linux-kernel - Re: platform/chrome: cros_ec_i2c: Less function calls in cros_ec_cmd_xfer

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date: Wed, 3 Jan 2024 08:56:50 +0100
From: Markus Elfring <Markus.Elfring@....de>
To: Tzung-Bi Shih <tzungbi@...nel.org>, chrome-platform@...ts.linux.dev,
 kernel-janitors@...r.kernel.org
Cc: Benson Leung <bleung@...omium.org>, Günter Röck
 <groeck@...omium.org>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: platform/chrome: cros_ec_i2c: Less function calls in
 cros_ec_cmd_xfer_i2c() after error detection

>> The kfree() function was called in up to two cases by
>> the cros_ec_cmd_xfer_i2c() function during error handling
>> even if the passed variable contained a null pointer.
>> This issue was detected by using the Coccinelle software.
>>
>> * Adjust jump targets.
>>
>> * Delete two initialisations which became unnecessary
>>   with this refactoring.
>
> The patch saves few instructions but makes the code less readable a bit.

Do you find advices applicable from another information source
also for this function implementation?
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