[2.6 patch] fix array overrun in drivers/char/mwave/mwavedd.c

[Adrian Bunk]

From: Eric Sesterhenn <snakebyte@xxxxxx>

this fixes coverity id #489.
Since the last element in the array is always ARRAY_SIZE-1
we have to check for ipcnum >= ARRAY_SIZE()

Signed-off-by: Eric Sesterhenn <snakebyte@xxxxxx>
Signed-off-by: Adrian Bunk <bunk@xxxxxxxxx>

---

This patch was sent by Eric Sesterhenn on:
- 9 Apr 2006

--- linux-2.6.17-rc1/drivers/char/mwave/mwavedd.c.orig	2006-04-09 19:45:54.000000000 +0200
+++ linux-2.6.17-rc1/drivers/char/mwave/mwavedd.c	2006-04-09 19:46:07.000000000 +0200
@@ -271,7 +271,7 @@ static int mwave_ioctl(struct inode *ino
 				ipcnum,
 				pDrvData->IPCs[ipcnum].usIntCount);
 	
-			if (ipcnum > ARRAY_SIZE(pDrvData->IPCs)) {
+			if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
 				PRINTK_ERROR(KERN_ERR_MWAVE
 						"mwavedd::mwave_ioctl:"
 						" IOCTL_MW_REGISTER_IPC:"


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