From: maxin <john.maxin@nokia.com>
To: dedekind1@gmail.com
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>,
linux-mtd@lists.infradead.org,
David Woodhouse <dwmw2@infradead.org>
Subject: Re: [PATCH] drivers: mtd: mtdswap: fix possible null dereference
Date: Fri, 20 May 2011 14:22:25 +0100 [thread overview]
Message-ID: <4DD66B11.4070605@nokia.com> (raw)
In-Reply-To: <1305886801.2630.132.camel@localhost>
This patch fixes the possible null dereference of the variable "oinfo"
Thanks to Coverity for spotting this.
Signed-off-by: Maxin B. John <john.maxin@nokia.com>
---
diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c
index fed215c..62ddb3a 100644
--- a/drivers/mtd/mtdswap.c
+++ b/drivers/mtd/mtdswap.c
@@ -1450,7 +1450,13 @@ static void mtdswap_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
}
oinfo = mtd->ecclayout;
- if (!mtd->oobsize || !oinfo || oinfo->oobavail < MTDSWAP_OOBSIZE) {
+ if (!oinfo) {
+ printk(KERN_ERR "%s: mtd%d does not have OOB"
+ "\n", MTDSWAP_PREFIX, mtd->index);
+ return;
+ }
+
+ if (!mtd->oobsize || oinfo->oobavail < MTDSWAP_OOBSIZE) {
printk(KERN_ERR "%s: Not enough free bytes in OOB, "
"%d available, %zu needed.\n",
MTDSWAP_PREFIX, oinfo->oobavail, MTDSWAP_OOBSIZE);
next prev parent reply other threads:[~2011-05-20 11:24 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-18 12:00 [PATCH] drivers: mtd: mtdswap: fix possible null dereference maxin
2011-05-20 5:46 ` Artem Bityutskiy
2011-05-20 11:54 ` maxin
2011-05-20 10:20 ` Artem Bityutskiy
2011-05-20 13:22 ` maxin [this message]
2011-05-20 12:08 ` Artem Bityutskiy
2011-05-20 14:34 ` Maxin B. John
2011-05-20 12:10 ` Artem Bityutskiy
2011-05-20 14:44 ` Maxin B. John
2011-05-20 12:47 ` Artem Bityutskiy
2011-05-20 13:51 ` Artem Bityutskiy
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