Messages in this thread | | | Date | Wed, 29 Jan 2014 13:22:47 -0500 | From | Tejun Heo <> | Subject | Re: kernfs: lockdep complains about kernfs_addrm_ctx |
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Hello, Jiri.
On Wed, Jan 22, 2014 at 03:01:38PM +0100, Jiri Kosina wrote: > booting with current Linus' tree (df32e43a5) gives me this: > > INFO: trying to register non-static key. > the code is fine but needs lockdep annotation. > turning off the locking correctness validator. > CPU: 1 PID: 105 Comm: udevd Not tainted 3.13.0-03477-gdf32e43 #1 > Hardware name: LENOVO 7470BN2/7470BN2, BIOS 6DET38WW (2.02 ) 12/19/2008 > 0000000000000000 ffff880037ad3468 ffffffff8159701b ffff880037ad34e8 > ffffffff8109e317 0000000000000000 ffff880037ad4fd0 ffff880037ad34e8 > 0000000000000000 ffff880037ad34b8 ffffffff00000000 0000000000000002 > Call Trace: > [<ffffffff8159701b>] dump_stack+0x72/0x87 > [<ffffffff8109e317>] register_lock_class+0x497/0x4c0 > [<ffffffff810a1c2d>] __lock_acquire+0x7d/0x600 > [<ffffffff810a0cdd>] ? trace_hardirqs_on_caller+0x13d/0x1e0 > [<ffffffff810a22a1>] lock_acquire+0xf1/0x120 > [<ffffffff81215460>] ? kernfs_addrm_finish+0x30/0x50 > [<ffffffff81214cf9>] kernfs_deactivate+0xe9/0x130 ... > > I have started to look into the kernfs code now to debug this, but as I > haven't been following it closely during the review phase, it might take > some time before I familiarize myself with it; hence sending this as a > heads-up.
Oops, this got reported again and the fix patch has been posted earlier today.
http://lkml.kernel.org/g/<20140129170403.GJ30842@htj.dyndns.org>
Can you please see whether the above patch fixes the issue?
Thanks.
-- tejun
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