From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: Liang Yang <liang.yang@amlogic.com>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>,
Neil Armstrong <narmstrong@baylibre.com>,
Kevin Hilman <khilman@baylibre.com>,
Jerome Brunet <jbrunet@baylibre.com>,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
Yixun Lan <yixun.lan@amlogic.com>,
Jianxin Pan <jianxin.pan@amlogic.com>
Cc: linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org,
Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
linux-mtd@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-amlogic@lists.infradead.org
Subject: [PATCH] mtd: rawnand: meson: Fix a potential double free issue
Date: Fri, 20 May 2022 18:41:40 +0200 [thread overview]
Message-ID: <ec15c358b8063f7c50ff4cd628cf0d2e14e43f49.1653064877.git.christophe.jaillet@wanadoo.fr> (raw)
When meson_nfc_nand_chip_cleanup() is called, it will call:
meson_nfc_free_buffer(&meson_chip->nand);
nand_cleanup(&meson_chip->nand);
nand_cleanup() in turn will call nand_detach() which calls the
.detach_chip() which is here meson_nand_detach_chip().
meson_nand_detach_chip() already calls meson_nfc_free_buffer(), so we
could double free some memory.
Fix it by removing the unneeded explicit call to meson_nfc_free_buffer().
Fixes: 8fae856c5350 ("mtd: rawnand: meson: add support for Amlogic NAND flash controller")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
This patch is speculative, so review with care.
---
drivers/mtd/nand/raw/meson_nand.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/mtd/nand/raw/meson_nand.c b/drivers/mtd/nand/raw/meson_nand.c
index ac3be92872d0..032180183339 100644
--- a/drivers/mtd/nand/raw/meson_nand.c
+++ b/drivers/mtd/nand/raw/meson_nand.c
@@ -1307,7 +1307,6 @@ static int meson_nfc_nand_chip_cleanup(struct meson_nfc *nfc)
if (ret)
return ret;
- meson_nfc_free_buffer(&meson_chip->nand);
nand_cleanup(&meson_chip->nand);
list_del(&meson_chip->node);
}
--
2.34.1
WARNING: multiple messages have this Message-ID (diff)
From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: Liang Yang <liang.yang@amlogic.com>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>,
Neil Armstrong <narmstrong@baylibre.com>,
Kevin Hilman <khilman@baylibre.com>,
Jerome Brunet <jbrunet@baylibre.com>,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
Yixun Lan <yixun.lan@amlogic.com>,
Jianxin Pan <jianxin.pan@amlogic.com>
Cc: linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org,
Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
linux-mtd@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-amlogic@lists.infradead.org
Subject: [PATCH] mtd: rawnand: meson: Fix a potential double free issue
Date: Fri, 20 May 2022 18:41:40 +0200 [thread overview]
Message-ID: <ec15c358b8063f7c50ff4cd628cf0d2e14e43f49.1653064877.git.christophe.jaillet@wanadoo.fr> (raw)
When meson_nfc_nand_chip_cleanup() is called, it will call:
meson_nfc_free_buffer(&meson_chip->nand);
nand_cleanup(&meson_chip->nand);
nand_cleanup() in turn will call nand_detach() which calls the
.detach_chip() which is here meson_nand_detach_chip().
meson_nand_detach_chip() already calls meson_nfc_free_buffer(), so we
could double free some memory.
Fix it by removing the unneeded explicit call to meson_nfc_free_buffer().
Fixes: 8fae856c5350 ("mtd: rawnand: meson: add support for Amlogic NAND flash controller")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
This patch is speculative, so review with care.
---
drivers/mtd/nand/raw/meson_nand.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/mtd/nand/raw/meson_nand.c b/drivers/mtd/nand/raw/meson_nand.c
index ac3be92872d0..032180183339 100644
--- a/drivers/mtd/nand/raw/meson_nand.c
+++ b/drivers/mtd/nand/raw/meson_nand.c
@@ -1307,7 +1307,6 @@ static int meson_nfc_nand_chip_cleanup(struct meson_nfc *nfc)
if (ret)
return ret;
- meson_nfc_free_buffer(&meson_chip->nand);
nand_cleanup(&meson_chip->nand);
list_del(&meson_chip->node);
}
--
2.34.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
WARNING: multiple messages have this Message-ID (diff)
From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: Liang Yang <liang.yang@amlogic.com>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>,
Neil Armstrong <narmstrong@baylibre.com>,
Kevin Hilman <khilman@baylibre.com>,
Jerome Brunet <jbrunet@baylibre.com>,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
Yixun Lan <yixun.lan@amlogic.com>,
Jianxin Pan <jianxin.pan@amlogic.com>
Cc: linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org,
Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
linux-mtd@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-amlogic@lists.infradead.org
Subject: [PATCH] mtd: rawnand: meson: Fix a potential double free issue
Date: Fri, 20 May 2022 18:41:40 +0200 [thread overview]
Message-ID: <ec15c358b8063f7c50ff4cd628cf0d2e14e43f49.1653064877.git.christophe.jaillet@wanadoo.fr> (raw)
When meson_nfc_nand_chip_cleanup() is called, it will call:
meson_nfc_free_buffer(&meson_chip->nand);
nand_cleanup(&meson_chip->nand);
nand_cleanup() in turn will call nand_detach() which calls the
.detach_chip() which is here meson_nand_detach_chip().
meson_nand_detach_chip() already calls meson_nfc_free_buffer(), so we
could double free some memory.
Fix it by removing the unneeded explicit call to meson_nfc_free_buffer().
Fixes: 8fae856c5350 ("mtd: rawnand: meson: add support for Amlogic NAND flash controller")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
This patch is speculative, so review with care.
---
drivers/mtd/nand/raw/meson_nand.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/mtd/nand/raw/meson_nand.c b/drivers/mtd/nand/raw/meson_nand.c
index ac3be92872d0..032180183339 100644
--- a/drivers/mtd/nand/raw/meson_nand.c
+++ b/drivers/mtd/nand/raw/meson_nand.c
@@ -1307,7 +1307,6 @@ static int meson_nfc_nand_chip_cleanup(struct meson_nfc *nfc)
if (ret)
return ret;
- meson_nfc_free_buffer(&meson_chip->nand);
nand_cleanup(&meson_chip->nand);
list_del(&meson_chip->node);
}
--
2.34.1
_______________________________________________
linux-amlogic mailing list
linux-amlogic@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-amlogic
WARNING: multiple messages have this Message-ID (diff)
From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: Liang Yang <liang.yang@amlogic.com>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>,
Neil Armstrong <narmstrong@baylibre.com>,
Kevin Hilman <khilman@baylibre.com>,
Jerome Brunet <jbrunet@baylibre.com>,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
Yixun Lan <yixun.lan@amlogic.com>,
Jianxin Pan <jianxin.pan@amlogic.com>
Cc: linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org,
Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
linux-mtd@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-amlogic@lists.infradead.org
Subject: [PATCH] mtd: rawnand: meson: Fix a potential double free issue
Date: Fri, 20 May 2022 18:41:40 +0200 [thread overview]
Message-ID: <ec15c358b8063f7c50ff4cd628cf0d2e14e43f49.1653064877.git.christophe.jaillet@wanadoo.fr> (raw)
When meson_nfc_nand_chip_cleanup() is called, it will call:
meson_nfc_free_buffer(&meson_chip->nand);
nand_cleanup(&meson_chip->nand);
nand_cleanup() in turn will call nand_detach() which calls the
.detach_chip() which is here meson_nand_detach_chip().
meson_nand_detach_chip() already calls meson_nfc_free_buffer(), so we
could double free some memory.
Fix it by removing the unneeded explicit call to meson_nfc_free_buffer().
Fixes: 8fae856c5350 ("mtd: rawnand: meson: add support for Amlogic NAND flash controller")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
This patch is speculative, so review with care.
---
drivers/mtd/nand/raw/meson_nand.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/mtd/nand/raw/meson_nand.c b/drivers/mtd/nand/raw/meson_nand.c
index ac3be92872d0..032180183339 100644
--- a/drivers/mtd/nand/raw/meson_nand.c
+++ b/drivers/mtd/nand/raw/meson_nand.c
@@ -1307,7 +1307,6 @@ static int meson_nfc_nand_chip_cleanup(struct meson_nfc *nfc)
if (ret)
return ret;
- meson_nfc_free_buffer(&meson_chip->nand);
nand_cleanup(&meson_chip->nand);
list_del(&meson_chip->node);
}
--
2.34.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2022-05-20 16:42 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-20 16:41 Christophe JAILLET [this message]
2022-05-20 16:41 ` [PATCH] mtd: rawnand: meson: Fix a potential double free issue Christophe JAILLET
2022-05-20 16:41 ` Christophe JAILLET
2022-05-20 16:41 ` Christophe JAILLET
2022-05-26 5:34 ` Liang Yang
2022-05-26 5:34 ` Liang Yang
2022-05-26 5:34 ` Liang Yang
2022-05-26 5:34 ` Liang Yang
2022-06-09 12:44 ` Miquel Raynal
2022-06-09 12:44 ` Miquel Raynal
2022-06-09 12:44 ` Miquel Raynal
2022-06-09 12:44 ` Miquel Raynal
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=ec15c358b8063f7c50ff4cd628cf0d2e14e43f49.1653064877.git.christophe.jaillet@wanadoo.fr \
--to=christophe.jaillet@wanadoo.fr \
--cc=jbrunet@baylibre.com \
--cc=jianxin.pan@amlogic.com \
--cc=kernel-janitors@vger.kernel.org \
--cc=khilman@baylibre.com \
--cc=liang.yang@amlogic.com \
--cc=linux-amlogic@lists.infradead.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mtd@lists.infradead.org \
--cc=martin.blumenstingl@googlemail.com \
--cc=miquel.raynal@bootlin.com \
--cc=narmstrong@baylibre.com \
--cc=richard@nod.at \
--cc=vigneshr@ti.com \
--cc=yixun.lan@amlogic.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.