diff options
Diffstat (limited to 'kernel/livepatch/core.c')
| -rw-r--r-- | kernel/livepatch/core.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c index 0cd39954d5a1..0e73fac55f8e 100644 --- a/kernel/livepatch/core.c +++ b/kernel/livepatch/core.c @@ -59,7 +59,7 @@ static void klp_find_object_module(struct klp_object *obj) if (!klp_is_module(obj)) return; - rcu_read_lock_sched(); + guard(rcu)(); /* * We do not want to block removal of patched modules and therefore * we do not take a reference here. The patches are removed by @@ -75,8 +75,6 @@ static void klp_find_object_module(struct klp_object *obj) */ if (mod && mod->klp_alive) obj->mod = mod; - - rcu_read_unlock_sched(); } static bool klp_initialized(void) @@ -601,9 +599,12 @@ static int klp_add_object_nops(struct klp_patch *patch, } /* - * Add 'nop' functions which simply return to the caller to run - * the original function. The 'nop' functions are added to a - * patch to facilitate a 'replace' mode. + * Add 'nop' functions which simply return to the caller to run the + * original function. + * + * They are added only when the atomic replace mode is used and only for + * functions which are currently livepatched but are no longer included + * in the new livepatch. */ static int klp_add_nops(struct klp_patch *patch) { |