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

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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()
This commit is contained in:
Linus Torvalds
2019-05-07 09:18:12 -07:00
parent 573de2a6e8 0f46c78391
commit 0968621917
60 changed files with 410 additions and 272 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
kernel/irq/debugfs.c
View File

@@ -152,7 +152,7 @@ static int irq_debug_show(struct seq_file *m, void *p)
raw_spin_lock_irq(&desc->lock);
data = irq_desc_get_irq_data(desc);
seq_printf(m, "handler: %pf\n", desc->handle_irq);
seq_printf(m, "handler: %ps\n", desc->handle_irq);
seq_printf(m, "device: %s\n", desc->dev_name);
seq_printf(m, "status: 0x%08x\n", desc->status_use_accessors);
irq_debug_show_bits(m, 0, desc->status_use_accessors, irqdesc_states,

2
kernel/irq/handle.c
View File

@@ -149,7 +149,7 @@ irqreturn_t __handle_irq_event_percpu(struct irq_desc *desc, unsigned int *flags
res = action->handler(irq, action->dev_id);
trace_irq_handler_exit(irq, action, res);
if (WARN_ONCE(!irqs_disabled(),"irq %u handler %pF enabled interrupts\n",
if (WARN_ONCE(!irqs_disabled(),"irq %u handler %pS enabled interrupts\n",
irq, action->handler))
local_irq_disable();

2
kernel/irq/manage.c
View File

@@ -781,7 +781,7 @@ int __irq_set_trigger(struct irq_desc *desc, unsigned long flags)
ret = 0;
break;
default:
pr_err("Setting trigger mode %lu for irq %u failed (%pF)\n",
pr_err("Setting trigger mode %lu for irq %u failed (%pS)\n",
flags, irq_desc_get_irq(desc), chip->irq_set_type);
}
if (unmask)

4
kernel/irq/spurious.c
View File

@@ -212,9 +212,9 @@ static void __report_bad_irq(struct irq_desc *desc, irqreturn_t action_ret)
*/
raw_spin_lock_irqsave(&desc->lock, flags);
for_each_action_of_desc(desc, action) {
printk(KERN_ERR "[<%p>] %pf", action->handler, action->handler);
printk(KERN_ERR "[<%p>] %ps", action->handler, action->handler);
if (action->thread_fn)
printk(KERN_CONT " threaded [<%p>] %pf",
printk(KERN_CONT " threaded [<%p>] %ps",
action->thread_fn, action->thread_fn);
printk(KERN_CONT "\n");
}