linux-kernel - Re: [PATCH] net: netlink: fix error return code of netlink_proto

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Message-ID: <fb1e13d8-6b7e-ca47-2f65-930dfdb651dc@gmail.com>
Date:   Tue, 9 Mar 2021 16:55:34 +0800
From:   Jia-Ju Bai <baijiaju1990@...il.com>
To:     Heiner Kallweit <hkallweit1@...il.com>, davem@...emloft.net,
        kuba@...nel.org, ast@...nel.org, daniel@...earbox.net,
        andrii@...nel.org, kafai@...com, songliubraving@...com, yhs@...com,
        john.fastabend@...il.com, kpsingh@...nel.org,
        marcelo.leitner@...il.com, mkubecek@...e.cz, jbi.octave@...il.com,
        yangyingliang@...wei.com, 0x7f454c46@...il.com,
        rdunlap@...radead.org
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        bpf@...r.kernel.org
Subject: Re: [PATCH] net: netlink: fix error return code of
 netlink_proto_init()



On 2021/3/9 16:47, Heiner Kallweit wrote:
> On 09.03.2021 09:33, Jia-Ju Bai wrote:
>> When kcalloc() returns NULL to nl_table, no error return code of
>> netlink_proto_init() is assigned.
>> To fix this bug, err is assigned with -ENOMEM in this case.
>>
> Didn't we talk enough about your incorrect patches yesterday?
> This one is incorrect again. panic() never returns.
> Stop sending patches until you understand the code you're changing!

Ah, sorry, I was too confident about this bug report...
Thanks for your reply.
Following your advice, now I am sending the patches only for the bug 
reports that I am confident about after careful code review.
Some of the patches have been applied, but some of them are still wrong, 
like this patch...
I am sorry for the false positives...


Best wishes,
Jia-Ju Bai