On 8/16/21 1:36 PM, Dan Carpenter wrote:
There should be a Fixes-from: tag for bugs found in review (not style issues) but when I suggest it then people just say to use the Reported-by tag.I think things caught during review aren't normally worthy of specific mention in the commit message (though maybe in the non-committed part under "---"). I mean, that's what review is for. And in the case of what<lkp@xxxxxxxxx> does, that's effectively a technical aspect of "review."I'm not talking about stuff like intending or naming schemes, I'm talking about real bugs like missing error codes or NULL dereferences. People do count tags so we might as well add them for worthwhile behavior.
So you're saying that things caught during review *should* be given credit, as opposed to acknowledging the credit for catching it only when the bug slips by the reviewers, caught after commit. I understand that, and I get your point about the incentives (which take the form of tags with acknowledgement). As I indicated earlier, I'm all for showering credit on everyone that helps. But I still think doing so for input taken during the review phase is too much, and full of fuzzy cases (how do you judge whether a suggestion is worth acknowledging?). I think what you do with Smatch is outstanding, and you deserve a lot of credit for it. But like checkpatch.pl, it would be even better if people used it to catch things *before* they ever went out for review. That option would give *no* credit to Smatch for catching problems early. Yet catching issues as early as possible is a good thing. Should we acknowledge checkpatch.pl when it tells us to fix something it finds; if so, which of them?
So I don't think "Fixes-from" (whatever that means) or "Reported-by" make sense for this type of update.Earlier today I forwarded a kbuild Smatch warning where someone had used "sizeof(0)" instead of "0" but because the patch was already applied, that means I got Reported-by credit. If the kbuild-bot could have reported the bug before the networking people applied it that's more valuable but I get less credit. It's a perverse incentive.
It's a perverse incentive for you as Smatch developer. But I think the better place to put an incentive is on getting people to avoid sending patches at all until they have used tools available to automatically find issues before they get out for review.
Also I sort of don't like the Reviewed-by tag. I see a lot of people adding Reviewed-by but I've never seen them point out a bug during the review process so that seems pretty worthless. But Fixes-from means that person knows what they're talking about.
That's not a problem with Reviewed-by, it's a problem with people misusing it. Are you suggesting that "Fixes-from" would be applied by the developer, not reviewer? Regardless, Reviewed-by is *supposed* to carry meaning. "Documentation/process/submitting-patches.rst" has a section that describes what the "Reviewer's statement of oversight" represents. I think it would be nice to recognize review feedback. It's actually more valuable than the summary statement "I have reviewed this and find it acceptable." But I don't believe adding new acknowledgement tags is a good way to do it. -Alex
regards, dan carpenter
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