Re: [PATCH v2 1/7] mm: fix off-by-one error in VMA count limit checks

[Andrew Morton]

On Tue, 16 Sep 2025 08:20:14 -0600 Jonathan Corbet <corbet@xxxxxxx> wrote:

> Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> writes:
> 
> > On Mon, 15 Sep 2025 09:36:32 -0700 Kalesh Singh <kaleshsingh@xxxxxxxxxx> wrote:
> >
> >> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
> >
> > lol.
> >
> > x1:/usr/src/25> grep "Fixes.*1da177e4c3f4" ../gitlog|wc -l
> > 661
> >
> > we really blew it that time!
> 
> A few years back I made a list of the most-fixed commits in the kernel
> history; unsurprisingly that one (I call it the "original sin") came out
> on top:
> 
>   https://lwn.net/Articles/914632/
> 
> Perhaps the time has come to update that analysis.
> 

Hah, thanks, that's a fun article.

It's a shame it's so recent.  I do recall back in maybe 2002 a fresh
young developer popped up with a massive rework of the IDE drivers.  I
promptly took this into my tree because I was having a hate on the IDE
drivers at the time.  omfg, what a disaster - this was the buggiest
bunch of junk conceivable and it went away after a few weeks.

I'm glad to say that the developer (email handle at the time was
"haveblue") has become better since then.