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authorPetr Mladek <pmladek@suse.com>2019-02-04 14:56:53 +0100
committerPetr Mladek <pmladek@suse.com>2019-02-06 11:03:14 +0100
commita087cdd4073b78f4739ce6709daeb4f3267b4dbf (patch)
tree49acb85ad5918dd9c12ccf1e408cf5acd65ad3e6 /kernel/livepatch
parent49ee4dd2e753cd13d157361d4bd28b548e3d0ee7 (diff)
downloadlinux-a087cdd4073b78f4739ce6709daeb4f3267b4dbf.tar.bz2
livepatch: Module coming and going callbacks can proceed with all listed patches
Livepatches can no longer get enabled and disabled repeatedly. The list klp_patches contains only enabled patches and eventually the patch in transition. The module coming and going callbacks do no longer need to check for these state. They have to proceed with all listed patches. Suggested-by: Josh Poimboeuf <jpoimboe@redhat.com> Acked-by: Miroslav Benes <mbenes@suse.cz> Acked-by: Joe Lawrence <joe.lawrence@redhat.com> Signed-off-by: Petr Mladek <pmladek@suse.com>
Diffstat (limited to 'kernel/livepatch')
-rw-r--r--kernel/livepatch/core.c26
1 files changed, 6 insertions, 20 deletions
diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
index 4b7f55d9e89c..d1af69e9f0e3 100644
--- a/kernel/livepatch/core.c
+++ b/kernel/livepatch/core.c
@@ -1141,21 +1141,14 @@ static void klp_cleanup_module_patches_limited(struct module *mod,
if (!klp_is_module(obj) || strcmp(obj->name, mod->name))
continue;
- /*
- * Only unpatch the module if the patch is enabled or
- * is in transition.
- */
- if (patch->enabled || patch == klp_transition_patch) {
-
- if (patch != klp_transition_patch)
- klp_pre_unpatch_callback(obj);
+ if (patch != klp_transition_patch)
+ klp_pre_unpatch_callback(obj);
- pr_notice("reverting patch '%s' on unloading module '%s'\n",
- patch->mod->name, obj->mod->name);
- klp_unpatch_object(obj);
+ pr_notice("reverting patch '%s' on unloading module '%s'\n",
+ patch->mod->name, obj->mod->name);
+ klp_unpatch_object(obj);
- klp_post_unpatch_callback(obj);
- }
+ klp_post_unpatch_callback(obj);
klp_free_object_loaded(obj);
break;
@@ -1194,13 +1187,6 @@ int klp_module_coming(struct module *mod)
goto err;
}
- /*
- * Only patch the module if the patch is enabled or is
- * in transition.
- */
- if (!patch->enabled && patch != klp_transition_patch)
- break;
-
pr_notice("applying patch '%s' to loading module '%s'\n",
patch->mod->name, obj->mod->name);