linux-kernel - Re: 4.9.0 regression in pipe-backed iov

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Message-ID: <20170115005302.GA1555@ZenIV.linux.org.uk>
Date:   Sun, 15 Jan 2017 00:53:03 +0000
From:   Al Viro <viro@...IV.linux.org.uk>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     "Alan J. Wylie" <alan@...ie.me.uk>,
        Thorsten Leemhuis <regressions@...mhuis.info>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: 4.9.0 regression in pipe-backed iov_iter with systemd-nspawn

On Sat, Jan 14, 2017 at 01:57:57AM +0000, Al Viro wrote:

> OK.  Let's wait for Alan to confirm that the last variant works and
> I'll send a pull request (with Cc: stable # v4.9).

... and here it is.

The following changes since commit b4b8664d291ac1998e0f0bcdc96b6397f0fe68b3:

  arm64: don't pull uaccess.h into *.S (2016-12-26 13:05:17 -0500)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git for-linus

for you to fetch changes up to b9dc6f65bc5e232d1c05fe34b5daadc7e8bbf1fb:

  fix a fencepost error in pipe_advance() (2017-01-14 19:50:41 -0500)

----------------------------------------------------------------
Al Viro (1):
      fix a fencepost error in pipe_advance()

Dave Kleikamp (1):
      coredump: Ensure proper size of sparse core files

Gu Zheng (1):
      tmpfs: clear S_ISGID when setting posix ACLs

Shaohua Li (1):
      aio: fix lock dep warning

 fs/aio.c                 |  6 ++++--
 fs/binfmt_elf.c          |  1 +
 fs/coredump.c            | 18 ++++++++++++++++
 fs/posix_acl.c           |  9 ++++----
 include/linux/coredump.h |  1 +
 lib/iov_iter.c           | 54 +++++++++++++++++++++++++++---------------------
 6 files changed, 59 insertions(+), 30 deletions(-)