linux-kernel - Re: powerpc/perf/24x7: Fix lockdep warning

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Message-Id: <20150708105409.131F7140B0D@ozlabs.org>
Date:	Wed,  8 Jul 2015 20:54:08 +1000 (AEST)
From:	Michael Ellerman <mpe@...erman.id.au>
To:	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
Cc:	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	gustavold@...ux.vnet.ibm.com
Subject: Re: powerpc/perf/24x7: Fix lockdep warning

On Tue, 2015-07-07 at 19:37:25 UTC, Sukadev Bhattiprolu wrote:
> >From 370152d9427e57cd9632b00189f71099f8e85544 Mon Sep 17 00:00:00 2001
> From: Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
> Date: Tue, 7 Jul 2015 12:21:10 -0400
> Subject: [PATCH 1/1] powerpc/perf/24x7: Fix lockdep warning
> 
> The sysfs attributes for the 24x7 counters are dynamically allocated.
> Initialize the attributes using sysfs_attr_init() to fix following
> warning which occurs when CONFIG_DEBUG_LOCK_VMALLOC=y.
> 
> [    0.346249] audit: initializing netlink subsys (disabled)
> [    0.346284] audit: type=2000 audit(1436295254.340:1): initialized
> [    0.346489] BUG: key c0000000efe90198 not in .data!
> [    0.346491] DEBUG_LOCKS_WARN_ON(1)
> [    0.346502] ------------[ cut here ]------------
> [    0.346504] WARNING: at ../kernel/locking/lockdep.c:3002
> [    0.346506] Modules linked in:
> 
> Reported-by: Gustavo Luiz Duarte <gustavold@...ux.vnet.ibm.com>
> Signed-off-by: Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
> Tested-by: Gustavo Luiz Duarte <gustavold@...ux.vnet.ibm.com>

Applied to powerpc fixes, thanks.

https://git.kernel.org/cgit/linux/kernel/git/powerpc/linux.git/commit/?h=fixes&id=442053e57a4fc58b719b6ceab60f29ef9cf4404c

cheers
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