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Message-ID: <d62431af-5ce4-3d8f-542f-df8e7a7faaf1@leemhuis.info>
Date:   Fri, 8 Apr 2022 12:27:32 +0200
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Cc:     "regressions@lists.linux.dev" <regressions@lists.linux.dev>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        "quackdoctech@gmail.com" <quackdoctech@gmail.com>
From:   Thorsten Leemhuis <regressions@leemhuis.info>
To:     Todd Kjos <tkjos@google.com>
Subject: Regression in BinderFS: Kernel bug at binder.c:2352
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Hi, this is your Linux kernel regression tracker.

Todd, seems there is a regression that is caused by one of your Linux
kernel changes:

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@gmail.com 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@gmail.com 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@google.com/
> 

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@gmail.com <quackdoctech@gmail.com>
#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
reports on my table. I can only look briefly into most of them and lack
knowledge about most of the areas they concern. I thus unfortunately
will sometimes get things wrong or miss something important. I hope
that's not the case here; if you think it is, don't hesitate to tell me
in a public reply, it's in everyone's interest to set the public record
straight.

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