Re: 289b7bfd48 BUG: KASAN: slab-out-of-bounds in of_device_uevent at addr ffff880012049289

[Fengguang Wu]

On Tue, Feb 28, 2017 at 12:24:03PM +0800, Fengguang Wu wrote:
> Hi Linus Walleij,
>
> I'm not sure if this is a good bisect since the merged gpio branch
> suffers from another early hang problem which could hide the KASAN
> BUG. So also OF people are also included in the loop.
>
> The attached reproduce-* script may easily reproduce the bug.
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
>
> commit 289b7bfd483c8ca3dfde92d7e19a8b70e0b81248
> Merge: 183c948 9b8e3ec
> Author:     Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
> AuthorDate: Sat Apr 9 13:28:50 2016 -0700
> Commit:     Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
> CommitDate: Sat Apr 9 13:28:50 2016 -0700
>
>     Merge tag 'gpio-v4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

The below bisect log shows this old bug is still alive in mainline.
Not sure for linux-next because it now suffers from an early boot hang bug.

> # extra tests on tree/branch linus/master
> git bisect  bad e5d56efc97f8240d0b5d66c03949382b6d7e5570  # 10:50      0-      3  Merge tag 'watchdog-for-linus-v4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
> # extra tests on tree/branch linux-next/master
> git bisect good 3e7350242c6f3d41d28e03418bd781cc1b7bad5f  # 01:04     60+     72  Add linux-next specific files for 20170224

Thanks,
Fengguang