From: Dirk Behme <dirk.behme@gmail.com>
To: Zefan Li <lizefan@huawei.com>
Cc: stable <stable@vger.kernel.org>
Subject: 3.4.106: futex: Wrong back port of 9e9aab5dbf?
Date: Sat, 08 Aug 2015 08:12:46 +0200 [thread overview]
Message-ID: <55C59DDE.5020908@gmail.com> (raw)
Hello,
from a private -stable review we think that the commit 9e9aab5dbf
("futex: Ensure get_futex_key_refs() always implies a barrier" [1]) is
not correctly back ported to 3.4.x:
The issue is that the memory barrier is introduced into
drop_futex_key_refs() function instead of get_futex_key_refs() function.
Additionally, we are unsure if the futex commits this commit is fixing
are really in < 3.4.106. I.e. we are unsure if this fix is needed at
all. Or at least if some additional futex commits are needed.
Do you like to check?
Best regards
Dirk
[1]
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=9e9aab5dbf6f13478cd996692ed9679af2404fc7
next reply other threads:[~2015-08-08 6:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-08 6:12 Dirk Behme [this message]
2015-09-07 8:43 ` 3.4.106: futex: Wrong back port of 9e9aab5dbf? Zefan Li
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