linux-kernel - Re: [PATCH] scsi: qla2xxx: Fix double free of fcport in error handling path

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Message-ID: <443fb75b-948b-430f-be33-170e6f592280@web.de>
Date: Thu, 25 Apr 2024 13:31:02 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: Yongzhi Liu <hyperlyzcs@...il.com>,
 GR-QLogic-Storage-Upstream@...vell.com, linux-scsi@...r.kernel.org,
 kernel-janitors@...r.kernel.org,
 James Bottomley <James.Bottomley@...senPartnership.com>,
 "Martin K. Petersen" <martin.petersen@...cle.com>,
 Nilesh Javali <njavali@...vell.com>, Saurav Kashyap <skashyap@...vell.com>
Cc: LKML <linux-kernel@...r.kernel.org>,
 Himanshu Madhani <himanshu.madhani@...cle.com>, huntazhang@...cent.com,
 jitxie@...cent.com
Subject: Re: [PATCH] scsi: qla2xxx: Fix double free of fcport in error
 handling path

…
> Fix this by cleaning up the redundant qla2x00_free_fcport().
…

I suggest to avoid duplicate error handling code a bit more
also for the implementation of the function “qla24xx_els_dcmd_iocb”.
https://elixir.bootlin.com/linux/v6.9-rc5/source/drivers/scsi/qla2xxx/qla_iocb.c#L2751

See also:
https://wiki.sei.cmu.edu/confluence/display/c/MEM12-C.+Consider+using+a+goto+chain+when+leaving+a+function+on+error+when+using+and+releasing+resources

Regards,
Markus