Commit cb00e99c authored Aug 21, 2007 by Robin Getz Committed by Linus Torvalds Aug 21, 2007

fix - ensure we don't use bootconsoles after init has been released



Gerd Hoffmann pointed out that my patch from yesterday can lead
to a null pointer dereference if the kernel is booted with no
console, and no earlyprintk defined. This fixes that issue.

Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 15f6ddc7

kernel/printk.c

+6 −4

Original line number	Diff line number	Diff line
		@@ -1085,11 +1085,13 @@ EXPORT_SYMBOL(unregister_console);

		static int __init disable_boot_consoles(void)
		{
		if (console_drivers != NULL) {
		if (console_drivers->flags & CON_BOOT) {
		printk(KERN_INFO "turn off boot console %s%d\n",
		console_drivers->name, console_drivers->index);
		return unregister_console(console_drivers);
		}
		}
		return 0;
		}
		late_initcall(disable_boot_consoles);