From: David Miller <davem@davemloft.net>
To: shannon.nelson@oracle.com
Cc: netdev@vger.kernel.org, sparclinux@vger.kernel.org,
linux-kernel@vger.kernel.org, eric.dumazet@gmail.com,
rob.gardner@oracle.com
Subject: Re: [PATCH v2] tcp: fix tcp_fastopen unaligned access complaints on sparc
Date: Fri, 13 Jan 2017 12:31:53 -0500 (EST) [thread overview]
Message-ID: <20170113.123153.1102439896232313596.davem@davemloft.net> (raw)
In-Reply-To: <1484259898-30719-1-git-send-email-shannon.nelson@oracle.com>
From: Shannon Nelson <shannon.nelson@oracle.com>
Date: Thu, 12 Jan 2017 14:24:58 -0800
> Fix up a data alignment issue on sparc by swapping the order
> of the cookie byte array field with the length field in
> struct tcp_fastopen_cookie, and making it a proper union
> to clean up the typecasting.
>
> This addresses log complaints like these:
> log_unaligned: 113 callbacks suppressed
> Kernel unaligned access at TPC[976490] tcp_try_fastopen+0x2d0/0x360
> Kernel unaligned access at TPC[9764ac] tcp_try_fastopen+0x2ec/0x360
> Kernel unaligned access at TPC[9764c8] tcp_try_fastopen+0x308/0x360
> Kernel unaligned access at TPC[9764e4] tcp_try_fastopen+0x324/0x360
> Kernel unaligned access at TPC[976490] tcp_try_fastopen+0x2d0/0x360
>
> Cc: Eric Dumazet <eric.dumazet@gmail.com>
> Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
> ---
> v2: Use Eric's suggestion for a union in the struct
Applied and queued up for -stable, thanks.
prev parent reply other threads:[~2017-01-13 17:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-12 22:24 [PATCH v2] tcp: fix tcp_fastopen unaligned access complaints on sparc Shannon Nelson
2017-01-12 22:49 ` Eric Dumazet
2017-01-13 17:31 ` David Miller [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170113.123153.1102439896232313596.davem@davemloft.net \
--to=davem@davemloft.net \
--cc=eric.dumazet@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=rob.gardner@oracle.com \
--cc=shannon.nelson@oracle.com \
--cc=sparclinux@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox