/module/main.c > +++ b/kernel/module/main.c > @@ -2829,6 +2829,7 @@ static void module_deallocate(struct module *mod, struct load_info *info) > { > percpu_modfree(mod); > module_arch_freeing_init(mod); > + codetag_free_module_sections(mod); > > free_mod_mem(mod); > } > -- > 2.39.2 >
