linux-kernel - Re: [REPORT] BUG: spinlock recursion on CPU#0, init/1

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Date:	Thu, 20 Jan 2011 10:58:19 +1100
From:	Nick Piggin <npiggin@...il.com>
To:	maciej.rutecki@...il.com
Cc:	Santosh Shilimkar <santosh.shilimkar@...com>,
	linux-kernel@...r.kernel.org
Subject: Re: [REPORT] BUG: spinlock recursion on CPU#0, init/1

Yeah this should be fixed as of about a week ago, sorry for
not replying earlier.

Thanks for reporting and please let us know if you have any
further problems.

On Wed, Jan 19, 2011 at 3:19 AM, Maciej Rutecki
<maciej.rutecki@...il.com> wrote:
> I created a Bugzilla entry at
> https://bugzilla.kernel.org/show_bug.cgi?id=27022
> for your bug report, please add your address to the CC list in there, thanks!
>
> On poniedziałek, 10 stycznia 2011 o 16:21:59 Santosh Shilimkar wrote:
>> On latest mainline commit I seeing a regression when rootfs
>> is mounted on NFS. Not sure if it's already known regression.
>>
>> Anybody is aware of this one ?
>>
>> --------------------------------------
>> Uncompressing Linux... done, booting the kernel.
>> Linux version 2.6.37-03766-g0390214 (a0393909@...93909-desktop) (gcc
>> version 4.4.1 (Sourcery G++ Lite 2010q1-202) ) #44 SMP Mon Jan 10 20:41:27
>> IST 2011
>>
>> [....]
>>
>> VFS: Mounted root (nfs filesystem) on device 0:13.
>> Freeing init memory: 296K
>> BUG: spinlock recursion on CPU#0, init/1
>>  lock: ef5a1e0c, .magic: dead4ead, .owner: init/1, .owner_cpu: 0
>> [<c0063290>] (unwind_backtrace+0x0/0xe4) from [<c024ce90>]
>> (do_raw_spin_lock+0x48/0x158)
>> [<c024ce90>] (do_raw_spin_lock+0x48/0x158) from [<c012f4e0>]
>> (nameidata_dentry_drop_rcu+0x84/0x17c)
>> [<c012f4e0>] (nameidata_dentry_drop_rcu+0x84/0x17c) from [<c012f608>]
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