Merge tag 'mm-nonmm-stable-2023-08-28-22-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:

 - An extensive rework of kexec and crash Kconfig from Eric DeVolder
   ("refactor Kconfig to consolidate KEXEC and CRASH options")

 - kernel.h slimming work from Andy Shevchenko ("kernel.h: Split out a
   couple of macros to args.h")

 - gdb feature work from Kuan-Ying Lee ("Add GDB memory helper
   commands")

 - vsprintf inclusion rationalization from Andy Shevchenko
   ("lib/vsprintf: Rework header inclusions")

 - Switch the handling of kdump from a udev scheme to in-kernel
   handling, by Eric DeVolder ("crash: Kernel handling of CPU and memory
   hot un/plug")

 - Many singleton patches to various parts of the tree

* tag 'mm-nonmm-stable-2023-08-28-22-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (81 commits)
  document while_each_thread(), change first_tid() to use for_each_thread()
  drivers/char/mem.c: shrink character device's devlist[] array
  x86/crash: optimize CPU changes
  crash: change crash_prepare_elf64_headers() to for_each_possible_cpu()
  crash: hotplug support for kexec_load()
  x86/crash: add x86 crash hotplug support
  crash: memory and CPU hotplug sysfs attributes
  kexec: exclude elfcorehdr from the segment digest
  crash: add generic infrastructure for crash hotplug support
  crash: move a few code bits to setup support of crash hotplug
  kstrtox: consistently use _tolower()
  kill do_each_thread()
  nilfs2: fix WARNING in mark_buffer_dirty due to discarded buffer reuse
  scripts/bloat-o-meter: count weak symbol sizes
  treewide: drop CONFIG_EMBEDDED
  lockdep: fix static memory detection even more
  lib/vsprintf: declare no_hash_pointers in sprintf.h
  lib/vsprintf: split out sprintf() and friends
  kernel/fork: stop playing lockless games for exe_file replacement
  adfs: delete unused "union adfs_dirtail" definition
  ...

1 files changed, 15 insertions, 12 deletions

diff --git a/kernel/cred.c b/kernel/cred.c
index 811ad654abd1..98cb4eca23fb 100644
--- a/kernel/cred.c
+++ b/kernel/cred.c
@@ -4,6 +4,9 @@
  * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
  * Written by David Howells ([email protected])
  */
+
+#define pr_fmt(fmt) "CRED: " fmt
+
 #include <linux/export.h>
 #include <linux/cred.h>
 #include <linux/slab.h>
@@ -835,32 +838,32 @@ EXPORT_SYMBOL(creds_are_invalid);
 static void dump_invalid_creds(const struct cred *cred, const char *label,
 			       const struct task_struct *tsk)
 {
-	printk(KERN_ERR "CRED: %s credentials: %p %s%s%s\n",
+	pr_err("%s credentials: %p %s%s%s\n",
 	       label, cred,
 	       cred == &init_cred ? "[init]" : "",
 	       cred == tsk->real_cred ? "[real]" : "",
 	       cred == tsk->cred ? "[eff]" : "");
-	printk(KERN_ERR "CRED: ->magic=%x, put_addr=%p\n",
+	pr_err("->magic=%x, put_addr=%p\n",
 	       cred->magic, cred->put_addr);
-	printk(KERN_ERR "CRED: ->usage=%d, subscr=%d\n",
+	pr_err("->usage=%d, subscr=%d\n",
 	       atomic_read(&cred->usage),
 	       read_cred_subscribers(cred));
-	printk(KERN_ERR "CRED: ->*uid = { %d,%d,%d,%d }\n",
+	pr_err("->*uid = { %d,%d,%d,%d }\n",
 		from_kuid_munged(&init_user_ns, cred->uid),
 		from_kuid_munged(&init_user_ns, cred->euid),
 		from_kuid_munged(&init_user_ns, cred->suid),
 		from_kuid_munged(&init_user_ns, cred->fsuid));
-	printk(KERN_ERR "CRED: ->*gid = { %d,%d,%d,%d }\n",
+	pr_err("->*gid = { %d,%d,%d,%d }\n",
 		from_kgid_munged(&init_user_ns, cred->gid),
 		from_kgid_munged(&init_user_ns, cred->egid),
 		from_kgid_munged(&init_user_ns, cred->sgid),
 		from_kgid_munged(&init_user_ns, cred->fsgid));
 #ifdef CONFIG_SECURITY
-	printk(KERN_ERR "CRED: ->security is %p\n", cred->security);
+	pr_err("->security is %p\n", cred->security);
 	if ((unsigned long) cred->security >= PAGE_SIZE &&
 	    (((unsigned long) cred->security & 0xffffff00) !=
 	     (POISON_FREE << 24 | POISON_FREE << 16 | POISON_FREE << 8)))
-		printk(KERN_ERR "CRED: ->security {%x, %x}\n",
+		pr_err("->security {%x, %x}\n",
 		       ((u32*)cred->security)[0],
 		       ((u32*)cred->security)[1]);
 #endif
@@ -871,8 +874,8 @@ static void dump_invalid_creds(const struct cred *cred, const char *label,
  */
 void __noreturn __invalid_creds(const struct cred *cred, const char *file, unsigned line)
 {
-	printk(KERN_ERR "CRED: Invalid credentials\n");
-	printk(KERN_ERR "CRED: At %s:%u\n", file, line);
+	pr_err("Invalid credentials\n");
+	pr_err("At %s:%u\n", file, line);
 	dump_invalid_creds(cred, "Specified", current);
 	BUG();
 }
@@ -898,14 +901,14 @@ void __validate_process_creds(struct task_struct *tsk,
 	return;
 
 invalid_creds:
-	printk(KERN_ERR "CRED: Invalid process credentials\n");
-	printk(KERN_ERR "CRED: At %s:%u\n", file, line);
+	pr_err("Invalid process credentials\n");
+	pr_err("At %s:%u\n", file, line);
 
 	dump_invalid_creds(tsk->real_cred, "Real", tsk);
 	if (tsk->cred != tsk->real_cred)
 		dump_invalid_creds(tsk->cred, "Effective", tsk);
 	else
-		printk(KERN_ERR "CRED: Effective creds == Real creds\n");
+		pr_err("Effective creds == Real creds\n");
 	BUG();
 }
 EXPORT_SYMBOL(__validate_process_creds);