From: Tejun Heo <htejun@gmail.com>
To: ebiederm@xmission.com, cornelia.huck@de.ibm.com, greg@kroah.com,
linux-kernel@vger.kernel.org, satyam@infradead.org,
stern@rowland.harvard.edu, containers@lists.osdl.org
Cc: Tejun Heo <htejun@gmail.com>
Subject: [PATCH 01/14] sysfs: fix i_mutex locking in sysfs_get_dentry()
Date: Mon, 20 Aug 2007 21:36:29 +0900 [thread overview]
Message-ID: <11876133893733-git-send-email-htejun@gmail.com> (raw)
In-Reply-To: <11876133893720-git-send-email-htejun@gmail.com>
lookup_one_len_kern() should be called with the parent's i_mutex
locked. Fix it.
Spotted by Eric W. Biederman.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
---
fs/sysfs/dir.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index e4fd8a2..b33af5e 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -130,8 +130,10 @@ struct dentry *sysfs_get_dentry(struct sysfs_dirent *sd)
/* look it up */
parent_dentry = dentry;
+ mutex_lock(&parent_dentry->d_inode->i_mutex);
dentry = lookup_one_len_kern(cur->s_name, parent_dentry,
strlen(cur->s_name));
+ mutex_unlock(&parent_dentry->d_inode->i_mutex);
dput(parent_dentry);
if (IS_ERR(dentry)) {
--
1.5.0.3
WARNING: multiple messages have this Message-ID (diff)
From: Tejun Heo <htejun@gmail.com>
To: ebiederm@xmission.com, cornelia.huck@de.ibm.com, greg@kroah.com,
linux-kernel@vger.kernel.org, satyam@infradead.org,
stern@rowland.harvard.edu, containers@lists.osdl.org,
htejun@gmail.com
Cc: Tejun Heo <htejun@gmail.com>
Subject: [PATCH 01/14] sysfs: fix i_mutex locking in sysfs_get_dentry()
Date: Mon, 20 Aug 2007 21:36:29 +0900 [thread overview]
Message-ID: <11876133893733-git-send-email-htejun@gmail.com> (raw)
In-Reply-To: <11876133893720-git-send-email-htejun@gmail.com>
lookup_one_len_kern() should be called with the parent's i_mutex
locked. Fix it.
Spotted by Eric W. Biederman.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
---
fs/sysfs/dir.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index e4fd8a2..b33af5e 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -130,8 +130,10 @@ struct dentry *sysfs_get_dentry(struct sysfs_dirent *sd)
/* look it up */
parent_dentry = dentry;
+ mutex_lock(&parent_dentry->d_inode->i_mutex);
dentry = lookup_one_len_kern(cur->s_name, parent_dentry,
strlen(cur->s_name));
+ mutex_unlock(&parent_dentry->d_inode->i_mutex);
dput(parent_dentry);
if (IS_ERR(dentry)) {
--
1.5.0.3
next prev parent reply other threads:[~2007-08-20 12:36 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-20 12:36 [PATCHSET] Sysfs cleanups from Eric W. Biederman Tejun Heo
2007-08-20 12:36 ` Tejun Heo [this message]
2007-08-20 12:36 ` [PATCH 01/14] sysfs: fix i_mutex locking in sysfs_get_dentry() Tejun Heo
2007-08-20 12:36 ` [PATCH 10/14] sysfs: simply sysfs_get_dentry Tejun Heo
2007-08-20 12:36 ` Tejun Heo
[not found] ` <11876133893720-git-send-email-htejun-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2007-08-20 12:36 ` [PATCH 04/14] sysfs: Use kill_anon_super Tejun Heo
2007-08-20 12:36 ` [PATCH 02/14] sysfs: Move all of inode initialization into sysfs_init_inode Tejun Heo
2007-08-20 12:36 ` [PATCH 03/14] sysfs: Remove sysfs_instantiate Tejun Heo
2007-08-20 12:36 ` [PATCH 11/14] sysfs: Remove s_dentry Tejun Heo
2007-08-20 12:36 ` [PATCH 07/14] sysfs: Simplify readdir Tejun Heo
2007-08-20 12:36 ` [PATCH 05/14] sysfs: Make sysfs_mount static Tejun Heo
2007-08-20 12:36 ` [PATCH 09/14] sysfs: Introduce sysfs_rename_mutex Tejun Heo
2007-08-20 12:36 ` [PATCH 06/14] sysfs: In sysfs_lookup don't open code sysfs_find_dirent Tejun Heo
2007-08-20 12:36 ` [PATCH 08/14] sysfs: Rewrite sysfs_drop_dentry Tejun Heo
2007-08-20 12:36 ` [PATCH 12/14] sysfs: kill SYSFS_FLAG_REMOVED Tejun Heo
2007-08-20 12:36 ` Tejun Heo
2007-08-20 12:36 ` [PATCH 13/14] sysfs: Rewrite rename in terms of sysfs dirents Tejun Heo
2007-08-20 12:36 ` [PATCH 14/14] sysfs: Rewrite sysfs_move_dir " Tejun Heo
2007-08-22 14:04 ` [PATCHSET] Sysfs cleanups from Eric W. Biederman Eric W. Biederman
2007-08-22 14:04 ` Eric W. Biederman
2007-08-22 14:45 ` Tejun Heo
2007-08-22 15:51 ` Eric W. Biederman
2007-08-22 9:26 ` Cornelia Huck
2007-08-22 9:39 ` Tejun Heo
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