linux-kernel - Re: Linux 2.6.24-rc7: sparc64: WARNING: at kernel/lockdep_proc.c:267 lockdep_stats

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Message-Id: <20080108.145038.203528847.davem@davemloft.net>
Date:	Tue, 08 Jan 2008 14:50:38 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	m.kozlowski@...land.pl
Cc:	torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org,
	sparclinux@...r.kernel.org
Subject: Re: Linux 2.6.24-rc7: sparc64: WARNING: at
 kernel/lockdep_proc.c:267 lockdep_stats_show()

From: Mariusz Kozlowski <m.kozlowski@...land.pl>
Date: Tue, 8 Jan 2008 19:42:16 +0100

> Hello,
> 
> 	Got this when doing usual looping over /proc entries on fresh test kernel:
> 
> WARNING: at kernel/lockdep_proc.c:267 lockdep_stats_show()
> Call Trace:
>  [0000000000492704] lockdep_stats_show+0x6ac/0x6c0
>  [00000000004eb4b4] seq_read+0x5c/0x340
>  [000000000050b2bc] proc_reg_read+0x64/0xa0
>  [00000000004cd72c] vfs_read+0x74/0x120
>  [00000000004cdb4c] sys_read+0x34/0x60
>  [00000000004062d4] linux_sparc_syscall32+0x3c/0x40
>  [0000000000012ff4] 0x12ffc

Please turn off lockdep on sparc64, currently it not
reliable.  I have many things to audit, including how
the stack frames are presented to the lockdep layer.

So any problem you run into can be due to issues like
that.
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