livepatch: use FTRACE_OPS_FL_IPMODIFY

Use the FTRACE_OPS_FL_IPMODIFY flag to prevent conflicts with other
ftrace users who also modify regs->ip.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Reviewed-by: Petr Mladek <pmladek@suse.cz>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 2 insertions, 1 deletions

diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
index 07a2db9d01e6..6f6387912da7 100644
--- a/kernel/livepatch/core.c
+++ b/kernel/livepatch/core.c
@@ -641,7 +641,8 @@ static int klp_init_func(struct klp_object *obj, struct klp_func *func)
 
         ops->private = func;
         ops->func = klp_ftrace_handler;
-        ops->flags = FTRACE_OPS_FL_SAVE_REGS | FTRACE_OPS_FL_DYNAMIC;
+        ops->flags = FTRACE_OPS_FL_SAVE_REGS | FTRACE_OPS_FL_DYNAMIC |
+                     FTRACE_OPS_FL_IPMODIFY;
         func->fops = ops;
         func->state = KLP_DISABLED;