linux-kernel - Re: [PATCH v2 drm-dp 04/10] drm/hisilicon/hibmc: fix the hibmc loaded failed bug

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <hpqbr2xngohjb2kyauwz5gctb7dglvu5tsmapbazy5hbjtho2v@lmkptdfeej7z>
Date: Sat, 28 Jun 2025 20:02:51 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Yongbang Shi <shiyongbang@...wei.com>
Cc: xinliang.liu@...aro.org, tiantao6@...ilicon.com,
        maarten.lankhorst@...ux.intel.com, mripard@...nel.org,
        tzimmermann@...e.de, airlied@...il.com, daniel@...ll.ch,
        kong.kongxinwei@...ilicon.com, liangjian010@...wei.com,
        chenjianmin@...wei.com, lidongming5@...wei.com, libaihan@...wei.com,
        shenjian15@...wei.com, shaojijie@...wei.com,
        jani.nikula@...ux.intel.com, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 drm-dp 04/10] drm/hisilicon/hibmc: fix the hibmc
 loaded failed bug

On Fri, Jun 20, 2025 at 05:30:58PM +0800, Yongbang Shi wrote:
> From: Baihan Li <libaihan@...wei.com>
> 
> When hibmc loaded failed, the driver use hibmc_unload to free the
> resource, but the mutexes in mode.config are not init, which will
> access an NULL pointer. Just change goto statement to return, because
> hibnc_hw_init() doesn't need to free anything.
> 
> Fixes: b3df5e65cc03 ("drm/hibmc: Drop drm_vblank_cleanup")
> Signed-off-by: Baihan Li <libaihan@...wei.com>
> Signed-off-by: Yongbang Shi <shiyongbang@...wei.com>
> ---
>  drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>


-- 
With best wishes
Dmitry