Re: [PATCH 6.12.y] mm/mmap: fix __mmap_region() error handling in rare merge failure case

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On Mon, Nov 18, 2024 at 03:32:14PM -0500, Liam R. Howlett wrote:
> Okay, before I get yelled at...
> 
> This commit is only necessary for 6.12.y until Lorenzo's other fixes to
> older stables land (and I'll have to figure out what to do in each).
> 
> The commit will not work on mm-unstable, because it doesn't exist due to
> refactoring.
> 
> The commit does not have a tag about "upstream commit" because there
> isn't one - the closest thing I could point to does not have a stable
> git id.
> 
> So here I am with a fix for a kernel that was released a few hours ago
> that is not necessary in v6.13, for a bug that's out there on syzkaller.
> 
> Also, it's very unlikely to happen unless you inject failures like
> syzkaller.  But hey, pretty decent turn-around on finding a fix - so
> that's a rosy outlook.

Why isn't this needed in 6.13.y?  What's going to be different in there
that this isn't needed?

Do you just want me to take this for the 6.12.y tree now?  I'll be glad
to, just confused a bit.

thanks,

greg k-h




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