On Fri, May 18, 2018 at 10:18:42AM +0900, Daniel Sangorrin wrote:

Oops sorry, I failed to write the subject. It should been something like the subject of this e-mail.

...

-----Original Message----- From: stable-owner@vger.kernel.org [mailto:stable-owner@vger.kernel.org] On Behalf Of Daniel Sangorrin Sent: Friday, May 18, 2018 9:59 AM To: stable@vger.kernel.org Cc: mtk.manpages@gmail.com; viro@zeniv.linux.org.uk Subject:

Hello Greg,

After running LTP with Fuego on the LTS kernel 4.4.y, there were a few test cases failing that I thought needed some investigation.

I reviewed the first one (fcntl35 and fcntl35_64) so far. According to the comments on LTP's fcntl35.c file (by Xiao Yang yangx.jy@cn.fujitsu.com) the bug tested by this test case was fixed by: pipe: cap initial pipe capacity according to pipe-max-size commit 086e774a57fba4695f14383c0818994c0b31da7c Author: Michael Kerrisk (man-pages) mtk.manpages@gmail.com Date: Tue Oct 11 13:53:43 2016 -0700

I backported that patch (see next e-mail), tested again and confirmed that the patch fixed the bug (or at least the error message in LTP's test).

Before: fcntl35.c:98: FAIL: an unprivileged user init the capacity of a pipe to 65536 unexpectedly, expected 4096 After: fcntl35.c:101: PASS: an unprivileged user init the capacity of a pipe to 4096 successfully

Looks great, thanks, I've queued this up now.

greg k-h