netdev - Re: [PATCH] fix inverted test in __skb_recv

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Message-ID: <87io4980c3.fsf@doppelsaurus.mobileactivedefense.com>
Date:	Tue, 08 Dec 2015 14:46:36 +0000
From:	Rainer Weikusat <rweikusat@...ileactivedefense.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fix inverted test in __skb_recv_datagram

David Miller <davem@...emloft.net> writes:
> From: Rainer Weikusat <rweikusat@...ileactivedefense.com>
> Date: Mon, 07 Dec 2015 23:30:58 +0000
>
>> As the kernel generally uses negated error numbers, *err needs to be
>> compared with -EAGAIN (d'oh).
>> 
>> Signed-off-by: Rainer Weikusat <rweikusat@...ileactivedefense.com>
>> Fixes: ea3793ee29d3
>
> Improperly formatted Fixes: tag, you must also include the commit
> header line, in parenthesis and double quotes, after the SHA_ID.
>
> Futhermore this is the wrong SHA_ID.

https://git.kernel.org/cgit/linux/kernel/git/davem/net-next.git/commit/?id=ea3793ee29d3

displays the commit I was referring to, namely, the one containing this

+ timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT);
+
+ do {
+ skb = __skb_try_recv_datagram(sk, flags, peeked, off, err,
+ &last);
+ if (skb)
+ return skb;
+
+ if (*err != EAGAIN)
+ break;
+ } while (timeo &&
+ !__skb_wait_for_more_packets(sk, err, &timeo, last));

which added the inverted test, IOW, if this is the wrong hash, I have no
idea what the right one could be. I'll resubmit this with the 'one line
summary' added. After noticing the issue around 23:10 UK time yesterday,
I was in a bit of a hurry and stopped reading the 'Fixes' text in
SubmittingPatches after the "with the first 12 characters".
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