Re: [PATCH 6.7 001/162] btrfs: fix deadlock with fiemap and extent locking

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On Mon, Mar 11, 2024 at 08:23:23PM +0100, Linux regression tracking (Thorsten Leemhuis) wrote:
> On 11.03.24 19:41, David Sterba wrote:
> > On Mon, Mar 11, 2024 at 10:15:31AM +0100, Linux regression tracking (Thorsten Leemhuis) wrote:
> >> On 06.03.24 13:39, Filipe Manana wrote:
> >>> On Mon, Mar 4, 2024 at 9:26 PM Greg Kroah-Hartman
> >>> <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> >>>>
> >>>> 6.7-stable review patch.  If anyone has any objections, please let me know.
> >>>
> >>> It would be better to delay the backport of this patch (and the
> >>> followup fix) to any stable release, because it introduced another
> >>> regression for which there is a reviewed fix but it's not yet in
> >>> Linus' tree:
> >>>
> >>> https://lore.kernel.org/linux-btrfs/cover.1709202499.git.fdmanana@xxxxxxxx/
> >>
> >> Those two missed 6.8 afaics. Will those be heading to mainline any time
> >> soon?
> > 
> > Yes, in the 6.9 pull request.
> 
> Great!
> 
> >> And how fast afterwards will it be wise to backport them to 6.8?
> >> Will anyone ask Greg for that when the time has come?
> > The commits have stable tags and will be processed in the usual way.
> 
> I'm missing something. The first change from Filipe's series linked
> above has a fixes tag, but no stable tag afaics:
> https://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git/commit/?h=for-6.9&id=978b63f7464abcfd364a6c95f734282c50f3decf
> 
> So there is no guarantee that Greg will pick it up; and I assume if he
> does he only will do so after -rc1 (or later, if the CVE stuff continues
> to keep him busy). As Filipe wrote "can actually have serious
> consequences" this got me slightly worried. That's why I'm a PITA here,
> sorry -- but as I said, maybe I'm missing something.

Well it's the timing, last week before a final release the branches
don't receive any insignificant changes like reviewed-by or stable tags.
The patch connection is also done by the Fixes tag and a missing
CC:stable can be substituted by explicit requests for backport if
needed.




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