Re: Regression in BinderFS: Kernel bug at binder.c:2352

[Todd Kjos]

On Fri, Apr 8, 2022 at 3:27 AM Thorsten Leemhuis
<regressions@xxxxxxxxxxxxx> wrote:
>
> Hi, this is your Linux kernel regression tracker.
>
> Todd, seems there is a regression that is caused by one of your Linux
> kernel changes:

Yes, it was reported a few days ago by the ChromeOS team. Already
looking into it.

>
> I noticed a regression report in bugzilla.kernel.org that afaics nobody
> acted upon since it was reported about a week ago, that's why I decided
> to forward it to the lists and all people that seemed to be relevant
> here. To quote from https://bugzilla.kernel.org/show_bug.cgi?id=215795 :
>
> >  quackdoctech@xxxxxxxxx 2022-04-02 19:56:29 UTC
> >
> > Created attachment 300686 [details]
> > Dmesg output cut to error
> >
> > Apologies if this should have been reported under Drivers where the source is, selftests has it listed under filesystems so I chose here. Using Waydroid which is android run via LXC, on android 10 the bug comes when trying to use video playback. I know of issues on android 11 but have not yet had the chance to get the logs from it. the issue does not occur in Linux kernel 5.16 series. but does occur on linux 5.17. the issue is confirmed on both Arch's linux-zen 5.17.1.zen1-1 kernel as well as some users reporting a fedora kernel with the issue.
> >
> > [reply] [−] Comment 1 quackdoctech@xxxxxxxxx 2022-04-03 19:38:37 UTC
> >
> > I've narrowed down the issue to this patch series.
> >
> > https://lore.kernel.org/all/20211130185152.437403-1-tkjos@xxxxxxxxxx/
> >
>
> Could somebody take a look into this? Or was this discussed somewhere
> else already? Or even fixed?
>
> Anyway, to get this tracked:
>
> #regzbot introduced: v5.16..v5.17
> #regzbot from: quackdoctech@xxxxxxxxx <quackdoctech@xxxxxxxxx>
> #regzbot title: BinderFS: Kernel bug at binder.c:2352
> #regzbot link: https://bugzilla.kernel.org/show_bug.cgi?id=215795
>
> Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
>
> P.S.: As the Linux kernel's regression tracker I'm getting a lot of
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