From: Yazen Ghannam <yazen.ghannam@amd.com>
To: Ammar Faizi <ammarfaizi2@gnuweeb.org>
Cc: Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Tony Luck <tony.luck@intel.com>,
linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org,
gwml@vger.gnuweeb.org, x86@kernel.org, stable@vger.kernel.org,
Alviro Iskandar Setiawan <alviro.iskandar@gmail.com>,
Jiri Hladky <hladky.jiri@googlemail.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Alviro Iskandar Setiawan <alviro.iskandar@gnuweeb.org>
Subject: Re: [PATCH v4 2/2] x86/mce/amd: Fix memory leak when `threshold_create_bank()` fails
Date: Wed, 9 Mar 2022 20:55:55 +0000 [thread overview]
Message-ID: <YikUW0i4hSh7t74c@yaz-ubuntu> (raw)
In-Reply-To: <b18bac61-a27f-8de5-8aa5-10bda9309ac5@gnuweeb.org>
On Mon, Mar 07, 2022 at 07:27:44AM +0700, Ammar Faizi wrote:
> On 3/3/22 9:32 AM, Ammar Faizi wrote:
> > It looks like this now. Yazen, Alviro, please review the
> > following patch. If you think it looks good, I will submit
> > it for the v5.
> >
> > From 91a447f837d502b7a040cd68f333fb98f4b941d9 Mon Sep 17 00:00:00 2001
> > From: Ammar Faizi <ammarfaizi2@gnuweeb.org>
> > Date: Thu, 3 Mar 2022 09:22:17 +0700
> > Subject: [PATCH v5 2/2] x86/MCE/AMD: Fix memory leak when `threshold_create_bank()` fails
> >
> > In mce_threshold_create_device(), if threshold_create_bank() fails, the
> > @bp will be leaked, because mce_threshold_remove_device() will not free
> > the @bp. It only frees the @bp when we've already written the @bp to
> > the @threshold_banks per-CPU variable, but at the point, we haven't.
> >
> > Fix this by extracting the cleanup part into a new static function
> > _mce_threshold_remove_device(), then use it from create/remove device
> > function. Also, eliminate the "goto out_err". Just early return inside
> > the loop if we fail.
> >
The commit message should use passive voice: no "I" or "we".
Otherwise, I think the patch looks good.
Thanks,
Yazen
next prev parent reply other threads:[~2022-03-09 20:56 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-01 9:46 [PATCH v4 0/2] Two x86 fixes Ammar Faizi
2022-03-01 9:46 ` [PATCH v4 1/2] x86/delay: Fix the wrong asm constraint in `delay_loop()` Ammar Faizi
2022-03-01 9:54 ` David Laight
2022-03-03 0:14 ` Ammar Faizi
2022-03-01 11:33 ` Alviro Iskandar Setiawan
2022-03-03 0:06 ` Ammar Faizi
2022-03-03 0:35 ` David Laight
2022-03-01 9:46 ` [PATCH v4 2/2] x86/mce/amd: Fix memory leak when `threshold_create_bank()` fails Ammar Faizi
2022-03-02 17:26 ` Yazen Ghannam
2022-03-02 23:20 ` Ammar Faizi
2022-03-02 23:27 ` Ammar Faizi
2022-03-03 1:58 ` Alviro Iskandar Setiawan
2022-03-03 2:07 ` Ammar Faizi
2022-03-03 2:32 ` Ammar Faizi
2022-03-03 2:51 ` Alviro Iskandar Setiawan
2022-03-07 0:27 ` Ammar Faizi
2022-03-09 20:55 ` Yazen Ghannam [this message]
2022-03-10 1:56 ` Ammar Faizi
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