linux-kernel - RE: Buggy __free(kfree) usage pattern already in tree

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Message-ID: <a0ba32c892654a2bb60327e103d181fb@AcuMS.aculab.com>
Date:   Wed, 20 Sep 2023 11:02:51 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Peter Zijlstra' <peterz@...radead.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
CC:     Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
        Alexey Dobriyan <adobriyan@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>
Subject: RE: Buggy __free(kfree) usage pattern already in tree

If this stuff is so hard to get right for non-trivial cases
perhaps it should all be ripped out?

The trivial cases are pretty easy to eve-ball check and
static analysis tools do a reasonable job.

Maybe I'm 'old-school' but I'd much rather see explicit
unlock() and free() than have 'some compiler magic' do
it for you.

	David

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