6.6-stable review patch. If anyone has any objections, please let me know.
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From: Petr Pavlu petr.pavlu@suse.com
commit bdbddb109c75365d22ec4826f480c5e75869e1cb upstream.
Commit a8b9cf62ade1 ("ftrace: Fix DIRECT_CALLS to use SAVE_REGS by default") attempted to fix an issue with direct trampolines on x86, see its description for details. However, it wrongly referenced the HAVE_DYNAMIC_FTRACE_WITH_REGS config option and the problem is still present.
Add the missing "CONFIG_" prefix for the logic to work as intended.
Link: https://lore.kernel.org/linux-trace-kernel/20240213132434.22537-1-petr.pavlu...
Fixes: a8b9cf62ade1 ("ftrace: Fix DIRECT_CALLS to use SAVE_REGS by default") Signed-off-by: Petr Pavlu petr.pavlu@suse.com Signed-off-by: Steven Rostedt (Google) rostedt@goodmis.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- kernel/trace/ftrace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -5331,7 +5331,7 @@ static int register_ftrace_function_nolo * not support ftrace_regs_caller but direct_call, use SAVE_ARGS so that it * jumps from ftrace_caller for multiple ftrace_ops. */ -#ifndef HAVE_DYNAMIC_FTRACE_WITH_REGS +#ifndef CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS #define MULTI_FLAGS (FTRACE_OPS_FL_DIRECT | FTRACE_OPS_FL_SAVE_ARGS) #else #define MULTI_FLAGS (FTRACE_OPS_FL_DIRECT | FTRACE_OPS_FL_SAVE_REGS)