lkml.org 
[lkml]   [2013]   [Dec]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:20
On 12/05/2013 11:50 PM, Tejun Heo wrote:
> 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 = {

I've had the same problem with linux-next-20131209 and this patch fixed
it. Feel free to add if appropriate:

Tested-by: Vlastimil Babka <vbabka@suse.cz>

> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>



\
 
 \ /
  Last update: 2013-12-10 15:01    [W:0.570 / U:0.084 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site