Merge tag 'core-urgent-2025-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull misc core fixes from Ingo Molnar:

 - Improve bug reporting

 - Suppress W=1 format warning

 - Improve rseq scalability on Clang builds

* tag 'core-urgent-2025-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  rseq: Always inline rseq_debug_syscall_return()
  bug: Hush suggest-attribute=format for __warn_printf()
  bug: Let report_bug_entry() provide the correct bugaddr

Author: torvalds

include/linux/rseq_entry.h

@@ -596,7 +596,7 @@ static __always_inline void rseq_exit_to_user_mode_legacy(void)
 
 void __rseq_debug_syscall_return(struct pt_regs *regs);
 
-static inline void rseq_debug_syscall_return(struct pt_regs *regs)
+static __always_inline void rseq_debug_syscall_return(struct pt_regs *regs)
 {
 	if (static_branch_unlikely(&rseq_debug_enabled))
 		__rseq_debug_syscall_return(regs);

lib/bug.c

@@ -173,6 +173,9 @@ struct bug_entry *find_bug(unsigned long bugaddr)
 	return module_find_bug(bugaddr);
 }
 
+__diag_push();
+__diag_ignore(GCC, all, "-Wsuggest-attribute=format",
+	      "Not a valid __printf() conversion candidate.");
 static void __warn_printf(const char *fmt, struct pt_regs *regs)
 {
 	if (!fmt)
@@ -192,6 +195,7 @@ static void __warn_printf(const char *fmt, struct pt_regs *regs)
 
 	printk("%s", fmt);
 }
+__diag_pop();
 
 static enum bug_trap_type __report_bug(struct bug_entry *bug, unsigned long bugaddr, struct pt_regs *regs)
 {
@@ -262,7 +266,7 @@ enum bug_trap_type report_bug_entry(struct bug_entry *bug, struct pt_regs *regs)
 	bool rcu = false;
 
 	rcu = warn_rcu_enter();
-	ret = __report_bug(bug, 0, regs);
+	ret = __report_bug(bug, bug_addr(bug), regs);
 	warn_rcu_exit(rcu);
 
 	return ret;