netdev - Re: [PATCH net v4] af_unix: selftest: Fix the size of the parameter to connect()

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Date:   Mon, 9 Jan 2023 09:53:42 +0100
From:   Mirsad Goran Todorovac <mirsad.todorovac@....unizg.hr>
To:     Kuniyuki Iwashima <kuniyu@...zon.com>, mirsad.todorovac@....hr
Cc:     davem@...emloft.net, edumazet@...gle.com, fw@...len.de,
        kuba@...nel.org, kuniyu@...zon.co.jp, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, netdev@...r.kernel.org,
        pabeni@...hat.com, shuah@...nel.org
Subject: Re: [PATCH net v4] af_unix: selftest: Fix the size of the parameter
 to connect()

On 9.1.2023. 2:15, Kuniyuki Iwashima wrote:
> From:   Mirsad Goran Todorovac <mirsad.todorovac@....hr>
> Date:   Sat, 7 Jan 2023 04:40:20 +0100 (CET)
>> From: Mirsad Goran Todorovac <mirsad.todorovac@....unizg.hr>
>>
>> Adjust size parameter in connect() to match the type of the parameter, to
>> fix "No such file or directory" error in selftests/net/af_unix/
>> test_oob_unix.c:127.
>>
>> The existing code happens to work provided that the autogenerated pathname
>> is shorter than sizeof (struct sockaddr), which is why it hasn't been
>> noticed earlier.
>>
>> Visible from the trace excerpt:
>>
>> bind(3, {sa_family=AF_UNIX, sun_path="unix_oob_453059"}, 110) = 0
>> clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7fa6a6577a10) = 453060
>> [pid <child>] connect(6, {sa_family=AF_UNIX, sun_path="unix_oob_45305"}, 16) = -1 ENOENT (No such file or directory)
>>
>> BUG: The filename is trimmed to sizeof (struct sockaddr).
>>
>> Cc: "David S. Miller" <davem@...emloft.net>
>> Cc: Eric Dumazet <edumazet@...gle.com>
>> Cc: Jakub Kicinski <kuba@...nel.org>
>> Cc: Paolo Abeni <pabeni@...hat.com>
>> Cc: Shuah Khan <shuah@...nel.org>
>> Cc: Kuniyuki Iwashima <kuniyu@...zon.co.jp>
>> Cc: Florian Westphal <fw@...len.de>
>> Reviewed-by: Florian Westphal <fw@...len.de>
>> Fixes: 314001f0bf92 ("af_unix: Add OOB support")
>> Signed-off-by: Mirsad Goran Todorovac <mirsad.todorovac@....unizg.hr>
> 
> Reviewed-by: Kuniyuki Iwashima <kuniyu@...zon.com>
> 
> You can check the current status here.
> https://patchwork.kernel.org/project/netdevbpf/patch/alpine.DEB.2.21.2301070437400.26826@domac.alu.hr/

Thank you very much for your time on this, Koniyuki, Jakub.

> PS: you may want to check config not to send a mail as multipart next time.

Done! Thanks for the hint. This should work:

   [ Sending Preferences ]
       [X]  Do Not Generate Sender Header
       [ ]  Use Sender Instead of X-X-Sender
       [X]  Do Not Send Flowed Text
       [X]  Downgrade Multipart to Text

Maybe add this to Documentation/process/email-clients.rst, section 
Alpine? It could save some round-trips ...

Thanks,
Mirsad

-- 
Mirsad Todorovac
System engineer
Faculty of Graphic Arts | Academy of Fine Arts
University of Zagreb
Republic of Croatia, the European Union
--
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Grafički fakultet | Akademija likovnih umjetnosti
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