[un]pin_user_pages_remote is dirtying pages without properly warning
the file system in advance. A related race was noted by Jan Kara in
2018[1]; however, more recently instead of it being a very hard-to-hit
race, it could be reliably triggered by process_vm_writev(2) which was
discovered by Syzbo
On Wed, Mar 02, 2022 at 02:03:28PM +0100, Andreas Gruenbacher wrote:
> On Wed, Mar 2, 2022 at 11:17 AM Filipe Manana wrote:
> > On Tue, Mar 01, 2022 at 09:38:30AM +1100, Dave Chinner wrote:
> > > On Mon, Feb 28, 2022 at 02:32:03PM +, fdman...@kernel.org wrote:
> > > > From: Filipe Manana
> >
On Wed, Mar 2, 2022 at 11:17 AM Filipe Manana wrote:
> On Tue, Mar 01, 2022 at 09:38:30AM +1100, Dave Chinner wrote:
> > On Mon, Feb 28, 2022 at 02:32:03PM +, fdman...@kernel.org wrote:
> > > From: Filipe Manana
> > >
> > > Some users recently reported that MariaDB was getting a read corrupti
On Tue, Mar 01, 2022 at 08:42:03AM -0800, Darrick J. Wong wrote:
> On Mon, Feb 28, 2022 at 02:32:03PM +, fdman...@kernel.org wrote:
> > From: Filipe Manana
> >
> > Some users recently reported that MariaDB was getting a read corruption
> > when using io_uring on top of btrfs. This started to
On Tue, Mar 01, 2022 at 09:38:30AM +1100, Dave Chinner wrote:
> On Mon, Feb 28, 2022 at 02:32:03PM +, fdman...@kernel.org wrote:
> > From: Filipe Manana
> >
> > Some users recently reported that MariaDB was getting a read corruption
> > when using io_uring on top of btrfs. This started to hap
From: Filipe Manana
Some users recently reported that MariaDB was getting a read corruption
when using io_uring on top of btrfs. This started to happen in 5.16,
after commit 51bd9563b6783d ("btrfs: fix deadlock due to page faults
during direct IO reads and writes"). That changed btrfs to use the
