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

From: Mirsad Goran Todorovac <mirsad.todorovac@alu.unizg.hr>
To: Kuniyuki Iwashima <kuniyu@amazon.com>, mirsad.todorovac@alu.hr
Cc: davem@davemloft.net, edumazet@google.com, fw@strlen.de,
	kuba@kernel.org, kuniyu@amazon.co.jp,
	linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
	netdev@vger.kernel.org, pabeni@redhat.com, shuah@kernel.org
Subject: Re: [PATCH net v4] af_unix: selftest: Fix the size of the parameter to connect()
Date: Mon, 9 Jan 2023 09:53:42 +0100	[thread overview]
Message-ID: <00edc00c-7e44-3641-ded7-e9f908946514@alu.unizg.hr> (raw)
In-Reply-To: <20230109011512.15267-1-kuniyu@amazon.com>

On 9.1.2023. 2:15, Kuniyuki Iwashima wrote:
> From:   Mirsad Goran Todorovac <mirsad.todorovac@alu.hr>
> Date:   Sat, 7 Jan 2023 04:40:20 +0100 (CET)
>> From: Mirsad Goran Todorovac <mirsad.todorovac@alu.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@davemloft.net>
>> Cc: Eric Dumazet <edumazet@google.com>
>> Cc: Jakub Kicinski <kuba@kernel.org>
>> Cc: Paolo Abeni <pabeni@redhat.com>
>> Cc: Shuah Khan <shuah@kernel.org>
>> Cc: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
>> Cc: Florian Westphal <fw@strlen.de>
>> Reviewed-by: Florian Westphal <fw@strlen.de>
>> Fixes: 314001f0bf92 ("af_unix: Add OOB support")
>> Signed-off-by: Mirsad Goran Todorovac <mirsad.todorovac@alu.unizg.hr>
> 
> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.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
--
Sistem inženjer
Grafički fakultet | Akademija likovnih umjetnosti
Sveučilište u Zagrebu