[RESEND PATCH v4 09/10] lib/refcount: Remove unused 'refcount_error_report()' function

From: Will Deacon
Date: Thu Nov 21 2019 - 06:59:35 EST


'refcount_error_report()' has no callers. Remove it.

Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Elena Reshetova <elena.reshetova@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Acked-by: Kees Cook <keescook@xxxxxxxxxxxx>
Signed-off-by: Will Deacon <will@xxxxxxxxxx>
---
include/linux/kernel.h | 7 -------
kernel/panic.c | 11 -----------
2 files changed, 18 deletions(-)

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index d83d403dac2e..09f759228e3f 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -328,13 +328,6 @@ extern int oops_may_print(void);
void do_exit(long error_code) __noreturn;
void complete_and_exit(struct completion *, long) __noreturn;

-#ifdef CONFIG_ARCH_HAS_REFCOUNT
-void refcount_error_report(struct pt_regs *regs, const char *err);
-#else
-static inline void refcount_error_report(struct pt_regs *regs, const char *err)
-{ }
-#endif
-
/* Internal, do not use. */
int __must_check _kstrtoul(const char *s, unsigned int base, unsigned long *res);
int __must_check _kstrtol(const char *s, unsigned int base, long *res);
diff --git a/kernel/panic.c b/kernel/panic.c
index 47e8ebccc22b..10d05fd4f9c3 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -670,17 +670,6 @@ EXPORT_SYMBOL(__stack_chk_fail);

#endif

-#ifdef CONFIG_ARCH_HAS_REFCOUNT
-void refcount_error_report(struct pt_regs *regs, const char *err)
-{
- WARN_RATELIMIT(1, "refcount_t %s at %pB in %s[%d], uid/euid: %u/%u\n",
- err, (void *)instruction_pointer(regs),
- current->comm, task_pid_nr(current),
- from_kuid_munged(&init_user_ns, current_uid()),
- from_kuid_munged(&init_user_ns, current_euid()));
-}
-#endif
-
core_param(panic, panic_timeout, int, 0644);
core_param(panic_print, panic_print, ulong, 0644);
core_param(pause_on_oops, pause_on_oops, int, 0644);
--
2.24.0.432.g9d3f5f5b63-goog