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Mickaël Salaün wrote: > Thanks Harshit. BTW, the following commit should also be backported > (and it was specifically created to ease backports): 6803b6ebb816 > ("landlock: Fix cosmetic change"). > I did see this as an approach, but I felt like for CVE backports keep the cherry-picks minimal if they don't really help resolving conflicts. I had no conflicts while cherry-picking and its a cosmetic change so according to stable rules I didn't take it as cherry-picking the final fix is clean. > The current patch should be backported down to 5.15, but it needs to be > adapted. Harshit, I can work on it, please let me know. > I agree and will give it a try, and if I can't do it I will let you know. (just was focusing on new branches first) > I'm wondering why I didn't get notified that some Fixes patch couldn't > automatically be backported. Greg, is there some way to register for > this kind of issue? What are the rules to not automatically backport > patches? > Greg can answer this better probably but just sharing my learnings, Fixes tag is never an assurance for getting a patch backported to stable or getting a failed patch notification when it fails to apply, CC:stable is the only way to request backporting a patch to stable. Commits with Fixes tag only(without stable tag) are not guaranteed to be backported and particularly if they have conflicts. So, for making sure these get to stable I suggest to use CC:stable that way you will also be notified if the patch fails to apply. > I also noticed that other Fixes commits were not backported to stable > branches whereas they can be cleanly cherry-picked. I'm also wondering > why they weren't pick. > They might be clean cherry-picks now but not when they appeared upstream, that is one case, and Fixes tag doesn't always ensure a patch is backported to stable. > FYI, here are the ones that can be backported without needing changes: > - 602acfb54119 ("landlock: Optimize stack usage when !CONFIG_AUDIT") > - 60207df2ebf3 ("landlock: Remove useless include") > - 7aa593d8fb64 ("selftests/landlock: Fix missing semicolon") > The first one doesn't apply on 6.12.y(6.12.77) , maybe that's the reason. > They should all be backported, even if they look like cosmetic fixes> (because they might be needed for other fixes/backports). > > Here is the other one that needs to be adapted: > - e4d82cbce225 ("landlock: Fix TCP handling of short AF_UNSPEC addresses") > I think the way to get these to stable is include CC:stable along with Fixes tag. As documented in Option 1 of [1] Now that we have missing fixes, I think the best way is to send backports to stable@vger.kernel.org I wonder if it would be helpful to make this explicitly stated: "Fixes tag alone is not a trigger for stable backports, CC:stable is needed if you want you patch to be backported to stable kernels(and also get notified if it fails to apply)" ? [1] https://www.kernel.org/doc/html/v6.19/process/stable-kernel-rules.html > Thanks, > Mickaël >