Bug#995425: linux-image-amd64: kernel BUG at fs/ext4/ext4_extents.h:199! (fast_commit feature)

[ng <ledufff@hotmail.com>]

It fixes the issue!   Works correctly with that patch.


El 2/10/21 a las 3:52 a. m., Salvatore Bonaccorso escribió:
> Control: tags -1 + moreinfo
>
> On Thu, Sep 30, 2021 at 08:26:38PM -0500, Nelson G wrote:
> > Package: linux-image-amd64
> > Version: 5.10.46-5
> > Severity: normal
> >
> > Hello,
> >
> > There's a bug for the ext4 filesystem, when the fast_commit flag is enabled and
> > you use fallocate or any other task that allocates space.
> >
> >
> > You can easily reproduce this bug on a VM or raw hardware by doing the
> > following:
> >
> > 1° You'll need a drive formatted with ext4 of course.
> > 2° Enable fast_commit in that drive:  tune2fs -O fast_commit /dev/yourdrive
> > 3° mount 'yourdrive', and inside 'yourdrive' try the following: fallocate -l
> > 2000MB file
> Can you check if the following fixes your issue?
>
> https://lore.kernel.org/linux-ext4/20210820044505.474318-1-houtao1@huawei.com/
>
> https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?h=dev&id=a2c2f0826e2b75560b31daf1cd9a755ab93cf4c6
>
> Regards,
> Salvatore