linux-kernel - Re: [PATCH v2] drm/vc4: Fix resource leak in 'vc4_get_hang_state

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Message-ID: <87a85cycb8.fsf@eliezer.anholt.net>
Date:   Mon, 12 Jun 2017 17:13:31 -0700
From:   Eric Anholt <eric@...olt.net>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        airlied@...ux.ie
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: Re: [PATCH v2] drm/vc4: Fix resource leak in 'vc4_get_hang_state_ioctl()' in error handling path

Christophe JAILLET <christophe.jaillet@...adoo.fr> writes:

> If one 'drm_gem_handle_create()' fails, we leak somes handles and some
> memory.
>
> In order to fix it:
>   - move the 'free(bo_state)' at the end of the function so that it is also
>     called in the eror handling path. This has the side effect to also try 
>     to free it if the first 'kcalloc' fails. This is harmless.
>   - add a new label, err_delete_handle, in order to delete already
>     allocated handles in error handling path
>   - remove the now useless 'err' label

Reviewed and applied.  Thanks!

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