Re: [syzbot] KASAN: use-after-free Read in __media_entity_remove_links

From: Laurent Pinchart
Date: Tue Nov 21 2023 - 16:45:42 EST


On Tue, Nov 21, 2023 at 01:13:15PM -0800, syzbot wrote:
> This bug is marked as fixed by commit:
> media: uvcvideo: Avoid cyclic entity chains due to malformed USB descriptors
>
> But I can't find it in the tested trees[1] for more than 90 days.
> Is it a correct commit? Please update it by replying:
>
> #syz fix: exact-commit-title

What logic does syzbot use to try and find the commit upstream ? There's
a commit with the exact same subject, what was missing to find it
automatically ?

> Until then the bug is still considered open and new crashes with
> the same signature are ignored.
>
> Kernel: Linux
> Dashboard link: https://syzkaller.appspot.com/bug?extid=0b0095300dfeb8a83dc8
>
> ---
> [1] I expect the commit to be present in:
>
> 1. for-kernelci branch of
> git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git
>
> 2. master branch of
> git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git
>
> 3. master branch of
> git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git
>
> 4. main branch of
> git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git
>
> The full list of 9 trees can be found at
> https://syzkaller.appspot.com/upstream/repos

--
Regards,

Laurent Pinchart