Messages in this thread |  | | Date | Tue, 10 Dec 2013 14:32:18 +0100 | From | Vlastimil Babka <> | Subject | Re: BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:20 |
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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>
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