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.
Cc: Borislav Petkov bp@alien8.de Cc: Thomas Gleixner tglx@linutronix.de Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Cc: stable@vger.kernel.org # v5.8+ Fixes: 6458de97fc15 ("x86/mce/amd: Straighten CPU hotplug path") Co-authored-by: Alviro Iskandar Setiawan alviro.iskandar@gnuweeb.org Signed-off-by: Alviro Iskandar Setiawan alviro.iskandar@gnuweeb.org Co-authored-by: Yazen Ghannam yazen.ghannam@amd.com Signed-off-by: Yazen Ghannam yazen.ghannam@amd.com Signed-off-by: Ammar Faizi ammarfaizi2@gnuweeb.org
Hi,
It's Monday morning...
Friendly ping for Yazen from AMD. What do you think of this patch? If it looks good, I will submit it for the v5 revision. See the ref below if you lost track of the full message.
Ref: https://lore.kernel.org/lkml/9dfe087a-f941-1bc4-657d-7e7c198888ff@gnuweeb.or...
Thanks!