Merge tag 'objtool-urgent-2025-04-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool fixes from Ingo Molnar:
 "These are objtool fixes and updates by Josh Poimboeuf, centered around
  the fallout from the new CONFIG_OBJTOOL_WERROR=y feature, which,
  despite its default-off nature, increased the profile/impact of
  objtool warnings:

   - Improve error handling and the presentation of warnings/errors

   - Revert the new summary warning line that some test-bot tools
     interpreted as new regressions

   - Fix a number of objtool warnings in various drivers, core kernel
     code and architecture code. About half of them are potential
     problems related to out-of-bounds accesses or potential undefined
     behavior, the other half are additional objtool annotations

   - Update objtool to latest (known) compiler quirks and objtool bugs
     triggered by compiler code generation

   - Misc fixes"

* tag 'objtool-urgent-2025-04-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits)
  objtool/loongarch: Add unwind hints in prepare_frametrace()
  rcu-tasks: Always inline rcu_irq_work_resched()
  context_tracking: Always inline ct_{nmi,irq}_{enter,exit}()
  sched/smt: Always inline sched_smt_active()
  objtool: Fix verbose disassembly if CROSS_COMPILE isn't set
  objtool: Change "warning:" to "error: " for fatal errors
  objtool: Always fail on fatal errors
  Revert "objtool: Increase per-function WARN_FUNC() rate limit"
  objtool: Append "()" to function name in "unexpected end of section" warning
  objtool: Ignore end-of-section jumps for KCOV/GCOV
  objtool: Silence more KCOV warnings, part 2
  objtool, drm/vmwgfx: Don't ignore vmw_send_msg() for ORC
  objtool: Fix STACK_FRAME_NON_STANDARD for cold subfunctions
  objtool: Fix segfault in ignore_unreachable_insn()
  objtool: Fix NULL printf() '%s' argument in builtin-check.c:save_argv()
  objtool, lkdtm: Obfuscate the do_nothing() pointer
  objtool, regulator: rk808: Remove potential undefined behavior in rk806_set_mode_dcdc()
  objtool, ASoC: codecs: wcd934x: Remove potential undefined behavior in wcd934x_slim_irq_handler()
  objtool, Input: cyapa - Remove undefined behavior in cyapa_update_fw_store()
  objtool, panic: Disable SMAP in __stack_chk_fail()
  ...

5 files changed, 7 insertions, 11 deletions

diff --git a/include/linux/context_tracking_irq.h b/include/linux/context_tracking_irq.h
index c50b5670c4a5..197916ee91a4 100644
--- a/include/linux/context_tracking_irq.h
+++ b/include/linux/context_tracking_irq.h
@@ -10,12 +10,12 @@ void ct_irq_exit_irqson(void);
 void ct_nmi_enter(void);
 void ct_nmi_exit(void);
 #else
-static inline void ct_irq_enter(void) { }
-static inline void ct_irq_exit(void) { }
+static __always_inline void ct_irq_enter(void) { }
+static __always_inline void ct_irq_exit(void) { }
 static inline void ct_irq_enter_irqson(void) { }
 static inline void ct_irq_exit_irqson(void) { }
-static inline void ct_nmi_enter(void) { }
-static inline void ct_nmi_exit(void) { }
+static __always_inline void ct_nmi_enter(void) { }
+static __always_inline void ct_nmi_exit(void) { }
 #endif
 
 #endif
diff --git a/include/linux/linkage.h b/include/linux/linkage.h
index 5c8865bb59d9..b11660b706c5 100644
--- a/include/linux/linkage.h
+++ b/include/linux/linkage.h
@@ -134,10 +134,6 @@
 	.size name, .-name
 #endif
 
-/* If symbol 'name' is treated as a subroutine (gets called, and returns)
- * then please use ENDPROC to mark 'name' as STT_FUNC for the benefit of
- * static analysis tools such as stack depth analyzer.
- */
 #ifndef ENDPROC
 /* deprecated, use SYM_FUNC_END */
 #define ENDPROC(name) \
diff --git a/include/linux/objtool.h b/include/linux/objtool.h
index 3ca965a2ddc8..366ad004d794 100644
--- a/include/linux/objtool.h
+++ b/include/linux/objtool.h
@@ -69,7 +69,7 @@
  * In asm, there are two kinds of code: normal C-type callable functions and
  * the rest.  The normal callable functions can be called by other code, and
  * don't do anything unusual with the stack.  Such normal callable functions
- * are annotated with the ENTRY/ENDPROC macros.  Most asm code falls in this
+ * are annotated with SYM_FUNC_{START,END}.  Most asm code falls in this
  * category.  In this case, no special debugging annotations are needed because
  * objtool can automatically generate the ORC data for the ORC unwinder to read
  * at runtime.
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index f8159f8a7d73..120536f4c6eb 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -132,7 +132,7 @@ static inline void rcu_sysrq_end(void) { }
 #if defined(CONFIG_NO_HZ_FULL) && (!defined(CONFIG_GENERIC_ENTRY) || !defined(CONFIG_KVM_XFER_TO_GUEST_WORK))
 void rcu_irq_work_resched(void);
 #else
-static inline void rcu_irq_work_resched(void) { }
+static __always_inline void rcu_irq_work_resched(void) { }
 #endif
 
 #ifdef CONFIG_RCU_NOCB_CPU
diff --git a/include/linux/sched/smt.h b/include/linux/sched/smt.h
index fb1e295e7e63..166b19af956f 100644
--- a/include/linux/sched/smt.h
+++ b/include/linux/sched/smt.h
@@ -12,7 +12,7 @@ static __always_inline bool sched_smt_active(void)
 	return static_branch_likely(&sched_smt_present);
 }
 #else
-static inline bool sched_smt_active(void) { return false; }
+static __always_inline bool sched_smt_active(void) { return false; }
 #endif
 
 void arch_smt_update(void);