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From: "Theodore Y. Ts'o" <tytso@mit.edu>
To: Jan Stancek <jstancek@redhat.com>
Cc: Naresh Kamboju <naresh.kamboju@linaro.org>,
	adilger@dilger.ca, LTP List <ltp@lists.linux.it>,
	Daniel Lezcano <daniel.lezcano@linaro.org>,
	Arnd Bergmann <arnd@arndb.de>,
	open list <linux-kernel@vger.kernel.org>,
	lkft-triage@lists.linaro.org, chrubis <chrubis@suse.cz>,
	linux-ext4@vger.kernel.org
Subject: Re: LTP: statx06: FAIL: Birth time < before time
Date: Fri, 17 Jan 2020 16:33:52 -0500	[thread overview]
Message-ID: <20200117213352.GA481935@mit.edu> (raw)
In-Reply-To: <1555311261.2497849.1579281887353.JavaMail.zimbra@redhat.com>

On Fri, Jan 17, 2020 at 12:24:47PM -0500, Jan Stancek wrote:
> > LTP syscalls statx06 test case getting failed from linux next 20200115
> > tag onwards on all x86_64, i386, arm and arm64 devices
> > 
> > Test output:
> > statx06.c:152: FAIL: Birth time < before time
> 
> [CC Theo & linux-ext4]
> 
> It's returning '0' in stx_btime for STATX_ALL or STATX_BTIME.
> 
> Looking at changes, I suspect:
>   commit 927353987d503b24e1813245563cde0c6167af6e
>   Author: Theodore Ts'o <tytso@mit.edu>
>   Date:   Thu Nov 28 22:26:51 2019 -0500
>     ext4: avoid fetching btime in ext4_getattr() unless requested
> 
> and that perhaps it should be instead...
> 
> diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
> index c8355f022e6e..6d76eb6d2e7f 100644
> --- a/fs/ext4/inode.c
> +++ b/fs/ext4/inode.c
> @@ -5398,7 +5398,7 @@ int ext4_getattr(const struct path *path, struct kstat *stat,
>         struct ext4_inode_info *ei = EXT4_I(inode);
>         unsigned int flags;
> 
> -       if ((query_flags & STATX_BTIME) &&
> +       if ((request_mask & STATX_BTIME) &&
>             EXT4_FITS_IN_INODE(raw_inode, ei, i_crtime)) {
>                 stat->result_mask |= STATX_BTIME;
>                 stat->btime.tv_sec = ei->i_crtime.tv_sec;

Yep, nice catch!  Unfortunately we don't have a test like this in
xfstests, or I would have caught this sooner.

I've fixed this in the dev branch, so it will hopefully be fixed in
the future linux-next tgs.

							- Ted

      reply	other threads:[~2020-01-17 21:34 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-16 17:32 LTP: statx06: FAIL: Birth time < before time Naresh Kamboju
2020-01-17 17:24 ` Jan Stancek
2020-01-17 21:33   ` Theodore Y. Ts'o [this message]

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