From: Greg KH <gregkh@linuxfoundation.org>
To: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org, suzuki.poulose@arm.com
Subject: Re: [PATCH 1/1] coresight: Fix DEBUG_LOCKS_WARN_ON for uninitialized attribute
Date: Thu, 1 Aug 2019 20:50:45 +0200 [thread overview]
Message-ID: <20190801185045.GA31197@kroah.com> (raw)
In-Reply-To: <20190801172323.18359-2-mathieu.poirier@linaro.org>
On Thu, Aug 01, 2019 at 11:23:23AM -0600, Mathieu Poirier wrote:
> From: Suzuki K Poulose <suzuki.poulose@arm.com>
>
> While running the linux-next with CONFIG_DEBUG_LOCKS_ALLOC enabled,
> I get the following splat.
>
> BUG: key ffffcb5636929298 has not been registered!
> ------------[ cut here ]------------
> DEBUG_LOCKS_WARN_ON(1)
> WARNING: CPU: 1 PID: 53 at kernel/locking/lockdep.c:3669 lockdep_init_map+0x164/0x1f0
> CPU: 1 PID: 53 Comm: kworker/1:1 Tainted: G W 5.2.0-next-20190712-00015-g00ad4634222e-dirty #603
> Workqueue: events amba_deferred_retry_func
> pstate: 60c00005 (nZCv daif +PAN +UAO)
> pc : lockdep_init_map+0x164/0x1f0
> lr : lockdep_init_map+0x164/0x1f0
>
> [ trimmed ]
>
> Call trace:
> lockdep_init_map+0x164/0x1f0
> __kernfs_create_file+0x9c/0x158
> sysfs_add_file_mode_ns+0xa8/0x1d0
> sysfs_add_file_to_group+0x88/0xd8
> etm_perf_add_symlink_sink+0xcc/0x138
> coresight_register+0x110/0x280
> tmc_probe+0x160/0x420
>
> [ trimmed ]
>
> ---[ end trace ab4cc669615ba1b0 ]---
>
> Fix this by initialising the dynamically allocated attribute properly.
>
> Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
> Fixes: bb8e370bdc141ddf ("coresight: perf: Add "sinks" group to PMU directory")
That should be:
Fixes: bb8e370bdc14 ("coresight: perf: Add "sinks" group to PMU directory")
I can go fix it up...
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next prev parent reply other threads:[~2019-08-01 18:50 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-01 17:23 [PATCH 0/1] coresight: Fix for v5.3-rc3 Mathieu Poirier
2019-08-01 17:23 ` [PATCH 1/1] coresight: Fix DEBUG_LOCKS_WARN_ON for uninitialized attribute Mathieu Poirier
2019-08-01 18:50 ` Greg KH [this message]
2019-08-01 20:20 ` Mathieu Poirier
2019-08-01 20:26 ` Greg KH
2019-08-01 18:17 ` [PATCH 0/1] coresight: Fix for v5.3-rc3 Greg KH
2019-08-01 20:16 ` Mathieu Poirier
2019-08-02 9:10 ` Greg KH
2019-08-04 13:26 ` Mathieu Poirier
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