Merge tag 'printk-for-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk

Pull printk updates from Petr Mladek:

 - Allow state reset of printk_once() calls.

 - Prevent crashes when dereferencing invalid pointers in vsprintf().
   Only the first byte is checked for simplicity.

 - Make vsprintf warnings consistent and inlined.

 - Treewide conversion of obsolete %pf, %pF to %ps, %pF printf
   modifiers.

 - Some clean up of vsprintf and test_printf code.

* tag 'printk-for-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk:
  lib/vsprintf: Make function pointer_string static
  vsprintf: Limit the length of inlined error messages
  vsprintf: Avoid confusion between invalid address and value
  vsprintf: Prevent crash when dereferencing invalid pointers
  vsprintf: Consolidate handling of unknown pointer specifiers
  vsprintf: Factor out %pO handler as kobject_string()
  vsprintf: Factor out %pV handler as va_format()
  vsprintf: Factor out %p[iI] handler as ip_addr_string()
  vsprintf: Do not check address of well-known strings
  vsprintf: Consistent %pK handling for kptr_restrict == 0
  vsprintf: Shuffle restricted_pointer()
  printk: Tie printk_once / printk_deferred_once into .data.once for reset
  treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively
  lib/test_printf: Switch to bitmap_zalloc()

1 files changed, 6 insertions, 6 deletions

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 56180c9286f5..faf7622246da 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -2271,7 +2271,7 @@ __acquires(&pool->lock)
 
 	if (unlikely(in_atomic() || lockdep_depth(current) > 0)) {
 		pr_err("BUG: workqueue leaked lock or atomic: %s/0x%08x/%d\n"
-		       "     last function: %pf\n",
+		       "     last function: %ps\n",
 		       current->comm, preempt_count(), task_pid_nr(current),
 		       worker->current_func);
 		debug_show_held_locks(current);
@@ -2590,11 +2590,11 @@ static void check_flush_dependency(struct workqueue_struct *target_wq,
 	worker = current_wq_worker();
 
 	WARN_ONCE(current->flags & PF_MEMALLOC,
-		  "workqueue: PF_MEMALLOC task %d(%s) is flushing !WQ_MEM_RECLAIM %s:%pf",
+		  "workqueue: PF_MEMALLOC task %d(%s) is flushing !WQ_MEM_RECLAIM %s:%ps",
 		  current->pid, current->comm, target_wq->name, target_func);
 	WARN_ONCE(worker && ((worker->current_pwq->wq->flags &
 			      (WQ_MEM_RECLAIM | __WQ_LEGACY)) == WQ_MEM_RECLAIM),
-		  "workqueue: WQ_MEM_RECLAIM %s:%pf is flushing !WQ_MEM_RECLAIM %s:%pf",
+		  "workqueue: WQ_MEM_RECLAIM %s:%ps is flushing !WQ_MEM_RECLAIM %s:%ps",
 		  worker->current_pwq->wq->name, worker->current_func,
 		  target_wq->name, target_func);
 }
@@ -4581,7 +4581,7 @@ void print_worker_info(const char *log_lvl, struct task_struct *task)
 	probe_kernel_read(desc, worker->desc, sizeof(desc) - 1);
 
 	if (fn || name[0] || desc[0]) {
-		printk("%sWorkqueue: %s %pf", log_lvl, name, fn);
+		printk("%sWorkqueue: %s %ps", log_lvl, name, fn);
 		if (strcmp(name, desc))
 			pr_cont(" (%s)", desc);
 		pr_cont("\n");
@@ -4606,7 +4606,7 @@ static void pr_cont_work(bool comma, struct work_struct *work)
 		pr_cont("%s BAR(%d)", comma ? "," : "",
 			task_pid_nr(barr->task));
 	} else {
-		pr_cont("%s %pf", comma ? "," : "", work->func);
+		pr_cont("%s %ps", comma ? "," : "", work->func);
 	}
 }
 
@@ -4638,7 +4638,7 @@ static void show_pwq(struct pool_workqueue *pwq)
 			if (worker->current_pwq != pwq)
 				continue;
 
-			pr_cont("%s %d%s:%pf", comma ? "," : "",
+			pr_cont("%s %d%s:%ps", comma ? "," : "",
 				task_pid_nr(worker->task),
 				worker == pwq->wq->rescuer ? "(RESCUER)" : "",
 				worker->current_func);