From: Oleksij Rempel <linux@rempel-privat.de>
To: barebox@lists.infradead.org
Cc: Oleksij Rempel <linux@rempel-privat.de>
Subject: [PATCH v1 4/9] fs: fix possible null pointer dereference of base.
Date: Tue, 20 Nov 2018 21:07:09 +0100 [thread overview]
Message-ID: <20181120200714.3692-5-linux@rempel-privat.de> (raw)
In-Reply-To: <20181120200714.3692-1-linux@rempel-privat.de>
we use base before checking if it is NULL
Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
---
fs/fs.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/fs.c b/fs/fs.c
index 42fd63ad0..625ed10b7 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -1526,7 +1526,7 @@ static struct dentry *__lookup_hash(const struct qstr *name,
{
struct dentry *dentry;
struct dentry *old;
- struct inode *dir = base->d_inode;
+ struct inode *dir;
if (!base)
return ERR_PTR(-ENOENT);
@@ -1539,6 +1539,7 @@ static struct dentry *__lookup_hash(const struct qstr *name,
if (unlikely(!dentry))
return ERR_PTR(-ENOMEM);
+ dir = base->d_inode;
old = dir->i_op->lookup(dir, dentry, flags);
if (IS_ERR(old)) {
dput(dentry);
--
2.17.1
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next prev parent reply other threads:[~2018-11-20 20:07 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-20 20:07 [PATCH v1 0/9] random fixes Oleksij Rempel
2018-11-20 20:07 ` [PATCH v1 1/9] net: e1000: fix "Uninitialized variable: phy_data" warning Oleksij Rempel
2018-11-20 20:07 ` [PATCH v1 2/9] pinctrl: tegra30: fix "Possible null pointer dereference: group" warning Oleksij Rempel
2018-11-21 9:16 ` Lucas Stach
2018-11-21 9:40 ` Oleksij Rempel
2018-11-21 10:01 ` Lucas Stach
2018-11-20 20:07 ` [PATCH v1 3/9] fs: closedir: remove uninitialized variable ret Oleksij Rempel
2018-11-20 20:07 ` Oleksij Rempel [this message]
2018-11-20 20:07 ` [PATCH v1 5/9] mfd: da9063: fix wrong NULL pointer test Oleksij Rempel
2018-11-20 20:07 ` [PATCH v1 6/9] usb: at91_udc: remove useless NULL check Oleksij Rempel
2018-11-20 20:07 ` [PATCH v1 7/9] mtd: atmel_nand: remove erroneous case Oleksij Rempel
2018-11-20 20:07 ` [PATCH v1 8/9] usb: musb: fix possible out of bounds access Oleksij Rempel
2018-11-20 20:07 ` [PATCH v1 9/9] lib: lodepng: remove useless test Oleksij Rempel
2018-11-21 8:08 ` [PATCH v1 0/9] random fixes Sascha Hauer
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