linux-kernel - [PATCH] drivers/char/vt.c: check kmalloc() return value.

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Message-Id: <20070308232713.ef9c608e.amit2030@gmail.com>
Date:	Thu, 8 Mar 2007 23:27:13 -0800
From:	Amit Choudhary <amit2030@...il.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH] drivers/char/vt.c: check kmalloc() return value.

Description: Check the return value of kmalloc() in function con_init(), in file drivers/char/vt.c.

Signed-off-by: Amit Choudhary <amit2030@...il.com>

diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 87587b4..6aa08cb 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -2640,6 +2640,15 @@ static int __init con_init(void)
 	 */
 	for (currcons = 0; currcons < MIN_NR_CONSOLES; currcons++) {
 		vc_cons[currcons].d = vc = alloc_bootmem(sizeof(struct vc_data));
+		if (!vc_cons[currcons].d) {
+			for (--currcons; currcons >= 0; currcons--) {
+				kfree(vc_cons[currcons].d);
+				vc_cons[currcons].d = NULL;
+			}
+			release_console_sem();
+			return -ENOMEM;
+		}
+
 		visual_init(vc, currcons, 1);
 		vc->vc_screenbuf = (unsigned short *)alloc_bootmem(vc->vc_screenbuf_size);
 		vc->vc_kmalloced = 0;
-
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