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authorJosh Poimboeuf <jpoimboe@redhat.com>2015-01-09 14:03:04 -0600
committerJiri Kosina <jkosina@suse.cz>2015-01-09 22:27:47 +0100
commit99590ba565a22c9f58f7528a94881d0455eef018 (patch)
tree5c0fc1368e6e6ea99b8bf644a706ed276c051808 /kernel/livepatch
parentb9dfe0bed999d23ee8838d389637dd8aef83fafa (diff)
downloadlinux-sh-99590ba565a22c9f58f7528a94881d0455eef018.tar.gz
livepatch: fix deferred module patching order
When applying multiple patches to a module, if the module is loaded after the patches are loaded, the patches are applied in reverse order: $ insmod patch1.ko [ 43.172992] livepatch: enabling patch 'patch1' $ insmod patch2.ko [ 46.571563] livepatch: enabling patch 'patch2' $ modprobe nfsd [ 52.888922] livepatch: applying patch 'patch2' to loading module 'nfsd' [ 52.899847] livepatch: applying patch 'patch1' to loading module 'nfsd' Fix the loading order by storing the klp_patches list in queue order. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'kernel/livepatch')
-rw-r--r--kernel/livepatch/core.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
index ce42d3b930dc..3d9c00b5223a 100644
--- a/kernel/livepatch/core.c
+++ b/kernel/livepatch/core.c
@@ -739,7 +739,7 @@ static int klp_init_patch(struct klp_patch *patch)
goto free;
}
- list_add(&patch->list, &klp_patches);
+ list_add_tail(&patch->list, &klp_patches);
mutex_unlock(&klp_mutex);