linux-kernel - Re: [PATCH] net: devlink: Fix missing mutex

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Message-ID: <Yufl8sENNlOjsfwf@nanopsycho>
Date:   Mon, 1 Aug 2022 16:40:50 +0200
From:   Jiri Pirko <jiri@...nulli.us>
To:     Ammar Faizi <ammarfaizi2@...weeb.org>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        kernel test robot <lkp@...el.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Moshe Shemesh <moshe@...dia.com>, Jiri Pirko <jiri@...dia.com>,
        Fernanda Ma'rouf <fernandafmr12@...weeb.org>,
        netdev Mailing List <netdev@...r.kernel.org>,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        kbuild Mailing List <kbuild@...ts.01.org>,
        kbuild-all Mailing List <kbuild-all@...ts.01.org>
Subject: Re: [PATCH] net: devlink: Fix missing mutex_unlock() call

Mon, Aug 01, 2022 at 01:59:56PM CEST, ammarfaizi2@...weeb.org wrote:
>From: Ammar Faizi <ammarfaizi2@...weeb.org>
>
>Commit 2dec18ad826f forgets to call mutex_unlock() before the function
>returns in the error path:
>
>   New smatch warnings:
>   net/core/devlink.c:6392 devlink_nl_cmd_region_new() warn: inconsistent \
>   returns '&region->snapshot_lock'.
>
>Make sure we call mutex_unlock() in this error path.
>
>Reported-by: kernel test robot <lkp@...el.com>
>Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
>Fixes: 2dec18ad826f52658f7781ee995d236cc449b678 ("net: devlink: remove region snapshots list dependency on devlink->lock")
>Signed-off-by: Ammar Faizi <ammarfaizi2@...weeb.org>

Reviewed-by: Jiri Pirko <jiri@...dia.com>

Thanks for the fix!