Re: [PATCH 4.19 000/105] 4.19.45-stable review

[Naresh Kamboju]

On Tue, 21 May 2019 at 14:30, Greg Kroah-Hartman
<gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
>
> On Mon, May 20, 2019 at 05:23:42PM -0500, Dan Rue wrote:
> > On Mon, May 20, 2019 at 02:13:06PM +0200, Greg Kroah-Hartman wrote:
> > > This is the start of the stable review cycle for the 4.19.45 release.
> > > There are 105 patches in this series, all will be posted as a response
> > > to this one.  If anyone has any issues with these being applied, please
> > > let me know.
> > >
> > > Responses should be made by Wed 22 May 2019 11:50:49 AM UTC.
> > > Anything received after that time might be too late.
> >
> > We're seeing an ext4 issue previously reported at
> > https://lore.kernel.org/lkml/20190514092054.GA6949@osiris.
> >
> > [ 1916.032087] EXT4-fs error (device sda): ext4_find_extent:909: inode #8: comm jbd2/sda-8: pblk 121667583 bad header/extent: invalid extent entries - magic f30a, entries 8, max 340(340), depth 0(0)
> > [ 1916.073840] jbd2_journal_bmap: journal block not found at offset 4455 on sda-8
> > [ 1916.081071] Aborting journal on device sda-8.
> > [ 1916.348652] EXT4-fs error (device sda): ext4_journal_check_start:61: Detected aborted journal
> > [ 1916.357222] EXT4-fs (sda): Remounting filesystem read-only
> >
> > This is seen on 4.19-rc, 5.0-rc, mainline, and next. We don't have data
> > for 5.1-rc yet, which is presumably also affected in this RC round.
> >
> > We only see this on x86_64 and i386 devices - though our hardware setups
> > vary so it could be coincidence.
> >
> > I have to run out now, but I'll come back and work on a reproducer and
> > bisection later tonight and tomorrow.
> >
> > Here is an example test run; link goes to the spot in the ltp syscalls
> > test where the disk goes into read-only mode.
> > https://lkft.validation.linaro.org/scheduler/job/735468#L8081
>
> Odd, I keep hearing rumors of ext4 issues right now, but nothing
> actually solid that I can point to.  Any help you can provide here would
> be great.
>

git bisect helped me to land on this commit,

# git bisect bad
e8fd3c9a5415f9199e3fc5279e0f1dfcc0a80ab2 is the first bad commit
commit e8fd3c9a5415f9199e3fc5279e0f1dfcc0a80ab2
Author: Theodore Ts'o <tytso@xxxxxxx>
Date:   Tue Apr 9 23:37:08 2019 -0400

    ext4: protect journal inode's blocks using block_validity

    commit 345c0dbf3a30872d9b204db96b5857cd00808cae upstream.

    Add the blocks which belong to the journal inode to block_validity's
    system zone so attempts to deallocate or overwrite the journal due a
    corrupted file system where the journal blocks are also claimed by
    another inode.

    Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=202879
    Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
    Cc: stable@xxxxxxxxxx
    Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

:040000 040000 b8b6ce2577d60c65021e5cc1c3a38b32e0cbb2ff
747c67b159b33e4e1da414b1d33567a5da9ae125 M fs

- Naresh

> thanks,
>
> greg k-h