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Message-ID: <8ee716c797a547165132c179c1909404@codeaurora.org>
Date: Wed, 13 May 2020 14:22:58 -0700
From: Rajkumar Manoharan <rmanohar@...eaurora.org>
To: Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc: kvalo@...eaurora.org, davem@...emloft.net, pradeepc@...eaurora.org,
ath11k@...ts.infradead.org, linux-wireless@...r.kernel.org,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
kernel-janitors@...r.kernel.org,
linux-wireless-owner@...r.kernel.org
Subject: Re: [PATCH] ath11k: Fix some resource leaks in error path in
'ath11k_thermal_register()'
On 2020-05-13 13:14, Christophe JAILLET wrote:
> If 'thermal_cooling_device_register()' fails, we must undo what has
> been
> allocated so far. So we must go to 'err_thermal_destroy' instead of
> returning directly
>
> In case of error in 'ath11k_thermal_register()', the previous
> 'thermal_cooling_device_register()' call must also be undone. Move the
> 'ar->thermal.cdev = cdev' a few lines above in order for this to be
> done
> in 'ath11k_thermal_unregister()' which is called in the error handling
> path.
>
> Fixes: 2a63bbca06b2 ("ath11k: add thermal cooling device support")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> ---
> I'm not 100% confident with this patch.
>
> - When calling 'ath11k_thermal_unregister()', we try to release some
> resources that have not been allocated yet. I don't know if it can be
> an
> issue or not.
> - I think that we should propagate the error code, instead of forcing
> -EINVAL.
>
Good catch.
-Rajkumar
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