This is a note to let you know that I've just added the patch titled
ipmi: kcs_bmc: Fix a memory leak in the error handling path of 'kcs_bmc_serio_add_device()'
to the 5.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ipmi-kcs_bmc-fix-a-memory-leak-in-the-error-handling.patch
and it can be found in the queue-5.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit fa1082d72a5f300bcf96b830dc04ef2c3b1a19dc
Author: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Date: Tue Sep 7 23:06:32 2021 +0200
ipmi: kcs_bmc: Fix a memory leak in the error handling path of 'kcs_bmc_serio_add_device()'
[ Upstream commit f281d010b87454e72475b668ad66e34961f744e0 ]
In the unlikely event where 'devm_kzalloc()' fails and 'kzalloc()'
succeeds, 'port' would be leaking.
Test each allocation separately to avoid the leak.
Fixes: 3a3d2f6a4c64 ("ipmi: kcs_bmc: Add serio adaptor")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Message-Id: <ecbfa15e94e64f4b878ecab1541ea46c74807670.1631048724.git.christophe.jaillet@xxxxxxxxxx>
Reviewed-by: Andrew Jeffery <andrew@xxxxxxxx>
Signed-off-by: Corey Minyard <cminyard@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/char/ipmi/kcs_bmc_serio.c b/drivers/char/ipmi/kcs_bmc_serio.c
index 7948cabde50b4..7e2067628a6ce 100644
--- a/drivers/char/ipmi/kcs_bmc_serio.c
+++ b/drivers/char/ipmi/kcs_bmc_serio.c
@@ -73,10 +73,12 @@ static int kcs_bmc_serio_add_device(struct kcs_bmc_device *kcs_bmc)
struct serio *port;
priv = devm_kzalloc(kcs_bmc->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
/* Use kzalloc() as the allocation is cleaned up with kfree() via serio_unregister_port() */
port = kzalloc(sizeof(*port), GFP_KERNEL);
- if (!(priv && port))
+ if (!port)
return -ENOMEM;
port->id.type = SERIO_8042;
