linux-kernel - [PATCH -tip] x86,ioapic: use snrpintf while set names for IO-APIC resourses

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Date:	Sun, 8 Nov 2009 18:54:31 +0300
From:	Cyrill Gorcunov <gorcunov@...nvz.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Yinghai Lu <yinghai@...nel.org>, x86team <x86@...nel.org>
Subject: [PATCH -tip] x86,ioapic: use snrpintf while set names for IO-APIC
	resourses

We should be ready that one day MAX_IO_APICS may raise its
number. To prevent memory overwrite we're to use safe
snprintf while set IO-APIC resourse name.

Signed-off-by: Cyrill Gorcunov <gorcunov@...nvz.org>
---
 arch/x86/kernel/apic/io_apic.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6.git/arch/x86/kernel/apic/io_apic.c
=====================================================================
--- linux-2.6.git.orig/arch/x86/kernel/apic/io_apic.c
+++ linux-2.6.git/arch/x86/kernel/apic/io_apic.c
@@ -4099,7 +4099,7 @@ static struct resource * __init ioapic_s
 	for (i = 0; i < nr_ioapics; i++) {
 		res[i].name = mem;
 		res[i].flags = IORESOURCE_MEM | IORESOURCE_BUSY;
-		sprintf(mem,  "IOAPIC %u", i);
+		snprintf(mem, IOAPIC_RESOURCE_NAME_SIZE, "IOAPIC %u", i);
 		mem += IOAPIC_RESOURCE_NAME_SIZE;
 	}
 
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