From: Tanya Brokhman <tlinder@codeaurora.org>
To: dedekind1@gmail.com
Cc: linux-mtd@lists.infradead.org,
Tanya Brokhman <tlinder@codeaurora.org>,
linux-kernel@vger.kernel.org (open list)
Subject: [RFC/PATCH] mtd: ubi: Test return value of __wl_get_peb
Date: Tue, 1 Apr 2014 11:01:12 +0300 [thread overview]
Message-ID: <1396339273-15904-1-git-send-email-tlinder@codeaurora.org> (raw)
In case of an error (if there are not free PEB's for example),
__wl_get_peb will return a negative value. In order to prevent access
violation we need to test the returned value prior to using it later on.
Signed-off-by: Tatyana Brokhman <tlinder@codeaurora.org>
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 02317c1..457ead3 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -684,6 +684,9 @@ int ubi_wl_get_peb(struct ubi_device *ubi)
peb = __wl_get_peb(ubi);
spin_unlock(&ubi->wl_lock);
+ if (peb < 0)
+ return peb;
+
err = ubi_self_check_all_ff(ubi, peb, ubi->vid_hdr_aloffset,
ubi->peb_size - ubi->vid_hdr_aloffset);
if (err) {
--
1.7.6
--
QUALCOMM ISRAEL, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation
next reply other threads:[~2014-04-01 8:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-01 8:01 Tanya Brokhman [this message]
2014-04-07 5:22 ` Dolev Raviv
2014-04-07 13:14 ` Richard Weinberger
2014-04-08 13:44 ` Artem Bityutskiy
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