[tip: locking/core] locking/refcount: Remove unused 'refcount_error_report()' function

[tip-bot2 for Will Deacon]

The following commit has been merged into the locking/core branch of tip:

Commit-ID:     2f30b36943adca070f2e1551f701bd524ed1ae5a
Gitweb:        https://git.kernel.org/tip/2f30b36943adca070f2e1551f701bd524ed1ae5a
Author:        Will Deacon <will@xxxxxxxxxx>
AuthorDate:    Thu, 21 Nov 2019 11:59:01 
Committer:     Ingo Molnar <mingo@xxxxxxxxxx>
CommitterDate: Mon, 25 Nov 2019 09:15:42 +01:00

locking/refcount: Remove unused 'refcount_error_report()' function

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

Signed-off-by: Will Deacon <will@xxxxxxxxxx>
Reviewed-by: Ard Biesheuvel <ardb@xxxxxxxxxx>
Acked-by: Kees Cook <keescook@xxxxxxxxxxxx>
Tested-by: Hanjun Guo <guohanjun@xxxxxxxxxx>
Cc: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
Cc: Elena Reshetova <elena.reshetova@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/20191121115902.2551-10-will@xxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@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 d83d403..09f7592 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 f470a03..b69ee9e 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -671,17 +671,6 @@ 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);