From: Tejun Heo <tj@kernel.org>
To: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-kernel@vger.kernel.org
Subject: Re: BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:20
Date: Thu, 5 Dec 2013 17:50:19 -0500 [thread overview]
Message-ID: <20131205225019.GA32005@mtj.dyndns.org> (raw)
In-Reply-To: <20131205031051.GC5135@yliu-dev.sh.intel.com>
On Thu, Dec 05, 2013 at 11:10:51AM +0800, Yuanhan Liu wrote:
> Greetings,
>
> I got the below dmesg and the first bad commit is
>
> commit 4b93dc9b1c684d0587fe44d36bbfdf45bd3bea9d
> Author: Tejun Heo <tj@kernel.org>
> AuthorDate: Thu Nov 28 14:54:43 2013 -0500
> Commit: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> CommitDate: Fri Nov 29 18:16:08 2013 -0800
>
> sysfs, kernfs: prepare mount path for kernfs
Oops, can you please try the following patch?
Thanks.
diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
index e7e3aa8..8d07527 100644
--- a/fs/sysfs/mount.c
+++ b/fs/sysfs/mount.c
@@ -45,8 +45,10 @@ static struct dentry *sysfs_mount(struct file_system_type *fs_type,
static void sysfs_kill_sb(struct super_block *sb)
{
+ void *ns = (void *)kernfs_super_ns(sb);
+
kernfs_kill_sb(sb);
- kobj_ns_drop(KOBJ_NS_TYPE_NET, (void *)kernfs_super_ns(sb));
+ kobj_ns_drop(KOBJ_NS_TYPE_NET, ns);
}
static struct file_system_type sysfs_fs_type = {
next prev parent reply other threads:[~2013-12-05 22:50 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-05 3:10 BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:20 Yuanhan Liu
2013-12-05 22:50 ` Tejun Heo [this message]
2013-12-09 14:56 ` Yuanhan Liu
2013-12-10 15:22 ` [PATCH driver-core-next] sysfs: fix use-after-free in sysfs_kill_sb() Tejun Heo
2013-12-10 13:32 ` BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:20 Vlastimil Babka
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=20131205225019.GA32005@mtj.dyndns.org \
--to=tj@kernel.org \
--cc=fengguang.wu@intel.com \
--cc=gregkh@linuxfoundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=yuanhan.liu@linux.intel.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox